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Forum Index : Microcontroller and PC projects : MM2 SDcard routines updated

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matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 8517
Posted: 07:59pm 13 Mar 2020
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Please find attached updated drivers for SD cards on the Micromite (28 and 44-pin). This fixes an error in the return of the number of bytes written when using the write command. As before there are two variants of the CFunction, one works with the normal SPI pins as per the manual but should be fully compatible with TFT panels and touch. The second uses the second SPI channel on the Micromite to connect to the SD card. Pins for the second channel are:

28-pin: SPI2OUT-24, SPI2IN-6, SPI2CLK-26
44-pin: SPI2OUT-11, SPI2IN-23, SPI2CLK-15

The code has been tested on both 28 and 44-pin Micromites with both FAT and FAT32 formatted SD cards using MM2 firmware version 5.05.02.

The CFunction should be loaded to the MM2 and then saved to the library and the the processor restarted. The function MM.STARTUP should be edited to set the MM2 PIN used for the chip select in your application. All access to the SDcard uses the same command "SDCARD" this is then followed by a parameter that sets the function required. Valid values are:

0 - initialise the SDcard routine
1 - open a file
2 - read from a file
3 - write to a file
4 - open a directory
5 - read from a directory
6 - load a program from the SDcard
7 - save a program to the SDcard

To make the code easier to read these can be defined as constants in your code e.g.

const fileopen=1
const readfile=2
const writefile=3
const opendir=4
const readdir=5


It is important to understand that these routines which are based on Chan's PetitFS cannot create files. They can however overwrite existing files. Therefore for saving programs or data logging a blank file of suitable size should be created on the SDcard before use in the MM2. The CFunction uses approximately 10Kb of program memory.

If the routines fail to work then suspect the power supply to the SDcard. A conservative approach is to use a 2.2ohm resistor in the power supply and a 10uF and 0.1uF capacitor across the power pins of the SDcard. Many SDcard modules include pullup resistors. As long as these are 10K or higher they should not cause a problem.


Functionality:

SDcard 0,CSpin,speed 'must be called in MM.STARTUP

CSpin is the MM pin number connected to the SDcard CS input
"speed" controls how fast the SPI bus operates. If omitted the bus runs at 5MHz which should suit most SDHC cards. Assuming the CPU is running at 40MHz, a parameter of 0 runs the bus at 20MHz which works for me on Class-10 cards.
Values in the range 0-fastest to 10-slowest should cater for any speed of card. The default if omitted is 2 (5MHz).

SDCard 1,filename$ 'open a file for read and/or write

This opens the file defined by the string literal or variable "filename$". It will automatically initialise and mount the disk before opening the file.

SDcard 2,buff$ or buff(),start_byte,#_of_bytes_requested,#_of_bytes_read' read from a file

This reads a specified number of bytes into a Basic variable

"buff" defines where the bytes read will be put. For 255 bytes or less this should be a string variable e.g. buff$. Elements of a string array are not supported. For greater than 255 bytes it should be an integer array dimensioned such that the number of bytes requested divided by 8 should be less than or equal to the array size e.g. DIM INTEGER buff(127) can receive 1024 bytes

"start_byte" defines the number of bytes from the start of the file to start the read. Use zero to position at the beginning of the file. Use any negative number to read from the current file location

"#_of_bytes_requested" defines the number of bytes you wish to read.

"#_of_bytes_read" returns the number of bytes actually read. This should be the same as the number requested unless the end-of-file has been reached so it provides an easy test for end-of-file

SDcard 3,buff$ or buff(),start_byte,#_of_bytes_to_be_written,#_of_bytes_written ' write to a file

This writes a specified number of bytes from a Basic variable

"buff" defines where the bytes to be written are stored. For 255 bytes or less this should be a string variable e.g. buff$. Elements of a string array are not supported. For greater than 255 bytes it should be an integer array dimensioned such that the number of bytes to be written divided by 8 should be less than or equal to the array size e.g. DIM INTEGER buff(127) can store 1024 bytes for output to the SDcard.

"start_byte" defines the number of bytes from the start of the file to start the write. Use zero to position at the beginning of the file. Use any negative number to write from the current file location

"#_of_bytes_to_be_written" defines the number of bytes you wish to write.

"#_of_bytes_written" returns the number of bytes actually written. This should be the same as the number requested unless the end-of-file has been reached so it provides an easy test for attempting to write past the end-of-file

SDCard 4,directoryname$ ' open a directory for read

This opens the directory defined by the string literal or variable "directoryname$". It will automatically initialise and mount the disk before opening the directory.

SDCard 5,filename$ ' read a directory entry

This reads the next filename from the open directory and returns it in the string variable "filename$". A blank filename indicates that the last valid file or directory name has been read. Sub-directories are indicated by the prefix "<DIR>"

For convenience SDcard 6 and SDcard 7 are predefined in functions in the code supplied
LOAD "program.bas"
SAVE "newprog.bas"
There is only one limitation in that the file to be "saved" must exist before using the SAVE command which will then overwrite it.

C - source code

PetitFS.zip

Code for SPI1
sub mm.startup
' include initialisation for display driver here if required
 sdcard 0,2 'set up the chip select pin for the SDcard
end sub
sub load(f$)
 sdcard 6,f$
end
end sub
sub save(f$)
 sdcard 7,f$
end sub
Csub SDcard 'SPI1 version 2.05
   00000676
   'rcv_spi
   240300FF 3C02BF80 AC435820 3C03BF80 8C625810 30420080 1040FFFD 3C02BF80
   8C425820 03E00008 304200FF
   'xmit_spi
   308400FF 3C02BF80 AC445820 3C03BF80 8C625810 30420080 1040FFFD 3C02BF80
   8C425820 03E00008 304200FF
   'mem_set
   10C00006 00801021 00862021 A0450000 24420001 5444FFFE A0450000 03E00008
   00000000
   'mem_cmp
   2407FFFF 24C6FFFF 10C70008 00001021 80830000 80A20000 00621023 14400003
   24840001 1000FFF7 24A50001 03E00008 00000000
   'mystrlen
   80830000 10600006 00001021 24420001 00821821 80630000 5460FFFD 24420001
   03E00008 00000000
   'send_cmd
   27BDFFE0 AFBF001C AFB20018 AFB10014 AFB00010 309100FF 7C111420 04410009
   00A09021 24040077 00002821 0411FFF4 00000000 2C430002 10600034 8FBF001C
   3231007F 3C109D00 8E030090 8E02001C 80640030 0040F809 24050006 0411FFB2
   00000000 8E030090 8E02001C 80640030 0040F809 24050005 0411FFAB 00000000
   02202021 0411FFB3 00000000 00122602 0411FFB0 00000000 7E443C00 0411FFAD
   00000000 7E443A00 0411FFAA 00000000 324400FF 0411FFA7 00000000 24020040
   12220006 24040095 3A310048 24020001 24030087 00402021 0071200A 0411FF9D
   00000000 2410000A 0411FF8F 00000000 7C021C20 04610004 2610FFFF 321000FF
   1600FFF9 00000000 8FBF001C 8FB20018 8FB10014 8FB00010 03E00008 27BD0020
   'disk_readp
   27BDFFD8 AFBF0024 AFB40020 AFB3001C AFB20018 AFB10014 AFB00010 00809021
   00C09821 00E0A021 3C029D00 8C42008C 8C4300FC 30630008 00051240 24040051
   0043280A 0411FFA6 00000000 14400024 24100001 34109C40 241100FF 0411FF6A
   00000000 14510005 2610FFFF 1600FFFB 00000000 1000001A 24100001 240300FE
   14430017 24100001 00138823 26310202 12600006 02348823 0411FF5B 00000000
   2673FFFF 1660FFFC 00000000 02548021 0411FF55 00000000 A2420000 26520001
   1650FFFB 00000000 0411FF4F 00000000 2631FFFF 1620FFFC 00000000 00008021
   3C029D00 8C430090 8C42001C 80640030 0040F809 24050006 0411FF43 00000000
   02001021 8FBF0024 8FB40020 8FB3001C 8FB20018 8FB10014 8FB00010 03E00008
   27BD0028
   'clust2sect
   24A5FFFE 8C830008 2463FFFE 00A3182B 10600005 00001021 90830002 8C820014
   70A32002 00821021 03E00008 00000000
   'dir_rewind
   27BDFFE8 AFBF0014 AFB00010 00A08021 A4A00000 8CA50008 24030001 10A30015
   24020001 8C830008 00A3182B 50600012 8FBF0014 54A00008 AE05000C 90830000
   24020003 54620008 AE00000C 8C850010 10A00005 AE05000C 0411FFDD 00000000
   10000003 AE020010 8C820010 AE020010 00001021 8FBF0014 8FB00010 03E00008
   27BD0018
   'create_name
   27BDFFE0 AFBF001C AFB10018 AFB00014 00A08021 8C910004 02202021 24050020
   2406000B 0411FF18 00000000 8E080000 00002021 00001821 24070008 2409002F
   2406002E 240A0008 01031021 90420000 24630001 2C450021 14A00018 306300FF
   50490017 01031821 10460003 0087282B 14A00008 2445FF9F 54EA0011 01031821
   5446000F 01031821 01402021 1000FFEE 2407000B 30A500FF 2CA5001A 10A00003
   02242821 2442FFE0 304200FF A0A20000 24840001 1000FFE4 308400FF 01031821
   AE030000 2C420021 A222000B 00001021 8FBF001C 8FB10018 8FB00014 03E00008
   27BD0020
   'get_clust
   90840000 24020003 14820006 00001821 90A30015 00031A00 90A20014 00621825
   00031C00 90A2001B 00021200 90A4001A 00441025 03E00008 00621025
   'get_fat
   27BDFFE0 AFBF001C 2CA20002 1440001B 24030001 8C820008 00A2102B 10400018
   00601021 000519C2 8C82000C 30A6007F 27A40010 00622821 00063080 24070004
   0411FF31 00000000 1440000C 24030001 93A30013 00031E00 93A20012 00021400
   00621825 93A20010 00621825 93A20011 00021200 00621825 7C63D800 00601021
   8FBF001C 03E00008 27BD0020
   'dir_next
   27BDFFE0 AFBF001C AFB20018 AFB10014 AFB00010 00808821 00A08021 94B20000
   26520001 3252FFFF 12400028 24020003 8CA30010 50600026 8FBF001C 3242000F
   54400021 A6120000 24630001 ACA30010 8CA5000C 14A00007 00121902 94830004
   0243182B 14600017 24020003 10000018 8FBF001C 90820002 2442FFFF 00621024
   54400011 A6120000 0411FFBA 00000000 00402821 2C430002 1460000C 24020001
   8E230008 00A3182B 10600008 24020003 AE05000C 02202021 0411FF39 00000000
   AE020010 A6120000 00001021 8FBF001C 8FB20018 8FB10014 8FB00010 03E00008
   27BD0020
   'dir_find
   27BDFFD8 AFBF0024 AFB30020 AFB2001C AFB10018 AFB00014 00809821 00A08821
   00C09021 0411FF31 00000000 14400021 00408021 96260000 30C6000F 02402021
   8E250010 00063140 24070020 0411FED2 00000000 0002802B 16000017 02001021
   92420000 50400013 24100003 9242000B 30420008 14400008 02602021 02402021
   8E250004 2406000B 0411FE64 00000000 10400008 02602021 02202821 0411FF9F
   00000000 1040FFE3 00408021 10000002 02001021 02001021 8FBF0024 8FB30020
   8FB2001C 8FB10018 8FB00014 03E00008 27BD0028
   'follow_path
   27BDFFE0 AFBF001C AFB20018 AFB10014 AFB00010 00809021 00A08021 AFA7002C
   80E20000 24030020 14430006 00C08821 24E70001 AFA7002C 80E20000 5043FFFD
   24E70001 2403002F 54430004 AE000008 24E70001 AFA7002C AE000008 8FA2002C
   90420000 2C420020 10400008 02002021 02402021 02002821 0411FEE7 00000000
   1000001B A2200000 02002021 27A5002C 0411FF02 00000000 14400015 02402021
   02002821 02203021 0411FFA0 00000000 14400010 8FBF001C 8E030004 9063000B
   5460000D 8FB20018 9222000B 30420010 10400006 02402021 02202821 0411FF28
   00000000 1000FFE8 AE020008 24020003 8FBF001C 8FB20018 8FB10014 8FB00010
   03E00008 27BD0020
   'pf_lseek
   27BDFFD8 AFBF0024 AFB30020 AFB2001C AFB10018 AFB00014 00808021 1080004F
   24020005 90830001 30630001 1060004B 24020004 8C82001C 0045902B 00B2100A
   00409021 8C830018 AC800018 12400043 00001021 90910002 10600012 00118A40
   2463FFFF 2642FFFF 0051001B 022001F4 00001012 0071001B 022001F4 00002012
   0044102B 54400008 8E050020 00111023 00431824 AE030018 02439023 10000003
   8E050024 8E050020 AE050024 0232102B 10400018 00119823 02519023 02002021
   0411FEFC 00000000 00402821 2C420002 54400006 A2000001 8E020008 00A2102B
   54400004 AE050024 A2000001 1000001B 24020001 8E020018 00511021 AE020018
   02531021 00511821 0223182B 5460FFEB 00409021 8E020018 00529021 AE120018
   02002021 0411FE6E 00000000 54400004 92040002 A2000001 10000008 24020001
   2484FFFF 8E030018 00031A42 00831824 00431021 AE020028 00001021 8FBF0024
   8FB30020 8FB2001C 8FB10018 8FB00014 03E00008 27BD0028
   'pf_read
   27BDFFD0 AFBF002C AFB60028 AFB50024 AFB40020 AFB3001C AFB20018 AFB10014
   AFB00010 00808021 00A0A821 00E09821 ACE00000 1080004A 24020005 90830001
   30630001 10600046 24020004 8C92001C 8C820018 02429023 0246102B 00C2900A
   1240003F 00001021 00A0A021 24160200 8E020018 304301FF 5460001F 8E060018
   00021A42 92110002 2631FFFF 00718824 323100FF 1620000E 02002021 54400003
   8E050024 10000003 8E020020 0411FEA3 00000000 2C430002 50600004 AE020024
   A2000001 10000026 24020001 02002021 8E050024 0411FE24 00000000 14400004
   00518821 A2000001 1000001D 24020001 AE110028 8E060018 30C601FF 02C61023
   0052882B 0251100A 00408821 00002021 0295200B 8E050028 00403821 0411FDC9
   00000000 50400004 8E020018 A2000001 1000000B 24020001 00511021 AE020018
   02519023 8E620000 00511021 12400003 AE620000 1000FFC6 0291A021 00001021
   8FBF002C 8FB60028 8FB50024 8FB40020 8FB3001C 8FB20018 8FB10014 8FB00010
   03E00008 27BD0030
   'disk_initialize
   27BDFFD0 AFBF002C AFB30028 AFB20024 AFB10020 AFB0001C 240300C7 3C02BF80
   AC435830 3C029D00 8C430090 8C42001C 80640030 0040F809 24050006 2410000A
   0411FD20 00000000 2610FFFF 321000FF 1600FFFB 24040040 00002821 0411FD4F
   00000000 24030001 14430061 3C029D00 24040048 240501AA 0411FD48 00000000
   24030001 14430037 240400E9 27B00010 27B10014 0411FD0B 00000000 A2020000
   26100001 1611FFFB 93A30012 24020001 1462004E 00008021 93A30013 240200AA
   1462004B 3C029D00 10000008 24112710 0040F809 24040064 2631FFFF 16200005
   240400E9 1000003F 00008021 3C109D00 240400E9 3C054000 0411FD28 00000000
   5440FFF3 8E020004 12200038 00008021 2404007A 00002821 0411FD20 00000000
   14400033 3C029D00 24110004 0411FCE5 00000000 27A40010 00901821 26100001
   1611FFFA A0620000 93B00010 32100040 2402000C 24030004 0070100A 10000023
   00408021 00002821 0411FD0C 00000000 2C420002 24030002 24100001 0062800B
   240300E9 24130041 0062980B 24112710 10000006 3C129D00 0040F809 24040064
   2631FFFF 52200011 00008021 02602021 00002821 0411FCF9 00000000 5440FFF6
   8E420004 52200009 00008021 24040050 24050200 0411FCF1 00000000 10000003
   0002800B 10000002 3C029D00 3C029D00 8C43008C AC7000FC 8C430090 8C42001C
   80640030 0040F809 24050006 0411FCAD 00000000 12000005 3C029D00 8C420090
   8043003C 3C02BF80 AC435830 2E020001 8FBF002C 8FB30028 8FB20024 8FB10020
   8FB0001C 03E00008 27BD0030
   'disk_writep
   27BDFFE0 AFBF001C AFB20018 AFB10014 AFB00010 10800014 00808021 30A5FFFF
   10A00052 00009021 97828010 1040004F 00858821 92040000 26100001 0411FC99
   00000000 97828010 2442FFFF 3042FFFF 12110045 A7828010 5440FFF7 92040000
   10000042 00009021 10A00016 97908010 3C029D00 8C42008C 8C4300FC 30630008
   00051240 24040058 0043280A 0411FCB0 00000000 14400035 24120001 240400FF
   0411FC80 00000000 240400FE 0411FC7D 00000000 24020200 A7828010 1000002B
   00009021 26100002 12000008 2610FFFF 2411FFFF 00002021 0411FC72 00000000
   2610FFFF 1611FFFC 00002021 0411FC62 00000000 3042001F 24030005 14430010
   24120001 10000005 241207D0 0040F809 240403E8 10000003 2652FFFF 241100FF
   3C109D00 0411FC54 00000000 50510004 2E520001 5640FFF5 8E020004 24120001
   3C029D00 8C430090 8C42001C 80640030 0040F809 24050006 0411FC47 00000000
   10000003 02401021 00009021 02401021 8FBF001C 8FB20018 8FB10014 8FB00010
   03E00008 27BD0020
   'pf_write
   27BDFFD0 AFBF002C AFB60028 AFB50024 AFB40020 AFB3001C AFB20018 AFB10014
   AFB00010 00808021 00C09021 00E09821 ACE00000 1080007B 24020005 90830001
   30640001 10800077 24020004 14C00010 30630040 5060000A 92020001 00002021
   00002821 0411FF84 00000000 50400004 92020001 A2000001 1000006A 24020001
   304200BF A2020001 10000066 00001021 54600006 8E03001C 8E030018 2402FE00
   00621024 AE020018 8E03001C 8E020018 00621023 0052182B 14600005 00000000
   00A0A021 24150200 10000005 2416FFBF 1440FFFB 00409021 10000053 8FBF002C
   8E020018 304301FF 54600029 8E110018 00021A42 92110002 2631FFFF 00718824
   323100FF 1620000E 02002021 54400003 8E050024 10000003 8E020020 0411FD30
   00000000 2C430002 50600004 AE020024 A2000001 1000003B 24020001 02002021
   8E050024 0411FCB1 00000000 14400004 00512821 A2000001 10000032 24020001
   AE050028 00002021 0411FF43 00000000 50400004 92020001 A2000001 10000029
   24020001 34420040 A2020001 8E110018 323101FF 02B18823 0232102B 0242880A
   02802021 02202821 0411FF33 00000000 50400004 8E020018 A2000001 10000019
   24020001 00511021 AE020018 8E620000 00511021 AE620000 8E020018 304201FF
   5440000D 02519023 00002021 00002821 0411FF21 00000000 50400004 92020001
   A2000001 10000007 24020001 00561024 A2020001 02519023 1640FFB1 0291A021
   00001021 8FBF002C 8FB60028 8FB50024 8FB40020 8FB3001C 8FB20018 8FB10014
   8FB00010 03E00008 27BD0030
   'check_fs
   27BDFFE0 AFBF001C AFB10018 AFB00014 00808021 00A08821 240601FE 24070002
   0411FC1E 00000000 14400028 24030003 92040001 00042200 92020000 00822025
   7C042620 2402AA55 14820020 24030002 02002021 02202821 24060036 24070002
   0411FC0E 00000000 1440000A 02002021 92040001 00042200 92020000 00822025
   7C042620 24024146 10820010 00001821 02002021 02202821 24060052 24070002
   0411FBFE 00000000 14400008 24030001 92030001 00031A00 92020000 00621825
   7C031E20 38634146 0003182B 00601021 8FBF001C 8FB10018 8FB00014 03E00008
   27BD0020
   'pf_mount
   27BDFFB8 AFBF0044 AFB10040 AFB0003C 00808021 0411FE39 00000000 30420001
   14400087 24030002 27A40010 00002821 0411FFBA 00000000 24030001 1443001A
   00008821 27A40010 00002821 240601BE 24070010 0411FBD8 00000000 14400078
   24030001 93A20014 10400075 24030006 93B1001B 00118E00 93A2001A 00021400
   02228825 93A20018 02228825 93A20019 00021200 02228825 27A40010 02202821
   0411FF9E 00000000 24040003 10440064 24030001 14400062 24030006 27A40010
   02202821 2406000D 24070024 0411FBBA 00000000 1440005A 24030001 93A2001A
   00021200 93A30019 00431025 1440000C 93A30013 93A3002A 00031E00 93A20029
   00021400 00621025 93A30027 00431025 93A30028 00031A00 00431025 93A30013
   70431002 93A60012 00063200 93A30011 00C33025 02268821 AE11000C 93A50010
   A2050002 93A40015 00042200 93A30014 00832025 A6040004 93A30017 00031A00
   93A70016 00671825 1460000B 00042102 93A70026 00073E00 93A30025 00031C00
   00E31825 93A70023 00671825 93A70024 00073A00 00671825 00661823 00621823
   00641823 0065001B 00A001F4 00003012 24C50002 AE050008 24C6F00A 3407EFFF
   00C7302B 2CA70FF7 24030002 0066380B 3403FFF7 00A3282B 10A0001F 24030003
   10E00017 24030006 24030003 14E3000D A2070000 93A50032 00052E00 93A30031
   00031C00 00A32825 93A3002F 00A32825 93A30030 00031A00 00A31825 10000003
   AE030010 00511821 AE030010 02248821 02221021 AE020014 A2000001 00001821
   00601021 8FBF0044 8FB10040 8FB0003C 03E00008 27BD0048 1000FFE6 A2030000
   'pf_open
   27BDFFA0 AFBF005C AFB10058 AFB00054 00808821 00A03821 10800025 24100005
   A0800001 27A20024 AFA20014 27A50010 27A60030 0411FC97 00000000 1440001C
   00408021 93A20030 10400018 93A2003B 30420010 54400016 24100003 02202021
   27A50030 0411FBEB 00000000 AE220020 93A3004F 00031E00 93A2004E 00021400
   00621025 93A3004C 00431025 93A3004D 00031A00 00431025 AE22001C AE200018
   24020001 10000002 A2220001 24100003 02001021 8FBF005C 8FB10058 8FB00054
   03E00008 27BD0060
   'pf_opendir
   27BDFFB0 AFBF004C AFB10048 AFB00044 00808021 00A08821 00C03821 10800018
   24020005 27A20010 ACA20004 27A6001C 0411FC66 00000000 14400012 8FBF004C
   93A2001C 1040000B 02002021 93A30027 30630010 1060000A 24020003 02002021
   27A5001C 0411FBB9 00000000 AE220008 02002021 02202821 0411FB5A 00000000
   8FBF004C 8FB10048 8FB00044 03E00008 27BD0050
   'get_fileinfo
   8C830010 10600036 24C20009 90A30000 24040020 1064000E 00A02021 244A0008
   24090005 240800E5 10000003 240B0020 106B0007 24840001 00693826 0107180A
   A0430000 24420001 544AFFF9 90830001 90A40008 24030020 1083000A 2403002E
   A0430000 90A30008 24040020 1464001E 24420001 10000004 90A3000B A0430000
   24420001 90A3000B A0C30008 90A4001F 00042600 90A3001E 00031C00 00831825
   90A4001C 00641825 90A4001D 00042200 00641825 ACC30000 90A30019 00031A00
   90A40018 00641825 A4C30004 90A30017 00031A00 90A40016 00641825 A4C30006
   03E00008 A0400000 A0430000 90A30009 24040020 1064FFE3 24420001 A0430000
   90A3000A 1464FFDD 24420001 1000FFDE 90A3000B
   'dir_read
   27BDFFD8 AFBF0024 AFB40020 AFB3001C AFB20018 AFB10014 AFB00010 00809821
   00A08021 00C08821 24020003 241200E5 10000019 2414002E 30C6000F 02202021
   00063140 24070020 0411FAA7 00000000 0002102B 54400016 AE000010 92230000
   50600012 24020003 10720005 9224000B 10740003 30840008 1080000E 8FBF0024
   02602021 02002821 0411FB78 00000000 54400007 AE000010 8E050010 54A0FFE6
   96060000 10400003 8FBF0024 AE000010 8FBF0024 8FB40020 8FB3001C 8FB20018
   8FB10014 8FB00010 03E00008 27BD0028
   'pf_readdir
   27BDFFB0 AFBF004C AFB20048 AFB10044 AFB00040 00808821 00A08021 00C09021
   1080001B 24020005 27A20010 14C00005 ACA20004 0411FACD 00000000 10000015
   8FBF004C 27A6001C 0411FFB9 00000000 24030003 10430004 02002021 1440000D
   8FBF004C 02002021 27A5001C 02403021 0411FF6A 00000000 02202021 02002821
   0411FB46 00000000 38430003 0003100A 8FBF004C 8FB20048 8FB10044 8FB00040
   03E00008 27BD0050
   'getFPC
   27BDFFF8 AFBF0004 00852023 03E42021 ACC40000 8FBF0004 03E00008 27BD0008
   'errstring
   27BDFFE0 AFBF001C AFB00018 00808021 00002021 3C059D00 24A518D0 27A60010
   0411FFEF 00000000 8FA20010 1200003C 24030001 16030006 24030002 8FA30010
   3C049D00 248425BC 10000012 00832021 56030006 3C049D00 8FA30010 3C049D00
   248425CC 10000013 00832021 248425AC 00822021 24020003 16020007 24020004
   8FA30010 3C049D00 248425D8 10000011 00832021 24020004 16020007 24020005
   8FA30010 3C049D00 248425E4 10000011 00832021 24020005 16020007 24020006
   8FA30010 3C049D00 248425F4 10000010 00832021 24020006 16020007 24020007
   8FA30010 3C049D00 24842604 10000008 00832021 24020007 16020006 3C029D00
   8FA30010 3C049D00 24842618 00832021 3C029D00 8C4200BC 0040F809 00000000
   8FBF001C 8FB00018 03E00008 27BD0020
   'main
   27BDFFA8 AFBF0054 AFBE0050 AFB7004C AFB60048 AFB50044 AFB40040 AFB3003C
   AFB20038 AFB10034 AFB00030 00808021 00A08821 00C0A821 00E09821 3C03BF80
   8C655830 3C029D00 8C44008C AC850044 8C655800 8C44008C AC850048 8C645840
   8C43008C AC64004C 8C430090 80640030 8C430088 00041080 00431021 8C430000
   24020065 1462000B 3C029D00 3C02BF80 34038260 AC435800 24030C00 AC435840
   3C039D00 8C630090 8063003C AC435830 3C029D00 8C52008C 26540050 8E060000
   24020001 10C20006 26570078 24020006 10C20003 24020007 14C20006 24020004
   82250000 04A10007 00001021 1000000F 03A52821 14C2001A 24020007 1000FFF9
   82250000 27A40010 00821821 02222021 90840000 A0640000 24420001 00A2182A
   1060FFF9 27A40010 03A52821 24020006 14C20005 A0A00011 3C029D00 8C4200C4
   0040F809 00000000 8E060000 24020001 10C20007 24020006 10C20005 24020007
   10C20003 24020004 54C200CB 8E030000 3C029D00 8C430090 80640030 8C430088
   00041080 00431021 8C430000 24020065 10620003 24040007 0411FF4D 00000000
   3C02BF81 8C44F220 7C84D800 3C030661 3463A053 1083000B 24020050 3C02BF81
   8C43F220 7C63D800 3C020660 3442A053 00621026 24030050 2404000C 0082180B
   00601021 3C039D00 8C630088 00431021 8C430000 24020065 10620084 3C029D00
   8C420010 3C03BF81 8C65F220 7CA5D800 3C030661 3463A053 10A3000B 24040014
   3C03BF81 8C64F220 7C84D800 3C030660 3463A053 00832026 24030014 24050003
   00A4180B 00602021 24050008 0040F809 00003021 3C029D00 8C420010 3C03BF81
   8C65F220 7CA5D800 3C030661 3463A053 10A3000B 24040014 3C03BF81 8C64F220
   7C84D800 3C030660 3463A053 00832026 24030014 24050003 00A4180B 00602021
   24050064 0040F809 00003021 3C029D00 8C420010 3C03BF81 8C65F220 7CA5D800
   3C030661 3463A053 10A3000B 24040029 3C03BF81 8C64F220 7C84D800 3C030660
   3463A053 00832026 24030029 2405000E 00A4180B 00602021 24050002 0040F809
   00003021 3C029D00 8C420010 3C03BF81 8C65F220 7CA5D800 3C030661 3463A053
   10A3000B 24040029 3C03BF81 8C64F220 7C84D800 3C030660 3463A053 00832026
   24030029 2405000E 00A4180B 00602021 24050064 0040F809 00003021 3C029D00
   8C420010 3C03BF81 8C65F220 7CA5D800 3C030661 3463A053 10A3000B 2404000E
   3C03BF81 8C64F220 7C84D800 3C030660 3463A053 00832026 2403000E 24050019
   00A4180B 00602021 24050008 0040F809 00003021 3C029D00 8C420010 3C03BF81
   8C65F220 7CA5D800 3C030661 3463A053 10A3000B 2404000E 3C03BF81 8C64F220
   7C84D800 3C030660 3463A053 00832026 2403000E 24050019 00A4180B 00602021
   24050064 0040F809 00003021 3C02BF81 8C43FA84 24160001 7EC31804 AC43FA84
   3C02BF81 8C43FB04 24040003 7C831804 AC43FB04 3C02BF80 34038260 AC435800
   24030C00 AC435840 3C029D00 8C42008C AC4000F8 02802021 0411FD03 00000000
   00402021 0411FE9A 00000000 8E020000 54560009 8E030000 02802021 27A50011
   0411FD91 00000000 00402021 0411FE90 00000000 8E030000 24020002 54620022
   8E030000 8EA50000 04A00006 02802021 0411FA6C 00000000 00402021 0411FE84
   00000000 8E660000 28C20100 1040000B 02802021 26250001 27A70020 0411FABF
   00000000 00402021 0411FE79 00000000 8FA20020 10000008 A2220000 02202821
   27A70020 0411FAB5 00000000 00402021 0411FE6F 00000000 8FA20020 8FA30068
   AC620000 8E030000 24020003 5462008D 8E030000 8EA20000 04410005 3C029D00
   8C42008C 8C4200F8 AEA20000 3C029D00 8C42008C 8C4400F8 8E630000 00831821
   AC4300F8 8EB60000 241EFE00 02DEF024 02802021 03C02821 0411FA3A 00000000
   00402021 0411FE52 00000000 8E660000 28C20100 02221021 AFA2002C 8EA20000
   105E005B 32D601FF AFB60028 3C029D00 8C420040 0040F809 24040200 0040B021
   02802021 00402821 24060200 27A70020 0411FA82 00000000 00402021 0411FE3C
   00000000 02802021 03C02821 0411FA1D 00000000 00402021 0411FE35 00000000
   8E650000 8FA40028 00852821 2CA20201 14400003 0000F021 24BEFE00 24050200
   8FA30028 0065102A 10400009 8FA3002C 8FA40028 02C41021 02C52821 90640000
   A0440000 24420001 1445FFFC 24630001 02802021 02C02821 8FA60020 27A70020
   0411FBB5 00000000 00402021 0411FE18 00000000 8FA20020 8FA30028 00431023
   8FA40068 AC820000 8E630000 0062202A 0064100B 8FA30068 13C00012 AC620000
   8E650000 00BE2823 02802021 8FA2002C 00452821 03C03021 27A70020 0411FB9E
   00000000 00402021 0411FE01 00000000 8FA40068 8C830000 8FA20020 00621021
   AC820000 02802021 00002821 00003021 27A70020 0411FB90 00000000 00402021
   0411FDF3 00000000 10000016 8E030000 02802021 8FA5002C 27A70020 0411FB86
   00000000 00402021 0411FDE9 00000000 8FA20020 8FA30068 AC620000 02802021
   00002821 00003021 27A70020 0411FB7A 00000000 00402021 0411FDDD 00000000
   8E030000 24020004 5462000A 8E030000 02802021 02E02821 27A60011 0411FD04
   00000000 00402021 0411FDD1 00000000 8E030000 24020005 5462003C 8E030000
   265200A0 02802021 02E02821 02403021 0411FD95 00000000 00402021 0411FDC4
   00000000 92430008 24020016 5462000A 82420009 02802021 02E02821 02403021
   0411FD89 00000000 00402021 0411FDB8 00000000 82420009 50400023 A2200000
   92420008 30420010 54400006 2402003C 24130001 02331821 00001021 1000000C
   2405000C A2220001 24020044 A2220002 24020069 A2220003 24020072 A2220004
   2402003E A2220005 1000FFF2 24130006 02422021 90840009 A0640000 24420001
   1445FFFB 24630001 2402000C AFA20020 26440009 0411F798 00000000 2673FFFF
   02629821 A2330000 8E030000 24020006 5462003E 8E030000 3C029D00 8C420040
   0040F809 3404C800 0040B821 02802021 27A50011 0411FC84 00000000 00402021
   0411FD83 00000000 02802021 00002821 0411F964 00000000 00402021 0411FD7C
   00000000 02E09021 0000B021 24130001 02802021 02402821 24060080 27A70020
   0411F9B6 00000000 00402021 0411FD70 00000000 8FA30020 1860000E 00001021
   02421821 80630000 54600006 24420001 52600004 24420001 AFA20020 00009821
   24420001 8FA30020 0043202A 5480FFF5 02421821 24020080 14620003 02C3B021
   1000FFE3 26520080 02F6B021 A2C00000 A2C00001 3C029D00 8C4200B8 02E02021
   0040F809 00002821 8E030000 24020007 5462004D 8E020000 02802021 27A50011
   0411FC49 00000000 00402021 0411FD48 00000000 02802021 00002821 0411F929
   00000000 00402021 0411FD41 00000000 3C129D00 8E420040 0040F809 24040100
   00409821 8E5600C0 24120001 3C179D00 1000001D 241E000D 1452FFFF 02602021
   8EE200C8 0040F809 02C02821 0040B021 02602021 0411F730 00000000 02621821
   A07E0000 2404000A A0640001 02802021 02602821 24460002 27A70020 0411FABE
   00000000 00402021 0411FD21 00000000 82C20000 14400005 00000000 82C20001
   50400005 A2600000 82C20000 1440FFE2 00000000 A2600000 A2600001 02802021
   02602821 24060002 27A70020 0411FAAA 00000000 00402021 0411FD0D 00000000
   02802021 00002821 00003021 27A70020 0411FAA1 00000000 00402021 0411FD04
   00000000 8E020000 1440002D 3C029D00 8C420090 92230000 12A00006 A0430030
   3C029D00 8C420090 8EA30000 10000005 A043003C 3C029D00 8C420090 24030002
   A043003C 3C029D00 8C430090 80640030 8C420088 00041880 00621021 8C430000
   24020065 1062000B 3C109D00 8E020010 24050008 0040F809 00003021 8E030090
   8E020010 80640030 24050065 0040F809 00003021 3C109D00 8E030090 8E02001C
   80640030 0040F809 2405FFFD 8E030090 8E02001C 80640030 0040F809 24050006
   3C029D00 8C43008C 8C640044 3C02BF80 AC445830 8C640048 AC445800 8C63004C
   AC435840 8FBF0054 8FBE0050 8FB7004C 8FB60048 8FB50044 8FB40040 8FB3003C
   8FB20038 8FB10034 8FB00030 03E00008 27BD0058
   '.rodata
   'err0
   6E6B6E55 206E776F 6F727265 000A0D72
   'err1
   6B736944 72724520 0A0D726F 00000000
   'err2
   20746F4E 64616552 000A0D79
   'err3
   46206F4E 0D656C69 0000000A 20746F4E 6E65704F 0A0D6465 00000000 20746F4E
   62616E45 0D64656C 0000000A 46206F4E 20656C69 74737953 0A0D6D65 00000000
   20746F4E 6E756F6D 0D646574 0000000A
End CSub





Code for SPI2
sub mm.startup
pause 1000
' include initialisation for display driver here if required
 sdcard 0,2 'set up the chip select pin for the SDcard
'  28-pin: SPI2OUT-24, SPI2IN-6, SPI2CLK-26
'  44-pin: SPI2OUT-11, SPI2IN-23, SPI2CLK-15
end sub
sub load(f$)
 sdcard 6,f$
end
end sub
sub save(f$)
 sdcard 7,f$
end sub
Csub SDcard 'SPI2 version 2.05
   00000676
   'rcv_spi
   240300FF 3C02BF80 AC435A20 3C03BF80 8C625A10 30420080 1040FFFD 3C02BF80
   8C425A20 03E00008 304200FF
   'xmit_spi
   308400FF 3C02BF80 AC445A20 3C03BF80 8C625A10 30420080 1040FFFD 3C02BF80
   8C425A20 03E00008 304200FF
   'mem_set
   10C00006 00801021 00862021 A0450000 24420001 5444FFFE A0450000 03E00008
   00000000
   'mem_cmp
   2407FFFF 24C6FFFF 10C70008 00001021 80830000 80A20000 00621023 14400003
   24840001 1000FFF7 24A50001 03E00008 00000000
   'mystrlen
   80830000 10600006 00001021 24420001 00821821 80630000 5460FFFD 24420001
   03E00008 00000000
   'send_cmd
   27BDFFE0 AFBF001C AFB20018 AFB10014 AFB00010 309100FF 7C111420 04410009
   00A09021 24040077 00002821 0411FFF4 00000000 2C430002 10600034 8FBF001C
   3231007F 3C109D00 8E030090 8E02001C 80640030 0040F809 24050006 0411FFB2
   00000000 8E030090 8E02001C 80640030 0040F809 24050005 0411FFAB 00000000
   02202021 0411FFB3 00000000 00122602 0411FFB0 00000000 7E443C00 0411FFAD
   00000000 7E443A00 0411FFAA 00000000 324400FF 0411FFA7 00000000 24020040
   12220006 24040095 3A310048 24020001 24030087 00402021 0071200A 0411FF9D
   00000000 2410000A 0411FF8F 00000000 7C021C20 04610004 2610FFFF 321000FF
   1600FFF9 00000000 8FBF001C 8FB20018 8FB10014 8FB00010 03E00008 27BD0020
   'disk_readp
   27BDFFD8 AFBF0024 AFB40020 AFB3001C AFB20018 AFB10014 AFB00010 00809021
   00C09821 00E0A021 3C029D00 8C42008C 8C4300FC 30630008 00051240 24040051
   0043280A 0411FFA6 00000000 14400024 24100001 34109C40 241100FF 0411FF6A
   00000000 14510005 2610FFFF 1600FFFB 00000000 1000001A 24100001 240300FE
   14430017 24100001 00138823 26310202 12600006 02348823 0411FF5B 00000000
   2673FFFF 1660FFFC 00000000 02548021 0411FF55 00000000 A2420000 26520001
   1650FFFB 00000000 0411FF4F 00000000 2631FFFF 1620FFFC 00000000 00008021
   3C029D00 8C430090 8C42001C 80640030 0040F809 24050006 0411FF43 00000000
   02001021 8FBF0024 8FB40020 8FB3001C 8FB20018 8FB10014 8FB00010 03E00008
   27BD0028
   'clust2sect
   24A5FFFE 8C830008 2463FFFE 00A3182B 10600005 00001021 90830002 8C820014
   70A32002 00821021 03E00008 00000000
   'dir_rewind
   27BDFFE8 AFBF0014 AFB00010 00A08021 A4A00000 8CA50008 24030001 10A30015
   24020001 8C830008 00A3182B 50600012 8FBF0014 54A00008 AE05000C 90830000
   24020003 54620008 AE00000C 8C850010 10A00005 AE05000C 0411FFDD 00000000
   10000003 AE020010 8C820010 AE020010 00001021 8FBF0014 8FB00010 03E00008
   27BD0018
   'create_name
   27BDFFE0 AFBF001C AFB10018 AFB00014 00A08021 8C910004 02202021 24050020
   2406000B 0411FF18 00000000 8E080000 00002021 00001821 24070008 2409002F
   2406002E 240A0008 01031021 90420000 24630001 2C450021 14A00018 306300FF
   50490017 01031821 10460003 0087282B 14A00008 2445FF9F 54EA0011 01031821
   5446000F 01031821 01402021 1000FFEE 2407000B 30A500FF 2CA5001A 10A00003
   02242821 2442FFE0 304200FF A0A20000 24840001 1000FFE4 308400FF 01031821
   AE030000 2C420021 A222000B 00001021 8FBF001C 8FB10018 8FB00014 03E00008
   27BD0020
   'get_clust
   90840000 24020003 14820006 00001821 90A30015 00031A00 90A20014 00621825
   00031C00 90A2001B 00021200 90A4001A 00441025 03E00008 00621025
   'get_fat
   27BDFFE0 AFBF001C 2CA20002 1440001B 24030001 8C820008 00A2102B 10400018
   00601021 000519C2 8C82000C 30A6007F 27A40010 00622821 00063080 24070004
   0411FF31 00000000 1440000C 24030001 93A30013 00031E00 93A20012 00021400
   00621825 93A20010 00621825 93A20011 00021200 00621825 7C63D800 00601021
   8FBF001C 03E00008 27BD0020
   'dir_next
   27BDFFE0 AFBF001C AFB20018 AFB10014 AFB00010 00808821 00A08021 94B20000
   26520001 3252FFFF 12400028 24020003 8CA30010 50600026 8FBF001C 3242000F
   54400021 A6120000 24630001 ACA30010 8CA5000C 14A00007 00121902 94830004
   0243182B 14600017 24020003 10000018 8FBF001C 90820002 2442FFFF 00621024
   54400011 A6120000 0411FFBA 00000000 00402821 2C430002 1460000C 24020001
   8E230008 00A3182B 10600008 24020003 AE05000C 02202021 0411FF39 00000000
   AE020010 A6120000 00001021 8FBF001C 8FB20018 8FB10014 8FB00010 03E00008
   27BD0020
   'dir_find
   27BDFFD8 AFBF0024 AFB30020 AFB2001C AFB10018 AFB00014 00809821 00A08821
   00C09021 0411FF31 00000000 14400021 00408021 96260000 30C6000F 02402021
   8E250010 00063140 24070020 0411FED2 00000000 0002802B 16000017 02001021
   92420000 50400013 24100003 9242000B 30420008 14400008 02602021 02402021
   8E250004 2406000B 0411FE64 00000000 10400008 02602021 02202821 0411FF9F
   00000000 1040FFE3 00408021 10000002 02001021 02001021 8FBF0024 8FB30020
   8FB2001C 8FB10018 8FB00014 03E00008 27BD0028
   'follow_path
   27BDFFE0 AFBF001C AFB20018 AFB10014 AFB00010 00809021 00A08021 AFA7002C
   80E20000 24030020 14430006 00C08821 24E70001 AFA7002C 80E20000 5043FFFD
   24E70001 2403002F 54430004 AE000008 24E70001 AFA7002C AE000008 8FA2002C
   90420000 2C420020 10400008 02002021 02402021 02002821 0411FEE7 00000000
   1000001B A2200000 02002021 27A5002C 0411FF02 00000000 14400015 02402021
   02002821 02203021 0411FFA0 00000000 14400010 8FBF001C 8E030004 9063000B
   5460000D 8FB20018 9222000B 30420010 10400006 02402021 02202821 0411FF28
   00000000 1000FFE8 AE020008 24020003 8FBF001C 8FB20018 8FB10014 8FB00010
   03E00008 27BD0020
   'pf_lseek
   27BDFFD8 AFBF0024 AFB30020 AFB2001C AFB10018 AFB00014 00808021 1080004F
   24020005 90830001 30630001 1060004B 24020004 8C82001C 0045902B 00B2100A
   00409021 8C830018 AC800018 12400043 00001021 90910002 10600012 00118A40
   2463FFFF 2642FFFF 0051001B 022001F4 00001012 0071001B 022001F4 00002012
   0044102B 54400008 8E050020 00111023 00431824 AE030018 02439023 10000003
   8E050024 8E050020 AE050024 0232102B 10400018 00119823 02519023 02002021
   0411FEFC 00000000 00402821 2C420002 54400006 A2000001 8E020008 00A2102B
   54400004 AE050024 A2000001 1000001B 24020001 8E020018 00511021 AE020018
   02531021 00511821 0223182B 5460FFEB 00409021 8E020018 00529021 AE120018
   02002021 0411FE6E 00000000 54400004 92040002 A2000001 10000008 24020001
   2484FFFF 8E030018 00031A42 00831824 00431021 AE020028 00001021 8FBF0024
   8FB30020 8FB2001C 8FB10018 8FB00014 03E00008 27BD0028
   'pf_read
   27BDFFD0 AFBF002C AFB60028 AFB50024 AFB40020 AFB3001C AFB20018 AFB10014
   AFB00010 00808021 00A0A821 00E09821 ACE00000 1080004A 24020005 90830001
   30630001 10600046 24020004 8C92001C 8C820018 02429023 0246102B 00C2900A
   1240003F 00001021 00A0A021 24160200 8E020018 304301FF 5460001F 8E060018
   00021A42 92110002 2631FFFF 00718824 323100FF 1620000E 02002021 54400003
   8E050024 10000003 8E020020 0411FEA3 00000000 2C430002 50600004 AE020024
   A2000001 10000026 24020001 02002021 8E050024 0411FE24 00000000 14400004
   00518821 A2000001 1000001D 24020001 AE110028 8E060018 30C601FF 02C61023
   0052882B 0251100A 00408821 00002021 0295200B 8E050028 00403821 0411FDC9
   00000000 50400004 8E020018 A2000001 1000000B 24020001 00511021 AE020018
   02519023 8E620000 00511021 12400003 AE620000 1000FFC6 0291A021 00001021
   8FBF002C 8FB60028 8FB50024 8FB40020 8FB3001C 8FB20018 8FB10014 8FB00010
   03E00008 27BD0030
   'disk_initialize
   27BDFFD0 AFBF002C AFB30028 AFB20024 AFB10020 AFB0001C 240300C7 3C02BF80
   AC435A30 3C029D00 8C430090 8C42001C 80640030 0040F809 24050006 2410000A
   0411FD20 00000000 2610FFFF 321000FF 1600FFFB 24040040 00002821 0411FD4F
   00000000 24030001 14430061 3C029D00 24040048 240501AA 0411FD48 00000000
   24030001 14430037 240400E9 27B00010 27B10014 0411FD0B 00000000 A2020000
   26100001 1611FFFB 93A30012 24020001 1462004E 00008021 93A30013 240200AA
   1462004B 3C029D00 10000008 24112710 0040F809 24040064 2631FFFF 16200005
   240400E9 1000003F 00008021 3C109D00 240400E9 3C054000 0411FD28 00000000
   5440FFF3 8E020004 12200038 00008021 2404007A 00002821 0411FD20 00000000
   14400033 3C029D00 24110004 0411FCE5 00000000 27A40010 00901821 26100001
   1611FFFA A0620000 93B00010 32100040 2402000C 24030004 0070100A 10000023
   00408021 00002821 0411FD0C 00000000 2C420002 24030002 24100001 0062800B
   240300E9 24130041 0062980B 24112710 10000006 3C129D00 0040F809 24040064
   2631FFFF 52200011 00008021 02602021 00002821 0411FCF9 00000000 5440FFF6
   8E420004 52200009 00008021 24040050 24050200 0411FCF1 00000000 10000003
   0002800B 10000002 3C029D00 3C029D00 8C43008C AC7000FC 8C430090 8C42001C
   80640030 0040F809 24050006 0411FCAD 00000000 12000005 3C029D00 8C420090
   8043003C 3C02BF80 AC435A30 2E020001 8FBF002C 8FB30028 8FB20024 8FB10020
   8FB0001C 03E00008 27BD0030
   'disk_writep
   27BDFFE0 AFBF001C AFB20018 AFB10014 AFB00010 10800014 00808021 30A5FFFF
   10A00052 00009021 97828010 1040004F 00858821 92040000 26100001 0411FC99
   00000000 97828010 2442FFFF 3042FFFF 12110045 A7828010 5440FFF7 92040000
   10000042 00009021 10A00016 97908010 3C029D00 8C42008C 8C4300FC 30630008
   00051240 24040058 0043280A 0411FCB0 00000000 14400035 24120001 240400FF
   0411FC80 00000000 240400FE 0411FC7D 00000000 24020200 A7828010 1000002B
   00009021 26100002 12000008 2610FFFF 2411FFFF 00002021 0411FC72 00000000
   2610FFFF 1611FFFC 00002021 0411FC62 00000000 3042001F 24030005 14430010
   24120001 10000005 241207D0 0040F809 240403E8 10000003 2652FFFF 241100FF
   3C109D00 0411FC54 00000000 50510004 2E520001 5640FFF5 8E020004 24120001
   3C029D00 8C430090 8C42001C 80640030 0040F809 24050006 0411FC47 00000000
   10000003 02401021 00009021 02401021 8FBF001C 8FB20018 8FB10014 8FB00010
   03E00008 27BD0020
   'pf_write
   27BDFFD0 AFBF002C AFB60028 AFB50024 AFB40020 AFB3001C AFB20018 AFB10014
   AFB00010 00808021 00C09021 00E09821 ACE00000 1080007B 24020005 90830001
   30640001 10800077 24020004 14C00010 30630040 5060000A 92020001 00002021
   00002821 0411FF84 00000000 50400004 92020001 A2000001 1000006A 24020001
   304200BF A2020001 10000066 00001021 54600006 8E03001C 8E030018 2402FE00
   00621024 AE020018 8E03001C 8E020018 00621023 0052182B 14600005 00000000
   00A0A021 24150200 10000005 2416FFBF 1440FFFB 00409021 10000053 8FBF002C
   8E020018 304301FF 54600029 8E110018 00021A42 92110002 2631FFFF 00718824
   323100FF 1620000E 02002021 54400003 8E050024 10000003 8E020020 0411FD30
   00000000 2C430002 50600004 AE020024 A2000001 1000003B 24020001 02002021
   8E050024 0411FCB1 00000000 14400004 00512821 A2000001 10000032 24020001
   AE050028 00002021 0411FF43 00000000 50400004 92020001 A2000001 10000029
   24020001 34420040 A2020001 8E110018 323101FF 02B18823 0232102B 0242880A
   02802021 02202821 0411FF33 00000000 50400004 8E020018 A2000001 10000019
   24020001 00511021 AE020018 8E620000 00511021 AE620000 8E020018 304201FF
   5440000D 02519023 00002021 00002821 0411FF21 00000000 50400004 92020001
   A2000001 10000007 24020001 00561024 A2020001 02519023 1640FFB1 0291A021
   00001021 8FBF002C 8FB60028 8FB50024 8FB40020 8FB3001C 8FB20018 8FB10014
   8FB00010 03E00008 27BD0030
   'check_fs
   27BDFFE0 AFBF001C AFB10018 AFB00014 00808021 00A08821 240601FE 24070002
   0411FC1E 00000000 14400028 24030003 92040001 00042200 92020000 00822025
   7C042620 2402AA55 14820020 24030002 02002021 02202821 24060036 24070002
   0411FC0E 00000000 1440000A 02002021 92040001 00042200 92020000 00822025
   7C042620 24024146 10820010 00001821 02002021 02202821 24060052 24070002
   0411FBFE 00000000 14400008 24030001 92030001 00031A00 92020000 00621825
   7C031E20 38634146 0003182B 00601021 8FBF001C 8FB10018 8FB00014 03E00008
   27BD0020
   'pf_mount
   27BDFFB8 AFBF0044 AFB10040 AFB0003C 00808021 0411FE39 00000000 30420001
   14400087 24030002 27A40010 00002821 0411FFBA 00000000 24030001 1443001A
   00008821 27A40010 00002821 240601BE 24070010 0411FBD8 00000000 14400078
   24030001 93A20014 10400075 24030006 93B1001B 00118E00 93A2001A 00021400
   02228825 93A20018 02228825 93A20019 00021200 02228825 27A40010 02202821
   0411FF9E 00000000 24040003 10440064 24030001 14400062 24030006 27A40010
   02202821 2406000D 24070024 0411FBBA 00000000 1440005A 24030001 93A2001A
   00021200 93A30019 00431025 1440000C 93A30013 93A3002A 00031E00 93A20029
   00021400 00621025 93A30027 00431025 93A30028 00031A00 00431025 93A30013
   70431002 93A60012 00063200 93A30011 00C33025 02268821 AE11000C 93A50010
   A2050002 93A40015 00042200 93A30014 00832025 A6040004 93A30017 00031A00
   93A70016 00671825 1460000B 00042102 93A70026 00073E00 93A30025 00031C00
   00E31825 93A70023 00671825 93A70024 00073A00 00671825 00661823 00621823
   00641823 0065001B 00A001F4 00003012 24C50002 AE050008 24C6F00A 3407EFFF
   00C7302B 2CA70FF7 24030002 0066380B 3403FFF7 00A3282B 10A0001F 24030003
   10E00017 24030006 24030003 14E3000D A2070000 93A50032 00052E00 93A30031
   00031C00 00A32825 93A3002F 00A32825 93A30030 00031A00 00A31825 10000003
   AE030010 00511821 AE030010 02248821 02221021 AE020014 A2000001 00001821
   00601021 8FBF0044 8FB10040 8FB0003C 03E00008 27BD0048 1000FFE6 A2030000
   'pf_open
   27BDFFA0 AFBF005C AFB10058 AFB00054 00808821 00A03821 10800025 24100005
   A0800001 27A20024 AFA20014 27A50010 27A60030 0411FC97 00000000 1440001C
   00408021 93A20030 10400018 93A2003B 30420010 54400016 24100003 02202021
   27A50030 0411FBEB 00000000 AE220020 93A3004F 00031E00 93A2004E 00021400
   00621025 93A3004C 00431025 93A3004D 00031A00 00431025 AE22001C AE200018
   24020001 10000002 A2220001 24100003 02001021 8FBF005C 8FB10058 8FB00054
   03E00008 27BD0060
   'pf_opendir
   27BDFFB0 AFBF004C AFB10048 AFB00044 00808021 00A08821 00C03821 10800018
   24020005 27A20010 ACA20004 27A6001C 0411FC66 00000000 14400012 8FBF004C
   93A2001C 1040000B 02002021 93A30027 30630010 1060000A 24020003 02002021
   27A5001C 0411FBB9 00000000 AE220008 02002021 02202821 0411FB5A 00000000
   8FBF004C 8FB10048 8FB00044 03E00008 27BD0050
   'get_fileinfo
   8C830010 10600036 24C20009 90A30000 24040020 1064000E 00A02021 244A0008
   24090005 240800E5 10000003 240B0020 106B0007 24840001 00693826 0107180A
   A0430000 24420001 544AFFF9 90830001 90A40008 24030020 1083000A 2403002E
   A0430000 90A30008 24040020 1464001E 24420001 10000004 90A3000B A0430000
   24420001 90A3000B A0C30008 90A4001F 00042600 90A3001E 00031C00 00831825
   90A4001C 00641825 90A4001D 00042200 00641825 ACC30000 90A30019 00031A00
   90A40018 00641825 A4C30004 90A30017 00031A00 90A40016 00641825 A4C30006
   03E00008 A0400000 A0430000 90A30009 24040020 1064FFE3 24420001 A0430000
   90A3000A 1464FFDD 24420001 1000FFDE 90A3000B
   'dir_read
   27BDFFD8 AFBF0024 AFB40020 AFB3001C AFB20018 AFB10014 AFB00010 00809821
   00A08021 00C08821 24020003 241200E5 10000019 2414002E 30C6000F 02202021
   00063140 24070020 0411FAA7 00000000 0002102B 54400016 AE000010 92230000
   50600012 24020003 10720005 9224000B 10740003 30840008 1080000E 8FBF0024
   02602021 02002821 0411FB78 00000000 54400007 AE000010 8E050010 54A0FFE6
   96060000 10400003 8FBF0024 AE000010 8FBF0024 8FB40020 8FB3001C 8FB20018
   8FB10014 8FB00010 03E00008 27BD0028
   'pf_readdir
   27BDFFB0 AFBF004C AFB20048 AFB10044 AFB00040 00808821 00A08021 00C09021
   1080001B 24020005 27A20010 14C00005 ACA20004 0411FACD 00000000 10000015
   8FBF004C 27A6001C 0411FFB9 00000000 24030003 10430004 02002021 1440000D
   8FBF004C 02002021 27A5001C 02403021 0411FF6A 00000000 02202021 02002821
   0411FB46 00000000 38430003 0003100A 8FBF004C 8FB20048 8FB10044 8FB00040
   03E00008 27BD0050
   'getFPC
   27BDFFF8 AFBF0004 00852023 03E42021 ACC40000 8FBF0004 03E00008 27BD0008
   'errstring
   27BDFFE0 AFBF001C AFB00018 00808021 00002021 3C059D00 24A518D0 27A60010
   0411FFEF 00000000 8FA20010 1200003C 24030001 16030006 24030002 8FA30010
   3C049D00 2484256C 10000012 00832021 56030006 3C049D00 8FA30010 3C049D00
   2484257C 10000013 00832021 2484255C 00822021 24020003 16020007 24020004
   8FA30010 3C049D00 24842588 10000011 00832021 24020004 16020007 24020005
   8FA30010 3C049D00 24842594 10000011 00832021 24020005 16020007 24020006
   8FA30010 3C049D00 248425A4 10000010 00832021 24020006 16020007 24020007
   8FA30010 3C049D00 248425B4 10000008 00832021 24020007 16020006 3C029D00
   8FA30010 3C049D00 248425C8 00832021 3C029D00 8C4200BC 0040F809 00000000
   8FBF001C 8FB00018 03E00008 27BD0020
   'main
   27BDFFA8 AFBF0054 AFBE0050 AFB7004C AFB60048 AFB50044 AFB40040 AFB3003C
   AFB20038 AFB10034 AFB00030 00808021 00A08821 00C0A821 3C029D00 8C430090
   80640030 8C430088 00041080 00431021 8C430000 24020065 1462000A 00E09821
   3C02BF80 34038260 AC435A00 24030C00 AC435A40 3C039D00 8C630090 8063003C
   AC435A30 3C029D00 8C52008C 26540050 8E060000 24020001 10C20006 26570078
   24020006 10C20003 24020007 14C20006 24020004 82250000 04A10007 00001021
   1000000F 03A52821 14C2001A 24020007 1000FFF9 82250000 27A40010 00821821
   02222021 90840000 A0640000 24420001 00A2182A 1060FFF9 27A40010 03A52821
   24020006 14C20005 A0A00011 3C029D00 8C4200C4 0040F809 00000000 8E060000
   24020001 10C20007 24020006 10C20005 24020007 10C20003 24020004 54C200CB
   8E030000 3C029D00 8C430090 80640030 8C430088 00041080 00431021 8C430000
   24020065 10620003 24040007 0411FF58 00000000 3C02BF81 8C44F220 7C84D800
   3C030661 3463A053 1083000B 2402002C 3C02BF81 8C43F220 7C63D800 3C020660
   3442A053 00621026 2403002C 24040060 0082180B 00601021 3C039D00 8C630088
   00431021 8C430000 24020065 10620084 3C029D00 8C420010 3C03BF81 8C65F220
   7CA5D800 3C030661 3463A053 10A3000B 2404000B 3C03BF81 8C64F220 7C84D800
   3C030660 3463A053 00832026 2403000B 24050018 00A4180B 00602021 24050008
   0040F809 00003021 3C029D00 8C420010 3C03BF81 8C65F220 7CA5D800 3C030661
   3463A053 10A3000B 2404000B 3C03BF81 8C64F220 7C84D800 3C030660 3463A053
   00832026 2403000B 24050018 00A4180B 00602021 24050064 0040F809 00003021
   3C029D00 8C420010 3C03BF81 8C65F220 7CA5D800 3C030661 3463A053 10A3000B
   24040017 3C03BF81 8C64F220 7C84D800 3C030660 3463A053 00832026 24030017
   24050006 00A4180B 00602021 24050002 0040F809 00003021 3C029D00 8C420010
   3C03BF81 8C65F220 7CA5D800 3C030661 3463A053 10A3000B 24040017 3C03BF81
   8C64F220 7C84D800 3C030660 3463A053 00832026 24030017 24050006 00A4180B
   00602021 24050064 0040F809 00003021 3C029D00 8C420010 3C03BF81 8C65F220
   7CA5D800 3C030661 3463A053 10A3000B 2404000F 3C03BF81 8C64F220 7C84D800
   3C030660 3463A053 00832026 2403000F 2405001A 00A4180B 00602021 24050008
   0040F809 00003021 3C029D00 8C420010 3C03BF81 8C65F220 7CA5D800 3C030661
   3463A053 10A3000B 2404000F 3C03BF81 8C64F220 7C84D800 3C030660 3463A053
   00832026 2403000F 2405001A 00A4180B 00602021 24050064 0040F809 00003021
   3C02BF81 8C43FA90 24040004 7C831804 AC43FA90 3C02BF81 8C43FB60 7C831804
   AC43FB60 3C02BF80 34038260 AC435A00 24030C00 AC435A40 3C029D00 8C42008C
   AC4000F8 02802021 0411FD0F 00000000 00402021 0411FEA6 00000000 8E030000
   24020001 1462000A 24020002 02802021 27A50011 0411FD9C 00000000 00402021
   0411FE9B 00000000 8E030000 24020002 54620022 8E030000 8EA50000 04A00006
   02802021 0411FA77 00000000 00402021 0411FE8F 00000000 8E660000 28C20100
   1040000B 02802021 26250001 27A70020 0411FACA 00000000 00402021 0411FE84
   00000000 8FA20020 10000008 A2220000 02202821 27A70020 0411FAC0 00000000
   00402021 0411FE7A 00000000 8FA20020 8FA30068 AC620000 8E030000 24020003
   5462008D 8E030000 8EA20000 04410005 3C029D00 8C42008C 8C4200F8 AEA20000
   3C029D00 8C42008C 8C4400F8 8E630000 00831821 AC4300F8 8EB60000 241EFE00
   02DEF024 02802021 03C02821 0411FA45 00000000 00402021 0411FE5D 00000000
   8E660000 28C20100 02221021 AFA2002C 8EA20000 105E005B 32D601FF AFB60028
   3C029D00 8C420040 0040F809 24040200 0040B021 02802021 00402821 24060200
   27A70020 0411FA8D 00000000 00402021 0411FE47 00000000 02802021 03C02821
   0411FA28 00000000 00402021 0411FE40 00000000 8E650000 8FA40028 00852821
   2CA20201 14400003 0000F021 24BEFE00 24050200 8FA30028 0065102A 10400009
   8FA3002C 8FA40028 02C41021 02C52821 90640000 A0440000 24420001 1445FFFC
   24630001 02802021 02C02821 8FA60020 27A70020 0411FBC0 00000000 00402021
   0411FE23 00000000 8FA20020 8FA30028 00431023 8FA40068 AC820000 8E630000
   0062202A 0064100B 8FA30068 13C00012 AC620000 8E650000 00BE2823 02802021
   8FA2002C 00452821 03C03021 27A70020 0411FBA9 00000000 00402021 0411FE0C
   00000000 8FA40068 8C830000 8FA20020 00621021 AC820000 02802021 00002821
   00003021 27A70020 0411FB9B 00000000 00402021 0411FDFE 00000000 10000016
   8E030000 02802021 8FA5002C 27A70020 0411FB91 00000000 00402021 0411FDF4
   00000000 8FA20020 8FA30068 AC620000 02802021 00002821 00003021 27A70020
   0411FB85 00000000 00402021 0411FDE8 00000000 8E030000 24020004 5462000A
   8E030000 02802021 02E02821 27A60011 0411FD0F 00000000 00402021 0411FDDC
   00000000 8E030000 24020005 5462003C 8E030000 265200A0 02802021 02E02821
   02403021 0411FDA0 00000000 00402021 0411FDCF 00000000 92430008 24020016
   5462000A 82420009 02802021 02E02821 02403021 0411FD94 00000000 00402021
   0411FDC3 00000000 82420009 50400023 A2200000 92420008 30420010 54400006
   2402003C 24130001 02331821 00001021 1000000C 2405000C A2220001 24020044
   A2220002 24020069 A2220003 24020072 A2220004 2402003E A2220005 1000FFF2
   24130006 02422021 90840009 A0640000 24420001 1445FFFB 24630001 2402000C
   AFA20020 26440009 0411F7A3 00000000 2673FFFF 02629821 A2330000 8E030000
   24020006 5462003E 8E030000 3C029D00 8C420040 0040F809 3404C800 0040B821
   02802021 27A50011 0411FC8F 00000000 00402021 0411FD8E 00000000 02802021
   00002821 0411F96F 00000000 00402021 0411FD87 00000000 02E09021 0000B021
   24130001 02802021 02402821 24060080 27A70020 0411F9C1 00000000 00402021
   0411FD7B 00000000 8FA30020 1860000E 00001021 02421821 80630000 54600006
   24420001 52600004 24420001 AFA20020 00009821 24420001 8FA30020 0043202A
   5480FFF5 02421821 24020080 14620003 02C3B021 1000FFE3 26520080 02F6B021
   A2C00000 A2C00001 3C029D00 8C4200B8 02E02021 0040F809 00002821 8E030000
   24020007 5462004D 8E020000 02802021 27A50011 0411FC54 00000000 00402021
   0411FD53 00000000 02802021 00002821 0411F934 00000000 00402021 0411FD4C
   00000000 3C129D00 8E420040 0040F809 24040100 00409821 8E5600C0 24120001
   3C179D00 1000001D 241E000D 1452FFFF 02602021 8EE200C8 0040F809 02C02821
   0040B021 02602021 0411F73B 00000000 02621821 A07E0000 2404000A A0640001
   02802021 02602821 24460002 27A70020 0411FAC9 00000000 00402021 0411FD2C
   00000000 82C20000 14400005 00000000 82C20001 50400005 A2600000 82C20000
   1440FFE2 00000000 A2600000 A2600001 02802021 02602821 24060002 27A70020
   0411FAB5 00000000 00402021 0411FD18 00000000 02802021 00002821 00003021
   27A70020 0411FAAC 00000000 00402021 0411FD0F 00000000 8E020000 1440002D
   3C029D00 8C420090 92230000 12A00006 A0430030 3C029D00 8C420090 8EA30000
   10000005 A043003C 3C029D00 8C420090 24030002 A043003C 3C029D00 8C430090
   80640030 8C420088 00041880 00621021 8C430000 24020065 1062000B 3C109D00
   8E020010 24050008 0040F809 00003021 8E030090 8E020010 80640030 24050065
   0040F809 00003021 3C109D00 8E030090 8E02001C 80640030 0040F809 2405FFFD
   8E030090 8E02001C 80640030 0040F809 24050006 8FBF0054 8FBE0050 8FB7004C
   8FB60048 8FB50044 8FB40040 8FB3003C 8FB20038 8FB10034 8FB00030 03E00008
   27BD0058
   '.rodata
   'err0
   6E6B6E55 206E776F 6F727265 000A0D72
   'err1
   6B736944 72724520 0A0D726F 00000000
   'err2
   20746F4E 64616552 000A0D79
   'err3
   46206F4E 0D656C69 0000000A 20746F4E 6E65704F 0A0D6465 00000000 20746F4E
   62616E45 0D64656C 0000000A 46206F4E 20656C69 74737953 0A0D6D65 00000000
   20746F4E 6E756F6D 0D646574 0000000A
End CSub

Edited 2020-03-14 18:09 by matherp
 
jman

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Location: New Zealand
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Posted: 01:48am 15 Mar 2020
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Regards
Jman
 
PicFan
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Joined: 18/03/2014
Location: Austria
Posts: 133
Posted: 07:40pm 16 Mar 2020
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Thank you !  

Best regards !

Wolfgang
Edited 2020-03-17 05:41 by PicFan
 
Cyber

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Joined: 13/01/2019
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Posted: 03:14pm 04 May 2020
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Looks superb! I'll try. Thank you!

One question: what MM2 stand for?
Is it Micromite MkII?
Edited 2020-05-05 02:21 by Cyber
 
MarKoZaKKa
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Joined: 14/02/2015
Location: Italy
Posts: 7
Posted: 10:58am 05 May 2020
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Hello,
I'm building my own MkII LCD backpack on rapid prototype board. Got a question about SD card reader embedded on display as I found no hints about this in the forum (my English is bad so maybe I used wrong word combinations, but i tried a lot of times...)
I suppose I have to wire the contacts marked "SD" on display to the MM in order to use it, isnt'it?

Thank you, Best Regards.
MMZ (this doesn't stand for MicroMiteZ ;-) )
 
matherp
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Posted: 11:18am 05 May 2020
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  Quote  I suppose I have to wire the contacts marked "SD" on display to the MM in order to use it, isnt'it?


Yes: the MOSI, MISO and clock pins must be connected in parallel with the touch controller. Make sure you have a pullup resistor on the touch controller CS pin even if you are not using it.
Then connect the SDcard CS pin to any free pin on the Micromite. Edit MM.STARTUP to reflect the pin you are using.
Edited 2020-05-05 21:29 by matherp
 
MarKoZaKKa
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Posted: 12:08pm 05 May 2020
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Ok, thank you.
I will use also touch option. What about if I will use the SD connecting it to SPI2 (obviously using different pins for  display connections). I have a lot of unused I/O as I will use this circuit to control home heating system with just a couple of temperature  sensors and a wifi connection. Did you try this configuration?
Thanks again!
 
LouisG
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Joined: 19/03/2016
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Posted: 12:44pm 05 May 2020
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Thanks from me too, Matherp. I'm also interested in using the display SD card.

Question: Is the wiring

SD_MOSI  to  T_DIN
SD_MISO  to  T_DO

or is it the other way round?

... Louis


-
 
matherp
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Posted: 12:54pm 05 May 2020
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SD_MOSI  to  T_DIN
SD_MISO  to  T_DO

is correct.

MasterOutSlaveIN
MasterInSlaveOut

The Micromite is the master so T_DIN will receive the master's Output, T_DO will send data to the master's Input.

MISO and MOSI are always the best way to describe the signals as SPI is always single master, i.e. the clock generator, which in our case is always the Micromite
Edited 2020-05-05 22:57 by matherp
 
LouisG
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Posted: 01:22pm 05 May 2020
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Thanks a lot, Matherp
  L.


-
 
MarKoZaKKa
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Posted: 07:39am 19 May 2020
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Hello Matherp,
I'm finally ready with my prototype.
I connected the ILI9341 display SD lines to MM2 this way:
SD_CS   ->pin2
SD_MOSI ->pin6  (SPIN)
SD_MISO ->pin24 (SPOUT)
SD_SCK  ->pin26

and I'm obviously using the SPI2 version of your code.

And it doesn't work. I suppose I've swapped the in/out lines.
Please, can you confirm if my wiring is right or not?

Thank you.

Bests, MMZ
 
matherp
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Posted: 07:44am 19 May 2020
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  Quote  Please, can you confirm if my wiring is right or not?


Wiring looks wrong

MasterOutSlaveIN
MasterInSlaveOut

If the pinout uses the term MOSI that always refers to the processors pins
 
cosmic frog
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Posted: 12:13pm 28 Jul 2020
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Hi Matherp,
been playing around with this for a bit and finding it very usefull but cannot seem to get it to load a picture (been trying to use part of the code found here - 2016-04-01_152624_newpic), It's from 2016 so maybe no good now.
Any chance of some example code for loading pictures on the ILI9341 using this updated code?

Thanks. Dave.
 
cosmic frog
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Posted: 02:03pm 04 Aug 2020
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Still having problems trying to display a picture with this.
Getting this error - Error: SDCARD is not declared.

Thanks.

Dave.
 
phil99

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Posted: 07:48am 13 Apr 2021
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Very happy with the SPI2 version. It does everything I need, however I can't afford the extra pins due to ILI9341 touch LCD on SPI1. Are there any tips on getting the SPI1 version to work with the LCD. The LCD works ok until any SDCARD command is used and then goes blank until reset. The only result from SDCARD commands is "Error : Not Ready".
I am using the SD socket on the LCD, with no problems on SPI2.
 
Mixtel90

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Posted: 11:13am 13 Apr 2021
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Are you using a dedicated pin for the SD card CS signal? You'll definitely need that as it's the only way the 'mite can select it. Apart from that I think it should be able to share the other SPI1 pins ok.
Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs
 
phil99

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To Mixtel90
Thanks for your reply. Yes I used the same CS pin as when it was on SPI2, including it in MM.STARTUP. Also tried 10k pullups on the CS pins for Touch, LCD and SD individually and in all combinations with no change.
 
Mixtel90

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Odd... I think that as soon as CS pins are released the devices *should* tri-state so they disappear from the bus (the 10k pull-ups help speed up that release). It sounds as if either something isn't doing that or a CS is active at the wrong time. You could try slowing the SPI down in SDcard 0 or temporarily disabling Touch to see if things work any better.
Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs
 
phil99

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To Mixtel90
Tried a variety of speeds down to the lowest with no change. As a last resort tried an older ILI9341 panel, 2.8 TFT SPI240*320 V1.1 and it mostly works on the lowest speed and with 10k pullups on all three CS pins. The panel I had been using is V1.2.
Sometimes after using 'gui test touch' the SD won't work and other times touch won't work after accessing the SD. In either case a reset is required to get them working again.

Other MMs have a FILES command that is very handy. Here is one for the MX170 library.

Sub FILES(Path As STRING)
On ERROR skip 14
Local BUFF$,Dir%=0,Fil%=-1
SDCARD 4,Path : Pause 100
Print : Print "Directory  SD/"Path
Do
 If MM.Errno >0 Then :Print "Exit due to error";MM.Errno,MM.ErrMsg$ :Erase BUF F$,Fil%,Dir%,Path :Exit :EndIf
 SDCARD 5,BUFF$ : Print BUFF$
 If Left$(BUFF$,5)="<Dir>" Then :Dir%=Dir%+1 :Else :Fil%=Fil%+1 :EndIf
Loop Until BUFF$="" Or (Fil% + Dir%) >150
Print "files =";Fil%," directories =";Dir%
If (Fil% + Dir%) >150 Then : Print "More files than can be listed":EndIf
End Sub

To read directories other than "/" add the path in quotes.
eg.
FILES "MMFiles/temp"

EDIT
Added some error handling for some 'difficult' SD cards. Normal error function does not clear declared variables, preventing a re-try.
PetitFS does not seem like too many files in a directory so this exits after 150, though the actual limit may be a bit higher.
Edited 2021-04-26 10:24 by phil99
 
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