Guru
Joined: 11/12/2012
Location: United KingdomPosts: 10850
| Posted: 11:45am 13 Mar 2025 |
V6.00.02RC0 is available on
https://geoffg.net/Downloads/picomite/PicoMite_Beta.zip
Changes from b18
Installing this will re-initialise all flash and options etc.
New Commands and Functions
Command BIT(var%,bitno)=0 or 1 'sets a specific bit (0-63) in an integer variable
Function BIT(var%,bitno) 'returns the value of a specific bit (0-63) in a integer variable (0 or 1)
These make it very easy to use flags in a program with minimum memory usage
Command BYTE(var$,byteno)=0 to 255 ' sets a specific byte in a string to an integer value
function byte(var$,byteno) 'returns the integer value of a specific byte in a string (0-255)
these are the equivalent of the command MID$(var$,byteno,1)=CHR$(value) and
the function ASC(MID$(var$,bytebo,1)) but faster and more obvious
Functions MM.HRES, MM.VRES, MM.VER, M.I2C, MM.FONTHEIGHT, MM.FONTWIDTH, MM.PS2, MM.HPOS, MM.VPOS, MM.ONEWIRE, MM.Errno, MM.ErrMsg$, MM.WATCHDOG, MM.DEVICE$
are now all implemented as written and none of them are converted to MM.INFO calls by the pre-processor
function TEMPR(Pinno [,timeout]) 'new optional parameter timeout to override the default (200mSec) to allow for slow devices
command TEMPR START GPno [,resolution(0-3)] [,timeout] 'new optional parameter timeout to override the default (100, 200, 400, or 800mSec) to allow for slow devices
Other changes already in b18
Bugs fixed
Various fixes to OPTION LIST
Fixes bug in forward references in PIO assembler when the starting line number is > 1
Fixes bug in PRINT @(x,y) when outputting to a computer console
By default disables heartbeat and enables access to all pins on RP2350B
Allows selection of GP19 for PSRAM PIN
Fixes bug in TILE HEIGHT 12 command in PicoMiteVGA
Fixes bug in TILE HEIGHT command in PicoMiteHDMI[USB] setting the screen to white
Fixes bug in LINSTR changing the regular expression if a variable
Fixes various bugs in PIO assembler
Fixes bug in DMA to/from PIO2 on the RP2350
Fixes memory leak in PLAY MP3 when using SPI audio
Fixes bug causing crash when trying to play all audio files in a directory if the number exceeds 20
Fixes bug in LINE PLOT
Fixes bug with ADC when system clock is above about 252MHz
Fixes onewire/tempr functionality when using parasitic connection
Changes initialisation of HDMI pins to increase drive needed for some monitors
Changes and enhancements
the default CPU speed for the standard RP2040 PicoMite is now 200MHz. Raspberry Pi have now officially approved the RP2040 for that speed with a voltage of 1.15V which is what is set
Changing MODE to be the same now clears all framebuffers etc.
Layer buffer now available in VGA mode 1 (252MHz and above) and all HDMI mode 1 resolutions
Supports ; at the end of LONGSTRING PRINT to suppress the CR/LF
I2C(2) OPEN now supports 1000 as a speed
FILE command can now be used in a program
CHAIN fname$ [,cmdline$] ' Allows the program to run another program with the variable space preserved - command is recommended to be used in top level program and not from within a subroutine (may work OK but not tested for side-effects)
EDIT FILE command used in a program will now only be memory limited the same as EDIT
SAVE CONTEXT [CLEAR]' saves the variable space and optionally clears it - command should be used in top level program and not from within a subroutine (may work OK but not tested for side-effects). If used in a subroutine a subsequent LOAD CONTEXT must DEFINITELY be in the same subroutine or a crash/corruption will DEFINITELY happen.
LOAD CONTEXT [KEEP]' restores the variable space to the previously saved state and optionally preserves the stored variables to allow a second LOAD if required.
RAM command (RP2350 with PSRAM only) functions like the FLASH command with 5 program slots available in PSRAM. All commands except RAM LOAD (copies a RAM slot to the main flash program space) can be used in a program.
RAM FILE LOAD n,fname$ [,O[VERWRITE]] can be used to load a RAM slot from a standard disk .BAS file
SHIFT-F3 to F10 now work for computer console. NB: Shift-F1, F2, F11, and F12 don't appear to send codes so can't work
PLAY MODFILE will preferentially use space in PSRAM if enabled for the file buffer (RP2350 only). In this case a modbuffer does not need to be enabled with the OPTION command
OPTION AUDIO I2S BCLKpin, DATApin
This allows a I2S DAC to be used to provide high quality Audio. The firmware transmits the data in 32-bit mode and FLAC, MP3 (RP2350 only), and WAV data is output with no loss of information.
This command reserves BCLKpin and BCLKpin+1 for the bit clock and word clock and Datapin for the I2S data. It requires an I2S DAC that can PLL the bitclock to create its own master clock. Tested on PCM5102A and TDA1387T .
For example:
OPTION AUDIO I2S GP1,GP5
GP1 is the bit clock
GP2 is the word clock
GP5 is the data pin
All normal audio should work TONE, MP3 (RP2350 only), FLAC, WAV, MOD, SOUND
SAVE PERSISTENT n%
'saves the value n% in memory that will survive a watchdog reset (RP2040 and RP2350) or a physical reset (RP2040 only)
MM.INFO(PERSISTENT)
' recovers any value saved as above
PIO INIT MACHINE pio%,
statemachine%, clockspeed
[,pinctrl] [,execctrl] [,shiftctrl]
[,startinstruction] [,sideout [,setout] [,outout]
sideout, setout, and outout can be set to 0 (default) or 1 to specify if pins defined in pinctrl should be initialised as inputs (0) or outputs (1)
MM.INFO(BOOT)
Tells you the reason for the last restart of the Pico
Returns:
Restart - the device has been restarted with CPU RESTART or an OPTION command
S/W Watchdog - the device has been restarted by a software watchdog timeout
H/W Watchdog - the device has been restarted by a hardware watchdog timeout
Firmware update - the device has been restarted following a firmware update
Power On - the device has been powered up
Reset Switch - the device has been restarted using the reset switch
Unknown code &Hn - unknown reason - please report the code and version RP2040/2350
LIST PINS - lists the current status of all pins on the processor
PIO code can now be inserted directly into Basic between a call to PIO ASSEMBLE and .end program. All PIO instructions are included as MMBasic commands including the 6 directives
Includes support for FT6336 capacitive touch chip
OPTION TOUCH FT6336 IRQpin, RESETpin [,BEEPpin] [,sensitivity]
sensitivity is a number between 0 and 255 - defaults to 50, lower is more sensitive.
SDA and SCK should be connected to valid I2C pins and set up with OPTION SYSTEM I2C
TOUCH function works as before + TOUCH(X2) and TOUCH(Y2) returns the position of a second touch location or -1 if no second location is touched.
LIST SYSTEM I2C
Produces a display showing the addresses of all I2C device connected to the SYSTEM I2C pins
New PIO functionality for RP2350A and RP2350B
Adds MOV PINDIRS,src as valid instruction
Adds support for 'prev' and 'next' for the IRQ command
New PIO functionality for RP2350B
PIO SET BASE pionum, n 'sets the base of logical PIO pins to 0 or 16 to allow pins GP30-47 to be used for PIO
Use GAMEPAD MONITOR before plugging in a gamepad and when plugged in it will show the before and after report with each change of buttons
Use GAMEPAD CONFIGURE vid,pid,i0,c0,i1,c1,i2,c2,i3,c3,i4,c4,i5,c5,i6,c6,i7,c7,i8,c8,i9,c9,i10,c10,i11,c11,i12,c12,i13,c13,i14,c14,i15,c15
to set up a gamepad that isn't supported before plugging it in.
All 34 parameters are mandatory.
New functionality from Geoff - with thanks
Now supporting BYVAL & BYREF. BYVAL & BYREF are prefixes that can be applied to parameters in the definition of a sub or function. BYVAL will force the interpreter to use the value of the supplied argument even if a variable is supplied. BYREF informs the interpreter that a variable is expected and if that is not supplied it will throw an error.
Additional parameter for OPTION LCDPANEL paralleldisplaytype (e.g. SSD1963_7[_16])
OPTION LCDPANEL display, orientation [,backlightpin] [,DCpin] [,NORESET] [,DB0pin]
The new parameter only applies to the RP2350B and allows the starting pin for the 8 or 16 data pins to be specified (defaults to GP0)
e.g. OPTION LCDPANEL SSD1963_4_16, LANDSCAPE,,,GP36,,GP2
This allows SSD and other parallel displays to be used on the new 64-pin DIL development board
Allows seek to increase file size on the A: drive
Adds support for additional gamepads
126MHz operation no longer supported for VGA versions - now defaults to 252MHz
HDMI VERSIONS
OPTION RESOLUTION 640/640,252000/720/800/848/1024/1280
RP2350 VGA VERSIONS
OPTION CPUSPEED 252000/315000/360000/378000 'NB: not available when widescreen mode enabled
OPTION WIDESCREEN 720/848/OFF
RP2040 VGA VERSIONS
OPTION CPUSPEED 252000/315000/378000 'NB: not available when widescreen mode enabled
OPTION WIDESCREEN 720/OFF
These commands between then allow
640x480 @ 75HZ - all versions
640x480 @ 60HZ - all versions
720x400 @ 60HZ - all versions (widescreen)
800x600 @ 56Hz - all RP2350 versions
848x480 @ 60Hz - all RP2350 versions (widescreen)
1024x768 @ 60HZ - HDMI versions
1280x720 @ 60Hz - HDMI versions (widescreen)
The actual CPU speeds used are:
372MHz 1280x720
315MHz 640x480 @ 75Hz
252MHz or 378MHz 640x480 @ 60Hz
324MHz 1024x768
360MHz 800x600
336MHz 848x480
283.2MHz 720x400