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matherp
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Posted: 01:08am 16 Nov 2016

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It had to be done

Attached, with Geoff's approval, is a hex file for the Micromite code V5.2 to run on a PIC32MZ chip.
The PIC32MZ runs at 198MHz and has 512K RAM. It also has hardware floating point and 12-bit analog to digital convertors. The MZ doesn't need a VCAP just good decoupling at each power input. Early indications are that MMBasic runs more than twice as fast as on the MX470 as well as having lots of extra memory.

2016-11-16_110646_MicromiteExtremeV5.2b1X.zip

All 5.2 Micromite Plus functionality has been included (i.e.including SDcard, USB etc.) and has been tested at various stages of development but this is a first beta so......

The code has been developed on a PIC32MZ2048EFG064 (huge thanks to Kiiid for the development board) but should work on a PIC32MZ2048EFG100, PIC32MZ2048EFH064 and PIC32MZ2048EFH100

Next steps are to integrate any new 5.3 functionality and bug fixes. Then I'm going to look at converting all floating point operations to DOUBLE using the power of the hardware floating point. Also the chip has hardware random number generation which should be used. Finally, the chip is capable of running a VGA monitor like the Maximite but getting that running in a Harmony environment might be tricky

The crystal required is 12MHz

Pinout for the 64 pin chip is currently as follows but the allocation of special functions may change slightly in future

1 Analog/Digital/SSD1963-D5
2 Analog/Digital/SSD1963-D6
3 Analog/Digital/SSD1963-D7
4 Analog/Digital/SPI2-CLK
5 Analog/Digital/SPI2-OUT
6 Analog/Digital/SPI1-OUT
7 VSS
8 3.3V
9 MCLR/5V
10 Analog/Digital/PWM-1A
11 Analog/Digital/COM2-TX
12 Analog/Digital/PWM-2A
13 Analog/Digital/COM2-RX
14 Analog/Digital/KYBD-CLK ' Note: not 5V so use resistor
15 Analog/Digital/KYBD-DAT ' Note: not 5V so use resistor
16 Analog/Digital/COM3-TX
17 Analog/Digital/COM3-RX
18 Analog/Digital
19 AVDD
20 AVSS
21 Analog/Digital/COM3-RX
22 Analog/Digital
23 Analog/Digital/COUNT
24 Analog/Digital/SSD1963-WR
25 VSS
26 VDD
27 Analog/Digital/SSD1963-RS
28 Analog/Digital/SSD1963-RESET
29 Analog/Digital/PWM-1B
30 Analog/Digital/PWM-2B
31 XTAL: 12MHz
32 XTAL: 12MHz
33 USB-VBUS
34 USB-VUSB
35 VSS
36 USB-D-
37 USB-D+
38 Digital/COM1-EN
39 VDD
40 VSS
41 DIGITAL/5V/COM1-RX
42 DIGITAL/5V/COM1-TX
43 DIGITAL/5V/I2C-SDA
44 DIGITAL/5V/I2C-SCK
45 DIGITAL/5V
46 DIGITAL/5V/COUNT
47 DIGITAL/COUNT/IR
48 DIGITAL/PWM-1C
49 DIGITAL/5V/SPI1-CLK
50 DIGITAL/5V/SPI1-IN
51 DIGITAL/5V/SPI2-IN
52 DIGITAL/5V/COUNT
53 DIGITAL/5V
54 VDD
55 VSS
56 5V/Console-TX/COM4-TX
57 5V/Console-RX/COM4-RX
58 DIGITAL/5V/SSD1963-D0
59 VSS
60 VDD
61 DIGITAL/5V/SSD1963-D1
62 DIGITAL/5V/SSD1963-D2
63 DIGITAL/5V/SSD1963-D3
64 DIGITAL/5V/SSD1963-D4

Edited by matherp 2016-11-17

sagt3k

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Posted: 01:21am 16 Nov 2016

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Great .... compliments

WhiteWizzard
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Posted: 01:54am 16 Nov 2016

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This is brilliant work guys

(even though you've now ruined my kids Christmas!!)

A few early/immediate questions:

1> Does it still run a Console connection too on COM1 (Tx and Rx)?

2> What kind of current (mA's) does this beast pull? (assume nothing attached so comparisons can be made with the figures in Geoff's manuals)

3> Could you ping me a link to a board / circuit if you have one available

4> Anything not working that 'should be' from the normal v5.2?

5> IF you get the VGA resolved, would it just display the 'console output' OR would it be possible to display all MMBASIC graphics/GUI stuff (i.e. duplicate the contents of a SSD TFT)?

Can't wait to try this . . . . .

WW

matherp
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Posted: 02:00am 16 Nov 2016

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Quote 1> Does it still run a Console connection too on COM1 (Tx and Rx)?

Yes, COM4 same as MX470, see pinout for connections

2> What kind of current (mA's) does this beast pull? (assume nothing attached so comparisons can be made with the figures in Geoff's manuals)

Just measured at 3.3V 135mA = c0.5W, no peripherals

Quote 3> Could you ping me a link to a board / circuit if you have one available

This one should work - not tested

Quote 4> Anything not working that 'should be' from the normal v5.2?

Probably, but not by design

Quote 5> IF you get the VGA resolved, would it just display the 'console output' OR would it be possible to display all MMBASIC graphics/GUI stuff (i.e. duplicate the contents of a SSD TFT)?

TBDEdited by matherp 2016-11-17

sagt3k

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Posted: 02:08am 16 Nov 2016

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Hi matherp
I want create a PCB asap ...

Can you public a schematic with essential components?
Thanks
Saht3k

MicroBlocks

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Posted: 02:12am 16 Nov 2016

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Wouldn't supporting VGA not eat up all(most) serial/i2c/spi ports and lots of RAM memory?
My vote would be to at least make it completely optional as the solutions with LCD screens is already working good.

Microblocks. Build with logic.

matherp
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Posted: 02:27am 16 Nov 2016

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Quote Can you publish a schematic with essential components?

These is no schematic needed. Just put 3.3V on all VDD pins including AVDD and pin 34(USB-VUSB). Connect 0V on all VSS pins including AVSS. Use lots of decoupling for each pin.

Pull MCLR high via a 10K resistor.

Use a 12MHz external oscillator (IMPORTANT not a crystal) connected to pin 31, leave pin 32 unconnected.

Most connections are as per the MX470. i.e. SPI2 used for SDcard, Touch and ILI9341 (NOTE pin 51 is used for SPI2-IN and NOT pin-47). Pinout for SSD1963 as per the pinout above

USB, if you want to use it, connect incoming 5V to pin 33, D+ and D- as per pinout, GND connected, incoming USBID not connected

Quote My vote would be to at least make it completely optional as the solutions with LCD screens is already working good.

It can be turned on and off on the Maximite. Turning it off frees the memory. The pins on the Micromite would only be allocated if turned onEdited by matherp 2016-11-17

kiiid

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Posted: 02:30am 16 Nov 2016

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Good one Peter

I have a MZEF64 board (new revision) currently in manufacturing. Here is what it looks like (those grey things are actually headers, don't mind the poor render). And the schematic, which is based on the original MZEF64 which you have.
A full port of MMBasic NOT based on Harmony but on PLIB is done (credit to Spas for the huge volume of work on that port) and will be out to Geoff for approval in the next day or two.

2016-11-16_122945_MZEF64.pdf

http://rittle.org

--------------

WhiteWizzard
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Posted: 02:35am 16 Nov 2016

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Peter,

Thanks for your responses, and the link. (I totally missed the COM4 pinout stating 'console'

)

Would you consider using all 16 SSD data signals on this beast? I seem to remember you commenting on only half the data lines being used in some previous post giving some 'limitation'. So raises the question that if you were to use all 16, would it speed up (or slow down!) the screen 'drawing' OR would it simply just give more colours? Or possibly this is not a consideration due to integrating with existing MMBASIC.

Will try and make a quick PCB here assuming there are no gotcha's. Thinking of just expanding all pins out to four 16 pin headers with decouplers local to power pins, crystal + caps, then jumping appropriate I/O pins to a TFT and Grogster's SD add-on PCB.

WhiteWizzard
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Posted: 02:36am 16 Nov 2016

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matherp said

Quote Use a 12MHz external oscillator (IMPORTANT not a crystal) connected to pin 31, leave pin 32 unconnected.

Thats good to know!

sagt3k

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Posted: 02:38am 16 Nov 2016

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Thank very interesting.
Thanks
Sagt3k

WhiteWizzard
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Posted: 02:41am 16 Nov 2016

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Would the excellent features of the PIC16F1455 work with this too for updates?

disco4now

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Posted: 02:45am 16 Nov 2016

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Hi Peter,
I though you had been a bit quiet. Great work!

What is the situation with CFunctions with this.

If you order a snapic board would you need to ask for the 12MHz crystal in lieu of 24MHz.

Regards
Gerry

Latest F4 Latest H7 FotS

sagt3k

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Posted: 02:51am 16 Nov 2016

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Hi to eserybody
Now it might be interesting integrate code for the most common modules as:
- wifi esp8266
- mpu6050
- bmp/e280
or if possible to load/integrate subs from uSD to append in the editor etc... I suppose to do a porting library from arduino.... create .bas in the uSD and load/unload with #include etc by ibtegrated editor...
Etc?
Thanks

isochronic
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Posted: 03:20am 16 Nov 2016

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Welcome to the MZ zeitgeist ! I am getting similar speed increases,
160 k lines /sec for simple loops ( carefully optimised though

).

Are you using Harmony or a bespoke PLIB?

I have revised my 100 pin MZ pcb and have had some made but I haven't
built one up yet...I could make the gerbers available I guess. It would
be good to maintain some compatibility .

Microchip also have some cheap dev boards one for MZ -

dev board

there is also a cheap 470 one.

matherp
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Posted: 03:58am 16 Nov 2016

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Quote Would you consider using all 16 SSD data signals on this beast? I seem to remember you commenting on only half the data lines being used in some previous post giving some 'limitation'. So raises the question that if you were to use all 16, would it speed up (or slow down!) the screen 'drawing' OR would it simply just give more colours? Or possibly this is not a consideration due to integrating with existing MMBASIC.

It could be done but not on the 64-pin chip so I think the Loadable driver approach is the best way of getting the extra speed on a 100-pin chip.

Quote Would the excellent features of the PIC16F1455 work with this too for updates?

As a USB/UART - yes; as a programmer - not yet tested

Quote What is the situation with CFunctions with this.

They work based on limited testing. In theory they should be able to do floating point calcs direct but again not tested

Quote Now it might be interesting integrate code for the most common modules as:
- wifi esp8266
- mpu6050
- bmp/e280

I don't understand this requirement. These all work perfectly in Basic what does including them in the firmware achieve except increasing complexity and adding to all regression testing?

Quote Are you using Harmony or a bespoke PLIB?

Harmony just for chip initialisation and USB "myplib" for everything else

Everyone, please note my statement in the original post if you are designing a PCB

Quote Pinout for the 64 pin chip is currently as follows but the allocation of special functions may change slightly in future

Edited by matherp 2016-11-17

panky

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Posted: 11:54am 16 Nov 2016

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Great work Peter,

Does your implimentation use a bootloader like the Maximite or is a PicKit 3 needed to load EMMBasic?

Thanks for your great work and contributions,
Doug.

PS. Peter, do you have any plans to modify/update your backpack board you designed? That is a terrific little board especially for testing or just playing as it has connectors and support for all the TFTs from 2.4" to 8"

Doug.Edited by panky 2016-11-17

... almost all of the Maximites, the MicromMites, the MM Extremes, the ArmMites, the PicoMite and loving it!

Bill7300
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Posted: 12:02pm 16 Nov 2016

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Wow!
Waking up to see what is new in the Micromite world has become a daily treat for me. You blokes just never cease to amaze me, especially you Peter. Many many thanks.

Bill

JohnL
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Posted: 12:22pm 16 Nov 2016

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$32 AU for the 100 pin microcontroller chip alone.

http://au.element14.com/microchip/pic32mz2048efg100-i-pt/mcu-32bit-pic32mz-200mhz-tqfp/dp/2500473?ost=PIC32MZ2048EFG100& selectedCategoryId=&categoryId=800000000185&searchView=table&iscrfnonsku=false

Better quality external crystal oscillator will set you back about another AU$5.00.
+ PCB + tons of decoupling caps and you still have to build it?

All of this to run "dressed up" old quirky Basic language in 2016?

If you really need interactive scripting language on the powerful microcontroller why not use much easier and exponentially more powerful up to date language like Python, or anything else (C , javascript, etc.) on SOC boards with proper multitasking operating system , built in WIFI, tons more memory and all other bells and whistles for less than $10?

only one example.

https://getchip.com/pages/chip

Even full genuine Raspberry Pi and Beaglebones will cost less than this.

[flame suit on]
I guess hard core MMbasic fanboys will justify things differently.

Edited by JohnL 2016-11-17

WhiteWizzard
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Posted: 01:11pm 16 Nov 2016

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Blimey JohnL - I recommend you change your component supplier if they're wanting to charge that much. Can get two PICs + oscillators + all decoupling caps for less than that price! Did I mention thats with them being delivered free, and within 24hours!

My justification for wanting to use 'quirky Basic in 2016' is real simple: 'ease-of-use' (something systems people repeatedly like to overlook!)

I could go on but . . . .

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