Search found 17 matches

by RealSparky
Sat Apr 10, 2021 2:31 am
Forum: MicroPython pyboard
Topic: Help possibly fixing my board?
Replies: 1
Views: 905

Re: Help possibly fixing my board?

Ouch! but maybe, depending how much effort you want to invest, it can be fixed. One of the ICs on the board took the brunt of the overvoltage and fused internally. If you connect an external power supply set for 3.3 volts directly to the 3.3v bus and progressively turn up the current limit towards 1...
by RealSparky
Sat Apr 10, 2021 1:34 am
Forum: Development of MicroPython
Topic: STM32G474xx on NUCLEO-G474RE
Replies: 21
Views: 5138

Re: STM32G474xx on NUCLEO-G474RE

VCP update with STLINKV3-mini: On Mar 29 I was having an issue with the VCP on my custom PCBA. I said, 'BTW, there is a small glitch, to use the VCP at the moment. You need to start the debugger to initialized the STLINK-V3MODS before the VCP works." On my board the PB8-BOOT0 pin is used for FDCAN_R...
by RealSparky
Fri Apr 02, 2021 5:33 pm
Forum: Development of MicroPython
Topic: STM32G474xx on NUCLEO-G474RE
Replies: 21
Views: 5138

Re: STM32G474xx on NUCLEO-G474RE

RE: uasyncio is a BEAUTIFUL thing Just update the Google share drive folder with an updated version for the G474. https://drive.google.com/drive/folders/1_UrhLU6K3qwhvk_5nDJ1lY0xFygI5fqZ?usp=sharing This version increased the storage FS to 96K, has SPI3 dma working, asyncio integrated, LPUART REPL a...
by RealSparky
Mon Mar 29, 2021 7:39 pm
Forum: Development of MicroPython
Topic: STM32G474xx on NUCLEO-G474RE
Replies: 21
Views: 5138

Re: STM32G474xx on NUCLEO-G474RE

My applications for the G4xx are all embedded so I do not need a USB connection. I will be using the FDCAN bus for my COMs. I do not know much about your G4xx project but suspect the USB is not your main COM. You might consider having a socket on your low-cost board to plug-in a STLINK-V3MODS (U$D 8...
by RealSparky
Fri Mar 26, 2021 7:19 pm
Forum: Development of MicroPython
Topic: STM32G474xx on NUCLEO-G474RE
Replies: 21
Views: 5138

Re: STM32G474xx on NUCLEO-G474RE

Thanks, HGrobben For your ST7789 Github link. I have updating the MicroPython scripted ST7735 interface on my TODO list. I think Guy wanted to keep the concept simple to understand by using single pix writes rather than a window write approach. Your ST7789 'C' approach with window writes is really t...
by RealSparky
Thu Mar 25, 2021 7:58 pm
Forum: Development of MicroPython
Topic: STM32G474xx on NUCLEO-G474RE
Replies: 21
Views: 5138

Re: STM32G474xx on NUCLEO-G474RE

RE: Update on AEMICS build I have updated my shared google drive with a few minor fixes to the initial AEMICs shared release. Now we have the LPUART1 for REPL and has LittleFS integrated in a more stable fashion, ADCs are working as well as the HRTIM module g4ex and ST7735 LCD. https://drive.google....
by RealSparky
Sat Mar 20, 2021 5:45 pm
Forum: Development of MicroPython
Topic: STM32G474xx on NUCLEO-G474RE
Replies: 21
Views: 5138

Re: STM32G474xx on NUCLEO-G474RE

RE: LPUART1 on STM32G474 w/ AEMICS build I was is the process of adding LPUART1 to my G474 project and to my amazement found another G474 port here: https://github.com/AEMICS/micropython/tree/AEMICS-boards There is a note in the mpconfigboard.h: #define MICROPY_HW_UART_REPL (PYB_LPUART_1) // not wor...
by RealSparky
Sun Mar 14, 2021 10:40 pm
Forum: Development of MicroPython
Topic: STM32G474xx on NUCLEO-G474RE
Replies: 21
Views: 5138

Re: STM32G474xx on NUCLEO-G474RE

RE: New modg4ex.c G4 Expansion module for HR High Resolution (16bit) PWM I have completed the initial testing with the stm32G4xx expansion module. My shared code is still a 7z packaged as a Embitz project, sorry about that. The MicroPython firmware.hex is in the stm build folder so no need to compil...
by RealSparky
Tue Mar 02, 2021 10:01 pm
Forum: Development of MicroPython
Topic: STM32G474xx on NUCLEO-G474RE
Replies: 21
Views: 5138

Re: STM32G474xx on NUCLEO-G474RE

Reconsidering External Module approach: Today I have realized maybe extending the MicroPython Timer module to include HRTIM (high resolution) might not be the best approach. Mostly, because the HRTIM only exists in a very limited number of STmicro controllers. In the G4xx series it is only available...
by RealSparky
Mon Feb 22, 2021 8:35 pm
Forum: Development of MicroPython
Topic: STM32G474xx on NUCLEO-G474RE
Replies: 21
Views: 5138

Re: STM32G474xx on NUCLEO-G474RE

Status update: Sorry about the delay on posting my STM32G4xx MicroPython port source. The multi-phase HRTIM 'C' code is working now and being merged into my G4xx uPy port. I want to share my very first port done last year just so you have something to tinker with. https://drive.google.com/drive/fold...