MicroPython Forum (Archive)

Hi guys, trying to convert an integer to an hex, and put it into a bytearray, inside an interrupt handler, but I obtain a memory error. The callback is triggered by an external rising interrupt. Any experience about that? import ... micropython.alloc_emergency_exception_buf(100) count = 0 ct = bytea...

I'm thinking to switch from FAT to LittleFS, after experiencing that FAT significantly slows down after a while on my SDCard. My application stores a file every 15.8 secs on SDcard, and after a while I guess that FAT32 fragmentation affect the storage velocity. I would like to know if LittleFS can o...

@loboris, can you confirm that your micropython version works properly with pycom W01 oem module?
Did you try also the to use the extended RAM, external antenna, usb uploading using 'ampy' and the uasyncio library?

Regards
RM

I'm hacking with non blocking dma functionalities through "stm" module and I need to define, from python, an interrupt handler triggering a specific dma interrupt.
How can I do?

Hi guys, I'm using a custom board with an SDcard connected to a STM32F439 through SDIO port. The SDcard is automatically recognized as mass device and everything seems to be ok but I'm noticing that writing on the SD is really slow: I have measured 10KB/sec in average on a CLASS 10 SD card. I'm usin...

Hi guys,
I would like to share the first release of my FSMC driver for STM32F439.
It's just a piece of working code but maybe could be useful for someone.

Github repo:
https://github.com/formica-multiuso/mic ... -fsmc-sram

Regards
Roberto

Ok, I'm trying to follows your hints. I didn't test the code enough but this is my first try: [code] import stm #### GPIO INIT ### ### GPIOx_MODER INIT - Offset: 0x00 ##### stm.mem32[stm.GPIOD + 0x00] |= 0xAAAA0A0A stm.mem32[stm.GPIOE + 0x00] |= 0xAAAA8A8A stm.mem32[stm.GPIOF + 0x00] |= 0xAA000AAA s...

Hi all, I'm using micropython on a custom board with STM32F439ZIT6 and an external SRAM connected to the FMC port (Flexible Memory Controller). I guess that there is no micropython module to use it. So, I'm considering two alternatives: 1. Writing a module upon the Cubo STMHAL library, exporting the...