MicroPython Forum (Archive)

I have a STM32F411 board and when I try to use the I2C bus master is all ok: ------- from machine import I2C i2c = I2C(1) i2c.scan() -->Ok [25,30][i.e. address of accelerometer, address of magnetometer] i2c.writeto_mem(25,32,b'\x77') i2c.writeto_mem(25,35,b'\x08') i2c.readfrom_mem(25,40,1) i2c.readf...

Hi to all. I'm trying to development a simple lsm303dhlc accelerometer driver using the I2C class already present in Micropython ( I have a STM32F411 Discovery board and the lsm303dhlc accelerometer is hard linked to the PB6(scl) and PB9(sda) board pin). Scenario ( about use a I2C class in my new ac...

Thank you thank you very much Jimmo !
It works !

( I eliminated in mine [project/modules/example/micropython.mk] file the
added line ( USERMOD_DIR='the path of my modules/example directory ' )).

I have been trying to fix this :-( ( I'm sorry if I ask you any more questions ) I would like to ask you: Do you know where/when in the [micropython/ports/stm32/]Makefile (a) it's called/included [myproject/modules/example/]micropython.mk (b) it's called the linker to 'link' the file example.o (c) w...

Thank you very much stijn for your suggestion. This is what I obtain when compile the program ( in the second line there is the include) : -----------------------------------------Compilation -------------------------------------------------------- $ make BOARD=STM32F411DISC USER_C_MODULES=../../../...

Hi to all. I'm trying to learn how to use extenal C modules in MicroPython. I have read and implemented the example external C module. All almost ok. I prepared the same directoy structure, I copied from the web page the 'example.c' and 'micropython.mk' in my example.c and micropython.mk. I modified...

Hi Jimmo, I solved the problem by implementing the calls in syscall.c : starting the program ( in the main.c without FreeRTOS task ) everything works. As a next step I have prepared two very simple FreeRTOS tasks. /*declaration*/ void vTaskAsSimpleAsPossible(void*); void vTaskMP(void*); /*creation *...

Jimmo, thank you very much !!! I compiled the static library (libmicropython.a). I created a small project with STM32CubeIDE with FreeRTOS and libmicropython. These are the lines in the main.c: ( for the moment I don't use any FreeRTOS task ) ... ... ... mp_stack_set_limit(40000 * (BYTES_PER_WORD / ...

Hi Jimmo, I downloaded your library (libmicropython) from your branch and compiled. I prepared a small project (a blink project with FreeRTOS on a STM32 simple mono cpu STM32F411 board) and tried to link your library but I get the error: "libmicropython.a: error adding symbols: file format not recog...

Hi everyone.
I apologize, for sure this thing has already been asked but not for my inability I have not found the right posts.
How do you run MicroPython inside a FreeRtos task?
I would like to try to make a FreeRtos application that has only two tasks, one of which is MicroPython.