MicroPython Forum (Archive)

jimmo wrote: ↑

Mon Jul 11, 2022 11:52 am

Ohh... wait... are you trying to use a cross-compiled main_v16.mpy as your main.py? I think pyb.main has to be a .py file. You can only load .mpy via import.

You are right. I`m trying to start .mpy file. It`s not clear in docs that pyb.main() can only starts .py files.

Good day! I`m trying to start the program using function pyb.main(bootFileName) in the boot.py . But I get an error: 13:50:57.924 -> Traceback (most recent call last): 13:50:57.924 -> File "main_v16.mpy", line 1 13:50:57.924 -> SyntaxError: invalid syntax It is strange because if I use import bootFi...

I have faced this error too. I`m trying to set timer 4200000 ms (70 minutes), but it happens almost immediately after about 256 ms. As a try I changed the period to 42000 ms and I got proper behavior of the timer. What the reason of this malfunction?
I use STM32f411 plate.

There is a line like this in my settings: As I understand it, it includes support for USB. But the pins used are not listed. Maybe they are listed in another firmware file?

Good day! I am doing a project on the STM32f411 board. I check the code errors through a computer via a USB cable and a serial monitor. As development progresses, so does the need for pins. Do I understand correctly that if I connect the board to the computer via USB, then I can no longer use some p...

I added a timer to the program, but I can't figure out one thing. Set the timer to fire every 1 second. Now the timer will perform a certain task. But what if the duration of the task is more than 1 second? It turns out that the timer will work again and interrupt the execution of the previous task ...

Good day! On my board I configured an irq interrupt button. I put the board into a light sleep mode. When a button is pressed during sleep, an interrupt and its associated function are triggered. And after activating waking up timer, another function is triggered. Here's my example: import machine, ...

I`m using STM32f411 board. Linux Mint20. I write a program and test it on the board, output the test data to a serial monitor. My program periodically enters the board into a sleep state (light sleep), while the USB connection is terminated. After waking up, the connection is not restored automatica...

davef wrote: ↑

Fri Jun 04, 2021 6:10 am

What hardware are you running on?

ESP8266 virtual timers
ESP32 hardware timers

I'm sorry, I forgot to specify my equipment. I am using stm32f411 board.

Good day! I want to use timers in my program to periodically execute a part of the code, without referring to any pins. According to the documentation, to activate the timer, you need to write the following line, which usually includes the identifier (built-in number) of the timer. machine.Timer(id,...