ESP32_C3： timer_group: timer_init(271): HW TIMER NUM ERROR
from machine import*
tim = Timer(-1)
tim.init(period=1000,callback = lambda t:print('rtos'))
E (6078630) timer_group: timer_init(271): HW TIMER NUM ERROR
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
OSError: (-258, 'ESP_ERR_INVALID_ARG')
I found out that virtual timer is not available in ESP32_C3 chip.
ports/stm32/timer.c: Add support for STM32H5 Timer 1.
Summary
The STM32H5 build was lacking support for timer 1 (TIM1). The micro has hardware support for Timer 1 but MicroPython wasn't correctly configured to use it. Instead, when trying to construct the timer, a ValueError would occur:
>>> from pyb import Timer
>>> Timer(1)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ValueError: Timer(1) doesn't exist
After integrating this PR:
>>> from pyb import Timer
>>> Timer(1)
Timer(1)
Testing
Tested PWM using Timer 1 on the Nucleo H563ZI.
All Timers appear to be instantiated correctly now:
=== from pyb import Timer
=== timers = []
=== for x in range(24):
=== try:
=== timers.append(Timer(x))
=== except ValueError as e:
=== print(e)
===
=== print(timers)
===
Timer(0) doesn't exist
Timer(9) doesn't exist
Timer(10) doesn't exist
Timer(11) doesn't exist
Timer(18) doesn't exist
Timer(19) doesn't exist
Timer(20) doesn't exist
Timer(21) doesn't exist
Timer(22) doesn't exist
Timer(23) doesn't exist
[Timer(1), Timer(2), Timer(3), Timer(4), Timer(5), Timer(6), Timer(7), Timer(8), Timer(12), Timer(13), Timer(14), Timer(15), Timer(16), Timer(17)]
Extra detail
The Datasheet's (DS14151 or DS14258 depending on the specific H5) show TIM1 as a 16bit advanced timer: