cpu/atmega_common: implement periph_timer_query_freqs

[maribu]

Contribution description

As the title says.

Testing procedure

Run the test provided by #16349.

Issues/PRs references

Depends on #16349 and includes the first commit of it.

[riot-ci]

Murdock results

✔️ PASSED

e78630f cpu/atmega_common: implement periph_timer_query_freqs

Success	Failures	Total	Runtime
8082	0	8082	09m:36s

Artifacts

• Documentation preview

[maribu]

make BOARD=arduino-uno -C tests/periph/timer flash test -j
make: Entering directory '/home/maribu/Repos/software/RIOT/master/tests/periph/timer'
Building application "tests_timer" for "arduino-uno" with MCU "atmega328p".

"make" -C /home/maribu/Repos/software/RIOT/master/boards/arduino-uno
"make" -C /home/maribu/Repos/software/RIOT/master/boards/common/init
"make" -C /home/maribu/Repos/software/RIOT/master/core
"make" -C /home/maribu/Repos/software/RIOT/master/core/lib
"make" -C /home/maribu/Repos/software/RIOT/master/cpu/atmega328p
"make" -C /home/maribu/Repos/software/RIOT/master/drivers
"make" -C /home/maribu/Repos/software/RIOT/master/sys
"make" -C /home/maribu/Repos/software/RIOT/master/boards/common/arduino-atmega
"make" -C /home/maribu/Repos/software/RIOT/master/cpu/atmega_common
"make" -C /home/maribu/Repos/software/RIOT/master/drivers/periph_common
"make" -C /home/maribu/Repos/software/RIOT/master/sys/auto_init
"make" -C /home/maribu/Repos/software/RIOT/master/sys/isrpipe
"make" -C /home/maribu/Repos/software/RIOT/master/boards/common/atmega
"make" -C /home/maribu/Repos/software/RIOT/master/sys/libc
"make" -C /home/maribu/Repos/software/RIOT/master/sys/malloc_thread_safe
"make" -C /home/maribu/Repos/software/RIOT/master/sys/pm_layered
"make" -C /home/maribu/Repos/software/RIOT/master/sys/preprocessor
"make" -C /home/maribu/Repos/software/RIOT/master/cpu/atmega_common/periph
"make" -C /home/maribu/Repos/software/RIOT/master/sys/stdio_uart
"make" -C /home/maribu/Repos/software/RIOT/master/sys/test_utils/interactive_sync
"make" -C /home/maribu/Repos/software/RIOT/master/cpu/avr8_common
"make" -C /home/maribu/Repos/software/RIOT/master/sys/test_utils/print_stack_usage
"make" -C /home/maribu/Repos/software/RIOT/master/sys/tiny_strerror
"make" -C /home/maribu/Repos/software/RIOT/master/sys/tsrb
"make" -C /home/maribu/Repos/software/RIOT/master/cpu/avr8_common/avr_libc_extra
"make" -C /home/maribu/Repos/software/RIOT/master/cpu/avr8_common/periph
   text	  data	   bss	   dec	   hex	filename
   9986	   218	   983	 11187	  2bb3	/home/maribu/Repos/software/RIOT/master/tests/periph/timer/bin/arduino-uno/tests_timer.elf
avrdude -c arduino -p m328p -P /dev/ttyACM1  -U flash:w:/home/maribu/Repos/software/RIOT/master/tests/periph/timer/bin/arduino-uno/tests_timer.hex
avrdude: AVR device initialized and ready to accept instructions
avrdude: device signature = 0x1e950f (probably m328p)
avrdude: Note: flash memory has been specified, an erase cycle will be performed.
         To disable this feature, specify the -D option.
avrdude: erasing chip

avrdude: processing -U flash:w:/home/maribu/Repos/software/RIOT/master/tests/periph/timer/bin/arduino-uno/tests_timer.hex:i
avrdude: reading input file /home/maribu/Repos/software/RIOT/master/tests/periph/timer/bin/arduino-uno/tests_timer.hex for flash
         with 10204 bytes in 1 section within [0, 0x27db]
         using 80 pages and 36 pad bytes
avrdude: writing 10204 bytes flash ...
Writing | ################################################## | 100% 1.82 s 
avrdude: 10204 bytes of flash written
avrdude: verifying flash memory against /home/maribu/Repos/software/RIOT/master/tests/periph/timer/bin/arduino-uno/tests_timer.hex
Reading | ################################################## | 100% 1.33 s 
avrdude: 10204 bytes of flash verified

avrdude done.  Thank you.

r
/home/maribu/Repos/software/RIOT/master/dist/tools/pyterm/pyterm -p "/dev/ttyACM1" -b "9600" --no-reconnect --noprefix --no-repeat-command-on-empty-line 
Connect to serial port /dev/ttyACM1
Welcome to pyterm!
Type '/exit' to exit.


Help: Press s to start test, r to print it is ready
READY
s
START
main(): This is RIOT! (Version: 2023.10-devel-690-ge7863-periph_timer_query_freq-atmega)

Test for peripheral TIMERs

Available timers: 1

TIMER 0
=======

  - supported frequencies:
    0: 16000000
    1: 2000000
    2: 250000
    ....
    4: 15625
  - Calling timer_init(0, 16000000)
    initialization successful
  - timer_stop(0): stopped
  - timer_set(0, 0, 14464)
    Successfully set timeout 14464 for channel 0
  - timer_set(0, 1, 28928)
    Successfully set timeout 28928 for channel 1
  - timer_start(0)
  - Results:
    - channel 0 fired at SW count      402      - init:      402
    - channel 1 fired at SW count      797      - diff:      395
  - Validating no spurious IRQs are triggered:
    OK (no spurious IRQs)
  - Calling timer_init(0, 2000000)
    initialization successful
  - timer_stop(0): stopped
  - timer_set(0, 0, 10000)
    Successfully set timeout 10000 for channel 0
  - timer_set(0, 1, 20000)
    Successfully set timeout 20000 for channel 1
  - timer_start(0)
  - Results:
    - channel 0 fired at SW count     2220      - init:     2220
    - channel 1 fired at SW count     4436      - diff:     2216
  - Validating no spurious IRQs are triggered:
    OK (no spurious IRQs)
  - Calling timer_init(0, 250000)
    initialization successful
  - timer_stop(0): stopped
  - timer_set(0, 0, 1250)
    Successfully set timeout 1250 for channel 0
  - timer_set(0, 1, 2500)
    Successfully set timeout 2500 for channel 1
  - timer_start(0)
  - Results:
    - channel 0 fired at SW count     2221      - init:     2221
    - channel 1 fired at SW count     4437      - diff:     2216
  - Validating no spurious IRQs are triggered:
    OK (no spurious IRQs)

TEST SUCCEEDED

[kfessel]

👍 saw @maribu testing these and he also provides test output for every one to see 👍

[maribu]

Thx :-)