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Merge #19752
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19752: cpu/atmega_common: checking features instead of CPU models r=maribu a=hugueslarrive

### Contribution description
Splitted from:
- #19740

### Testing procedure
Tested on atmega8 with:
- #19755

This one probably need to be tested on others cpu.
### Tests on 1284p:
#### tests/periph/adc
```
tests/periph/adc$ BOARD=atmega1284p make -j64 clean all | grep '^  ' && BOARD=atmega1284p AVRDUDE_PROGRAMMER='usbasp -F' make flash 2>&1 | grep -- 'of flash' && BOARD=atmega1284p PORT=/dev/ttyACM0 make term
   text	   data	    bss	    dec	    hex	filename
  10712	    304	   1021	  12037	   2f05	/home/hugues/github/cpu_atmega_common/RIOT/tests/periph/adc/bin/atmega1284p/tests_adc.elf
avrdude: 11016 bytes of flash written
avrdude: 11016 bytes of flash verified
/home/hugues/github/cpu_atmega_common/RIOT/dist/tools/pyterm/pyterm -p "/dev/ttyACM0" -b "9600"  
Twisted not available, please install it if you want to use pyterm's JSON capabilities
2023-06-22 18:44:54,846 # Connect to serial port /dev/ttyACM0
Welcome to pyterm!
Type '/exit' to exit.
2023-06-22 18:44:55,848 # 

2023-06-22 18:44:55,848 # main(): This is RIOT! (Version: 2020.07-devel-15351-gc5f75c-cpu/atmega_common)
2023-06-22 18:44:55,848 # 
2023-06-22 18:44:55,849 # RIOT ADC peripheral driver test
2023-06-22 18:44:55,849 # 
2023-06-22 18:44:55,850 # This test will sample all available ADC lines once every 100ms with
2023-06-22 18:44:55,850 # a 10-bit resolution and print the sampled results to STDIO
2023-06-22 18:44:55,850 # 
2023-06-22 18:44:55,850 # 
2023-06-22 18:44:55,851 # Successfully initialized ADC_LINE(0)
2023-06-22 18:44:55,851 # Successfully initialized ADC_LINE(1)
2023-06-22 18:44:55,851 # Successfully initialized ADC_LINE(2)
2023-06-22 18:44:55,852 # Successfully initialized ADC_LINE(3)
2023-06-22 18:44:55,852 # Successfully initialized ADC_LINE(4)
2023-06-22 18:44:55,852 # Successfully initialized ADC_LINE(5)
2023-06-22 18:44:55,853 # Successfully initialized ADC_LINE(6)
2023-06-22 18:44:55,853 # Successfully initialized ADC_LINE(7)
2023-06-22 18:44:55,853 # ADC_LINE(0): 796
2023-06-22 18:44:55,854 # ADC_LINE(1): 599
2023-06-22 18:44:55,854 # ADC_LINE(2): 522
2023-06-22 18:44:55,854 # ADC_LINE(3): 485
2023-06-22 18:44:55,854 # ADC_LINE(4): 466
2023-06-22 18:44:55,854 # ADC_LINE(5): 466
2023-06-22 18:44:55,854 # ADC_LINE(6): 478
2023-06-22 18:44:55,855 # ADC_LINE(7): 501
2023-06-22 18:44:55,855 #  Exiting Pyterm
make: *** [/home/hugues/github/cpu_atmega_common/RIOT/tests/periph/adc/../../../Makefile.include:879: term] Interrompre
```
#### tests/periph/gpio
```
tests/periph/gpio$ BOARD=atmega1284p make -j64 clean all | grep '^  ' && BOARD=atmega1284p AVRDUDE_PROGRAMMER='usbasp -F' make flash 2>&1 | grep -- 'of flash' && BOARD=atmega1284p PORT=/dev/ttyACM0 make term
   text	   data	    bss	    dec	    hex	filename
  17828	   2112	   1095	  21035	   522b	/home/hugues/github/cpu_atmega_common/RIOT/tests/periph/gpio/bin/atmega1284p/tests_gpio.elf
avrdude: 19940 bytes of flash written
avrdude: 19940 bytes of flash verified
/home/hugues/github/cpu_atmega_common/RIOT/dist/tools/pyterm/pyterm -p "/dev/ttyACM0" -b "9600"  
Twisted not available, please install it if you want to use pyterm's JSON capabilities
2023-06-22 18:46:50,726 # Connect to serial port /dev/ttyACM0
Welcome to pyterm!
Type '/exit' to exit.
2023-06-22 18:46:51,734 # This is RIOT! (Version: 2020.07-devel-15351-gc5f75c-cpu/atmega_common)
2023-06-22 18:46:51,734 # GPIO peripheral driver test
2023-06-22 18:46:51,734 # 
2023-06-22 18:46:51,735 # In this test, pins are specified by integer port and pin numbers.
2023-06-22 18:46:51,735 # So if your platform has a pin PA01, it will be port=0 and pin=1,
2023-06-22 18:46:51,736 # PC14 would be port=2 and pin=14 etc.
2023-06-22 18:46:51,736 # 
2023-06-22 18:46:51,736 # NOTE: make sure the values you use exist on your platform! The
2023-06-22 18:46:51,738 #       behavior for not existing ports/pins is not defined!
init_out 1 5
2023-06-22 18:47:50,380 # init_out 1 5
toggle 1 5
2023-06-22 18:48:09,425 # toggle 1 5
> toggle 1 5
2023-06-22 18:48:12,477 # toggle 1 5
> 2023-06-22 18:48:15,013 # Exiting Pyterm
```
#### tests/periph/i2c
```
tests/periph/i2c$ BOARD=atmega1284p make -j64 clean all | grep '^  ' && BOARD=atmega1284p AVRDUDE_PROGRAMMER='usbasp -F' make flash 2>&1 | grep -- 'of flash' && BOARD=atmega1284p PORT=/dev/ttyACM0 make term
   text	   data	    bss	    dec	    hex	filename
  18634	   1288	   1215	  21137	   5291	/home/hugues/github/cpu_atmega_common/RIOT/tests/periph/i2c/bin/atmega1284p/tests_i2c.elf
avrdude: 19922 bytes of flash written
avrdude: 19922 bytes of flash verified
/home/hugues/github/cpu_atmega_common/RIOT/dist/tools/pyterm/pyterm -p "/dev/ttyACM0" -b "9600"  
Twisted not available, please install it if you want to use pyterm's JSON capabilities
2023-06-22 18:50:37,434 # Connect to serial port /dev/ttyACM0
Welcome to pyterm!
Type '/exit' to exit.
2023-06-22 18:50:38,437 # 
2023-06-22 18:50:38,438 # main(): This is RIOT! (Version: 2020.07-devel-15351-gc5f75c-cpu/atmega_common)
2023-06-22 18:50:38,438 # Start: Test for the low-level I2C driver
> i2c_scan 0
2023-06-22 18:51:37,661 # i2c_scan 0
2023-06-22 18:51:37,687 # Scanning I2C device 0...
2023-06-22 18:51:37,765 # addr not ack'ed = "-", addr ack'ed = "X", addr reserved = "R", error = "E"
2023-06-22 18:51:37,804 #      0 1 2 3 4 5 6 7 8 9 a b c d e f
2023-06-22 18:51:37,842 # 0x00 R R R R R R R R R R R R R R - -
2023-06-22 18:51:37,881 # 0x10 - - - - - - - - - - - - - - - -
2023-06-22 18:51:37,919 # 0x20 - - - - - - - - - - - - - - - -
2023-06-22 18:51:37,958 # 0x30 - - - - - - - - - - - - - - - -
2023-06-22 18:51:37,996 # 0x40 - - - - - - - - - - - - - - - -
2023-06-22 18:51:38,035 # 0x50 - - - - - - - - - - - - - - - -
2023-06-22 18:51:38,073 # 0x60 - - - - - - - - - - - - - - - -
2023-06-22 18:51:38,112 # 0x70 - - - - - - - - R R R R R R R R
> 2023-06-22 18:52:54,462 # Exiting Pyterm
```
#### tests/periph/pwm
```
tests/periph/pwm$ BOARD=atmega1284p make -j64 clean all | grep '^  ' && BOARD=atmega1284p AVRDUDE_PROGRAMMER='usbasp -F' make flash 2>&1 | grep -- 'of flash' && BOARD=atmega1284p PORT=/dev/ttyACM0 make term
   text	   data	    bss	    dec	    hex	filename
  15382	    896	   1093	  17371	   43db	/home/hugues/github/cpu_atmega_common/RIOT/tests/periph/pwm/bin/atmega1284p/tests_pwm.elf
avrdude: 16278 bytes of flash written
avrdude: 16278 bytes of flash verified
/home/hugues/github/cpu_atmega_common/RIOT/dist/tools/pyterm/pyterm -p "/dev/ttyACM0" -b "9600"  
Twisted not available, please install it if you want to use pyterm's JSON capabilities
2023-06-22 18:54:32,308 # Connect to serial port /dev/ttyACM0
Welcome to pyterm!
Type '/exit' to exit.
2023-06-22 18:54:33,310 # 
2023-06-22 18:54:33,312 # main(): This is RIOT! (Version: 2020.07-devel-15351-gc5f75c-cpu/atmega_common)
2023-06-22 18:54:33,312 # PWM peripheral driver test
2023-06-22 18:54:33,313 # 
> osci
2023-06-22 18:54:39,105 # osci
2023-06-22 18:54:39,106 # 
2023-06-22 18:54:39,121 # RIOT PWM test
2023-06-22 18:54:39,177 # Connect an LED or scope to PWM pins to see something.
2023-06-22 18:54:39,178 # 
2023-06-22 18:54:39,216 # Available PWM device between 0 and 1
2023-06-22 18:54:39,244 # Initialized PWM_0 @ 488Hz.
2023-06-22 18:54:39,273 # Initialized PWM_1 @ 976Hz.
2023-06-22 18:54:39,274 # 
2023-06-22 18:54:39,313 # Letting the PWM pins oscillate now...
2023-06-22 18:54:45,655 # Exiting Pyterm
```
#### tests/periph/spi
```
tests/periph/spi$ BOARD=atmega1284p make -j64 clean all | grep '^  ' && BOARD=atmega1284p AVRDUDE_PROGRAMMER='usbasp -F' make flash 2>&1 | grep -- 'of flash' && BOARD=atmega1284p PORT=/dev/ttyACM0 make term
   text	   data	    bss	    dec	    hex	filename
  19240	   1402	   2317	  22959	   59af	/home/hugues/github/cpu_atmega_common/RIOT/tests/periph/spi/bin/atmega1284p/tests_spi.elf
avrdude: 20642 bytes of flash written
avrdude: 20642 bytes of flash verified
/home/hugues/github/cpu_atmega_common/RIOT/dist/tools/pyterm/pyterm -p "/dev/ttyACM0" -b "9600"  
Twisted not available, please install it if you want to use pyterm's JSON capabilities
2023-06-22 18:58:12,394 # Connect to serial port /dev/ttyACM0
Welcome to pyterm!
Type '/exit' to exit.
2023-06-22 18:58:13,396 # 
2023-06-22 18:58:13,398 # main(): This is RIOT! (Version: 2020.07-devel-15351-gc5f75c-cpu/atmega_common)
2023-06-22 18:58:13,398 # Manual SPI peripheral driver test (see README.md)
2023-06-22 18:58:13,399 # There are 1 SPI devices configured for your platform.
init 0 0 4
2023-06-22 18:58:32,086 # init 0 0 4
2023-06-22 18:58:32,161 # Trying to initialize SPI_DEV(0): mode: 0, clk: 4, cs_port: 0, cs_pin: 0
2023-06-22 18:58:32,270 # (if below the program crashes with a failed assertion, then it means the configuration is not supported)
2023-06-22 18:58:32,280 # Success.
bench
2023-06-22 18:58:41,590 # bench
2023-06-22 18:58:41,644 # ### Running some benchmarks, all values in [us] ###
2023-06-22 18:58:41,682 # ### Test				Transfer time	user time
2023-06-22 18:58:41,683 # 
2023-06-22 18:58:41,755 #  1 - write 1000 times 1 byte:			28456	28640
2023-06-22 18:58:41,827 #  2 - write 1000 times 2 byte:			28184	28352
2023-06-22 18:58:42,454 #  3 - write 1000 times 100 byte:		579528	579704
2023-06-22 18:58:42,563 #  4 - write 1000 times 1 byte to register:	54080	54256
2023-06-22 18:58:42,674 #  5 - write 1000 times 2 byte to register:	56720	56888
2023-06-22 18:58:43,340 #  6 - write 1000 times 100 byte to register:	608152	608320
2023-06-22 18:58:43,412 #  7 - read 1000 times 2 byte:			28304	28480
2023-06-22 18:58:44,025 #  8 - read 1000 times 100 byte:		567408	567576
2023-06-22 18:58:44,138 #  9 - read 1000 times 2 byte from register:	56840	57016
2023-06-22 18:58:44,793 # 10 - read 1000 times 100 byte from register:	596024	596200
2023-06-22 18:58:44,868 # 11 - transfer 1000 times 2 byte:		28336	28512
2023-06-22 18:58:45,510 # 12 - transfer 1000 times 100 byte:		592128	592304
2023-06-22 18:58:45,625 # 13 - transfer 1000 times 2 byte to register:	56960	57136
2023-06-22 18:58:46,306 # 14 - transfer 1000 times 100 byte to register:620744	620920
2023-06-22 18:58:46,373 # 15 - acquire/release 1000 times:		20960	21136
2023-06-22 18:58:46,879 # -- - SUM:					3922824	3925440
2023-06-22 18:58:46,880 # 
2023-06-22 18:58:46,907 # ### All runs complete ###
> 2023-06-22 18:58:54,706 # Exiting Pyterm
```
I always wonder how fast it really goes:
- #16727
- #18374
#### tests/periph/timer
```
tests/periph/timer$ BOARD=atmega1284p make -j64 clean all | grep '^  ' && BOARD=atmega1284p AVRDUDE_PROGRAMMER='usbasp -F' make flash 2>&1 | grep -- 'of flash' && BOARD=atmega1284p PORT=/dev/ttyACM0 make term
   text	   data	    bss	    dec	    hex	filename
   8968	    274	   1032	  10274	   2822	/home/hugues/github/cpu_atmega_common/RIOT/tests/periph/timer/bin/atmega1284p/tests_timer.elf
avrdude: 9242 bytes of flash written
avrdude: 9242 bytes of flash verified
/home/hugues/github/cpu_atmega_common/RIOT/dist/tools/pyterm/pyterm -p "/dev/ttyACM0" -b "9600"  
Twisted not available, please install it if you want to use pyterm's JSON capabilities
2023-06-22 19:00:15,136 # Connect to serial port /dev/ttyACM0
Welcome to pyterm!
Type '/exit' to exit.
2023-06-22 19:00:16,138 # 
2023-06-22 19:00:16,139 # Help: Press s to start test, r to print it is ready
s
2023-06-22 19:00:31,118 # START
2023-06-22 19:00:31,200 # main(): This is RIOT! (Version: 2020.07-devel-15351-gc5f75c-cpu/atmega_common)
2023-06-22 19:00:31,201 # 
2023-06-22 19:00:31,230 # Test for peripheral TIMERs
2023-06-22 19:00:31,231 # 
2023-06-22 19:00:31,251 # Available timers: 2
2023-06-22 19:00:31,252 # 
2023-06-22 19:00:31,270 # Testing TIMER_0:
2023-06-22 19:00:31,306 # TIMER_0: initialization successful
2023-06-22 19:00:31,324 # TIMER_0: stopped
2023-06-22 19:00:31,356 # TIMER_0: set channel 0 to 5000
2023-06-22 19:00:31,390 # TIMER_0: set channel 1 to 10000
2023-06-22 19:00:31,408 # TIMER_0: starting
2023-06-22 19:00:31,482 # TIMER_0: channel 0 fired at SW count     1247 - init:     1247
2023-06-22 19:00:31,547 # TIMER_0: channel 1 fired at SW count     2488 - diff:     1241
2023-06-22 19:00:31,551 # 
2023-06-22 19:00:31,568 # Testing TIMER_1:
2023-06-22 19:00:31,605 # TIMER_1: initialization successful
2023-06-22 19:00:31,622 # TIMER_1: stopped
2023-06-22 19:00:31,655 # TIMER_1: set channel 0 to 5000
2023-06-22 19:00:31,688 # TIMER_1: set channel 1 to 10000
2023-06-22 19:00:31,707 # TIMER_1: starting
2023-06-22 19:00:31,780 # TIMER_1: channel 0 fired at SW count     1247 - init:     1247
2023-06-22 19:00:31,846 # TIMER_1: channel 1 fired at SW count     2488 - diff:     1241
2023-06-22 19:00:31,849 # 
2023-06-22 19:00:31,864 # TEST SUCCEEDED
2023-06-22 19:00:31,939 # { "threads": [{ "name": "idle", "stack_size": 128, "stack_used": 86 }]}
2023-06-22 19:00:32,015 # { "threads": [{ "name": "main", "stack_size": 640, "stack_used": 120 }]}
2023-06-22 19:00:34,259 # Exiting Pyterm
```
#### tests/periph/uart
```
tests/periph/uart$ BOARD=atmega1284p make -j64 clean all | grep '^  ' && BOARD=atmega1284p AVRDUDE_PROGRAMMER='usbasp -F' make flash 2>&1 | grep -- 'of flash' && BOARD=atmega1284p PORT=/dev/ttyACM0 make term
   text	   data	    bss	    dec	    hex	filename
  15918	   1044	   2000	  18962	   4a12	/home/hugues/github/cpu_atmega_common/RIOT/tests/periph/uart/bin/atmega1284p/tests_uart.elf
avrdude: 16962 bytes of flash written
avrdude: 16962 bytes of flash verified
/home/hugues/github/cpu_atmega_common/RIOT/dist/tools/pyterm/pyterm -p "/dev/ttyACM0" -b "9600"  
Twisted not available, please install it if you want to use pyterm's JSON capabilities
2023-06-22 19:01:25,894 # Connect to serial port /dev/ttyACM0
Welcome to pyterm!
Type '/exit' to exit.
2023-06-22 19:01:26,896 # 
2023-06-22 19:01:26,898 # main(): This is RIOT! (Version: 2020.07-devel-15351-gc5f75c-cpu/atmega_common)
2023-06-22 19:01:26,898 # 
2023-06-22 19:01:26,899 # Manual UART driver test application
2023-06-22 19:01:26,899 # ===================================
2023-06-22 19:01:26,900 # This application is intended for testing additional UART
2023-06-22 19:01:26,900 # interfaces, that might be defined for a board. The 'primary' UART
2023-06-22 19:01:26,901 # interface is tested implicitly, as it is running the shell...
2023-06-22 19:01:26,901 # 
2023-06-22 19:01:26,902 # When receiving data on one of the additional UART interfaces, this
2023-06-22 19:01:26,902 # data will be outputted via STDIO. So the easiest way to test an 
2023-06-22 19:01:26,903 # UART interface, is to simply connect the RX with the TX pin. Then 
2023-06-22 19:01:26,904 # you can send data on that interface and you should see the data 
2023-06-22 19:01:26,904 # being printed to STDOUT
2023-06-22 19:01:26,904 # 
2023-06-22 19:01:26,904 # NOTE: all strings need to be '\n' terminated!
2023-06-22 19:01:26,904 # 
2023-06-22 19:01:26,909 # UARD_DEV(0): test uart_poweron() and uart_poweroff()  ->  [OK]
2023-06-22 19:01:26,910 # 
2023-06-22 19:01:26,921 # UART INFO:
2023-06-22 19:01:26,958 # Available devices:               2
2023-06-22 19:01:27,004 # UART used for STDIO (the shell): UART_DEV(0)
2023-06-22 19:01:27,006 # 
init 1 9600
2023-06-22 19:01:50,464 # init 1 9600
send 1 ping
2023-06-22 19:04:12,912 # send 1 ping
2023-06-22 19:04:12,934 # UART_DEV(1) TX: ping
> 2023-06-22 19:04:12,973 # Success: UART_DEV(1) RX: [ping]\n
2023-06-22 19:04:23,894 # Exiting Pyterm
````

### Issues/PRs references

Depends on PR:
- #19751


Co-authored-by: Hugues Larrive <hlarrive@pm.me>
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@bors @hugueslarrive
bors[bot] and hugueslarrive authored Jul 4, 2023
2 parents 852e9c5 + df17004 commit 2719f44
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Showing 11 changed files with 277 additions and 49 deletions.
17 changes: 12 additions & 5 deletions cpu/atmega_common/atmega_cpu.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
* 2017 RWTH Aachen, Josua Arndt
* 2018 Matthew Blue
* 2021 Gerson Fernando Budke
* 2023 Hugues Larrive
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
Expand All @@ -22,6 +23,7 @@
* @author Matthew Blue <matthew.blue.neuro@gmail.com>
* @author Francisco Acosta <francisco.acosta@inria.fr>
* @author Gerson Fernando Budke <nandojve@gmail.com>
* @author Hugues Larrive <hugues.larrive@pm.me>
*
* @}
*/
Expand Down Expand Up @@ -58,7 +60,7 @@ void avr8_reset_cause(void)
DEBUG("Watchdog reset!\n");
}
}
#if !defined (CPU_ATMEGA328P)
#if defined(JTRF)
if (mcusr_mirror & (1 << JTRF)) {
DEBUG("JTAG reset!\n");
}
Expand All @@ -67,7 +69,9 @@ void avr8_reset_cause(void)

void __attribute__((weak)) avr8_clk_init(void)
{
#if defined(CLKPR)
atmega_set_prescaler(CPU_ATMEGA_CLK_SCALE_INIT);
#endif
}

/* This is a vector which is aliased to __vector_default,
Expand All @@ -85,9 +89,12 @@ ISR(BADISR_vect)
{
avr8_reset_cause();

#if defined (CPU_ATMEGA256RFR2)
printf("IRQ_STATUS %#02x\nIRQ_STATUS1 %#02x\n",
(unsigned int)IRQ_STATUS, (unsigned int)IRQ_STATUS1);
#if defined(TRX_CTRL_0) /* megaRF */
printf("IRQ_STATUS %#02x\n", (unsigned int)IRQ_STATUS);

#if defined(IRQ_STATUS1)
printf("IRQ_STATUS1 %#02x\n", (unsigned int)IRQ_STATUS1);
#endif

printf("SCIRQS %#02x\nBATMON %#02x\n", (unsigned int)SCIRQS, (unsigned int)BATMON);

Expand All @@ -101,7 +108,7 @@ ISR(BADISR_vect)
core_panic(PANIC_GENERAL_ERROR, "BADISR");
}

#if defined(CPU_ATMEGA128RFA1) || defined (CPU_ATMEGA256RFR2)
#if defined(BAT_LOW_vect)
ISR(BAT_LOW_vect, ISR_BLOCK)
{
avr8_enter_isr();
Expand Down
44 changes: 42 additions & 2 deletions cpu/atmega_common/include/atmega_regs_common.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
* Copyright (C) 2016 Freie Universität Berlin
* 2016 INRIA
* 2017 Thomas Perrot <thomas.perrot@tupi.fr>
* 2023 Hugues Larrive
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
Expand All @@ -18,6 +19,7 @@
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @author Francisco Acosta <francisco.acosta@inria.fr>
* @author Thomas Perrot <thomas.perrot@tupi.fr>
* @author Hugues Larrive <hugues.larrive@pm.me>
*
*/

Expand All @@ -42,6 +44,7 @@ extern "C" {
/**
* @brief Timer register map
*/
#ifdef TCCR1C
typedef struct {
REG8 CRA; /**< control A */
REG8 CRB; /**< control B */
Expand All @@ -51,31 +54,57 @@ typedef struct {
REG16 ICR; /**< input capture */
REG16 OCR[3]; /**< output compare */
} mega_timer_t;
#else /* atmega8 */
typedef struct {
REG16 ICR; /**< input capture */
REG16 OCR[2]; /**< output compare */
REG16 CNT; /**< counter */
REG8 CRB; /**< control B */
REG8 CRA; /**< control A */
} mega_timer_t;
#endif

/**
* @brief 8-bit timer register map
*/
typedef struct {
#if ((defined(TCCR0A) && defined(TTCR0B)) || (defined(TCCR2A) && defined(TCCR2B)))
REG8 CRA; /**< control A */
REG8 CRB; /**< control B */
REG8 CNT; /**< counter */
REG8 OCR[2]; /**< output compare */
#elif defined(TCCR2)
REG8 OCR; /**< output compare */
REG8 CNT; /**< counter */
REG8 CR; /**< control */
#endif
} mini_timer_t;

/**
* @brief UART register map
*/
typedef struct {
#if defined(UCSR0A) || defined(UCSR1A)
REG8 CSRA; /**< control and status register A */
REG8 CSRB; /**< control and status register B */
REG8 CSRC; /**< control and status register C */
#ifdef CPU_ATMEGA32U4
#ifdef UCSR1D /* 32u4 */
REG8 CSRD; /**< control and status register D */
#else
REG8 reserved; /**< reserved */
#endif
REG16 BRR; /**< baud rate register */
REG8 DR; /**< data register */
#elif defined(UCSRA) /* atmega8 */
REG8 BRRL; /**< baud rate register low byte */
REG8 CSRB; /**< control and status register B */
REG8 CSRA; /**< control and status register A */
REG8 DR; /**< data register */
REG8 padding[19]; /**< 3 SPI + 3 PORTD + 3 PORTC + 3 PORTB
* + 3 reserved + 4 EEPROM = 19 */
REG8 CSRC; /**< control and status register C shared
* with baud rate register high byte */
#endif
} mega_uart_t;

/**
Expand All @@ -87,14 +116,20 @@ typedef struct {
#define MINI_TIMER0_DIV TIMER_DIV1_8_64_128_1024
#endif

#if defined(TCCR1A)
#if defined(TCCR1C)
#define MEGA_TIMER1_BASE (uint16_t *)(&TCCR1A)
#define MEGA_TIMER1 ((mega_timer_t *)MEGA_TIMER1_BASE)
#elif defined(TCCR1A) /* atmega8 */
#define MEGA_TIMER1_BASE (uint16_t *)(&ICR1L)
#define MEGA_TIMER1 ((mega_timer_t *)MEGA_TIMER1_BASE)
#endif

#if defined(TCCR2A)
#define MINI_TIMER2 ((mini_timer_t *)(uint16_t *)(&TCCR2A))
#define MINI_TIMER2_DIV TIMER_DIV1_8_32_64_128_256_1024
#elif defined(TCCR2) /* atmega8 */
#define MINI_TIMER2 ((mini_timer_t *)(uint16_t *)(&OCR2))
#define MINI_TIMER2_DIV TIMER_DIV1_8_32_64_128_256_1024
#endif

#if defined(TCCR3A)
Expand All @@ -117,6 +152,11 @@ typedef struct {
* @brief Peripheral register definitions and instances
* @{
*/
#if defined(UCSRA)
#define MEGA_UART_BASE ((uint16_t *)(&UBRRL))
#define MEGA_UART ((mega_uart_t *)MEGA_UART_BASE)
#endif

#if defined(UCSR0A)
#define MEGA_UART0_BASE ((uint16_t *)(&UCSR0A))
#define MEGA_UART0 ((mega_uart_t *)MEGA_UART0_BASE)
Expand Down
4 changes: 4 additions & 0 deletions cpu/atmega_common/include/cpu_clock.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -63,11 +63,15 @@ enum {
static inline void atmega_set_prescaler(uint8_t clk_scale)
{
/* Enable clock change */
#ifdef CLKPR
/* Must be assignment to set all other bits to zero, see datasheet */
CLKPR = (1 << CLKPCE);

/* Write clock within 4 cycles */
CLKPR = clk_scale;
#else
(void) clk_scale;
#endif
}

#ifdef __cplusplus
Expand Down
28 changes: 27 additions & 1 deletion cpu/atmega_common/include/periph_cpu_common.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
* Copyright (C) 2015 HAW Hamburg
* 2016 Freie Universität Berlin
* 2016 INRIA
* 2023 Hugues Larrive
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
Expand All @@ -18,6 +19,7 @@
* @author René Herthel <rene-herthel@outlook.de>
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @author Francisco Acosta <francisco.acosta@inria.fr>
* @author Hugues Larrive <hugues.larrive@pm.me>
*/

#ifndef PERIPH_CPU_COMMON_H
Expand Down Expand Up @@ -61,7 +63,27 @@ typedef uint8_t gpio_t;
*
* Must be identical to the address of `PINA` provided by avr/io.h
*/
#define ATMEGA_GPIO_BASE_A (0x20)
#if (defined(OCF1A) && defined(OCF1B) && (OCF1A > OCF1B)) \
|| (defined(PUD) && (PUD != 4)) || (defined(INT0) && (INT0 == 6))
/* match with 65 devices against 61 for (PORTB == _SFR_IO8(0x18)) which
* did not work here anyway */
#define GPIO_PORT_DESCENDENT
#endif

#ifdef GPIO_PORT_DESCENDENT
#ifdef _AVR_ATTINY1634_H_INCLUDED
/* the only one that requires particular treatment! */
#define ATMEGA_GPIO_BASE_A (0x2F)
#else
/* all other port descendent, including :
- _AVR_IO8534_ (only have port A but with 0x1B address) ;
- _AVR_IOAT94K_H_ (only have ports D and E) ;
- _AVR_IOTN28_H_ (only have ports A and D). */
#define ATMEGA_GPIO_BASE_A (0x39)
#endif /* _AVR_ATTINY1634_H_INCLUDED */
#else /* !GPIO_PORT_DESCENDENT */
#define ATMEGA_GPIO_BASE_A (0x20)
#endif /* GPIO_PORT_DESCENDENT */
/**
* @brief Base of the GPIO port G register as memory address
*
Expand Down Expand Up @@ -137,7 +159,11 @@ typedef struct {
static inline atmega_gpio_port_t *atmega_gpio_port(uint8_t port_num)
{
static const uintptr_t base_addr = (uintptr_t)ATMEGA_GPIO_BASE_A;
#ifdef GPIO_PORT_DESCENDENT
uintptr_t res = base_addr - port_num * sizeof(atmega_gpio_port_t);
#else
uintptr_t res = base_addr + port_num * sizeof(atmega_gpio_port_t);
#endif
/* GPIO ports up to (including) G are mapped in the I/O address space,
* port H and higher (if present) are mapped in a different contiguous
* region afterwards (e.g. 0x100 for ATmega2560). */
Expand Down
45 changes: 34 additions & 11 deletions cpu/atmega_common/periph/adc.c
View file
Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
/*
* Copyright (C) 2016 Laurent Navet <laurent.navet@gmail.com>
* 2017 HAW Hamburg, Dimitri Nahm
* 2023 Hugues Larrive
*
* This file is subject to the terms and conditions of the GNU Lesser General
* Public License v2.1. See the file LICENSE in the top level directory for more
Expand All @@ -17,6 +18,7 @@
* @author Laurent Navet <laurent.navet@gmail.com>
* @author Dimitri Nahm <dimitri.nahm@haw-hamburg.de>
* @author Sebastian Meiling <s@mlng.net>
* @author Hugues Larrive <hugues.larrive@pm.me>
* @}
*/

Expand Down Expand Up @@ -52,35 +54,53 @@ int adc_init(adc_t line)

_prep();

#if defined(DIDR0)
/* Disable corresponding Digital input */
if (line < 8) {
DIDR0 |= (1 << line);
}
#if defined(CPU_ATMEGA2560)
#if defined(DIDR2)
else {
DIDR2 |= (1 << (line - 8));
}
#endif
#endif

/* Set ADC-pin as input */
#if defined(CPU_ATMEGA328P)
#if !defined(PORTA) && defined(PC0)
/* 328p and 8 do not have PORTA, on 32u4 pins are named differently
* and it only have PORTC6 and PORTC7 */
DDRC &= ~(1 << line);
PORTC &= ~(1 << line);
#elif defined(CPU_ATMEGA1284P)
#elif defined(PORTA) && !defined(DIDR2) /* 1284p do not have DIDR2 */
DDRA &= ~(1 << line);
PORTA &= ~(1 << line);
#elif defined(CPU_ATMEGA2560) || defined(CPU_ATMEGA1281)
#elif defined(PORTF) /* 2560 and 1281 */
if (line < 8) {
DDRF &= ~(1 << line);
PORTF &= ~(1 << line);
}
#if defined(CPU_ATMEGA2560)
#if defined(PORTK) /* 2560 */
else {
DDRK &= ~(1 << (line - 8));
PORTK &= ~(1 << (line - 8));
}
#elif defined(PORTF0) && !defined(PORTF2) && !defined(PORTF3)
/* 32u4 do not have PORTF2 and PORTF3 */
else if (line == 8) {
DDRD &= ~(1 << PORTD4);
PORTD &= ~(1 << PORTD4);
}
else if (line < 11) {
DDRD &= ~(1 << (line - 3));
PORTD &= ~(1 << (line - 3));
}
else {
DDRK &= ~(1 << (line-8));
PORTK &= ~(1 << (line-8));
DDRB &= ~(1 << (line - 7));
PORTB &= ~(1 << (line - 7));
}
#endif /* CPU_ATMEGA2560 */
#endif /* CPU_ATMEGA328P */
#endif /* PORTK */
#endif /* PORTF */

/* set clock prescaler to get the maximal possible ADC clock value */
for (uint32_t clk_div = 1; clk_div < 8; ++clk_div) {
Expand Down Expand Up @@ -110,10 +130,12 @@ int32_t adc_sample(adc_t line, adc_res_t res)
_prep();

/* set conversion channel */
#if defined(CPU_ATMEGA328P) || defined(CPU_ATMEGA1281) || defined(CPU_ATMEGA1284P) || defined(CPU_ATMEGA32U4)
#if defined(ADMUX)
#if !defined(MUX5)
/* atmega8 ; 328p ; 1281 ; 1284p ; 32u4 */
ADMUX &= 0xf0;
ADMUX |= line;
#elif defined(CPU_ATMEGA2560) || defined(CPU_ATMEGA128RFA1) || defined(CPU_ATMEGA256RFR2)
#else /* 2560 ; 128rfa1 ; 256rfr2 */
if (line < 8) {
ADCSRB &= ~(1 << MUX5);
ADMUX &= 0xf0;
Expand All @@ -124,6 +146,7 @@ int32_t adc_sample(adc_t line, adc_res_t res)
ADMUX &= 0xf0;
ADMUX |= (line-8);
}
#endif
#endif

/* Start a new conversion. By default, this conversion will
Expand Down
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