Enable old-style-definition diagnostic on atmel-samd

Author: jepler

ports/atmel-samd/Makefile

@@ -107,7 +107,7 @@ else
   endif
 endif
 
-CFLAGS += $(INC) -Wall -Werror -std=gnu11 -nostdlib -fshort-enums $(BASE_CFLAGS) $(CFLAGS_MOD) $(COPT) -Werror=missing-prototypes
+CFLAGS += $(INC) -Wall -Werror -std=gnu11 -nostdlib -fshort-enums $(BASE_CFLAGS) $(CFLAGS_MOD) $(COPT) -Werror=missing-prototypes -Werror=old-style-definition
 
 ifeq ($(CHIP_FAMILY), samd21)
 CFLAGS += \

ports/atmel-samd/audio_dma.c

@@ -30,7 +30,7 @@ static audio_dma_t *audio_dma_state[AUDIO_DMA_CHANNEL_COUNT];
 // This cannot be in audio_dma_state because it's volatile.
 static volatile bool audio_dma_pending[AUDIO_DMA_CHANNEL_COUNT];
 
-uint8_t find_sync_event_channel_raise() {
+uint8_t find_sync_event_channel_raise(void) {
     uint8_t event_channel = find_sync_event_channel();
     if (event_channel >= EVSYS_SYNCH_NUM) {
         mp_raise_RuntimeError(MP_ERROR_TEXT("All sync event channels in use"));

ports/atmel-samd/common-hal/analogio/AnalogIn.c

@@ -64,7 +64,7 @@ void common_hal_analogio_analogin_deinit(analogio_analogin_obj_t *self) {
     self->pin = NULL;
 }
 
-void analogin_reset() {
+void analogin_reset(void) {
 }
 
 uint16_t common_hal_analogio_analogin_get_value(analogio_analogin_obj_t *self) {

ports/atmel-samd/common-hal/touchio/TouchIn.c

@@ -91,7 +91,7 @@ void common_hal_touchio_touchin_deinit(touchio_touchin_obj_t *self) {
     self->config.pin = NO_PIN;
 }
 
-void touchin_reset() {
+void touchin_reset(void) {
     Ptc *ptc = ((Ptc *)PTC);
     if (ptc->CTRLA.bit.ENABLE == 1) {
         ptc->CTRLA.bit.ENABLE = 0;