Switch SAMD21 ticks to PER event

lib/utils/pyexec.c

@@ -149,7 +149,7 @@ STATIC int parse_compile_execute(const void *source, mp_parse_input_kind_t input
             mp_hal_stdout_tx_strn("\x04", 1);
         }
         // check for SystemExit
-        if (mp_obj_is_subclass_fast(MP_OBJ_FROM_PTR(((mp_obj_base_t *)nlr.ret_val)->type), MP_OBJ_FROM_PTR(&mp_type_SystemExit))) {
+        if (mp_obj_is_subclass_fast(mp_obj_get_type((mp_obj_t)nlr.ret_val), MP_OBJ_FROM_PTR(&mp_type_SystemExit))) {
             // at the moment, the value of SystemExit is unused
             ret = pyexec_system_exit;
         #if CIRCUITPY_ALARM

ports/atmel-samd/audio_dma.c

@@ -273,13 +273,13 @@ audio_dma_result audio_dma_setup_playback(audio_dma_t *dma,
 
     #ifdef SAM_D5X_E5X
     int irq = dma->event_channel < 4 ? EVSYS_0_IRQn + dma->event_channel : EVSYS_4_IRQn;
+    // Only disable and clear on SAMD51 because the SAMD21 shares EVSYS with ticks.
+    NVIC_DisableIRQ(irq);
+    NVIC_ClearPendingIRQ(irq);
     #else
     int irq = EVSYS_IRQn;
     #endif
 
-    NVIC_DisableIRQ(irq);
-    NVIC_ClearPendingIRQ(irq);
-
     DmacDescriptor *first_descriptor = dma_descriptor(dma_channel);
     setup_audio_descriptor(first_descriptor, dma->beat_size, output_spacing, output_register_address);
     if (single_buffer) {
@@ -374,7 +374,7 @@ STATIC void dma_callback_fun(void *arg) {
     audio_dma_load_next_block(dma);
 }
 
-void evsyshandler_common(void) {
+void audio_evsys_handler(void) {
     for (uint8_t i = 0; i < AUDIO_DMA_CHANNEL_COUNT; i++) {
         audio_dma_t *dma = audio_dma_state[i];
         if (dma == NULL) {
@@ -388,26 +388,4 @@ void evsyshandler_common(void) {
     }
 }
 
-#ifdef SAM_D5X_E5X
-void EVSYS_0_Handler(void) {
-    evsyshandler_common();
-}
-void EVSYS_1_Handler(void) {
-    evsyshandler_common();
-}
-void EVSYS_2_Handler(void) {
-    evsyshandler_common();
-}
-void EVSYS_3_Handler(void) {
-    evsyshandler_common();
-}
-void EVSYS_4_Handler(void) {
-    evsyshandler_common();
-}
-#else
-void EVSYS_Handler(void) {
-    evsyshandler_common();
-}
-#endif
-
 #endif

ports/atmel-samd/audio_dma.h

@@ -99,4 +99,6 @@ void audio_dma_background(void);
 
 uint8_t find_sync_event_channel_raise(void);
 
+void audio_evsys_handler(void);
+
 #endif  // MICROPY_INCLUDED_ATMEL_SAMD_AUDIO_DMA_H

ports/atmel-samd/boards/adafruit_proxlight_trinkey_m0/mpconfigboard.h

@@ -2,6 +2,7 @@
 #define MICROPY_HW_MCU_NAME "samd21e18"
 
 #define MICROPY_HW_NEOPIXEL (&pin_PA15)
+#define MICROPY_HW_NEOPIXEL_COUNT (2)
 
 #define IGNORE_PIN_PA01     1
 #define IGNORE_PIN_PA02     1

ports/atmel-samd/boards/adafruit_proxlight_trinkey_m0/mpconfigboard.mk

@@ -14,6 +14,7 @@ CIRCUITPY_FULL_BUILD = 0
 CIRCUITPY_ANALOGIO = 0
 CIRCUITPY_AUDIOCORE = 0
 CIRCUITPY_BUSIO_SPI = 0
+CIRCUITPY_BUSIO_UART = 0
 CIRCUITPY_PULSEIO = 0
 CIRCUITPY_PWMIO = 0
 CIRCUITPY_ROTARYIO = 0

ports/atmel-samd/boards/arduino_mkr1300/mpconfigboard.h

@@ -16,3 +16,16 @@
 // USB is always used internally so skip the pin objects for it.
 #define IGNORE_PIN_PA24     1
 #define IGNORE_PIN_PA25     1
+// USD ID
+#define IGNORE_PIN_PA18     1
+
+// Hooked to the external crystal
+#define IGNORE_PIN_PA00     1
+#define IGNORE_PIN_PA01     1
+
+// SWD only
+#define IGNORE_PIN_PA30     1
+#define IGNORE_PIN_PA31     1
+
+// Not connected
+#define IGNORE_PIN_PA28     1

ports/atmel-samd/boards/arduino_nano_33_iot/mpconfigboard.h

@@ -16,3 +16,11 @@
 // USB is always used internally so skip the pin objects for it.
 #define IGNORE_PIN_PA24     1
 #define IGNORE_PIN_PA25     1
+
+// Not connected
+#define IGNORE_PIN_PA00     1
+#define IGNORE_PIN_PA01     1
+
+// SWD only
+#define IGNORE_PIN_PA30     1
+#define IGNORE_PIN_PA31     1

ports/atmel-samd/common-hal/pulseio/PulseIn.c

@@ -272,6 +272,9 @@ void common_hal_pulseio_pulsein_deinit(pulseio_pulsein_obj_t *self) {
 void common_hal_pulseio_pulsein_pause(pulseio_pulsein_obj_t *self) {
     uint32_t mask = 1 << self->channel;
     EIC->INTENCLR.reg = mask << EIC_INTENSET_EXTINT_Pos;
+    #ifdef SAMD21
+    rtc_end_pulse();
+    #endif
 }
 
 void common_hal_pulseio_pulsein_resume(pulseio_pulsein_obj_t *self,
@@ -299,6 +302,9 @@ void common_hal_pulseio_pulsein_resume(pulseio_pulsein_obj_t *self,
     EIC->INTFLAG.reg = mask << EIC_INTFLAG_EXTINT_Pos;
     EIC->INTENSET.reg = mask << EIC_INTENSET_EXTINT_Pos;
 
+    #ifdef SAMD21
+    rtc_start_pulse();
+    #endif
     pulsein_set_config(self, true);
 }