Blinking the LED works. Clocks should be set up correctly.

Everything works fine without USB being plugged in but faults (I think) when USB is plugged in. This is switched away from the USB code from the bootloader onto the USB code thats generated by Atmel Studio using the high level classes from ASF.

1 files changed, 35 insertions, 0 deletions

diff --git a/atmel-samd/main.c b/atmel-samd/main.c
index 1033a44c1..86e3757db 100644
--- a/atmel-samd/main.c
+++ b/atmel-samd/main.c
@@ -9,6 +9,15 @@
 #include "py/gc.h"
 #include "lib/utils/pyexec.h"
 
+#include "asf/common/services/sleepmgr/sleepmgr.h"
+#include "asf/common/services/usb/udc/udc.h"
+#include "asf/common2/services/delay/delay.h"
+#include "asf/sam0/drivers/port/port.h"
+#include "asf/sam0/drivers/system/system.h"
+
+#include "mpconfigboard.h"
+#include "sam_ba_usb.h"
+
 void do_str(const char *src, mp_parse_input_kind_t input_kind) {
     mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, src, strlen(src), 0);
     if (lex == NULL) {
@@ -162,6 +171,32 @@ void _start(void) {
 #if MICROPY_MIN_USE_SAMD21_MCU
 
 void samd21_init(void) {
+
+  irq_initialize_vectors();
+  cpu_irq_enable();
+
+  // Initialize the sleep manager
+  sleepmgr_init();
+
+  system_init();
+
+  delay_init();
+
+  struct port_config pin_conf;
+  port_get_config_defaults(&pin_conf);
+
+  pin_conf.direction  = PORT_PIN_DIR_OUTPUT;
+  port_pin_set_config(MICROPY_HW_LED1, &pin_conf);
+  port_pin_set_output_level(MICROPY_HW_LED1, false);
+
+  // Start USB stack to authorize VBus monitoring
+
+  udc_start();
+  for (int i = 0; i < 10; i++) {
+    port_pin_toggle_output_level(MICROPY_HW_LED1);
+    delay_ms(500);
+  }
+
 }
 
 #endif