esp32/main: Pin the uPy task to core 0.

dpgeorge · dpgeorge · commit 4a611a8a236d · 2016-12-19T13:06:48.000+11:00
Even though we run in single-core mode we pin to core 0 to be on the safe
side.  The ESP IDF points out some pitfalls using multi-core configuration
and suggests to pin tasks to a certain core if those tasks are responsible
for setting up interrupt handlers.
diff --git a/esp32/main.c b/esp32/main.c
@@ -96,7 +96,7 @@ void mp_task(void *pvParameter) {
 void app_main(void) {
     nvs_flash_init();
     // TODO use xTaskCreateStatic (needs custom FreeRTOSConfig.h)
-    xTaskCreate(mp_task, "mp_task", MP_TASK_STACK_LEN, NULL, MP_TASK_PRIORITY, NULL);
+    xTaskCreatePinnedToCore(mp_task, "mp_task", MP_TASK_STACK_LEN, NULL, MP_TASK_PRIORITY, NULL, 0);
     //xTaskCreateStatic(mp_task, "mp_task", MP_TASK_STACK_LEN, NULL, MP_TASK_PRIORITY, &mp_task_stack[0], &mp_task_tcb);
 }
 

Original file line number	Diff line number	Diff line change
`@@ -96,7 +96,7 @@ void mp_task(void *pvParameter) {`
`96`	`96`	`void app_main(void) {`
`97`	`97`	`nvs_flash_init();`
`98`	`98`	`// TODO use xTaskCreateStatic (needs custom FreeRTOSConfig.h)`
`99`		`- xTaskCreate(mp_task, "mp_task", MP_TASK_STACK_LEN, NULL, MP_TASK_PRIORITY, NULL);`
	`99`	`+ xTaskCreatePinnedToCore(mp_task, "mp_task", MP_TASK_STACK_LEN, NULL, MP_TASK_PRIORITY, NULL, 0);`
`100`	`100`	`//xTaskCreateStatic(mp_task, "mp_task", MP_TASK_STACK_LEN, NULL, MP_TASK_PRIORITY, &mp_task_stack[0], &mp_task_tcb);`
`101`	`101`	`}`
`102`	`102`