Espressif ESP32-S2 User Manual

Chapter 4. API Guides
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336 #endif
337 //Enable allocation in region where the startup stacks were located.
338 heap_caps_enable_nonos_stack_heaps();
339 app_main();
340 vTaskDelete(NULL);
341 }
342
(gdb)
By listing some lines before, you will see the function name main_task we have been looking for:
(gdb) l 326, 341
326 static void main_task(void* args)
327 {
328 // Now that the application is about to start, disable boot watchdogs
329 REG_CLR_BIT(TIMG_WDTCONFIG0_REG(0), TIMG_WDT_FLASHBOOT_MOD_EN_S);
330 REG_CLR_BIT(RTC_CNTL_WDTCONFIG0_REG, RTC_CNTL_WDT_FLASHBOOT_MOD_EN);
331 #if !CONFIG_FREERTOS_UNICORE
332 // Wait for FreeRTOS initialization to finish on APP CPU, before replacing␣
,→its startup stack
333 while (port_xSchedulerRunning[1] == 0) {
334 ;
335 }
336 #endif
337 //Enable allocation in region where the startup stacks were located.
338 heap_caps_enable_nonos_stack_heaps();
339 app_main();
340 vTaskDelete(NULL);
341 }
(gdb)
To see the other code, enter i threads. This will show the list of threads running on target:
(gdb) i threads
Id Target Id Frame
8 Thread 1073411336 (dport) 0x400d0848 in dport_access_init_core (arg=
,→<optimized out>)
at /home/user-name/esp/esp-idf/components/esp32s2/./dport_access.c:170
7 Thread 1073408744 (ipc0) xQueueGenericReceive (xQueue=0x3ffae694,␣
,→pvBuffer=0x0, xTicksToWait=1644638200,
xJustPeeking=0) at /home/user-name/esp/esp-idf/components/freertos/./queue.
,→c:1452
6 Thread 1073431096 (Tmr Svc) prvTimerTask (pvParameters=0x0)
at /home/user-name/esp/esp-idf/components/freertos/./timers.c:445
5 Thread 1073410208 (ipc1 : Running) 0x4000bfea in ?? ()
4 Thread 1073432224 (dport) dport_access_init_core (arg=0x0)
at /home/user-name/esp/esp-idf/components/esp32s2/./dport_access.c:150
3 Thread 1073413156 (IDLE) prvIdleTask (pvParameters=0x0)
at /home/user-name/esp/esp-idf/components/freertos/./tasks.c:3282
2 Thread 1073413512 (IDLE) prvIdleTask (pvParameters=0x0)
at /home/user-name/esp/esp-idf/components/freertos/./tasks.c:3282
* 1 Thread 1073411772 (main : Running) app_main () at /home/user-name/esp/blink/
,→main/./blink.c:43
(gdb)
The thread list shows the last function calls per each thread together with the name of C source file if available.
You can navigate to specific thread by entering thread N, where N is the thread Id. To see how it works go to
thread thread 5:
(gdb) thread 5
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Release v4.4

Espressif ESP32-S2 Specifications

General

Brand	Espressif
Model	ESP32-S2
Category	Single board computers
Language	English