Print last reset reason example (espressif#458)

Author: copercini

libraries/ESP32/examples/ResetReason/ResetReason.ino

@@ -0,0 +1,47 @@
+/* Print last reset reason of ESP32
+* by Evandro Luis Copercini - 2017
+* Public Domain License.
+*/
+
+#include <rom/rtc.h>
+
+void print_reset_reason(RESET_REASON reason)
+{
+ switch ( reason)
+ {
+ case 1 : Serial.println ("POWERON_RESET");break; /**<1, Vbat power on reset*/
+ case 3 : Serial.println ("SW_RESET");break; /**<3, Software reset digital core*/
+ case 4 : Serial.println ("OWDT_RESET");break; /**<4, Legacy watch dog reset digital core*/
+ case 5 : Serial.println ("DEEPSLEEP_RESET");break; /**<5, Deep Sleep reset digital core*/
+ case 6 : Serial.println ("SDIO_RESET");break; /**<6, Reset by SLC module, reset digital core*/
+ case 7 : Serial.println ("TG0WDT_SYS_RESET");break; /**<7, Timer Group0 Watch dog reset digital core*/
+ case 8 : Serial.println ("TG1WDT_SYS_RESET");break; /**<8, Timer Group1 Watch dog reset digital core*/
+ case 9 : Serial.println ("RTCWDT_SYS_RESET");break; /**<9, RTC Watch dog Reset digital core*/
+ case 10 : Serial.println ("INTRUSION_RESET");break; /**<10, Instrusion tested to reset CPU*/
+ case 11 : Serial.println ("TGWDT_CPU_RESET");break; /**<11, Time Group reset CPU*/
+ case 12 : Serial.println ("SW_CPU_RESET");break; /**<12, Software reset CPU*/
+ case 13 : Serial.println ("RTCWDT_CPU_RESET");break; /**<13, RTC Watch dog Reset CPU*/
+ case 14 : Serial.println ("EXT_CPU_RESET");break; /**<14, for APP CPU, reseted by PRO CPU*/
+ case 15 : Serial.println ("RTCWDT_BROWN_OUT_RESET");break;/**<15, Reset when the vdd voltage is not stable*/
+ case 16 : Serial.println ("RTCWDT_RTC_RESET");break; /**<16, RTC Watch dog reset digital core and rtc module*/
+ default : Serial.println ("NO_MEAN");
+ }
+}
+
+void setup() {
+ // put your setup code here, to run once:
+ Serial.begin(115200);
+ delay(2000);
+
+ Serial.println("CPU0 reset reason: ");
+ print_reset_reason(rtc_get_reset_reason(0));
+
+ Serial.println("CPU1 reset reason: ");
+ print_reset_reason(rtc_get_reset_reason(1));
+
+}
+
+void loop() {
+ // put your main code here, to run repeatedly:
+
+}