bug: instruction esp_now_send causes ESP8266MOD to crash due to hardware watchdog reset
Posted: Thu Sep 14, 2023 9:34 am
Using instruction esp_now_send causes ESP8266MOD to crash due to hardware watchdog reset.
I also found a workaround for that, that is to setup the GPIO16 as OUTPUT during setup (i.e. pinMode(16, OUTPUT) ), but I don't realize why this happens and how this could be related to esp_now_send instruction.
I also found a workaround for that, that is to setup the GPIO16 as OUTPUT during setup (i.e. pinMode(16, OUTPUT) ), but I don't realize why this happens and how this could be related to esp_now_send instruction.
Code: Select all
#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <espnow.h>
uint8_t targetAddr[] = {0x8C, 0xAA, 0xB5, 0xB5, 0x90, 0x60};
byte myData = 1;
int cnt = 0;
void OnDataSent(uint8_t *mac, uint8_t sendStatus)
{
if (sendStatus == 0) {
Serial.println("Delivery success");
}
else {
Serial.println("Delivery fail");
}
}
void setup()
{
Serial.begin(115200);
WiFi.mode(WIFI_STA);
if (esp_now_init() != 0) {
Serial.println("Error initializing ESP-NOW");
return;
}
esp_now_set_self_role(ESP_NOW_ROLE_CONTROLLER);
esp_now_register_send_cb(OnDataSent);
esp_now_add_peer(targetAddr, ESP_NOW_ROLE_SLAVE, 1, NULL, 0);
}
void loop()
{
if (cnt % 10000 == 0) {
Serial.println(cnt);
esp_now_send(targetAddr, (uint8_t *) &myData, sizeof(myData));
}
cnt += 1;
}Code: Select all
ets Jan 8 2013,rst cause:4, boot mode:(3,6)
wdt reset
load 0x4010f000, len 3424, room 16
tail 0
chksum 0x2e
load 0x3fff20b8, len 40, room 8
tail 0
chksum 0x2b
csum 0x2b
v00042e70
~ld
⸮����⸮n⸮�r⸮⸮n|⸮l⸮l`��b���b�r��l⸮nb⸮n�l`�⸮�r�l⸮l�⸮⸮
0