ESP32C3在arduino串口监视中无法打印数据
如题。串口波特率已经选择921600，求各位大佬解答。void setup() {
// put your setup code here, to run once:
Serial.begin(921600);
Serial.printf("hello world");
WiFi.begin(id,psw);
while (WiFi.status()!=WL_CONNECTED) {
delay(500);
Serial.println("正在连接...");
}
Serial.println("连接成功！");
client.setServer(mqttBroke,port);
client.setCallback(callback);
while (!client.connected()) {
String client_id = "esp32-client-";
client_id += String(WiFi.macAddress());
Serial.printf("The client %s connects to the public mqtt broker\n", client_id.c_str());
if (client.connect(client_id.c_str(), mqtt_username, mqtt_password)) {
Serial.println("Public emqx mqtt broker connected");
} else {
Serial.print("failed with state ");
Serial.print(client.state());
delay(2000);
}
}
client.subscribe(topic);
client.publish(topic,"esp32 conected to mqtt!");
pinMode(12,OUTPUT);
// pwmTimerConfig->speed_mode = LEDC_LOW_SPEED_MODE;
// pwmTimerConfig->timer_num = LEDC_TIMER_0;
// pwmTimerConfig->freq_hz = FREQ;
// pwmTimerConfig->clk_cfg = LEDC_USE_APB_CLK;
// pwmTimerConfig->duty_resolution = LEDC_TIMER_8_BIT;
// ledc_timer_config(pwmTimerConfig);
// pwmChannelConfig->gpio_num = 12;
// pwmChannelConfig->speed_mode = LEDC_LOW_SPEED_MODE;
// pwmChannelConfig->channel = LEDC_CHANNEL_0;
// pwmChannelConfig->intr_type = LEDC_INTR_DISABLE;
// pwmChannelConfig->timer_sel = LEDC_TIMER_0;
// pwmChannelConfig->duty = 0;
// pwmChannelConfig->hpoint = 0;
// ledc_channel_config(pwmChannelConfig);
}
void callback(char *topic, byte *payload, unsigned int length) {
Serial.print("Message arrived in topic: ");
Serial.println(topic);
Serial.print("Message:");
for (int i = 0; i < length; i++) {
Serial.print((char) payload);
}
Serial.println();
Serial.println("-----------------------");
switch(payload[0])
{
case '0':
digitalWrite(12,0);
break;
case '1':
digitalWrite(12,1);
break;
default:
Serial.println("???");
break;
}
}
void reconnect() {
while (!client.connected()) {
Serial.println("Reconnecting to MQTT broker...");
String client_id = "esp8266-client-";
client_id += String(WiFi.macAddress());
if (client.connect(client_id.c_str(), mqtt_username, mqtt_password)) {
Serial.println("Reconnected to MQTT broker.");
client.subscribe(topic);
} else {
Serial.print("Failed to reconnect to MQTT broker, rc=");
Serial.print(client.state());
Serial.println("Retrying in 5 seconds.");
delay(5000);
}
}
}
void loop() {
// put your main code here, to run repeatedly:
if (!client.connected()) {
reconnect();
}
client.loop();
// for (uint8_t i = 0; i < pow(RESOLUTION,2)-1; i++)
// {
// ledc_set_duty(LEDC_LOW_SPEED_MODE,LEDC_CHANNEL_0,i);
// ledc_update_duty(LEDC_LOW_SPEED_MODE, LEDC_CHANNEL_0);
// delay(1000);
// }
// for (uint8_t i = pow(RESOLUTION,2)-1; i > 0 ; i--)
// {
// ledc_set_duty(LEDC_LOW_SPEED_MODE,LEDC_CHANNEL_0,i);
// ledc_update_duty(LEDC_LOW_SPEED_MODE, LEDC_CHANNEL_0);
// delay(1000);
// }
}
单独测试串口打印是否可以？ DFEDU 发表于 2023-12-7 17:06
单独测试串口打印是否可以？
还是不行
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