[问答]

串行输出Arduino IDE没有得到任何输出的原因？

246

问答对人有帮助，内容完整，我也想知道答案 0 大家好。我能够将 ESP8266-01 连接到 Arduino IDE 并上传草图。它们似乎可以正常工作，因为我看到 ESP8266 访问点在此示例网络服务器中编程（https://learn.sparkfun.com/tutorials/es ... -guide/all）代码：全选#include ////////////////////// // WiFi Definitions // ////////////////////// const char WiFiAPPSK[] = "sparkfun"; ///////////////////// // Pin Definitions // ///////////////////// const int LED_PIN = 5; // Thing's onboard, green LED const int ANALOG_PIN = A0; // The only analog pin on the Thing const int DIGITAL_PIN = 12; // Digital pin to be read WiFiServer server(80); void setup() { initHardware(); setupWiFi(); server.begin(); } void loop() { // Check if a client has connected WiFiClient client = server.available(); if (!client) { return; } // Read the first line of the request String req = client.readStringUntil('r'); Serial.println(req); client.flush(); // Match the request int val = -1; // We'll use 'val' to keep track of both the // request type (read/set) and value if set. if (req.indexOf("/led/0") != -1) val = 0; // Will write LED low else if (req.indexOf("/led/1") != -1) val = 1; // Will write LED high else if (req.indexOf("/read") != -1) val = -2; // Will print pin reads // Otherwise request will be invalid. We'll say as much in HTML // Set GPIO5 according to the request if (val >= 0) digitalWrite(LED_PIN, val); client.flush(); // Prepare the response. Start with the common header: String s = "HTTP/1.1 200 OKrn"; s += "Content-Type: text/htmlrnrn"; s += "rnrn"; // If we're setting the LED, print out a message saying we did if (val >= 0) { s += "LED is now "; s += (val)?"on":"off"; } else if (val == -2) { // If we're reading pins, print out those values: s += "Analog Pin = "; s += String(analogRead(ANALOG_PIN)); s += " "; // Go to the next line. s += "Digital Pin 12 = "; s += String(digitalRead(DIGITAL_PIN)); } else { s += "Invalid Request. Try /led/1, /led/0, or /read."; } s += "n"; // Send the response to the client client.print(s); delay(1); Serial.println("Client disonnected"); // The client will actually be disconnected // when the function returns and 'client' object is detroyed } void setupWiFi() { WiFi.mode(WIFI_AP); // Do a little work to get a unique-ish name. Append the // last two bytes of the MAC (HEX'd) to "Thing-": uint8_t mac[WL_MAC_ADDR_LENGTH]; WiFi.softAPmacAddress(mac); String macID = String(mac[WL_MAC_ADDR_LENGTH - 2], HEX) + String(mac[WL_MAC_ADDR_LENGTH - 1], HEX); macID.toUpperCase(); String AP_NameString = "ESP8266 Thing " + macID; char AP_NameChar[AP_NameString.length() + 1]; memset(AP_NameChar, 0, AP_NameString.length() + 1); for (int i=0; i AP_NameChar = AP_NameString.charAt(i); WiFi.softAP(AP_NameChar, WiFiAPPSK); } void initHardware() { Serial.begin(115200); pinMode(DIGITAL_PIN, INPUT_PULLUP); pinMode(LED_PIN, OUTPUT); digitalWrite(LED_PIN, LOW); // Don't need to set ANALOG_PIN as input, // that's all it can be. } 我遇到的问题是我从来没有在串行监视器中得到输出。没有一行……它被设置为与编程时相同的 COM 端口，我尝试了不同的波特率。关于如何解决它的任何想法？ESP 通过 USB 串行适配器连接。编程有效，但没有串行输出。 0
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