I am using an ESP8266 and do not know why I can't compile. I wanted to save pin D1 into a variable and use it to declare pinmode and when using pin. but with the ESP8266 there is no pin 1, 2, 3 ... etc and I can't find a conversion chart anywhere so I attempted the following.
char servoPin = D1;
to save pin # and
myservo.attach(servoPin);
but received an error at the first code location saying D1' was not declared in this scope
I also tried
myservo.attach(D1);
and received same error here.
So my answer lies in questions,
- is there a pin map from chars to ints
- Did I declare servoPin correctly or
- Am I not even close
here's my total code. It's a slave esp8266 using esp-now communication was working fine using embedded LED prior to needing pins.
/****************************************************************************************************************************************************
* TITLE: ESP-NOW Getting Started Examples
*
* By Frenoy Osburn
* YouTube Video: https://youtu.be/_cNAsTB5JpM
****************************************************************************************************************************************************/
/********************************************************************************************************************
* Please make sure that you install the board support package for the ESP8266 boards.
* You will need to add the following URL to your Arduino preferences.
* Boards Manager URL: http://arduino.esp8266.com/stable/package_esp8266com_index.json
********************************************************************************************************************/
/********************************************************************************************************************
* Board Settings:
* Board: "WeMos D1 R1 or Mini"
* Upload Speed: "921600"
* CPU Frequency: "80MHz"
* Flash Size: "4MB (FS:@MB OTA:~1019KB)"
* Debug Port: "Disabled"
* Debug Level: "None"
* VTables: "Flash"
* IwIP Variant: "v2 Lower Memory"
* Exception: "Legacy (new can return nullptr)"
* Erase Flash: "Only Sketch"
* SSL Support: "All SSL ciphers (most compatible)"
* COM Port: Depends *On Your System*
*********************************************************************************************************************/
#include<ESP8266WiFi.h>
#include<espnow.h>
#include<Servo.h>
#define MY_NAME "SLAVE_BED_WINDOW"
//define global variables
bool openWindow;
bool closeWindow;
char servoPin = D1;
char stopOpen = D2;
char stopClose = D4;
Servo myservo;
//define structures
struct __attribute__((packed)) dataPacket {
bool structOpenWindow;
bool structCloseWindow;
};
//Define methods
void dataReceived(uint8_t *senderMac, uint8_t *data, uint8_t dataLength) {
char macStr[18];
dataPacket packet;
snprintf(macStr, sizeof(macStr), "%02x:%02x:%02x:%02x:%02x:%02x", senderMac[0], senderMac[1], senderMac[2], senderMac[3], senderMac[4], senderMac[5]);
digitalWrite(D2, HIGH);
Serial.println();
Serial.print("Received data from: ");
Serial.println(macStr);
memcpy(&packet, data, sizeof(packet));
openWindow = packet.structOpenWindow;
closeWindow = packet.structCloseWindow;
Serial.print("Sent Open Window: ");
Serial.println(packet.structOpenWindow);
Serial.print("Sent Close Window: ");
Serial.println(packet.structCloseWindow);
Serial.print("Open Window: ");
Serial.println(openWindow);
Serial.print("Close Window: ");
Serial.println(closeWindow);
}
//Setup program
void setup() {
myservo.attach(servoPin);
pinMode(stopOpen, INPUT_PULLUP);
pinMode(stopClose, INPUT_PULLUP);
//pinMode(2, OUTPUT);
//pinMode(16, OUTPUT);
//digitalWrite(2, LOW);
Serial.begin(9600); // initialize serial port
openWindow = 0;
closeWindow = 0;
Serial.println();
Serial.println();
Serial.println();
Serial.print("Initializing...");
Serial.println(MY_NAME);
Serial.print("My MAC address is: ");
Serial.println(WiFi.macAddress());
WiFi.mode(WIFI_STA);
WiFi.disconnect(); // we do not want to connect to a WiFi network
if(esp_now_init() != 0) {
Serial.println("ESP-NOW initialization failed");
return;
}
esp_now_register_recv_cb(dataReceived); // this function will get called once all data is sent
Serial.println("Initialized.");
}
//define program
void loop() {
delay(1000);
Serial.print("Open Window: ");
Serial.println(openWindow);
Serial.print("Close Window: ");
Serial.println(closeWindow);
//Serial.println(openWindow);
if(openWindow == 1) {
myservo.write(180);
digitalWrite(2, HIGH);
digitalWrite(16, LOW);
digitalWrite(D2, HIGH);
Serial.println("opening window");
if(!digitalRead(stopOpen)) {
openWindow = 0;
Serial.println("Window open");
}
} else if(closeWindow == 1) {
digitalWrite(16, HIGH);
digitalWrite(2, LOW);
digitalWrite(D2, LOW);
Serial.println("closing window");
if(!digitalRead(stopClose)) {
closeWindow = 0;
Serial.println("Window closed");
}
} else {
myservo.write(180);
Serial.println("no change ");
}
}
