3ab1f346
 rfoucaul
Modification fina...
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/*
WriteSingleField
Description: Writes a value to a channel on ThingSpeak every 20 seconds.
Hardware: Arduino compatible hardware controlling ESP8266 through AT commands. THIS IS CODE FOR THE ARDUINO, NOT THE ESP8266!
!!! IMPORTANT - Modify the secrets.h file for this project with your network connection and ThingSpeak channel details. !!!
Note:
- Requires Arduino main board connected to ESP8266 (ESP-01) serial pins
- The ESP8266 device must be running firmware capable of AT commands over TX/RX pins.
Details on reflashing and binaries can be found here: https://www.espressif.com/en/support/download/at
- Requires WiFiEsp library which is available through the Library Manager. The logging level for the WiFiEsp library is set to INFO.
To disable logging completely, set _ESPLOGLEVEL_ to 0 in \Arduino\libraries\WiFiEsp\src\utility\debug.h
- Use TX1/RX1 if present on Arduino header (Mega, Due, etc). If not, then connect TX to pin 7, RX to pin 6.
- Some boards (Uno, Nano, Leonardo, etc) do not have enough memory to handle writing large strings to ThingSpeak.
For these boards, keep individual field data lengths 32 characters or less.
- This example is written for a network using WPA encryption. For WEP or WPA, change the WiFi.begin() call accordingly.
Wiring diagrams are available at:
SoftSerial (Uno, Nano, Mini, etc): https://github.com/mathworks/thingspeak-arduino/blob/master/ESP-01_AT_Commands_SoftSerial_Hookup.pdf
Hardware Serial1 (Mega, Leonardo, Due) - https://github.com/mathworks/thingspeak-arduino/blob/master/ESP-01_AT_Commands_Hardware_Serial_Hookup.pdf
ESP8266 | Arduino without Serial1 | Arduino with Serial1
--------------------------------------------------------
RX | pin 7 | TX1
TX | pin 6 | RX1
GND | GND | GND
VCC | 5V | 5V
CH_PD | 5V | 5V
ThingSpeak ( https://www.thingspeak.com ) is an analytic IoT platform service that allows you to aggregate, visualize, and
analyze live data streams in the cloud. Visit https://www.thingspeak.com to sign up for a free account and create a channel.
Documentation for the ThingSpeak Communication Library for Arduino is in the README.md folder where the library was installed.
See https://www.mathworks.com/help/thingspeak/index.html for the full ThingSpeak documentation.
For licensing information, see the accompanying license file.
Copyright 2019, The MathWorks, Inc.
*/
#include "WiFiEsp.h"
char ssid[] = SECRET_SSID; // your network SSID (name)
char pass[] = SECRET_PASS; // your network password
WiFiEspClient client;
#include "SoftwareSerial.h"
SoftwareSerial Serial1(6, 7);
#define ESP_BAUDRATE 115200
void setup() {
//Initialize serial and wait for port to open
Serial.begin(9600);
// initialize serial for ESP module
setEspBaudRate(ESP_BAUDRATE);
Serial.print("Searching for ESP8266...");
// initialize ESP module
WiFi.init(&Serial1);
}
void loop() {
mesureRSSI();
delay(5000);
}
// This function attempts to set the ESP8266 baudrate. Boards with additional hardware serial ports
// can use 115200, otherwise software serial is limited to 19200.
void setEspBaudRate(unsigned long baudrate){
long rates[6] = {115200,74880,57600,38400,19200,9600};
Serial.print("Setting ESP8266 baudrate to ");
Serial.print(baudrate);
Serial.println("...");
for(int i = 0; i < 6; i++){
Serial1.begin(rates[i]);
delay(100);
Serial1.print("AT+UART_DEF=");
Serial1.print(baudrate);
Serial1.print(",8,1,0,0\r\n");
delay(100);
}
Serial1.begin(baudrate);
}
void mesureRSSI(){
Serial.println("Prise de mesure\n");
// Connect or reconnect to WiFi
if(WiFi.status() != WL_CONNECTED){
//Serial.print("Attempting to connect to SSID: ");
//Serial.println(SECRET_SSID);
while(WiFi.status() != WL_CONNECTED){
WiFi.begin(ssid, pass); // Connect to WPA/WPA2 network. Change this line if using open or WEP network
//Serial.print(".");
delay(100);
}
//Serial.println("\nConnected");
}
int rssi = 0;
while(rssi==0){
rssi = WiFi.RSSI();
}
Serial.print("RSSI : ");
Serial.println(rssi);
}
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