Bluefruit LE UART Friend on Arduino Uno

Projects General Guidance
17

Great progress :grinning:

Yes, the message from the phone is in ble.buffer.

Using strcmp() is a way to test what is in the buffer.

if ((strcmp(ble.buffer, "test") == 0))
{Serial.println("Yay it works");}

Here is a sketch I wrote some time ago to manage an led blink with the SPI BLE friend so you'll have to change to the software serial object.

//#include <Arduino.h>
#include <SPI.h>
#include "Adafruit_BLE.h"
#include "Adafruit_BluefruitLE_SPI.h"
//#include "Adafruit_BluefruitLE_UART.h"

#include "BluefruitConfig.h"

/* ...hardware SPI, using SCK/MOSI/MISO hardware SPI pins and then user selected CS/IRQ/RST */
Adafruit_BluefruitLE_SPI ble(BLUEFRUIT_SPI_CS, BLUEFRUIT_SPI_IRQ, BLUEFRUIT_SPI_RST);

#define LED_PIN  13
unsigned long BLINKTIME = 1000;
unsigned long t_blink = 0L;
int blinkState = LOW;

void setup(void)
{
  pinMode(LED_PIN, OUTPUT);
  ble.begin();
  ble.factoryReset();

  Serial.begin(115200);
}

void loop(void)
{
 // static int val = 0;
  // Now Check for incoming characters from Bluefruit
  ble.println("AT+BLEUARTRX");
  ble.readline();

  if ((strcmp(ble.buffer, "STATUS") == 0))
  {
    ble.print("AT+BLEUARTTX=");
    if (t_blink) {
      ble.println("STATUS = BLINK");
    }
    else {
      if (blinkState)
        ble.println("STATUS = ON");
      else
        ble.println("STATUS = OFF");
    }
  }

  if ((strcmp(ble.buffer, "ON") == 0))
  {
    blinkState = HIGH;
    digitalWrite(LED_PIN, blinkState);
    t_blink = 0;
    ble.print("AT+BLEUARTTX=");
    ble.println("ON");
  }

  if ((strcmp(ble.buffer, "OFF") == 0))
  {
    blinkState = LOW;
    digitalWrite(LED_PIN, blinkState);
    t_blink = 0;
    ble.print("AT+BLEUARTTX=");
    ble.println("OFF");
  }

  if ((strcmp(ble.buffer, "BLINK") == 0))
  {
    if (!t_blink) t_blink = millis();
    ble.print("AT+BLEUARTTX=");
    delay(50);
    ble.println("BLINK");
  }

  //Terminal input to modify blink rate "Txxx" 
  if (ble.buffer[0] == 'T')//does terminal input start with "T"
  {
    //use memmove or create pointer and increment index to get to integer after 'T'
    //memmove(ble.buffer, ble.buffer+1, strlen(ble.buffer));//strlen does not include null terminator
    //int value = atoi(ble.buffer);
    char *bufferString = ble.buffer;
    bufferString++;
    int value = atoi(bufferString);
    BLINKTIME = value;
  }

  if (t_blink) {
    if (t_blink > millis()) t_blink = millis();
    if ((millis() - t_blink) > BLINKTIME) {
      blinkState = !blinkState;
      digitalWrite(LED_PIN, blinkState);
      t_blink = millis();
    }
  }
}