// This is BLE based server client model.
// This part of the code sends ECG signal from ADS1292R ECG sensor, to the mobile app via ESP32 using the BLE protcol.
// This is server code as all the sensors correspond/act like servers which advertise to the client(mobile app) when they are ready to transfer the app.

/*
 VSPI PIN OUT FOR ESP32
 CS       D5
 SCLK     D18
 MOSI     D23
 MISO     D19

 HSPI PIN OUT FOR ESP32
 CS       D15
 SCLK     D14
 MOSI     D13
 MISO     D12

 Here we have VSPI hardware.
*/

//#include <BLEDevice.h>
//#include <BLEUtils.h>
//#include <BLEServer.h>
//#include "BLE2904.h"
#include "protocentralAds1292r.h"
#include "SPI.h"



// See the following for generating UUIDs:
// https://www.uuidgenerator.net/
  

#define SERVICE_UUID        "4fafc201-1fb5-459e-8fcc-c5c9c331914b"  //creating the service UUID
#define CHARACTERISTIC_UUID "beb5483e-36e1-4688-b7f5-ea07361b26a8"  //creating the characteristics UUID

#define ESP32_V_SPI_CS_PIN 5
#define ADS1292R_PWRDN_PIN 27
#define ADS1292R_START_PIN 15
#define ADS292R_DATAREADY_PIN 22

char Reg_read_data;
bool data_available;

#define LED_BUILTIN 2 //pin with LED to turn on when BT connected

ads1292OutputValues* ADS1292RegValues; 
ads1292r ECG_SENSOR_ADS1292R;
/*-----------------Function to detect Lead off condition in ECG.----------------------*/

/*------------------------------------------------------------------------------------*/

/*------------------------Setup or main function.---------------------------*/
void setup() {

  pinMode(ESP32_V_SPI_CS_PIN,OUTPUT);
  pinMode(ADS1292R_PWRDN_PIN,OUTPUT);
  pinMode(ADS1292R_START_PIN,OUTPUT);
  pinMode(ADS292R_DATAREADY_PIN,INPUT);
   
  digitalWrite(ESP32_V_SPI_CS_PIN,LOW);
  digitalWrite(ADS1292R_PWRDN_PIN,LOW);
  digitalWrite(ADS1292R_START_PIN,HIGH);

  SPI.beginTransaction(SPISettings(1000000, MSBFIRST, SPI_MODE1));
  delay(100);
  SPI.begin();
  
  Serial.begin(9600); // define the baud rate of ESP32

/*-------------Setting up the Sensor------------------------*/



  
//For Debug purpose only.
//Reading the Chip ID
  ECG_SENSOR_ADS1292R.ads1292RegRead(ESP32_V_SPI_CS_PIN,ADS1292R_PWRDN_PIN,ADS1292R_START_PIN,ADS1292_REG_ID,Reg_read_data);
  Serial.println("CHIP ID is:");
  Serial.println(Reg_read_data,HEX);



}
/*------------------------------------------------------------------------------------*/


void loop() {
  // put your main code here, to run repeatedly:


}