sense.cpp

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#ifdef RUN_SENSE_TEST
#include <ADS126X.h>
#include <Arduino.h>
#include <SPI.h>
 
#define DRDY_PIN 22
#define DOUT 21  // MISO
#define DIN 19   // MOSI
#define SCLK 20
#define CS 17
 
#define DRDY_PIN 22  // brown 15
// #define AINCOM 3
// #define AVSS 5
#define DOUT 21   // purple 14
#define DIN 19    // yellow 7
#define SCLK 20   // green 13
#define CS 17     // blue 6
int i = 0;        // ADS126X pin AIN0, for positive input
int pos_pin = 0;  // ADS126X pin AIN0, for positive input
// int pos_pin = ADS126X_AIN0;
 
int neg_pin = 0xA;  // ADS1263 pin AINCOM, for negative input
 
unsigned long totalReadTime = 0;
unsigned long minReadTime = ULONG_MAX;
unsigned long maxReadTime = 0;
int readCount = 0;
unsigned long readTime = 0;
unsigned long start_time = 0;
 
void setup() {
    ADS126X adc;
    Serial.begin(115200);
    Serial.println("Here:");
    SPI.begin(SCLK, DOUT, DIN, CS);
 
    adc.begin(CS);    // setup with chip select pin
    adc.startADC1();  // start conversion on ADC1
    adc.setRate(ADS126X_RATE_38400);
 
    pinMode(DRDY_PIN, INPUT);
 
    Serial.println("Reading Voltages:");
}
 
void loop() {
    ADS126X adc;
    // REAL FOR LOOP
    for (int i = 0; i < 10; i++) {
        totalReadTime += readTime;
        readCount++;
        start_time = micros();
        unsigned long readTime = 0;
 
        long volt_reader = adc.readADC1(i, neg_pin);         // read the voltage
        float voltage = (float)(volt_reader) * 5 / 8388608;  // 2^23 = 8388608
 
        while (digitalRead(DRDY_PIN) == HIGH) {
            // wait
        }
        delayMicroseconds(150);
        // if drdy doesnt work, use this and comment out drdy
 
        volt_reader = adc.readADC1(i, neg_pin);  // read the voltage
        Serial.print(i);
        Serial.print(": ");
        Serial.println(volt_reader);  // send voltage through serial
        voltage = (float)(volt_reader) * 5 / 8388608;
        Serial.print(i);
        Serial.print(": ");
        Serial.print(voltage, 6);
        Serial.println(" V");
 
        while (digitalRead(DRDY_PIN) == HIGH) {
            // wait
        }
 
        delayMicroseconds(150);
        // if drdy doesnt work, use this and comment out drdy
 
        readTime = micros() - start_time;
        Serial.println("\nTiming statistics:");
        Serial.print("Current read time: ");
        Serial.print(readTime);
        Serial.println(" Aµs");
 
        // Calculate effective sampling rate
        float samplesPerSecond = 10000000.0 / readTime;
        Serial.print("Effective sampling rate: ");
        Serial.print(samplesPerSecond, 2);
        Serial.println(" samples per second");
 
        Serial.print("Total samples read: ");
        Serial.println(readCount * 10);
    }
}
#endif  // RUN_SENSE_TEST