Hello everybody,
I wrote the library and functions for MAX11040K, but I don’t read any data from adc. Is there any mistake on my circuit. The circuit is in attachment.
I want to read data from one, so I connected the other channel to GND.
Here is my code.
#include <SPI.h>
#include "MAX11040K_lib.h" // MAX11040K definitions.
#define MAX11040K_CS_PIN 4
#define MAX11040K_CS_LOW digitalWrite(MAX11040K_CS_PIN,LOW);
#define MAX11040K_CS_HIGH digitalWrite(MAX11040K_CS_PIN,HIGH);
void MAX11040K_Config(void)
{
unsigned char conf;
MAX11040K_CS_LOW;
SPI.transfer(MAX11040K_CS_PIN, 0xE0);
conf = SPI.transfer(MAX11040K_CS_PIN, 0);
MAX11040K_CS_HIGH;
Serial.print("First config settings:");
Serial.println(conf, BIN);
delay(10);
MAX11040K_CS_LOW;
SPI.transfer(MAX11040K_CS_PIN, 0x60);
SPI.transfer(MAX11040K_CS_PIN, 0x80); // shutdown firstly
MAX11040K_CS_HIGH;
delay(10);
MAX11040K_CS_LOW;
SPI.transfer(MAX11040K_CS_PIN, 0xE0);
conf = SPI.transfer(MAX11040K_CS_PIN, 0);
MAX11040K_CS_HIGH;
Serial.print("My config settings:");
Serial.println(conf, BIN);
delay(10);
MAX11040K_CS_LOW;
SPI.transfer(MAX11040K_CS_PIN, 0x60);
SPI.transfer(MAX11040K_CS_PIN, 0x64); // reset,enable24bit,pdbuf
MAX11040K_CS_HIGH;
delay(10);
MAX11040K_CS_LOW;
SPI.transfer(MAX11040K_CS_PIN, 0xE0);
conf = SPI.transfer(MAX11040K_CS_PIN, 0);
MAX11040K_CS_HIGH;
Serial.print("My config settings:");
Serial.println(conf, BIN);
}
void MAX11040K_Reading_Data(void)
{
int i = 0;
int j = 0;
unsigned long CH0_RES = 0;
unsigned long buff = 0;
unsigned char emp[12];
Serial.println("Reading data:");
//Reading data
MAX11040K_CS_LOW;
SPI.transfer(MAX11040K_CS_PIN, MAX11040K_READ_DATA_REG);
while(i<4)
{
buff = SPI.transfer(MAX11040K_CS_PIN,0);
CH0_RES = (CH0_RES << 8) + buff;
i++;
}
for(j = 0; j < 12; j++)
{
emp[j] = SPI.transfer(MAX11040K_CS_PIN,0);
}
MAX11040K_CS_HIGH;
//Two's complement
CH0_RES = 0xFFFFFF - CH0_RES;
CH0_RES = CH0_RES + 1;
Serial.print("CH0: ");
Serial.println(CH0_RES, BIN);
// Serial.print("CH1: ");
// Serial.println(result[1], BIN);
// Serial.print("CH2: ");
// Serial.println(result[2], BIN);
// Serial.print("CH3: ");
// Serial.println(result[3], BIN);
}
void setup()
{
unsigned char conf;
Serial.begin(9600);
SPI.begin(MAX11040K_CS_PIN);
pinMode(MAX11040K_DRYD_PIN, INPUT);
pinMode(MAX11040K_CS_PIN, OUTPUT);
digitalWrite(MAX11040K_CS_PIN, OUTPUT);
SPI.setDataMode(MAX11040K_CS_PIN, SPI_MODE2); // ADC CPOL=1 CPHA=0
SPI.setBitOrder(MSBFIRST);
SPI.setClockDivider(MAX11040K_CS_PIN, 21); // arduino DUE
MAX11040K_CS_HIGH;
Serial.println("sending...");
MAX11040K_Config();
delay(10);
}
void loop()
{
MAX11040K_Reading_Data();
delay(1000);
}
//end
