I am working with TLC3548CDW. I have a problem reading analog channels of ADC. I attached signals and code. Right now I am reading only one channel, but I got the same data and it's not changing.
datasheet link of TLC3548CDW: https://www.ti.com/lit/ds/symlink/tlc3548.pdf?ts=1646236295165
VCC=+5 V
Ref. vol. = +5V
FS,CSTART = +5V
In the image, Ch1 is SCLK, Ch2 is MISO, Ch3 is MOSI, Ch4 is CS.
Thank you
#include <SPI.h>
#include <string.h>
/*Pin */
#define DATAOUT 11//COPI
#define DATAIN 12//CIPO
#define SPICLOCK 13//sck
#define TEMP_INT_READ 3
#define CHIPSELECT1 10//cs
#define CHIPSELECT2 8 //cs
#define CHIPSELECT3 7 //cs
#define MAX_VREF_VOLT (5000U)
#define MIN_VREF_VOLT (0U)
#define MAX_VALUE_IN_14BIT (16384U)
#define BIT_PER_MVOLT (MAX_VALUE_IN_14BIT/MAX_VREF_VOLT)
#define ADC_CH0 (0x00)
#define ADC_CH1 (0x01)
#define ADC_CH2 (0x02)
#define ADC_CH3 (0x03)
#define ADC_CH4 (0x04)
#define ADC_CH5 (0x05)
#define ADC_CH6 (0x06)
#define ADC_CH7 (0x07)
#define ADC_CH8 (0x08)
#define SENSORE_1 (0) //temp /CHIPSELECT1
#define SENSORE_2 (1) //CHIPSELECT2
unsigned int readRegister(int ,byte) ;
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
Serial.println("TESTSETUP");
// start the SPI library:
SPI.begin();
pinMode(DATAOUT, OUTPUT);
pinMode(DATAIN, INPUT);
pinMode(TEMP_INT_READ,INPUT);
pinMode(SPICLOCK,OUTPUT);
pinMode(CHIPSELECT1,OUTPUT);
pinMode(CHIPSELECT2,OUTPUT);
pinMode(CHIPSELECT3,OUTPUT);
//readRegister(0, 0x00);
digitalWrite(CHIPSELECT1,HIGH); //disable device
digitalWrite(CHIPSELECT2,HIGH); //disable device
digitalWrite(CHIPSELECT3,HIGH); //disable device
SPI.beginTransaction(SPISettings(14000000, MSBFIRST, SPI_MODE0));
}
int Value;
int pinstatus;
void loop() {
// put your main code here, to run repeatedly:
Value = readRegister(0,0x01);
Serial.println(Value);
delay(5);
pinstatus=digitalRead(TEMP_INT_READ);
Serial.println(pinstatus);
delay(100);
}
//Prototypes********
/void user_printf(const char format)
{
char Buff[100]={0};
va_list argptr;
\va_start(argptr, format);
\vsnprintf (Buff,100, format, argptr);
\va_end(argptr);
Serial.println(Buff);
}*/
//0000 0111 0000 0000
//0x0700
unsigned int readRegister(int sensore,byte channelnumber)
{
byte inByte = 0; // incoming byte from the SPI
unsigned char wData[2]={B00001111,B10000000};
unsigned char rData[2]={0};
unsigned int result = 0; // result to return
// user_printf("%d -> channel_number:%d",sensore,channelnumber);
// Serial.print("\t");
wData[0]=0x07|(channelnumber<<4);
wData[1]=0x00;
if(sensore == 1)
{
digitalWrite(CHIPSELECT2, LOW);
}
else
{
digitalWrite(CHIPSELECT1, LOW);
}
rData[0]=SPI.transfer(wData[0]);
rData[1]=SPI.transfer(wData[1]);
if(sensore == 1)
{
digitalWrite(CHIPSELECT2, HIGH);
}
else
{
digitalWrite(CHIPSELECT1, HIGH);
}
Serial.println(rData[0]);
Serial.println(wData[1]);
result=0x00|(rData[0]<<8)|(rData[1]<<0);
return (result);
}
