Hi, this is code i have taken reference from arduino on internet. I am able to read 0x92 on ID register.. can u check the seqence/commands of code is its ok? #include #define MOSI1 51 //MOSI #define MISO1 50 //MISO #define CLK1 52 //SCK #define PIN_CS 2 #define PIN_RESET 3 #define PIN_START 4 #define PIN_DRDY 5 #define READ 0x20 #define WRITE 0x40 #define ID 0x00 #define SDATAC 0x11 uint8_t debug_msg = 1U; String sep = "---------------------------------------------------------"; String hex_to_char(int hex_in) { int precision = 2; char tmp[16]; char format[128]; sprintf(format, "0x%%.%dX", precision); sprintf(tmp, format, hex_in); //Serial.print(tmp); return(String(tmp)); } uint8_t read_byte(uint8_t reg_addr) { uint8_t out = 0; digitalWrite(PIN_CS, LOW); SPI.transfer(0x20 | reg_addr); delayMicroseconds(5); SPI.transfer(0x00); delayMicroseconds(5); out = SPI.transfer(0x00); delayMicroseconds(1); digitalWrite(PIN_CS, HIGH); if(debug_msg) { Serial.println(sep); Serial.println( "sent:\t" + hex_to_char(reg_addr) ); Serial.println( "recieved:\t" + hex_to_char(out) ); } return(out); } void send_command(uint8_t cmd) { digitalWrite(PIN_CS, LOW); delayMicroseconds(5); // 5 = 6us at 32 SPI.transfer(cmd); delayMicroseconds(10); digitalWrite(PIN_CS, HIGH); } void setup() { Serial.begin(9600); pinMode(CLK1, OUTPUT); pinMode(MISO1, INPUT); pinMode(MOSI1, OUTPUT); pinMode(PIN_CS, OUTPUT); pinMode(PIN_RESET, OUTPUT); pinMode(PIN_START, OUTPUT); pinMode(PIN_DRDY, INPUT); digitalWrite(PIN_CS, HIGH); digitalWrite(PIN_START, LOW); SPI.begin(); SPI.setDataMode(SPI_MODE1); SPI.setClockDivider(SPI_CLOCK_DIV16); SPI.setBitOrder(MSBFIRST); delay(1000); digitalWrite(PIN_RESET, HIGH); delay(1000); digitalWrite(PIN_RESET, LOW); delay(1000); digitalWrite(PIN_RESET, HIGH); delay(100); digitalWrite(PIN_CS, LOW); delay(1000); digitalWrite(PIN_CS, HIGH); delay(1000); send_command(SDATAC); delay(10); for(;;) { uint8_t chSet = read_byte(READ | ID); Serial.print("-- ID" + String(chSet) + "--"); delay(1000); } } void loop() { }
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