Hi everyone
I am beginner and I want to use the adxl345 with msp430g2553 with I2C, but the example that I am using don´t working, always send 0 in the axes x,y and z. I use energia 1.6.10e18, the circuit have the pull'up resistor in SDA and SCL pines, and I remove the jumper of the green led. I used the same code but with arduino and it working but with enegia not, help me please.
My launchpad is MSP-EXP430G2 rev 1.5
The SCL is connected in pin 14 and the SDA in pin 15.
My OS is windows 7
When i put this function "Wire.setModule(0)" the mcu does make nothing, the uart don´t send nothing.
The code is the follow:
#include <Wire.h>
void setup()
{
Serial.begin(9600);
Serial.print("Iniciado");
Wire.begin();
writeTo(DATA_FORMAT, 0x01); //Put the ADXL345 into +/- 4G range by writing the value 0x01 to the DATA_FORMAT register.
writeTo(POWER_CTL, 0x08); //Put the ADXL345 into Measurement Mode by writing 0x08 to the POWER_CTL register.
}
void loop()
{
uint8_t howManyBytesToRead = 6;
readFrom( DATAX0, howManyBytesToRead, _buff); //read the acceleration data from the ADXL345
int X = (((int)_buff[1]) << 😎 | _buff[0];
int Y = (((int)_buff[3]) << 😎 | _buff[2];
int Z = (((int)_buff[5]) << 😎 | _buff[4];
Serial.print("x: ");
Serial.print( X );
Serial.print(" y: ");
Serial.print( Y );
delay(500);
}
void writeTo(byte address, byte val) {
Wire.beginTransmission(DEVICE); // start transmission to device
Wire.write(address); // send register address
Wire.write(val); // send value to write
Wire.endTransmission(); // end transmission
}
void readFrom(byte address, int num, byte _buff[]) {
Wire.beginTransmission(DEVICE); // start transmission to device
Wire.write(address); // sends address to read from
Wire.endTransmission(); // end transmission
Wire.beginTransmission(DEVICE); // start transmission to device
Wire.requestFrom(DEVICE, num); // request 6 bytes from device
int i = 0;
while(Wire.available()) // device may send less than requested (abnormal)
{ digitalWrite(RED_LED,HIGH);
_buff = Wire.read(); // receive a byte i++; } Wire.endTransmission(); // end transmission }
