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9 years, 10 months ago.
LSM9DS0 library - import from arduino
Hello there,
I'm trying to import LSM9DS0 library from arduino to FRDM K64F mbed platform but I'm facing issues with that. I tried to import the following code:
uint8_t I2CreadByte(uint8_t address, uint8_t subAddress)
{
uint8_t data; // `data` will store the register data
Wire.beginTransmission(address); // Initialize the Tx buffer
Wire.write(subAddress); // Put slave register address in Tx buffer
Wire.endTransmission(false); // Send the Tx buffer, but send a restart to keep connection alive
Wire.requestFrom(address, (uint8_t) 1); // Read one byte from slave register address
data = Wire.read(); // Fill Rx buffer with result
return data; // Return data read from slave register
}
I translated into mbed as follows:
uint8_t I2CreadByte(uint8_t address, uint8_t subAddress)
{
char output = 0xff;
int wr = i2c.write(address << 1, (const char*)&subAddress, 1); // arduino addressing is 7-bit
int rd = i2c.read(address << 1, &output, 1);
return output;
}
The write is ok and return success (wr = 0) while the read is not working properly (rd=1)!
What is wrong with my translated code?
PS: the arduino library can be found here https://github.com/sparkfun/LSM9DS0_Breakout/tree/master/Libraries/Arduino/SFE_LSM9DS0
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Assigned to 9 years, 10 months ago.
This means that the question has been accepted and is being worked on.
how stupid I'm, I forgot to set the repeated flag !
the following code is working:
uint8_t I2CreadByte(uint8_t address, uint8_t subAddress) { char output = 0xff; int wr = i2c.write(address << 1, (const char*)&subAddress, 1, 1); // arduino addressing is 7-bit int rd = i2c.read(address << 1, &output, 1, 0); return output; }I found your question today.
I'm interested in this project. Could you publish your project on the web?
posted by Hiroshi SAITO 25 Sep 2014