/*
Sends a start to begin i2c transaction (with no strings attached)
*/
void sendStart(I2C_MODULE i2c){
while( ! I2CBusIsIdle(i2c));
DelayMs(2); // timing for ADXL345
I2CStart(i2c);
while( ! (I2CGetStatus(i2c) & I2C_START) );
I2CClearStatus(i2c, I2C_START);
}
/**************************************************************************************************
Function:
void I2CShared_ResetBus(const I2C_MODULE i2c)
Author(s):
mkobit
Summary:
Resets the I2C bus on a failure
Description:
Disables and reenables the bus, and then clears all status bits if it can
Preconditions:
None
Parameters:
const I2C_MODULE i2c - I2C module to be reset
Returns:
void
Example:
<code>
I2CShared_ResetBus(I2C1)
</code>
Conditions at Exit:
I2C enabled and cleared of all statuses
**************************************************************************************************/
void I2CShared_ResetBus(const I2C_MODULE i2c) {
I2CEnable(i2c, FALSE);
I2CEnable(i2c, TRUE);
I2CClearStatus(i2c, I2C_TRANSMITTER_FULL | I2C_DATA_AVAILABLE | \
I2C_SLAVE_READ | I2C_START | I2C_STOP | I2C_SLAVE_DATA | I2C_RECEIVER_OVERFLOW | I2C_TRANSMITTER_OVERFLOW | \
I2C_10BIT_ADDRESS | I2C_GENERAL_CALL | I2C_ARBITRATION_LOSS | I2C_TRANSMITTER_BUSY | I2C_BYTE_ACKNOWLEDGED);
}
/*
Sends a start inside i2c transaction (with no strings attached)
*/
void repeatStart(I2C_MODULE I2C){
I2CRepeatStart(I2C);
while( ! (I2CGetStatus(I2C) & I2C_START) );
I2CClearStatus(I2C, I2C_START);
}