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i2c.c
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#include "i2c.h"
uint8_t i2c_mem[ADI_I2C_MEMORY_SIZE];
ADI_I2C_HANDLE i2c_device;
uint32_t i2c_hwErrors;
ADI_I2C_RESULT i2cSetup(uint32_t const requestedBitRate32)
{
ADI_I2C_RESULT eResult;
if(ADI_I2C_SUCCESS != (eResult=adi_i2c_Open(0, i2c_mem, ADI_I2C_MEMORY_SIZE, &i2c_device)))
{
return eResult;
}
if(ADI_I2C_SUCCESS != (eResult=adi_i2c_Reset(i2c_device)))
{
return eResult;
}
if(ADI_I2C_SUCCESS != (eResult=adi_i2c_SetBitRate(i2c_device, requestedBitRate32)))
{
return eResult;
}
return eResult;
}
ADI_I2C_RESULT i2cRead(uint16_t const SlaveAddress, uint8_t bytes, uint8_t* data)
{
ADI_I2C_RESULT result;
ADI_I2C_TRANSACTION transaction;
//set slave address
result = adi_i2c_SetSlaveAddress(i2c_device, SlaveAddress);
if(result)
return result;
//build transaction
transaction.nPrologueSize = 0;
transaction.nDataSize = bytes;
transaction.pData = data;
transaction.bReadNotWrite = true;
transaction.bRepeatStart = true;
result = adi_i2c_ReadWrite(i2c_device, &transaction, &i2c_hwErrors);
if(result)
return result;
return 0;
}
ADI_I2C_RESULT i2cWrite(uint16_t const SlaveAddress, uint8_t bytes, uint8_t* data)
{
ADI_I2C_RESULT result;
ADI_I2C_TRANSACTION transaction;
//set slave address
result = adi_i2c_SetSlaveAddress(i2c_device, SlaveAddress);
if(result)
return result;
//build transaction
transaction.nPrologueSize = 0;
transaction.nDataSize = bytes;
transaction.pData = data;
transaction.bReadNotWrite = false;
transaction.bRepeatStart = true;
result = adi_i2c_ReadWrite(i2c_device, &transaction, &i2c_hwErrors);
if(result)
return result;
return 0;
}
ADI_I2C_RESULT i2cWriteDS3231(uint8_t bytes, uint8_t* data)
{
ADI_I2C_RESULT result;
ADI_I2C_TRANSACTION transaction;
//set slave address
result = adi_i2c_SetSlaveAddress(i2c_device, CLOCK_ADDRESS);
if(result)
return result;
//build transaction
transaction.pPrologue = data;
transaction.nPrologueSize = 0;
transaction.nDataSize = bytes;
transaction.pData = data;
transaction.bReadNotWrite = false;
transaction.bRepeatStart = false;
result = adi_i2c_ReadWrite(i2c_device, &transaction, &i2c_hwErrors);
if(result)
return result;
return 0;
}
ADI_I2C_RESULT i2cReadDS3231(uint8_t bytes, uint8_t* data)
{
ADI_I2C_RESULT result;
ADI_I2C_TRANSACTION transaction;
//set slave address
result = adi_i2c_SetSlaveAddress(i2c_device, CLOCK_ADDRESS);
if(result)
return result;
//build transaction
transaction.pPrologue = data;
transaction.nPrologueSize = 0;
transaction.nDataSize = bytes;
transaction.pData = data;
transaction.bReadNotWrite = true;
transaction.bRepeatStart = false;
result = adi_i2c_ReadWrite(i2c_device, &transaction, &i2c_hwErrors);
if(result)
return result;
return 0;
}