* This function writes data to the i2c slave device registers.
*
* Parameters:
- * deviceAddress - i2c Slave device address
+ * addr - i2c Slave device address
* length - Total number of bytes to be written to the device
- * pBuffer - The buffer that contains the data to be written to the
+ * buf - The buffer that contains the data to be written to the
* i2c device.
*
* Return Value:
* Total number of bytes those are actually written.
*/
static unsigned int hw_i2c_write_data(
- unsigned char deviceAddress,
+ unsigned char addr,
unsigned int length,
- unsigned char *pBuffer
+ unsigned char *buf
)
{
unsigned char count, i;
- unsigned int totalBytes = 0;
+ unsigned int total_bytes = 0;
/* Set the Device Address */
- POKE32(I2C_SLAVE_ADDRESS, deviceAddress & ~0x01);
+ POKE32(I2C_SLAVE_ADDRESS, addr & ~0x01);
/* Write data.
* Note:
/* Move the data to the I2C data register */
for (i = 0; i <= count; i++)
- POKE32(I2C_DATA0 + i, *pBuffer++);
+ POKE32(I2C_DATA0 + i, *buf++);
/* Start the I2C */
POKE32(I2C_CTRL, FIELD_SET(PEEK32(I2C_CTRL), I2C_CTRL, CTRL, START));
length -= (count + 1);
/* Total byte written */
- totalBytes += (count + 1);
+ total_bytes += (count + 1);
} while (length > 0);
- return totalBytes;
+ return total_bytes;
}
* in the given buffer
*
* Parameters:
- * deviceAddress - i2c Slave device address
+ * addr - i2c Slave device address
* length - Total number of bytes to be read
- * pBuffer - Pointer to a buffer to be filled with the data read
+ * buf - Pointer to a buffer to be filled with the data read
* from the slave device. It has to be the same size as the
* length to make sure that it can keep all the data read.
*
* Total number of actual bytes read from the slave device
*/
static unsigned int hw_i2c_read_data(
- unsigned char deviceAddress,
+ unsigned char addr,
unsigned int length,
- unsigned char *pBuffer
+ unsigned char *buf
)
{
unsigned char count, i;
- unsigned int totalBytes = 0;
+ unsigned int total_bytes = 0;
/* Set the Device Address */
- POKE32(I2C_SLAVE_ADDRESS, deviceAddress | 0x01);
+ POKE32(I2C_SLAVE_ADDRESS, addr | 0x01);
/* Read data and save them to the buffer.
* Note:
/* Save the data to the given buffer */
for (i = 0; i <= count; i++)
- *pBuffer++ = PEEK32(I2C_DATA0 + i);
+ *buf++ = PEEK32(I2C_DATA0 + i);
/* Substract length by 16 */
length -= (count + 1);
/* Number of bytes read. */
- totalBytes += (count + 1);
+ total_bytes += (count + 1);
} while (length > 0);
- return totalBytes;
+ return total_bytes;
}