14.3.2.1.1 Software Design Flow

I²C Master Mode

The I²C instance I2C_0 can be initialized by using MSS_I2C_init API. See the SmartFusion2_MSS_I2C_Driver_UG to use the I²C initialization API.

Write Operation

Write data to the target slave device using MSS_I2C_write API. This API ensures the presence of I2C_0 in Master mode for write transactions. The following parameters are required to use the I²C write API:

• Target slave device address (Ex.EEPROM)
• Data which is to be written to the target device
• Data size in bytes

Read Operation

Read data from the target slave device using MSS_I2C_read API. This API ensures the presence of I2C_0 in Master mode for read transactions. The following parameters are required to use the I²C read API:

• Target slave device address (Ex.EEPROM)
• Data buffer to collect the data from the target device
• Data size in bytes

For any I²C read or write transaction to complete, MSS_I2C_wait_complete API should be called. This API waits for the current I²C transaction to complete.