Workflow

Configure and enable module.

void configure_i2c_master(void)
{
    /* Initialize config structure and software module. */
    struct i2c_master_config config_i2c_master;
    i2c_master_get_config_defaults(&config_i2c_master);

    /* Change buffer timeout to something longer. */
    config_i2c_master.buffer_timeout = 10000;

    /* Initialize and enable device with config. */
    i2c_master_init(&i2c_master_instance, CONF_I2C_MASTER_MODULE, &config_i2c_master);

    i2c_master_enable(&i2c_master_instance);
}

1. 1.1.
   Create and initialize configuration structure.

   struct i2c_master_config config_i2c_master;
   i2c_master_get_config_defaults(&config_i2c_master);
   

2. 1.2.
   Change settings in the configuration.

   config_i2c_master.buffer_timeout = 10000;
   

3. 1.3.
   Initialize the module with the set configurations.

   i2c_master_init(&i2c_master_instance, CONF_I2C_MASTER_MODULE, &config_i2c_master);
   

4. 1.4.
   Enable the module.

   i2c_master_enable(&i2c_master_instance);
   

Create a variable to see when we should stop trying to send packet.

uint16_t timeout = 0;

Create a packet to send.

struct i2c_master_packet packet = {
    .address     = SLAVE_ADDRESS,
    .data_length = DATA_LENGTH,
    .data        = write_buffer,
    .ten_bit_address = false,
    .high_speed      = false,
    .hs_master_code  = 0x0,
};