SPIFI Driver

SPIFI driver includes functional APIs.

Functional APIs are feature/property target low level APIs. Functional APIs can be used for SPIFI initialization/configuration/operation for optimization/customization purpose. Using the functional API requires the knowledge of the SPIFI peripheral and how to organize functional APIs to meet the application requirements. All functional API use the peripheral base address as the first parameter. SPIFI functional operation groups provide the functional API set.

Typical use case

SPIFI transfer using an polling method

#define PAGE_SIZE (256)
#define SECTOR_SIZE (4096)
/* Initialize SPIFI */
SPIFI_GetDefaultConfig(&config);
SPIFI_Init(EXAMPLE_SPIFI, &config, sourceClockFreq);

/* Set the buffer */
for (i = 0; i < PAGE_SIZE; i ++)
{
    g_buffer[i] = i;

}

/* Write enable */
SPIFI_SetCommand(EXAMPLE_SPIFI, &command[WRITE_ENABLE]);
/* Set address */
SPIFI_SetCommandAddress(EXAMPLE_SPIFI, FSL_FEATURE_SPIFI_START_ADDRESS);
/* Erase sector */
SPIFI_SetCommand(EXAMPLE_SPIFI, &command[ERASE_SECTOR]);
/* Check if finished */
check_if_finish();

/* Program page */

while (page < (SECTOR_SIZE/PAGE_SIZE))
{
    SPIFI_SetCommand(EXAMPLE_SPIFI, &command[WRITE_ENABLE]);
    SPIFI_SetCommandAddress(EXAMPLE_SPIFI, FSL_FEATURE_SPIFI_START_ADDRESS + page * PAGE_SIZE);
    SPIFI_SetCommand(EXAMPLE_SPIFI, &command[PROGRAM_PAGE]);
    for (i = 0; i < PAGE_SIZE; i += 4)
    {
        for (j = 0; j < 4; j ++)
        {
            data |= ((uint32_t)(g_buffer[i + j])) << (j * 8);
        }
        SPIFI_WriteData(EXAMPLE_SPIFI, data);
        data = 0;
    }
    page ++;
    check_if_finish();
}