SDIO Usage Example

#include "hdf_log.h"
#include "sdio_if.h"

#define TEST_FUNC_NUM 1 /* The I/O function whose ID is 1 is used. */
#define TEST_FBR_BASE_ADDR 0x100 /* FBR base address of the I/O function whose ID is 1 */
#define TEST_ADDR_OFFSET 9 /* Address offset of the register to read or write */
#define TEST_DATA_LEN 3 /* Length of the data to read or write */
#define TEST_BLOCKSIZE 2 /* Size of a data block, in bytes */

/* Implement the SDIO IRQ function based on the application. */
static void SdioIrqFunc(void *data)
{
    if (data == NULL) {
        HDF_LOGE("SdioIrqFunc: data is NULL.\n");
        return;
    }
    /* You need to add specific implementations. */
}

void SdioTestSample(void)
{
    int32_t ret;  
    DevHandle handle = NULL;
    uint8_t data[TEST_DATA_LEN] = {0};
    int16_t busNum = 1;
    uint8_t val;
    uint32_t addr;
    
    /* Open an SDIO controller whose bus number is 1. */
    handle = SdioOpen(busNum);
    if (handle == NULL) {
        HDF_LOGE("SdioOpen: failed!\n");
        return;
    }
   /* Claim a host exclusively. */
    SdioClaimHost(handle);
   /* Enable the SDIO device. */
    ret = SdioEnableFunc(handle);
    if (ret != 0) {
        HDF_LOGE("SdioEnableFunc: failed, ret %d\n", ret);
        goto ENABLE_ERR;
    }
   /* Claim an SDIO IRQ. */
    ret = SdioClaimIrq(handle, SdioIrqFunc);
    if (ret != 0) {
        HDF_LOGE("SdioClaimIrq: failed, ret %d\n", ret);
        goto CLAIM_IRQ_ERR;
    }
    /* Set the block size to 2 bytes. */
    ret = SdioSetBlockSize(handle, TEST_BLOCKSIZE);
    if (ret != 0) {
        HDF_LOGE("SdioSetBlockSize: failed, ret %d\n", ret);
        goto COMM_ERR;
    }
    /* Read 3-byte data from the incremental address of an SDIO device. */
    addr = TEST_FBR_BASE_ADDR * TEST_FUNC_NUM + TEST_ADDR_OFFSET;
    ret = SdioReadBytes(handle, data, addr, TEST_DATA_LEN, 0);
    if (ret != 0) {
        HDF_LOGE("SdioReadBytes: failed, ret %d\n", ret);
        goto COMM_ERR;
    }
    /* Write 3-byte data into the incremental address of an SDIO device. */
    ret = SdioWriteBytes(handle, data, addr, TEST_DATA_LEN, 0);
    if (ret != 0) {
        HDF_LOGE("SdioWriteBytes: failed, ret %d\n", ret);
        goto COMM_ERR;
    }
    /* Read 1-byte data from the SDIO device. */
    ret = SdioReadBytes(handle, &val, addr, 1, 0);
    if (ret != 0) {
        HDF_LOGE("SdioReadBytes: failed, ret %d\n", ret);
        goto COMM_ERR;
    }
    /* Write 1-byte data into the SDIO device. */
    ret = SdioWriteBytes(handle, &val, addr, 1, 0);
    if (ret != 0) {
        HDF_LOGE("SdioWriteBytes: failed, ret %d\n", ret);
        goto COMM_ERR;
    }
    /* Read 3-byte data from the fixed address of an SDIO device. */
    ret = SdioReadBytesFromFixedAddr(handle, data, addr, TEST_DATA_LEN, 0);
    if (ret != 0) {
        HDF_LOGE("SdioReadBytesFromFixedAddr: failed, ret %d\n", ret);
        goto COMM_ERR;
    }
    /* Write 1-byte data to the fixed address of an SDIO device. */
    ret = SdioWriteBytesToFixedAddr(handle, data, addr, 1, 0);
    if (ret != 0) {
        HDF_LOGE("SdioWriteBytesToFixedAddr: failed, ret %d\n", ret);
        goto COMM_ERR;
    }
    /* Read 1-byte data from SDIO function 0. */
    addr = 0x02;
    ret = SdioReadBytesFromFunc0(handle, &val, addr, 1, 0);
    if (ret != 0) {
        HDF_LOGE("SdioReadBytesFromFunc0: failed, ret %d\n", ret);
        goto COMM_ERR;
    }
    /* Write 1-byte data into SDIO function 0. */
    ret = SdioWriteBytesToFunc0(handle, &val, addr, 1, 0);
    if (ret != 0) {
        HDF_LOGE("SdioWriteBytesToFunc0: failed, ret %d\n", ret);
        goto COMM_ERR;
    }
COMM_ERR:
    /* Release the SDIO IRQ. */
    ret = SdioReleaseIrq(handle);
    if (ret != 0) {
        HDF_LOGE("SdioReleaseIrq: failed, ret %d\n", ret);
    }
CLAIM_IRQ_ERR:
    /* Disable the SDIO device. */
    ret = SdioDisableFunc(handle);
    if (ret != 0) {
        HDF_LOGE("SdioDisableFunc: failed, ret %d\n", ret);
    }
ENABLE_ERR:
    /* Release the exclusively claimed host. */
    SdioReleaseHost(handle);
    /* Close an SDIO controller. */
    SdioClose(handle); 
}