Function mmcsd_get_scr

components/drivers/sdio/dev_sd.c:538–578

    (((rt_uint32_t)(x) & (rt_uint32_t)0xff000000UL) >> 24)))

rt_int32_t mmcsd_get_scr(struct rt_mmcsd_card *card, rt_uint32_t *scr)
{
    rt_int32_t err;
    struct rt_mmcsd_req req;
    struct rt_mmcsd_cmd cmd;
    struct rt_mmcsd_data data;

    err = mmcsd_app_cmd(card->host, card);
    if (err)
        return err;

    rt_memset(&req, 0, sizeof(struct rt_mmcsd_req));
    rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd));
    rt_memset(&data, 0, sizeof(struct rt_mmcsd_data));

    req.cmd = &cmd;
    req.data = &data;

    cmd.cmd_code = SD_APP_SEND_SCR;
    cmd.arg = 0;
    cmd.flags = RESP_SPI_R1 | RESP_R1 | CMD_ADTC;

    data.blksize = 8;
    data.blks = 1;
    data.flags = DATA_DIR_READ;
    data.buf = scr;

    mmcsd_set_data_timeout(&data, card);

    mmcsd_send_request(card->host, &req);

    if (cmd.err)
        return cmd.err;
    if (data.err)
        return data.err;

    scr[0] = be32_to_cpu(scr[0]);
    scr[1] = be32_to_cpu(scr[1]);

    return 0;
}

static rt_err_t mmcsd_read_sd_status(struct rt_mmcsd_card *card, rt_uint32_t *sd_status)
{