Function mmcsd_sd_init_card

components/drivers/sdio/dev_sd.c:657–811

}

static rt_int32_t mmcsd_sd_init_card(struct rt_mmcsd_host *host,
                                     rt_uint32_t           ocr)
{
    struct rt_mmcsd_card *card;
    rt_int32_t err;
    rt_uint32_t resp[4];
    rt_uint32_t max_data_rate;

    mmcsd_go_idle(host);

    /*
     * If SD_SEND_IF_COND indicates an SD 2.0
     * compliant card and we should set bit 30
     * of the ocr to indicate that we can handle
     * block-addressed SDHC cards.
     */
    err = mmcsd_send_if_cond(host, ocr);
    if (!err)
        ocr |= 1 << 30;

    /* Switch to UHS voltage if both Host and the Card support this feature */
    if (((host->valid_ocr & VDD_165_195) != 0) && (host->ops->switch_uhs_voltage != RT_NULL))
    {
        ocr |= OCR_S18R;
    }
    err = mmcsd_send_app_op_cond(host, ocr, &ocr);
    if (err)
        goto err2;

    /* Select voltage */
    if (ocr & OCR_S18R)
    {
        ocr = VDD_165_195;
        err = sd_switch_voltage(host);
        if (err)
           goto err2;
        err = sd_switch_uhs_voltage(host);
        if (err)
            goto err2;
    }

    if (controller_is_spi(host))
        err = mmcsd_get_cid(host, resp);
    else
        err = mmcsd_all_get_cid(host, resp);
    if (err)
        goto err2;

    card = rt_malloc(sizeof(struct rt_mmcsd_card));
    if (!card)
    {
        LOG_E("malloc card failed!");
        err = -RT_ENOMEM;
        goto err2;
    }
    rt_memset(card, 0, sizeof(struct rt_mmcsd_card));

    card->card_type = CARD_TYPE_SD;