一、SDIO接口 SDIO 就是 SD 的 I/O 接口的意思;用来解决和模块间的高速通信问题,常见于嵌入式系统。速度可达到 25Mbps 在说SDIO过程中,往往还涉及到 MMC跟 SD,以至于它们以 MMC/SD/SDIO方式出现 MMC、SD、SDIO的技术本质是一样的(使用相同的总线规范,等等),都是从MMC规范演化而来; MMC强调的是多媒体存储(...
1.在这里一方面处理中断 还有2 switch(type) { //处理cmd data event的请求 caseMVMS_CMD: ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk – 4); //处理申请的命令中断 if(ret) gotoout; break; caseMVMS_DAT: ret = if_sdio_handle_data(card, card->buffer + 4, chunk – 4);/...
{ switch(SDCardInfo.CardType) { case SDIO_STD_CAPACITY_SD_CARD_V1_1: printf("Card Type:SDSC V1.1\r\n"); break; case SDIO_STD_CAPACITY_SD_CARD_V2_0: printf("Card Type:SDSC V2.0\r\n"); break; case SDIO_HIGH_CAPACITY_SD_CARD: printf("Card Type:SDHC V2.0\r\n"); break; ca...
switch(SDCardInfo.CardType) { case SDIO_STD_CAPACITY_SD_CARD_V1_1: printf("Card Type:SDSC V1.1rn"); break; case SDIO_STD_CAPACITY_SD_CARD_V2_0: printf("Card Type:SDSC V2.0rn"); break; case SDIO_HIGH_CAPACITY_SD_CARD: printf("Card Type:SDHC V2.0rn"); break; case SDIO_MULTIME...
switch (type) { case MVMS_CMD: ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4); case MVMS_DAT: ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4); case MVMS_EVENT: ret = if_sdio_handle_event(card, card->buffer + 4, chunk - 4); ...
switch (type) { case MVMS_CMD: ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4); case MVMS_DAT: ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4); case MVMS_EVENT: ret = if_sdio_handle_event(card, card->buffer + 4, chunk - 4); ...
switch(SDCardInfo.CardType) { case SDIO_STD_CAPACITY_SD_CARD_V1_1: printf("Card Type:SDSC V1.1rn"); break; case SDIO_STD_CAPACITY_SD_CARD_V2_0: printf("Card Type:SDSC V2.0rn"); break; case SDIO_HIGH_CAPACITY_SD_CARD: printf("Card Type:SDHC V2.0rn"); ...
err = mmcsd_switch(card); /发送CMD6指令,切换卡访问速率由默认的12.5MB/Sec为25MB/Sec高速接口/ if (err) goto err1; /set bus speed/ max_data_rate = (unsigned int)-1; if (card->flags & CARD_FLAG_HIGHSPEED) { if (max_data_rate > card->hs_max_data_rate) ...
switch (type) { //处理cmd data event的请求 case MVMS_CMD: ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4); //处理申请的命令中断 if (ret) goto out; break; case MVMS_DAT: ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4);//处理申请的数据中断 ...
switch (pdata->max_width) { case 8: host->mmc->caps |= MMC_CAP_8_BIT_DATA; /* Fall through */ case 4: host->mmc->caps |= MMC_CAP_4_BIT_DATA; break; } if (pdata->pm_caps) host->mmc->pm_caps |= pdata->pm_caps; ...