diff --git a/components/drivers/sdio/dev_mmc.c b/components/drivers/sdio/dev_mmc.c index 2012d9e5297..8a09aa937df 100644 --- a/components/drivers/sdio/dev_mmc.c +++ b/components/drivers/sdio/dev_mmc.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2006-2024, RT-Thread Development Team + * Copyright (c) 2006-2026, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * @@ -270,6 +270,64 @@ static int mmc_parse_ext_csd(struct rt_mmcsd_card *card, rt_uint8_t *ext_csd) return 0; } +/* + * Send Status. + */ +static int mmc_send_status(struct rt_mmcsd_card *card, rt_uint32_t *status, unsigned retries) +{ + int err; + struct rt_mmcsd_cmd cmd = (struct rt_mmcsd_cmd){ 0 }; + + cmd.busy_timeout = 0; + cmd.cmd_code = SEND_STATUS; + cmd.arg = card->rca << 16; + cmd.flags = RESP_R1 | CMD_AC; + err = mmcsd_send_cmd(card->host, &cmd, retries); + if (err) + return err; + + if (status) + *status = cmd.resp[0]; + + return 0; +} + +/* + * Poll Busy. + */ +static int mmc_poll_for_busy(struct rt_mmcsd_card *card, rt_uint32_t timeout_ms, unsigned retries) +{ + int timeout = rt_tick_from_millisecond(timeout_ms); + int err = 0; + rt_uint32_t status; + rt_tick_t start; + + start = rt_tick_get(); + do + { + rt_bool_t out = (int)(rt_tick_get() - start) >= timeout; + + if (out) + { + LOG_E("wait card busy timeout"); + return -RT_ETIMEOUT; + } + + rt_thread_mdelay(1); + + err = mmc_send_status(card, &status, retries); + if (R1_STATUS(err)) + { + LOG_E("error %d requesting status", err); + return err; + } + } + while (!(status & R1_READY_FOR_DATA) || + (R1_CURRENT_STATE(status) == R1_STATE_PRG)); + + return err; +} + /** * mmc_switch - modify EXT_CSD register * @card: the MMC card associated with the data transfer @@ -295,6 +353,13 @@ static int mmc_switch(struct rt_mmcsd_card *card, rt_uint8_t set, if (err) return err; + /* + * Poll the card status using CMD13 with a timeout of 500ms and a polling interval of 1ms. + */ + err = mmc_poll_for_busy(card, 500, 3); + if (err) + return err; + return 0; } @@ -490,7 +555,7 @@ rt_err_t mmc_send_op_cond(struct rt_mmcsd_host *host, err = -RT_ETIMEOUT; - rt_thread_mdelay(10); //delay 10ms + rt_thread_mdelay(10); /* delay 10ms */ } if (rocr && !controller_is_spi(host)) @@ -815,3 +880,4 @@ rt_int32_t init_mmc(struct rt_mmcsd_host *host, rt_uint32_t ocr) return err; } +