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Merge branch 'fixbug/sdmmc_spi_highspeed_v4.2' into 'release/v4.2'

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sdmmc: fix the probe issue that forbid sdspi working in highspeed mode(backport v4.2)

See merge request espressif/esp-idf!9841
This commit is contained in:
Michael (XIAO Xufeng) 2020-08-04 17:45:37 +08:00
commit 789119262b
2 changed files with 18 additions and 11 deletions
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27
components/sdmmc/sdmmc_sd.c
View File

@ -225,24 +225,29 @@ esp_err_t sdmmc_enable_hs_mode_and_check(sdmmc_card_t* card)
/* HS mode has been enabled on the card.
* Read CSD again, it should now indicate that the card supports
* 50MHz clock.
* Since SEND_CSD is allowed only in standby mode, and the card is
* currently in data transfer more, deselect the card first, then
* get the CSD, then select the card again.
* Since SEND_CSD is allowed only in standby mode, and the card is currently in data transfer
* mode, deselect the card first, then get the CSD, then select the card again. This step is
* not required in SPI mode, since CMD7 (select_card) is not supported.
*/
err = sdmmc_send_cmd_select_card(card, 0);
if (err != ESP_OK) {
ESP_LOGE(TAG, "%s: select_card (1) returned 0x%x", __func__, err);
return err;
const bool is_spi = host_is_spi(card);
if (!is_spi) {
err = sdmmc_send_cmd_select_card(card, 0);
if (err != ESP_OK) {
ESP_LOGE(TAG, "%s: select_card (1) returned 0x%x", __func__, err);
return err;
}
}
err = sdmmc_send_cmd_send_csd(card, &card->csd);
if (err != ESP_OK) {
ESP_LOGE(TAG, "%s: send_csd returned 0x%x", __func__, err);
return err;
}
err = sdmmc_send_cmd_select_card(card, card->rca);
if (err != ESP_OK) {
ESP_LOGE(TAG, "%s: select_card (2) returned 0x%x", __func__, err);
return err;
if (!is_spi) {
err = sdmmc_send_cmd_select_card(card, card->rca);
if (err != ESP_OK) {
ESP_LOGE(TAG, "%s: select_card (2) returned 0x%x", __func__, err);
return err;
}
}
if (card->csd.tr_speed != 50000000) {

2
components/sdmmc/test/test_sd.c
View File

@ -388,6 +388,8 @@ TEST_CASE("SDMMC read/write test (SD slot 1, in SPI mode)", "[sdspi][test_env=UT
sdmmc_host_t config = SDSPI_HOST_DEFAULT();
config.slot = handle;
// This test can only run under 20MHz on ESP32, because the runner connects the card to
// non-IOMUX pins of HSPI.
sdmmc_card_t* card = malloc(sizeof(sdmmc_card_t));
TEST_ASSERT_NOT_NULL(card);