/* Wait for the card to be ready for data transfers */
uint32_t status = 0;
- while (!host_is_spi(card) && !(status & MMC_R1_READY_FOR_DATA)) {
+ while (!is_spi && !(status & MMC_R1_READY_FOR_DATA)) {
// TODO: add some timeout here
uint32_t count = 0;
err = sdmmc_send_cmd_send_status(card, &status);
* clock rate which both host and the card support, and switch to it.
*/
bool freq_switched = false;
- if (config->max_freq_khz >= SDMMC_FREQ_HIGHSPEED) {
+ if (config->max_freq_khz >= SDMMC_FREQ_HIGHSPEED &&
+ !is_spi /* SPI doesn't support >26MHz in some cases */) {
/* This will determine if the card supports SWITCH_FUNC command,
* and high speed mode. If the cards supports both, this will enable
* high speed mode at the card side.
TEST_CASE("can write and read back blocks(using SPI)", "[sdspi][test_env=UT_T1_SPIMODE]")
{
sdmmc_host_t config = SDSPI_HOST_DEFAULT();
- config.max_freq_khz = SDMMC_FREQ_HIGHSPEED;
sdspi_slot_config_t slot_config = SDSPI_SLOT_CONFIG_DEFAULT();
TEST_ESP_OK(sdspi_host_init());
TEST_ESP_OK(sdspi_host_init_slot(config.slot, &slot_config));
SD SPI driver APIs are very similar to SDMMC host APIs. As with the SDMMC host driver, only ``sdspi_host_init``, ``sdspi_host_init_slot``, and ``sdspi_host_deinit`` functions are normally used by the applications. Other functions are called by the protocol level driver via function pointers in ``sdmmc_host_t`` structure.
+.. note:
+
+ SD over SPI does not support speeds above SDMMC_FREQ_DEFAULT due to a limitation of SPI driver.
+
+
.. doxygenfunction:: sdspi_host_init
.. doxygendefine:: SDSPI_HOST_DEFAULT