SourceVu will show references to sdmmc_host_do_transaction() from the following samples and libraries:
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sdmmc_host_do_transaction() function
Send command to the card and get response This function returns when command is sent and response is received, or data is transferred, or timeout occurs. @attention Data buffer passed in cmdinfo->data must be in DMA capable memory and aligned to 4 byte boundary. If it's behind the cache, both cmdinfo->data and cmdinfo->buflen need to be aligned to cache line boundary.
Syntax
Implemented in ![]()
sdmmc_transaction.c:119
Return value
- ESP_OK on success - ESP_ERR_TIMEOUT if response or data transfer has timed out - ESP_ERR_INVALID_CRC if response or data transfer CRC check has failed - ESP_ERR_INVALID_RESPONSE if the card has sent an invalid response - ESP_ERR_INVALID_SIZE if the size of data transfer is not valid in SD protocol - ESP_ERR_INVALID_ARG if the data buffer is not in DMA capable memory
Notes
This function is not thread safe w.r.t. init/deinit functions, and bus width/clock speed configuration functions. Multiple tasks can call sdmmc_host_do_transaction as long as other sdmmc_host_* functions are not called.