Commit Graph

3 Commits

Author SHA1 Message Date
Ivan Grokhotkov
c6829fa5b8 sdmmc: improve error handling during SPI mode init
- In SPI mode, the card will respond to the initial SDIO reset (done
using CMD52) with “invalid command” error. Handle this correctly.

- sdmmc_card_init had a hack where GO_IDLE_STATE (CMD0) command was
sent twice. Add explanation why this is done, and don’t expect
correct response from the card on first CMD0.

- improve logs printed at debug level by adding CMD index
2018-04-11 11:11:17 +08:00
Ivan Grokhotkov
269486ca4d sdspi: use response timeout passed from upper layer
Previously SDSPI host driver would rely on retry count when waiting for
the card to read or write data. This caused different timeout times
depending on CPU frequency and card clock frequency. In practice, card
performance does not depend on these two factors.
This change uses timeout_ms field of sdmmc_command_t introduced
previously for SDMMC host.

Fixes https://esp32.com/viewtopic.php?f=2&t=3440&p=16037 and similar
issues related to SDSPI timeouts.
2017-12-11 11:07:08 +08:00
Dmitry Yakovlev
e5bb45f381 driver: SD protocol driver for SPI peripheral 2017-07-20 13:43:07 +08:00