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https://github.com/espressif/esp-idf.git
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6383fd550a
According to the application note in SD Card Physical Specification: > The host shall set ACMD41 timeout more than 1 second to abort repeat of issuing ACMD41 when the card does not indicate ready. The timeout count starts from the first ACMD41 which is set voltage window in the argument. Previously, the timeout was exactly one second, and this caused certain larger-capacity cards to "time out", because they couldn't finish initialization process in time.
139 lines
6.3 KiB
C
139 lines
6.3 KiB
C
/*
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* Copyright (c) 2006 Uwe Stuehler <uwe@openbsd.org>
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* Adaptations to ESP-IDF Copyright (c) 2016-2018 Espressif Systems (Shanghai) PTE LTD
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#pragma once
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#include <string.h>
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#include "esp_log.h"
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#include "esp_heap_caps.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "driver/sdmmc_defs.h"
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#include "driver/sdmmc_types.h"
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#include "sdmmc_cmd.h"
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#include "sys/param.h"
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#include "soc/soc_memory_layout.h"
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#define SDMMC_GO_IDLE_DELAY_MS 20
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#define SDMMC_IO_SEND_OP_COND_DELAY_MS 10
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/* These delay values are mostly useful for cases when CD pin is not used, and
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* the card is removed. In this case, SDMMC peripheral may not always return
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* CMD_DONE / DATA_DONE interrupts after signaling the error. These timeouts work
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* as a safety net in such cases.
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*/
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#define SDMMC_DEFAULT_CMD_TIMEOUT_MS 1000 // Max timeout of ordinary commands
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#define SDMMC_WRITE_CMD_TIMEOUT_MS 5000 // Max timeout of write commands
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/* Maximum retry/error count for SEND_OP_COND (CMD1).
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* These are somewhat arbitrary, values originate from OpenBSD driver.
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*/
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#define SDMMC_SEND_OP_COND_MAX_RETRIES 300
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#define SDMMC_SEND_OP_COND_MAX_ERRORS 3
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/* Functions to send individual commands */
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esp_err_t sdmmc_send_cmd(sdmmc_card_t* card, sdmmc_command_t* cmd);
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esp_err_t sdmmc_send_app_cmd(sdmmc_card_t* card, sdmmc_command_t* cmd);
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esp_err_t sdmmc_send_cmd_go_idle_state(sdmmc_card_t* card);
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esp_err_t sdmmc_send_cmd_send_if_cond(sdmmc_card_t* card, uint32_t ocr);
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esp_err_t sdmmc_send_cmd_send_op_cond(sdmmc_card_t* card, uint32_t ocr, uint32_t *ocrp);
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esp_err_t sdmmc_send_cmd_read_ocr(sdmmc_card_t *card, uint32_t *ocrp);
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esp_err_t sdmmc_send_cmd_send_cid(sdmmc_card_t *card, sdmmc_cid_t *out_cid);
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esp_err_t sdmmc_send_cmd_all_send_cid(sdmmc_card_t* card, sdmmc_response_t* out_raw_cid);
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esp_err_t sdmmc_send_cmd_set_relative_addr(sdmmc_card_t* card, uint16_t* out_rca);
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esp_err_t sdmmc_send_cmd_set_blocklen(sdmmc_card_t* card, sdmmc_csd_t* csd);
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esp_err_t sdmmc_send_cmd_switch_func(sdmmc_card_t* card,
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uint32_t mode, uint32_t group, uint32_t function,
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sdmmc_switch_func_rsp_t* resp);
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esp_err_t sdmmc_send_cmd_send_csd(sdmmc_card_t* card, sdmmc_csd_t* out_csd);
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esp_err_t sdmmc_send_cmd_select_card(sdmmc_card_t* card, uint32_t rca);
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esp_err_t sdmmc_send_cmd_send_scr(sdmmc_card_t* card, sdmmc_scr_t *out_scr);
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esp_err_t sdmmc_send_cmd_set_bus_width(sdmmc_card_t* card, int width);
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esp_err_t sdmmc_send_cmd_send_status(sdmmc_card_t* card, uint32_t* out_status);
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esp_err_t sdmmc_send_cmd_crc_on_off(sdmmc_card_t* card, bool crc_enable);
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/* Higher level functions */
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esp_err_t sdmmc_enable_hs_mode(sdmmc_card_t* card);
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esp_err_t sdmmc_enable_hs_mode_and_check(sdmmc_card_t* card);
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esp_err_t sdmmc_write_sectors_dma(sdmmc_card_t* card, const void* src,
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size_t start_block, size_t block_count);
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esp_err_t sdmmc_read_sectors_dma(sdmmc_card_t* card, void* dst,
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size_t start_block, size_t block_count);
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/* SD specific */
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esp_err_t sdmmc_check_scr(sdmmc_card_t* card);
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esp_err_t sdmmc_decode_cid(sdmmc_response_t resp, sdmmc_cid_t* out_cid);
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esp_err_t sdmmc_decode_csd(sdmmc_response_t response, sdmmc_csd_t* out_csd);
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esp_err_t sdmmc_decode_scr(uint32_t *raw_scr, sdmmc_scr_t* out_scr);
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/* SDIO specific */
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esp_err_t sdmmc_io_reset(sdmmc_card_t* card);
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esp_err_t sdmmc_io_enable_hs_mode(sdmmc_card_t* card);
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esp_err_t sdmmc_io_send_op_cond(sdmmc_card_t* card, uint32_t ocr, uint32_t *ocrp);
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esp_err_t sdmmc_io_rw_direct(sdmmc_card_t* card, int function,
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uint32_t reg, uint32_t arg, uint8_t *byte);
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esp_err_t sdmmc_io_rw_extended(sdmmc_card_t* card, int function,
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uint32_t reg, int arg, void *data, size_t size);
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/* MMC specific */
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esp_err_t sdmmc_mmc_send_ext_csd_data(sdmmc_card_t* card, void *out_data, size_t datalen);
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esp_err_t sdmmc_mmc_switch(sdmmc_card_t* card, uint8_t set, uint8_t index, uint8_t value);
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esp_err_t sdmmc_mmc_decode_cid(int mmc_ver, sdmmc_response_t resp, sdmmc_cid_t* out_cid);
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esp_err_t sdmmc_mmc_decode_csd(sdmmc_response_t response, sdmmc_csd_t* out_csd);
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esp_err_t sdmmc_mmc_enable_hs_mode(sdmmc_card_t* card);
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/* Parts of card initialization flow */
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esp_err_t sdmmc_init_sd_if_cond(sdmmc_card_t* card);
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esp_err_t sdmmc_init_select_card(sdmmc_card_t* card);
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esp_err_t sdmmc_init_csd(sdmmc_card_t* card);
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esp_err_t sdmmc_init_cid(sdmmc_card_t* card);
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esp_err_t sdmmc_init_rca(sdmmc_card_t* card);
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esp_err_t sdmmc_init_mmc_decode_cid(sdmmc_card_t* card);
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esp_err_t sdmmc_init_ocr(sdmmc_card_t* card);
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esp_err_t sdmmc_init_spi_crc(sdmmc_card_t* card);
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esp_err_t sdmmc_init_io(sdmmc_card_t* card);
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esp_err_t sdmmc_init_sd_blocklen(sdmmc_card_t* card);
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esp_err_t sdmmc_init_sd_scr(sdmmc_card_t* card);
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esp_err_t sdmmc_init_sd_wait_data_ready(sdmmc_card_t* card);
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esp_err_t sdmmc_init_mmc_read_ext_csd(sdmmc_card_t* card);
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esp_err_t sdmmc_init_mmc_read_cid(sdmmc_card_t* card);
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esp_err_t sdmmc_init_host_bus_width(sdmmc_card_t* card);
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esp_err_t sdmmc_init_sd_bus_width(sdmmc_card_t* card);
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esp_err_t sdmmc_init_io_bus_width(sdmmc_card_t* card);
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esp_err_t sdmmc_init_mmc_bus_width(sdmmc_card_t* card);
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esp_err_t sdmmc_init_card_hs_mode(sdmmc_card_t* card);
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esp_err_t sdmmc_init_host_frequency(sdmmc_card_t* card);
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esp_err_t sdmmc_init_mmc_check_csd(sdmmc_card_t* card);
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/* Various helper functions */
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static inline bool host_is_spi(const sdmmc_card_t* card)
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{
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return (card->host.flags & SDMMC_HOST_FLAG_SPI) != 0;
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}
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static inline uint32_t get_host_ocr(float voltage)
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{
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// TODO: report exact voltage to the card
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// For now tell that the host has 2.8-3.6V voltage range
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(void) voltage;
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return SD_OCR_VOL_MASK;
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}
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void sdmmc_flip_byte_order(uint32_t* response, size_t size);
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esp_err_t sdmmc_fix_host_flags(sdmmc_card_t* card);
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