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sdmmc: introduce is_app_cmd flag, check it along with opcode

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‘make_hw_cmd’ function checks opcodes in a few cases. Comparing opcode
does not tell the whole story, because for some SD commands there is are
APP commands with the same opcodes. This change introduces a flag which
indicates whether the next command is going to be an APP command.
The check for APP_SET_BUS_WIDTH command is updated to use this flag.
This fixes a bug with an unexpected STOP_TRANSMISSION command sent after
SWITCH_FUNC command, which has opcode 6, same as APP_SET_BUS_WIDTH.
This commit is contained in:
Ivan Grokhotkov 2017-07-12 21:04:54 +08:00
parent e6258ac6cb
commit f908425b13
1 changed files with 4 additions and 1 deletions
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5
components/driver/sdmmc_transaction.c
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@ -73,6 +73,7 @@ const uint32_t SDMMC_CMD_ERR_MASK =
static sdmmc_desc_t s_dma_desc[SDMMC_DMA_DESC_CNT];
static sdmmc_transfer_state_t s_cur_transfer = { 0 };
static QueueHandle_t s_request_mutex;
static bool s_is_app_cmd; // This flag is set if the next command is an APP command
static esp_err_t handle_idle_state_events();
static sdmmc_hw_cmd_t make_hw_cmd(sdmmc_command_t* cmd);
@ -88,6 +89,7 @@ esp_err_t sdmmc_host_transaction_handler_init()
if (!s_request_mutex) {
return ESP_ERR_NO_MEM;
}
s_is_app_cmd = false;
return ESP_OK;
}
@ -145,6 +147,7 @@ esp_err_t sdmmc_host_do_transaction(int slot, sdmmc_command_t* cmdinfo)
break;
}
}
s_is_app_cmd = (ret == ESP_OK && cmdinfo->opcode == MMC_APP_CMD);
xSemaphoreGive(s_request_mutex);
return ret;
}
@ -228,7 +231,7 @@ static sdmmc_hw_cmd_t make_hw_cmd(sdmmc_command_t* cmd)
} else {
res.wait_complete = 1;
}
if (cmd->opcode == SD_APP_SET_BUS_WIDTH) {
if (s_is_app_cmd && cmd->opcode == SD_APP_SET_BUS_WIDTH) {
res.send_auto_stop = 1;
res.data_expected = 1;
}