kopia lustrzana https://github.com/espressif/esp-idf
Merge branch 'bugfix/sdspi_delayed_write_response' into 'master'
sdspi: handle delayed response to data write command See merge request idf/esp-idf!2290pull/1880/merge
commit
31d53bc059
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@ -67,6 +67,8 @@ static esp_err_t start_command_write_blocks(int slot, sdspi_hw_cmd_t *cmd,
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static esp_err_t start_command_default(int slot, int flags, sdspi_hw_cmd_t *cmd);
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static esp_err_t poll_cmd_response(int slot, sdspi_hw_cmd_t *cmd);
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/// A few helper functions
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/// Set CS high for given slot
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@ -429,32 +431,21 @@ static esp_err_t start_command_default(int slot, int flags, sdspi_hw_cmd_t *cmd)
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/* response is a stuff byte from previous transfer, ignore it */
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cmd->r1 = 0xff;
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}
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if (ret != ESP_OK) {
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ESP_LOGD(TAG, "%s: spi_device_transmit returned 0x%x", __func__, ret);
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return ret;
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}
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if (flags & SDSPI_CMD_FLAG_NORSP) {
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/* no (correct) response expected from the card, so skip polling loop */
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ESP_LOGV(TAG, "%s: ignoring response byte", __func__);
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cmd->r1 = 0x00;
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}
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int response_delay_bytes = SDSPI_RESPONSE_MAX_DELAY;
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while ((cmd->r1 & SD_SPI_R1_NO_RESPONSE) != 0 && response_delay_bytes-- > 0) {
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spi_transaction_t* t = get_transaction(slot);
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*t = (spi_transaction_t) {
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.flags = SPI_TRANS_USE_RXDATA | SPI_TRANS_USE_TXDATA,
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.length = 8,
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};
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t->tx_data[0] = 0xff;
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ret = spi_device_transmit(spi_handle(slot), t);
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uint8_t r1 = t->rx_data[0];
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release_transaction(slot);
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if (ret != ESP_OK) {
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return ret;
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}
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cmd->r1 = r1;
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ret = poll_cmd_response(slot, cmd);
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if (ret != ESP_OK) {
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ESP_LOGD(TAG, "%s: poll_cmd_response returned 0x%x", __func__, ret);
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return ret;
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}
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if (cmd->r1 & SD_SPI_R1_NO_RESPONSE) {
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ESP_LOGD(TAG, "%s: no response token found", __func__);
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return ESP_ERR_TIMEOUT;
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}
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return ret;
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return ESP_OK;
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}
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// Wait until MISO goes high
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@ -563,6 +554,30 @@ static esp_err_t poll_data_token(int slot, spi_transaction_t* t,
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return ESP_ERR_TIMEOUT;
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}
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static esp_err_t poll_cmd_response(int slot, sdspi_hw_cmd_t *cmd)
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{
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int response_delay_bytes = SDSPI_RESPONSE_MAX_DELAY;
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while ((cmd->r1 & SD_SPI_R1_NO_RESPONSE) != 0 && response_delay_bytes-- > 0) {
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spi_transaction_t* t = get_transaction(slot);
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*t = (spi_transaction_t) {
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.flags = SPI_TRANS_USE_RXDATA | SPI_TRANS_USE_TXDATA,
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.length = 8,
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};
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t->tx_data[0] = 0xff;
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esp_err_t ret = spi_device_transmit(spi_handle(slot), t);
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uint8_t r1 = t->rx_data[0];
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release_transaction(slot);
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if (ret != ESP_OK) {
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return ret;
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}
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cmd->r1 = r1;
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}
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if (cmd->r1 & SD_SPI_R1_NO_RESPONSE) {
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return ESP_ERR_TIMEOUT;
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}
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return ESP_OK;
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}
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/**
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* Receiving one or more blocks of data happens as follows:
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@ -759,9 +774,17 @@ static esp_err_t start_command_write_blocks(int slot, sdspi_hw_cmd_t *cmd,
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if (ret != ESP_OK) {
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return ret;
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}
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wait_for_transactions(slot);
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// Poll for command response which may be delayed up to 8 bytes
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ret = poll_cmd_response(slot, cmd);
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if (ret != ESP_OK) {
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ESP_LOGD(TAG, "%s: poll_cmd_response returned 0x%x", __func__, ret);
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return ret;
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}
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uint8_t start_token = tx_length <= SDSPI_MAX_DATA_LEN ?
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TOKEN_BLOCK_START : TOKEN_BLOCK_START_WRITE_MULTI;
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wait_for_transactions(slot);
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while (tx_length > 0) {
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@ -771,7 +794,7 @@ static esp_err_t start_command_write_blocks(int slot, sdspi_hw_cmd_t *cmd,
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.length = sizeof(start_token) * 8,
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.tx_buffer = &start_token
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};
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esp_err_t ret = spi_device_queue_trans(spi_handle(slot), t_start_token, 0);
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ret = spi_device_queue_trans(spi_handle(slot), t_start_token, 0);
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if (ret != ESP_OK) {
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return ret;
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}
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@ -816,12 +839,6 @@ static esp_err_t start_command_write_blocks(int slot, sdspi_hw_cmd_t *cmd,
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// Wait for data to be sent
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wait_for_transactions(slot);
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// Check if R1 response for the command was correct
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if (cmd->r1 != 0) {
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ESP_LOGD(TAG, "%s: invalid R1 response: 0x%02x", __func__, cmd->r1);
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return ESP_ERR_INVALID_RESPONSE;
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}
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// Poll for response
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spi_transaction_t* t_poll = get_transaction(slot);
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ret = poll_response_token(slot, t_poll, cmd->timeout_ms);
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@ -177,7 +177,7 @@ static void read_write_test(sdmmc_card_t* card)
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do_single_write_read_test(card, card->csd.capacity/2, 128, 1);
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}
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TEST_CASE("can write and read back blocks", "[sd][test_env=UT_T1_SDMODE][ignore]")
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TEST_CASE("can write and read back blocks", "[sd][test_env=UT_T1_SDMODE]")
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{
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sdmmc_host_t config = SDMMC_HOST_DEFAULT();
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config.max_freq_khz = SDMMC_FREQ_HIGHSPEED;
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@ -192,7 +192,7 @@ TEST_CASE("can write and read back blocks", "[sd][test_env=UT_T1_SDMODE][ignore]
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TEST_ESP_OK(sdmmc_host_deinit());
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}
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TEST_CASE("can write and read back blocks(using SPI)", "[sdspi][test_env=UT_T1_SPIMODE][ignore]")
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TEST_CASE("can write and read back blocks(using SPI)", "[sdspi][test_env=UT_T1_SPIMODE]")
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{
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sdmmc_host_t config = SDSPI_HOST_DEFAULT();
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sdspi_slot_config_t slot_config = SDSPI_SLOT_CONFIG_DEFAULT();
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@ -206,7 +206,7 @@ TEST_CASE("can write and read back blocks(using SPI)", "[sdspi][test_env=UT_T1_S
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TEST_ESP_OK(sdspi_host_deinit());
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}
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TEST_CASE("reads and writes with an unaligned buffer", "[sd][test_env=UT_T1_SDMODE][ignore]")
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TEST_CASE("reads and writes with an unaligned buffer", "[sd][test_env=UT_T1_SDMODE]")
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{
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sdmmc_host_t config = SDMMC_HOST_DEFAULT();
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sdmmc_slot_config_t slot_config = SDMMC_SLOT_CONFIG_DEFAULT();
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