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fix(sdspi): fix issues causing the sdspi driver to work low efficiently with DMA.

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This commit is contained in:
michael 2017-09-19 16:43:31 +08:00
parent 074f36afff
commit 1b91cb7be0
1 changed files with 11 additions and 12 deletions
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23
components/driver/sdspi_host.c
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@ -172,10 +172,11 @@ static void release_bus(int slot)
/// Clock out 80 cycles (10 bytes) before GO_IDLE command
static void go_idle_clockout(int slot)
{
uint8_t data[10];
//actually we need 10, declare 12 to meet requirement of RXDMA
uint8_t data[12];
memset(data, 0xff, sizeof(data));
spi_transaction_t t = {
.length = sizeof(data) * 8,
.length = 10*8,
.tx_buffer = data,
.rx_buffer = data,
};
@ -428,22 +429,21 @@ static esp_err_t start_command_default(int slot, int flags, sdspi_hw_cmd_t *cmd)
static esp_err_t poll_busy(int slot, spi_transaction_t* t)
{
uint8_t t_rx;
uint8_t rd_data;
*t = (spi_transaction_t) {
.tx_buffer = &t_rx,
.rx_buffer = &rd_data,
.flags = SPI_TRANS_USE_RXDATA, //data stored in rx_data
.length = 8,
};
esp_err_t ret;
for (int i = 0; i < SDSPI_RETRY_COUNT; i++) {
t_rx = SDSPI_MOSI_IDLE_VAL;
rd_data = 0;
t->rx_data[0] = 0;
ret = spi_device_transmit(spi_handle(slot), t);
if (ret != ESP_OK) {
return ret;
}
if (rd_data != 0) {
if (t->rx_data[0] != 0) {
if (i < SDSPI_RETRY_COUNT - 2) {
i = SDSPI_RETRY_COUNT - 2;
}
@ -456,28 +456,27 @@ static esp_err_t poll_busy(int slot, spi_transaction_t* t)
static esp_err_t poll_response_token(int slot, spi_transaction_t* t)
{
uint8_t t_rx;
uint8_t rd_data;
*t = (spi_transaction_t) {
.tx_buffer = &t_rx,
.rx_buffer = &rd_data,
.flags = SPI_TRANS_USE_RXDATA,
.length = 8,
};
esp_err_t ret;
for (int retry = 0; retry < SDSPI_RETRY_COUNT; retry++) {
t_rx = SDSPI_MOSI_IDLE_VAL;
rd_data = 0;
t->rx_data[0] = 0;
ret = spi_device_transmit(spi_handle(slot), t);
if (ret != ESP_OK) {
return ret;
}
if ((rd_data & TOKEN_RSP_MASK) == TOKEN_RSP_OK) {
if ((t->rx_data[0] & TOKEN_RSP_MASK) == TOKEN_RSP_OK) {
break;
}
if ((rd_data & TOKEN_RSP_MASK) == TOKEN_RSP_CRC_ERR) {
if ((t->rx_data[0] & TOKEN_RSP_MASK) == TOKEN_RSP_CRC_ERR) {
return ESP_ERR_INVALID_CRC;
}
if ((rd_data & TOKEN_RSP_MASK) == TOKEN_RSP_WRITE_ERR) {
if ((t->rx_data[0] & TOKEN_RSP_MASK) == TOKEN_RSP_WRITE_ERR) {
return ESP_ERR_INVALID_RESPONSE;
}
if (retry == SDSPI_RETRY_COUNT - 1) {