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Merge pull request #4048 from janderit/fix_3763_mimxrt10xx_spi

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fixes: busio, SPI OS error 5 for mimxrt10xx
This commit is contained in:
Scott Shawcroft 2021-02-08 16:29:48 -08:00 committed by GitHub
commit 0ceac79dfb
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 20 additions and 3 deletions
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23
ports/mimxrt10xx/common-hal/busio/SPI.c
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@ -38,6 +38,8 @@
#define LPSPI_MASTER_CLK_FREQ (CLOCK_GetFreq(kCLOCK_Usb1PllPfd0Clk) / (CLOCK_GetDiv(kCLOCK_LpspiDiv) + 1))
#define MAX_SPI_BUSY_RETRIES 100
//arrays use 0 based numbering: SPI1 is stored at index 0
#define MAX_SPI 4
STATIC bool reserved_spi[MAX_SPI];
@ -289,7 +291,12 @@ bool common_hal_busio_spi_write(busio_spi_obj_t *self,
xfer.dataSize = len;
xfer.configFlags = kLPSPI_MasterPcs0;
const status_t status = LPSPI_MasterTransferBlocking(self->spi, &xfer);
status_t status;
int retries = MAX_SPI_BUSY_RETRIES;
do {
status = LPSPI_MasterTransferBlocking(self->spi, &xfer);
} while (status == kStatus_LPSPI_Busy && --retries > 0);
if (status != kStatus_Success)
printf("%s: status %ld\r\n", __func__, status);
@ -311,7 +318,12 @@ bool common_hal_busio_spi_read(busio_spi_obj_t *self,
xfer.rxData = data;
xfer.dataSize = len;
const status_t status = LPSPI_MasterTransferBlocking(self->spi, &xfer);
status_t status;
int retries = MAX_SPI_BUSY_RETRIES;
do {
status = LPSPI_MasterTransferBlocking(self->spi, &xfer);
} while (status == kStatus_LPSPI_Busy && --retries > 0);
if (status != kStatus_Success)
printf("%s: status %ld\r\n", __func__, status);
@ -333,7 +345,12 @@ bool common_hal_busio_spi_transfer(busio_spi_obj_t *self, const uint8_t *data_ou
xfer.rxData = data_in;
xfer.dataSize = len;
const status_t status = LPSPI_MasterTransferBlocking(self->spi, &xfer);
status_t status;
int retries = MAX_SPI_BUSY_RETRIES;
do {
status = LPSPI_MasterTransferBlocking(self->spi, &xfer);
} while (status == kStatus_LPSPI_Busy && --retries > 0);
if (status != kStatus_Success)
printf("%s: status %ld\r\n", __func__, status);