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adds: maximum retries on SPI busy

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This commit is contained in:
Philip Jander 2021-02-07 17:06:46 +01:00
parent ae91b12aea
commit 5bf08c503b
1 changed files with 8 additions and 3 deletions
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11
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];
@ -290,9 +292,10 @@ bool common_hal_busio_spi_write(busio_spi_obj_t *self,
xfer.configFlags = kLPSPI_MasterPcs0;
status_t status;
int retries = MAX_SPI_BUSY_RETRIES;
do {
status = LPSPI_MasterTransferBlocking(self->spi, &xfer);
} while (status == kStatus_LPSPI_Busy);
} while (status == kStatus_LPSPI_Busy && --retries > 0);
if (status != kStatus_Success)
printf("%s: status %ld\r\n", __func__, status);
@ -316,9 +319,10 @@ bool common_hal_busio_spi_read(busio_spi_obj_t *self,
xfer.dataSize = len;
status_t status;
int retries = MAX_SPI_BUSY_RETRIES;
do {
status = LPSPI_MasterTransferBlocking(self->spi, &xfer);
} while (status == kStatus_LPSPI_Busy);
} while (status == kStatus_LPSPI_Busy && --retries > 0);
if (status != kStatus_Success)
printf("%s: status %ld\r\n", __func__, status);
@ -342,9 +346,10 @@ bool common_hal_busio_spi_transfer(busio_spi_obj_t *self, const uint8_t *data_ou
xfer.dataSize = len;
status_t status;
int retries = MAX_SPI_BUSY_RETRIES;
do {
status = LPSPI_MasterTransferBlocking(self->spi, &xfer);
} while (status == kStatus_LPSPI_Busy);
} while (status == kStatus_LPSPI_Busy && --retries > 0);
if (status != kStatus_Success)
printf("%s: status %ld\r\n", __func__, status);