diff options
| author | Philip Jander <info@jander.it> | 2021-02-07 17:06:46 +0100 |
|---|---|---|
| committer | Philip Jander <info@jander.it> | 2021-02-07 17:06:46 +0100 |
| commit | 5bf08c503ba50fc24652c1d8720aee8c6e7de627 (patch) | |
| tree | 96db336339a3e2d67870fb60d0623f134c92f9c3 | |
| parent | ae91b12aeaf18d1de409a35df3c498c9854e5cb3 (diff) | |
adds: maximum retries on SPI busy
| -rw-r--r-- | ports/mimxrt10xx/common-hal/busio/SPI.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/ports/mimxrt10xx/common-hal/busio/SPI.c b/ports/mimxrt10xx/common-hal/busio/SPI.c index fdba5b202..00d8d9867 100644 --- a/ports/mimxrt10xx/common-hal/busio/SPI.c +++ b/ports/mimxrt10xx/common-hal/busio/SPI.c @@ -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); |