diff options
| -rw-r--r-- | ports/stm32/qspi.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/ports/stm32/qspi.c b/ports/stm32/qspi.c index 282759967..ec744bfb2 100644 --- a/ports/stm32/qspi.c +++ b/ports/stm32/qspi.c @@ -139,6 +139,16 @@ STATIC int qspi_ioctl(void *self_in, uint32_t cmd) { case MP_QSPI_IOCTL_INIT: qspi_init(); break; + case MP_QSPI_IOCTL_BUS_ACQUIRE: + // Disable memory-mapped region during bus access + qspi_mpu_disable_all(); + // Abort any ongoing transfer if peripheral is busy + if (QUADSPI->SR & QUADSPI_SR_BUSY) { + QUADSPI->CR |= QUADSPI_CR_ABORT; + while (QUADSPI->CR & QUADSPI_CR_ABORT) { + } + } + break; case MP_QSPI_IOCTL_BUS_RELEASE: // Switch to memory-map mode when bus is idle qspi_memory_map(); |