diff options
| -rw-r--r-- | ports/stm32/qspi.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/ports/stm32/qspi.c b/ports/stm32/qspi.c index 027061fd7..d741cf9aa 100644 --- a/ports/stm32/qspi.c +++ b/ports/stm32/qspi.c @@ -228,6 +228,10 @@ STATIC void qspi_write_cmd_data(void *self_in, uint8_t cmd, size_t len, uint32_t | cmd << QUADSPI_CCR_INSTRUCTION_Pos // write opcode ; + // Wait for at least 1 free byte location in the FIFO. + while (!(QUADSPI->SR & QUADSPI_SR_FTF)) { + } + // This assumes len==2 *(uint16_t *)&QUADSPI->DR = data; } |