diff options
| -rw-r--r-- | ports/stm32/spi.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/ports/stm32/spi.c b/ports/stm32/spi.c index 7e9864bbc..1aa8d666f 100644 --- a/ports/stm32/spi.c +++ b/ports/stm32/spi.c @@ -214,7 +214,7 @@ STATIC void spi_set_params(const spi_t *spi_obj, uint32_t prescale, int32_t baud spi_clock = HAL_RCC_GetPCLK2Freq(); } #endif - prescale = spi_clock / baudrate; + prescale = (spi_clock + baudrate - 1) / baudrate; } if (prescale <= 2) { init->BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2; } else if (prescale <= 4) { init->BaudRatePrescaler = SPI_BAUDRATEPRESCALER_4; } |