diff options
| -rw-r--r-- | c/src/lib/libbsp/arm/atsam/include/sc16is752.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/c/src/lib/libbsp/arm/atsam/include/sc16is752.h b/c/src/lib/libbsp/arm/atsam/include/sc16is752.h index 31f96609f6..35d298a7ed 100644 --- a/c/src/lib/libbsp/arm/atsam/include/sc16is752.h +++ b/c/src/lib/libbsp/arm/atsam/include/sc16is752.h @@ -42,7 +42,8 @@ typedef struct { * @param[in] input_frequency The input frequency in Hertz of the SC16IS752 * chip. See XTAL1 and XTAL2 pins. * @param[in] spi_path The SPI bus device path. - * @param[in] spi_chip_select The SPI chip select (starts with 1, not 0). + * @param[in] spi_chip_select The SPI chip select (starts with 0, the SPI + * driver uses SPI_ChipSelect(1 << spi_chip_select)). * @param[in] spi_speed_hz The SPI bus speed in Hertz. * @param[in] irq_pin The interrupt pin, e.g. { PIO_PD28, PIOD, ID_PIOD, * PIO_INPUT, PIO_IT_LOW_LEVEL }. |