diff options
Diffstat (limited to 'src/stm32/spi.c')
| -rw-r--r-- | src/stm32/spi.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/stm32/spi.c b/src/stm32/spi.c index 5aa19e33..376e11d0 100644 --- a/src/stm32/spi.c +++ b/src/stm32/spi.c @@ -4,6 +4,7 @@ // // This file may be distributed under the terms of the GNU GPLv3 license. +#include "board/io.h" // readb, writeb #include "command.h" // shutdown #include "gpio.h" // spi_setup #include "internal.h" // gpio_peripheral @@ -53,6 +54,11 @@ spi_setup(uint32_t bus, uint8_t mode, uint32_t rate) gpio_peripheral(spi_bus[bus].miso_pin, spi_bus[bus].function, 1); gpio_peripheral(spi_bus[bus].mosi_pin, spi_bus[bus].function, 0); gpio_peripheral(spi_bus[bus].sck_pin, spi_bus[bus].function, 0); + + // Configure CR2 on stm32f0 +#if CONFIG_MACH_STM32F0 + spi->CR2 = SPI_CR2_FRXTH | (7 << SPI_CR2_DS_Pos); +#endif } // Calculate CR1 register @@ -79,10 +85,10 @@ spi_transfer(struct spi_config config, uint8_t receive_data, { SPI_TypeDef *spi = config.spi; while (len--) { - spi->DR = *data; + writeb((void *)&spi->DR, *data); while (!(spi->SR & SPI_SR_RXNE)) ; - uint8_t rdata = spi->DR; + uint8_t rdata = readb((void *)&spi->DR); if (receive_data) *data = rdata; data++; |