diff options
Diffstat (limited to 'src/stmf0/ao_arch_funcs.h')
| -rw-r--r-- | src/stmf0/ao_arch_funcs.h | 52 |
1 files changed, 51 insertions, 1 deletions
diff --git a/src/stmf0/ao_arch_funcs.h b/src/stmf0/ao_arch_funcs.h index 01a20c73..8b6234c4 100644 --- a/src/stmf0/ao_arch_funcs.h +++ b/src/stmf0/ao_arch_funcs.h @@ -83,7 +83,57 @@ void ao_spi_send_fixed(uint8_t value, uint16_t len, uint8_t spi_index); void -ao_spi_send_sync(void *block, uint16_t len, uint8_t spi_index); +ao_spi_send_sync(const void *block, uint16_t len, uint8_t spi_index); + +void +ao_spi_start_bytes(uint8_t spi_index); + +void +ao_spi_stop_bytes(uint8_t spi_index); + +static inline void +ao_spi_send_byte(uint8_t byte, uint8_t spi_index) +{ + struct stm_spi *stm_spi; + + switch (AO_SPI_INDEX(spi_index)) { + case 0: + stm_spi = &stm_spi1; + break; + case 1: + stm_spi = &stm_spi2; + break; + } + + while (!(stm_spi->sr & (1 << STM_SPI_SR_TXE))) + ; + stm_spi->dr = byte; + while (!(stm_spi->sr & (1 << STM_SPI_SR_RXNE))) + ; + (void) stm_spi->dr; +} + +static inline uint8_t +ao_spi_recv_byte(uint8_t spi_index) +{ + struct stm_spi *stm_spi; + + switch (AO_SPI_INDEX(spi_index)) { + case 0: + stm_spi = &stm_spi1; + break; + case 1: + stm_spi = &stm_spi2; + break; + } + + while (!(stm_spi->sr & (1 << STM_SPI_SR_TXE))) + ; + stm_spi->dr = 0xff; + while (!(stm_spi->sr & (1 << STM_SPI_SR_RXNE))) + ; + return stm_spi->dr; +} void ao_spi_recv(void *block, uint16_t len, uint8_t spi_index); |