diff options
Diffstat (limited to 'spi/spi.h')
| -rw-r--r-- | spi/spi.h | 11 |
1 files changed, 8 insertions, 3 deletions
@@ -7,7 +7,10 @@ struct SPI_reg_t { volatile uint32_t CR1; volatile uint32_t CR2; volatile uint32_t SR; - volatile uint32_t DR; + union { + volatile uint32_t DR; + volatile uint8_t DR8; + }; volatile uint32_t CRCPR; volatile uint32_t RXCRCR; volatile uint32_t TXCRCR; @@ -22,13 +25,13 @@ class SPI_t { SPI_t(uint32_t reg_addr) : reg(*(SPI_reg_t*)reg_addr) {} uint8_t transfer_byte(uint8_t out = 0) { - reg.DR = out; + reg.DR8 = out; while(!(reg.SR & 0x01)) { Thread::yield(); } - return reg.DR; + return reg.DR8; } }; @@ -44,6 +47,8 @@ static SPI_t SPI3(0x40003c00); static SPI_t SPI1(0x40013000); static SPI_t SPI2(0x40003800); static SPI_t SPI3(0x40003c00); +#elif defined(STM32L0) +static SPI_t SPI1(0x40013000); #endif #endif |