From 9c5c5c9243975b20b097dfb65409a3bae31f9d97 Mon Sep 17 00:00:00 2001 From: Vegard Storheil Eriksen Date: Sun, 14 Aug 2016 18:39:43 +0200 Subject: STM32L0: Added SPI1. --- spi/spi.h | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'spi/spi.h') diff --git a/spi/spi.h b/spi/spi.h index 1f9e0eb..c781a56 100644 --- a/spi/spi.h +++ b/spi/spi.h @@ -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 -- cgit v1.2.3