diff --git a/bsp/stm3210/usart.c b/bsp/stm3210/usart.c index 8cd44c664b..623f3a7f7f 100644 --- a/bsp/stm3210/usart.c +++ b/bsp/stm3210/usart.c @@ -1,338 +1,339 @@ -#include "usart.h" -#include - -/* - * Use UART1 as console output and finsh input - * interrupt Rx and poll Tx (stream mode) - * - * Use UART2 with DMA Rx and poll Tx -- DMA channel 6 - * Use UART3 with DMA Tx and interrupt Rx -- DMA channel 2 - * - * USART DMA setting on STM32 - * USART1 Tx --> DMA Channel 4 - * USART1 Rx --> DMA Channel 5 - * USART2 Tx --> DMA Channel 7 - * USART2 Rx --> DMA Channel 6 - * USART3 Tx --> DMA Channel 2 - * USART3 Rx --> DMA Channel 3 - */ - -#ifdef RT_USING_UART1 -struct stm32_serial_int_rx uart1_int_rx; -struct stm32_serial_device uart1 = -{ - USART1, - &uart1_int_rx, - RT_NULL, - RT_NULL, - RT_NULL -}; -struct rt_device uart1_device; -#endif - -#ifdef RT_USING_UART2 -struct stm32_serial_int_rx uart2_int_rx; -struct stm32_serial_dma_rx uart2_dma_rx; -struct stm32_serial_device uart2 = -{ - USART2, - &uart2_int_rx, - &uart2_dma_rx, - RT_NULL, - RT_NULL -}; -struct rt_device uart2_device; -#endif - -#ifdef RT_USING_UART3 -struct stm32_serial_int_rx uart3_int_rx; -struct stm32_serial_dma_tx uart3_dma_tx; -struct stm32_serial_device uart3 = -{ - USART3, - &uart3_int_rx, - RT_NULL, - RT_NULL, - &uart3_dma_tx -}; -struct rt_device uart3_device; -#endif - -#define USART1_DR_Base 0x40013804 -#define USART2_DR_Base 0x40004404 -#define USART3_DR_Base 0x40004804 - -/* USART1_REMAP = 0 */ -#define UART1_GPIO_TX GPIO_Pin_9 -#define UART1_GPIO_RX GPIO_Pin_10 -#define UART1_GPIO GPIOA -#define RCC_APBPeriph_UART1 RCC_APB2Periph_USART1 -#define UART1_TX_DMA DMA1_Channel4 -#define UART1_RX_DMA DMA1_Channel5 - -/* USART2_REMAP = 0 */ -#define UART2_GPIO_TX GPIO_Pin_2 -#define UART2_GPIO_RX GPIO_Pin_3 -#define UART2_GPIO GPIOA -#define RCC_APBPeriph_UART2 RCC_APB1Periph_USART2 -#define UART2_TX_DMA DMA1_Channel7 -#define UART2_RX_DMA DMA1_Channel6 - -/* USART3_REMAP[1:0] = 00 */ -#define UART3_GPIO_RX GPIO_Pin_11 -#define UART3_GPIO_TX GPIO_Pin_10 -#define UART3_GPIO GPIOB -#define RCC_APBPeriph_UART3 RCC_APB1Periph_USART3 -#define UART3_TX_DMA DMA1_Channel2 -#define UART3_RX_DMA DMA1_Channel3 - -static void RCC_Configuration(void) -{ - RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); - -#ifdef RT_USING_UART1 - /* Enable USART1 and GPIOA clocks */ - RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE); -#endif - -#ifdef RT_USING_UART2 - /* Enable GPIOD clocks */ - RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE); - /* Enable USART2 clock */ - RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); -#endif - -#ifdef RT_USING_UART3 - RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); - /* Enable USART3 clock */ - RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE); -#endif - -#if defined (RT_USING_UART2) || defined (RT_USING_UART3) - /* DMA clock enable */ - RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); -#endif -} - -static void GPIO_Configuration(void) -{ - GPIO_InitTypeDef GPIO_InitStructure; - -#ifdef RT_USING_UART1 - /* Configure USART1 Rx (PA.10) as input floating */ - GPIO_InitStructure.GPIO_Pin = UART1_GPIO_RX; - GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; - GPIO_Init(UART1_GPIO, &GPIO_InitStructure); - - /* Configure USART1 Tx (PA.09) as alternate function push-pull */ - GPIO_InitStructure.GPIO_Pin = UART1_GPIO_TX; - GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; - GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; - GPIO_Init(UART1_GPIO, &GPIO_InitStructure); -#endif - -#ifdef RT_USING_UART2 - /* Configure USART2 Rx as input floating */ - GPIO_InitStructure.GPIO_Pin = UART2_GPIO_RX; - GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; - GPIO_Init(UART2_GPIO, &GPIO_InitStructure); - - /* Configure USART2 Tx as alternate function push-pull */ - GPIO_InitStructure.GPIO_Pin = UART2_GPIO_TX; - GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; - GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; - GPIO_Init(UART2_GPIO, &GPIO_InitStructure); -#endif - -#ifdef RT_USING_UART3 - /* Configure USART3 Rx as input floating */ - GPIO_InitStructure.GPIO_Pin = UART3_GPIO_RX; - GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; - GPIO_Init(UART3_GPIO, &GPIO_InitStructure); - - /* Configure USART3 Tx as alternate function push-pull */ - GPIO_InitStructure.GPIO_Pin = UART3_GPIO_TX; - GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; - GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; - GPIO_Init(UART3_GPIO, &GPIO_InitStructure); -#endif -} - -static void NVIC_Configuration(void) -{ - NVIC_InitTypeDef NVIC_InitStructure; - - /* Configure the NVIC Preemption Priority Bits */ - NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0); - -#ifdef RT_USING_UART1 - /* Enable the USART1 Interrupt */ - NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; - NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; - NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; - NVIC_Init(&NVIC_InitStructure); -#endif - -#ifdef RT_USING_UART2 - /* Enable the USART2 Interrupt */ - NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn; - NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; - NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; - NVIC_Init(&NVIC_InitStructure); - - /* Enable the DMA1 Channel6 Interrupt */ - NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel6_IRQn; - NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; - NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; - NVIC_Init(&NVIC_InitStructure); -#endif - -#ifdef RT_USING_UART3 - /* Enable the USART3 Interrupt */ - NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn; - NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; - NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; - NVIC_Init(&NVIC_InitStructure); - - /* Enable the DMA1 Channel2 Interrupt */ - NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel2_IRQn; - NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; - NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; - NVIC_Init(&NVIC_InitStructure); -#endif -} - -static void DMA_Configuration(void) -{ -#if defined(RT_USING_UART2) || defined (RT_USING_UART3) - DMA_InitTypeDef DMA_InitStructure; - - /* fill init structure */ - DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; - DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; - DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte; - DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte; - DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; - DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh; - DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; -#endif - -#ifdef RT_USING_UART2 - /* DMA1 Channel4 (triggered by USART2 Rx event) Config */ - DMA_DeInit(UART2_RX_DMA); - DMA_InitStructure.DMA_PeripheralBaseAddr = USART2_DR_Base; - DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; - DMA_InitStructure.DMA_MemoryBaseAddr = (u32)0; - DMA_InitStructure.DMA_BufferSize = 0; - DMA_Init(UART2_RX_DMA, &DMA_InitStructure); - DMA_ITConfig(UART2_RX_DMA, DMA_IT_TC | DMA_IT_TE, ENABLE); - DMA_ClearFlag(DMA1_FLAG_TC4); -#endif - -#ifdef RT_USING_UART3 - /* DMA1 Channel5 (triggered by USART3 Tx event) Config */ - DMA_DeInit(UART3_TX_DMA); - DMA_InitStructure.DMA_PeripheralBaseAddr = USART3_DR_Base; - DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST; - DMA_InitStructure.DMA_MemoryBaseAddr = (u32)0; - DMA_InitStructure.DMA_BufferSize = 0; - DMA_Init(UART3_TX_DMA, &DMA_InitStructure); - DMA_ITConfig(UART3_TX_DMA, DMA_IT_TC | DMA_IT_TE, ENABLE); - DMA_ClearFlag(DMA1_FLAG_TC5); -#endif -} - -/* - * Init all related hardware in here - * rt_hw_serial_init() will register all supported USART device - */ -void rt_hw_usart_init() -{ - USART_InitTypeDef USART_InitStructure; - USART_ClockInitTypeDef USART_ClockInitStructure; - - RCC_Configuration(); - - GPIO_Configuration(); - - NVIC_Configuration(); - - DMA_Configuration(); - - /* uart init */ -#ifdef RT_USING_UART1 - USART_InitStructure.USART_BaudRate = 115200; - USART_InitStructure.USART_WordLength = USART_WordLength_8b; - USART_InitStructure.USART_StopBits = USART_StopBits_1; - USART_InitStructure.USART_Parity = USART_Parity_No; - USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; - USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; - USART_ClockInitStructure.USART_Clock = USART_Clock_Disable; - USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low; - USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge; - USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable; - USART_Init(USART1, &USART_InitStructure); - USART_ClockInit(USART1, &USART_ClockInitStructure); - - /* register uart1 */ - rt_hw_serial_register(&uart1_device, "uart1", - RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM, - &uart1); - - /* enable interrupt */ - USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); -#endif - -#ifdef RT_USING_UART2 - USART_InitStructure.USART_BaudRate = 115200; - USART_InitStructure.USART_WordLength = USART_WordLength_8b; - USART_InitStructure.USART_StopBits = USART_StopBits_1; - USART_InitStructure.USART_Parity = USART_Parity_No; - USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; - USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; - USART_ClockInitStructure.USART_Clock = USART_Clock_Disable; - USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low; - USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge; - USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable; - USART_Init(USART2, &USART_InitStructure); - USART_ClockInit(USART2, &USART_ClockInitStructure); - - uart2_dma_rx.dma_channel= UART2_RX_DMA; - - /* register uart2 */ - rt_hw_serial_register(&uart2_device, "uart2", - RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_DMA_RX, - &uart2); - - /* Enable USART2 DMA Rx request */ - USART_DMACmd(USART2, USART_DMAReq_Rx , ENABLE); -#endif - -#ifdef RT_USING_UART3 - USART_InitStructure.USART_BaudRate = 115200; - USART_InitStructure.USART_WordLength = USART_WordLength_8b; - USART_InitStructure.USART_StopBits = USART_StopBits_1; - USART_InitStructure.USART_Parity = USART_Parity_No; - USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; - USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; - USART_ClockInitStructure.USART_Clock = USART_Clock_Disable; - USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low; - USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge; - USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable; - USART_Init(USART3, &USART_InitStructure); - USART_ClockInit(USART3, &USART_ClockInitStructure); - - uart3_dma_tx.dma_channel= UART3_TX_DMA; - - /* register uart3 */ - rt_hw_serial_register(&uart3_device, "uart3", - RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_DMA_TX, - &uart3); - - /* Enable USART3 DMA Tx request */ - USART_DMACmd(USART3, USART_DMAReq_Tx , ENABLE); - - /* enable interrupt */ - USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); -#endif -} +#include "usart.h" +#include +#include + +/* + * Use UART1 as console output and finsh input + * interrupt Rx and poll Tx (stream mode) + * + * Use UART2 with DMA Rx and poll Tx -- DMA channel 6 + * Use UART3 with DMA Tx and interrupt Rx -- DMA channel 2 + * + * USART DMA setting on STM32 + * USART1 Tx --> DMA Channel 4 + * USART1 Rx --> DMA Channel 5 + * USART2 Tx --> DMA Channel 7 + * USART2 Rx --> DMA Channel 6 + * USART3 Tx --> DMA Channel 2 + * USART3 Rx --> DMA Channel 3 + */ + +#ifdef RT_USING_UART1 +struct stm32_serial_int_rx uart1_int_rx; +struct stm32_serial_device uart1 = +{ + USART1, + &uart1_int_rx, + RT_NULL, + RT_NULL, + RT_NULL +}; +struct rt_device uart1_device; +#endif + +#ifdef RT_USING_UART2 +struct stm32_serial_int_rx uart2_int_rx; +struct stm32_serial_dma_rx uart2_dma_rx; +struct stm32_serial_device uart2 = +{ + USART2, + &uart2_int_rx, + &uart2_dma_rx, + RT_NULL, + RT_NULL +}; +struct rt_device uart2_device; +#endif + +#ifdef RT_USING_UART3 +struct stm32_serial_int_rx uart3_int_rx; +struct stm32_serial_dma_tx uart3_dma_tx; +struct stm32_serial_device uart3 = +{ + USART3, + &uart3_int_rx, + RT_NULL, + RT_NULL, + &uart3_dma_tx +}; +struct rt_device uart3_device; +#endif + +#define USART1_DR_Base 0x40013804 +#define USART2_DR_Base 0x40004404 +#define USART3_DR_Base 0x40004804 + +/* USART1_REMAP = 0 */ +#define UART1_GPIO_TX GPIO_Pin_9 +#define UART1_GPIO_RX GPIO_Pin_10 +#define UART1_GPIO GPIOA +#define RCC_APBPeriph_UART1 RCC_APB2Periph_USART1 +#define UART1_TX_DMA DMA1_Channel4 +#define UART1_RX_DMA DMA1_Channel5 + +/* USART2_REMAP = 0 */ +#define UART2_GPIO_TX GPIO_Pin_2 +#define UART2_GPIO_RX GPIO_Pin_3 +#define UART2_GPIO GPIOA +#define RCC_APBPeriph_UART2 RCC_APB1Periph_USART2 +#define UART2_TX_DMA DMA1_Channel7 +#define UART2_RX_DMA DMA1_Channel6 + +/* USART3_REMAP[1:0] = 00 */ +#define UART3_GPIO_RX GPIO_Pin_11 +#define UART3_GPIO_TX GPIO_Pin_10 +#define UART3_GPIO GPIOB +#define RCC_APBPeriph_UART3 RCC_APB1Periph_USART3 +#define UART3_TX_DMA DMA1_Channel2 +#define UART3_RX_DMA DMA1_Channel3 + +static void RCC_Configuration(void) +{ + RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); + +#ifdef RT_USING_UART1 + /* Enable USART1 and GPIOA clocks */ + RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE); +#endif + +#ifdef RT_USING_UART2 + /* Enable GPIOD clocks */ + RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE); + /* Enable USART2 clock */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); +#endif + +#ifdef RT_USING_UART3 + RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); + /* Enable USART3 clock */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE); +#endif + +#if defined (RT_USING_UART2) || defined (RT_USING_UART3) + /* DMA clock enable */ + RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); +#endif +} + +static void GPIO_Configuration(void) +{ + GPIO_InitTypeDef GPIO_InitStructure; + +#ifdef RT_USING_UART1 + /* Configure USART1 Rx (PA.10) as input floating */ + GPIO_InitStructure.GPIO_Pin = UART1_GPIO_RX; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; + GPIO_Init(UART1_GPIO, &GPIO_InitStructure); + + /* Configure USART1 Tx (PA.09) as alternate function push-pull */ + GPIO_InitStructure.GPIO_Pin = UART1_GPIO_TX; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; + GPIO_Init(UART1_GPIO, &GPIO_InitStructure); +#endif + +#ifdef RT_USING_UART2 + /* Configure USART2 Rx as input floating */ + GPIO_InitStructure.GPIO_Pin = UART2_GPIO_RX; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; + GPIO_Init(UART2_GPIO, &GPIO_InitStructure); + + /* Configure USART2 Tx as alternate function push-pull */ + GPIO_InitStructure.GPIO_Pin = UART2_GPIO_TX; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + GPIO_Init(UART2_GPIO, &GPIO_InitStructure); +#endif + +#ifdef RT_USING_UART3 + /* Configure USART3 Rx as input floating */ + GPIO_InitStructure.GPIO_Pin = UART3_GPIO_RX; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; + GPIO_Init(UART3_GPIO, &GPIO_InitStructure); + + /* Configure USART3 Tx as alternate function push-pull */ + GPIO_InitStructure.GPIO_Pin = UART3_GPIO_TX; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + GPIO_Init(UART3_GPIO, &GPIO_InitStructure); +#endif +} + +static void NVIC_Configuration(void) +{ + NVIC_InitTypeDef NVIC_InitStructure; + + /* Configure the NVIC Preemption Priority Bits */ + NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0); + +#ifdef RT_USING_UART1 + /* Enable the USART1 Interrupt */ + NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; + NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; + NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; + NVIC_Init(&NVIC_InitStructure); +#endif + +#ifdef RT_USING_UART2 + /* Enable the USART2 Interrupt */ + NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn; + NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; + NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; + NVIC_Init(&NVIC_InitStructure); + + /* Enable the DMA1 Channel6 Interrupt */ + NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel6_IRQn; + NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; + NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; + NVIC_Init(&NVIC_InitStructure); +#endif + +#ifdef RT_USING_UART3 + /* Enable the USART3 Interrupt */ + NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn; + NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; + NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; + NVIC_Init(&NVIC_InitStructure); + + /* Enable the DMA1 Channel2 Interrupt */ + NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel2_IRQn; + NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; + NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; + NVIC_Init(&NVIC_InitStructure); +#endif +} + +static void DMA_Configuration(void) +{ +#if defined(RT_USING_UART2) || defined (RT_USING_UART3) + DMA_InitTypeDef DMA_InitStructure; + + /* fill init structure */ + DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; + DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; + DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte; + DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte; + DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; + DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh; + DMA_InitStructure.DMA_M2M = DMA_M2M_Disable; +#endif + +#ifdef RT_USING_UART2 + /* DMA1 Channel4 (triggered by USART2 Rx event) Config */ + DMA_DeInit(UART2_RX_DMA); + DMA_InitStructure.DMA_PeripheralBaseAddr = USART2_DR_Base; + DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC; + DMA_InitStructure.DMA_MemoryBaseAddr = (u32)0; + DMA_InitStructure.DMA_BufferSize = 0; + DMA_Init(UART2_RX_DMA, &DMA_InitStructure); + DMA_ITConfig(UART2_RX_DMA, DMA_IT_TC | DMA_IT_TE, ENABLE); + DMA_ClearFlag(DMA1_FLAG_TC4); +#endif + +#ifdef RT_USING_UART3 + /* DMA1 Channel5 (triggered by USART3 Tx event) Config */ + DMA_DeInit(UART3_TX_DMA); + DMA_InitStructure.DMA_PeripheralBaseAddr = USART3_DR_Base; + DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST; + DMA_InitStructure.DMA_MemoryBaseAddr = (u32)0; + DMA_InitStructure.DMA_BufferSize = 0; + DMA_Init(UART3_TX_DMA, &DMA_InitStructure); + DMA_ITConfig(UART3_TX_DMA, DMA_IT_TC | DMA_IT_TE, ENABLE); + DMA_ClearFlag(DMA1_FLAG_TC5); +#endif +} + +/* + * Init all related hardware in here + * rt_hw_serial_init() will register all supported USART device + */ +void rt_hw_usart_init() +{ + USART_InitTypeDef USART_InitStructure; + USART_ClockInitTypeDef USART_ClockInitStructure; + + RCC_Configuration(); + + GPIO_Configuration(); + + NVIC_Configuration(); + + DMA_Configuration(); + + /* uart init */ +#ifdef RT_USING_UART1 + USART_InitStructure.USART_BaudRate = 115200; + USART_InitStructure.USART_WordLength = USART_WordLength_8b; + USART_InitStructure.USART_StopBits = USART_StopBits_1; + USART_InitStructure.USART_Parity = USART_Parity_No; + USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; + USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; + USART_ClockInitStructure.USART_Clock = USART_Clock_Disable; + USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low; + USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge; + USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable; + USART_Init(USART1, &USART_InitStructure); + USART_ClockInit(USART1, &USART_ClockInitStructure); + + /* register uart1 */ + rt_hw_serial_register(&uart1_device, "uart1", + RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM, + &uart1); + + /* enable interrupt */ + USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); +#endif + +#ifdef RT_USING_UART2 + USART_InitStructure.USART_BaudRate = 115200; + USART_InitStructure.USART_WordLength = USART_WordLength_8b; + USART_InitStructure.USART_StopBits = USART_StopBits_1; + USART_InitStructure.USART_Parity = USART_Parity_No; + USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; + USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; + USART_ClockInitStructure.USART_Clock = USART_Clock_Disable; + USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low; + USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge; + USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable; + USART_Init(USART2, &USART_InitStructure); + USART_ClockInit(USART2, &USART_ClockInitStructure); + + uart2_dma_rx.dma_channel= UART2_RX_DMA; + + /* register uart2 */ + rt_hw_serial_register(&uart2_device, "uart2", + RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_DMA_RX, + &uart2); + + /* Enable USART2 DMA Rx request */ + USART_DMACmd(USART2, USART_DMAReq_Rx , ENABLE); +#endif + +#ifdef RT_USING_UART3 + USART_InitStructure.USART_BaudRate = 115200; + USART_InitStructure.USART_WordLength = USART_WordLength_8b; + USART_InitStructure.USART_StopBits = USART_StopBits_1; + USART_InitStructure.USART_Parity = USART_Parity_No; + USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; + USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; + USART_ClockInitStructure.USART_Clock = USART_Clock_Disable; + USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low; + USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge; + USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable; + USART_Init(USART3, &USART_InitStructure); + USART_ClockInit(USART3, &USART_ClockInitStructure); + + uart3_dma_tx.dma_channel= UART3_TX_DMA; + + /* register uart3 */ + rt_hw_serial_register(&uart3_device, "uart3", + RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_DMA_TX, + &uart3); + + /* Enable USART3 DMA Tx request */ + USART_DMACmd(USART3, USART_DMAReq_Tx , ENABLE); + + /* enable interrupt */ + USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); +#endif +}