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体验新版 GitCode,发现更多精彩内容 >>
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f4f4bd54
编写于
7月 09, 2016
作者:
armink_ztl
浏览文件
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电子邮件补丁
差异文件
[BSP] Add usart DMA Rx driver to stm32f40x.
上级
47f07980
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
404 addition
and
51 deletion
+404
-51
bsp/stm32f40x/drivers/usart.c
bsp/stm32f40x/drivers/usart.c
+404
-51
未找到文件。
bsp/stm32f40x/drivers/usart.c
浏览文件 @
f4f4bd54
...
...
@@ -13,6 +13,7 @@
* 2010-03-29 Bernard remove interrupt Tx and DMA Rx mode
* 2012-02-08 aozima update for F4.
* 2012-07-28 aozima update for ART board.
* 2016-05-28 armink add DMA Rx mode
*/
#include "stm32f4xx.h"
...
...
@@ -29,8 +30,6 @@
#define UART1_GPIO GPIOB
#define UART1_GPIO_RCC RCC_AHB1Periph_GPIOB
#define RCC_APBPeriph_UART1 RCC_APB2Periph_USART1
#define UART1_TX_DMA DMA1_Channel4
#define UART1_RX_DMA DMA1_Channel5
#define UART2_GPIO_TX GPIO_Pin_2
#define UART2_TX_PIN_SOURCE GPIO_PinSource2
...
...
@@ -39,8 +38,6 @@
#define UART2_GPIO GPIOA
#define UART2_GPIO_RCC RCC_AHB1Periph_GPIOA
#define RCC_APBPeriph_UART2 RCC_APB1Periph_USART2
#define UART2_TX_DMA DMA1_Channel4
#define UART2_RX_DMA DMA1_Channel5
#define UART3_GPIO_TX GPIO_Pin_8
#define UART3_TX_PIN_SOURCE GPIO_PinSource8
...
...
@@ -49,19 +46,51 @@
#define UART3_GPIO GPIOD
#define UART3_GPIO_RCC RCC_AHB1Periph_GPIOD
#define RCC_APBPeriph_UART3 RCC_APB1Periph_USART3
#define UART3_TX_DMA DMA1_Stream1
#define UART3_RX_DMA DMA1_Stream3
#define UART4_GPIO_TX GPIO_Pin_10
#define UART4_TX_PIN_SOURCE GPIO_PinSource10
#define UART4_GPIO_RX GPIO_Pin_11
#define UART4_RX_PIN_SOURCE GPIO_PinSource11
#define UART4_GPIO GPIOC
#define UART4_GPIO_RCC RCC_AHB1Periph_GPIOC
#define RCC_APBPeriph_UART4 RCC_APB1Periph_UART4
#define UART5_GPIO_TX GPIO_Pin_12
#define UART5_TX_PIN_SOURCE GPIO_PinSource12
#define UART5_GPIO_RX GPIO_Pin_2
#define UART5_RX_PIN_SOURCE GPIO_PinSource2
#define UART5_TX GPIOC
#define UART5_RX GPIOD
#define UART5_GPIO_RCC_TX RCC_AHB1Periph_GPIOB
#define UART5_GPIO_RCC_RX RCC_AHB1Periph_GPIOD
#define RCC_APBPeriph_UART5 RCC_APB1Periph_UART5
/* STM32 uart driver */
struct
stm32_uart
{
USART_TypeDef
*
uart_device
;
IRQn_Type
irq
;
struct
stm32_uart_dma
{
/* dma stream */
DMA_Stream_TypeDef
*
rx_stream
;
/* dma channel */
uint32_t
rx_ch
;
/* dma flag */
uint32_t
rx_flag
;
/* dma irq channel */
uint8_t
rx_irq_ch
;
/* setting receive len */
rt_size_t
setting_recv_len
;
/* last receive index */
rt_size_t
last_recv_index
;
}
dma
;
};
static
void
DMA_Configuration
(
struct
rt_serial_device
*
serial
);
static
rt_err_t
stm32_configure
(
struct
rt_serial_device
*
serial
,
struct
serial_configure
*
cfg
)
{
struct
stm32_uart
*
uart
;
struct
stm32_uart
*
uart
;
USART_InitTypeDef
USART_InitStructure
;
RT_ASSERT
(
serial
!=
RT_NULL
);
...
...
@@ -69,20 +98,28 @@ static rt_err_t stm32_configure(struct rt_serial_device *serial, struct serial_c
uart
=
(
struct
stm32_uart
*
)
serial
->
parent
.
user_data
;
if
(
cfg
->
baud_rate
==
BAUD_RATE_9600
)
USART_InitStructure
.
USART_BaudRate
=
9600
;
else
if
(
cfg
->
baud_rate
==
BAUD_RATE_115200
)
USART_InitStructure
.
USART_BaudRate
=
115200
;
USART_InitStructure
.
USART_BaudRate
=
cfg
->
baud_rate
;
if
(
cfg
->
data_bits
==
DATA_BITS_8
)
if
(
cfg
->
data_bits
==
DATA_BITS_8
)
{
USART_InitStructure
.
USART_WordLength
=
USART_WordLength_8b
;
}
else
if
(
cfg
->
data_bits
==
DATA_BITS_9
)
{
USART_InitStructure
.
USART_WordLength
=
USART_WordLength_9b
;
}
if
(
cfg
->
stop_bits
==
STOP_BITS_1
)
if
(
cfg
->
stop_bits
==
STOP_BITS_1
)
{
USART_InitStructure
.
USART_StopBits
=
USART_StopBits_1
;
else
if
(
cfg
->
stop_bits
==
STOP_BITS_2
)
}
else
if
(
cfg
->
stop_bits
==
STOP_BITS_2
){
USART_InitStructure
.
USART_StopBits
=
USART_StopBits_2
;
}
if
(
cfg
->
parity
==
PARITY_NONE
){
USART_InitStructure
.
USART_Parity
=
USART_Parity_No
;
}
else
if
(
cfg
->
parity
==
PARITY_ODD
)
{
USART_InitStructure
.
USART_Parity
=
USART_Parity_Odd
;
}
else
if
(
cfg
->
parity
==
PARITY_EVEN
)
{
USART_InitStructure
.
USART_Parity
=
USART_Parity_Even
;
}
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_Init
(
uart
->
uart_device
,
&
USART_InitStructure
);
...
...
@@ -95,7 +132,8 @@ static rt_err_t stm32_configure(struct rt_serial_device *serial, struct serial_c
static
rt_err_t
stm32_control
(
struct
rt_serial_device
*
serial
,
int
cmd
,
void
*
arg
)
{
struct
stm32_uart
*
uart
;
struct
stm32_uart
*
uart
;
rt_uint32_t
ctrl_arg
=
(
rt_uint32_t
)(
arg
);
RT_ASSERT
(
serial
!=
RT_NULL
);
uart
=
(
struct
stm32_uart
*
)
serial
->
parent
.
user_data
;
...
...
@@ -114,6 +152,11 @@ static rt_err_t stm32_control(struct rt_serial_device *serial, int cmd, void *ar
/* enable interrupt */
USART_ITConfig
(
uart
->
uart_device
,
USART_IT_RXNE
,
ENABLE
);
break
;
/* USART config */
case
RT_DEVICE_CTRL_CONFIG
:
if
(
ctrl_arg
==
RT_DEVICE_FLAG_DMA_RX
)
{
DMA_Configuration
(
serial
);
}
}
return
RT_EOK
;
...
...
@@ -149,6 +192,125 @@ static int stm32_getc(struct rt_serial_device *serial)
return
ch
;
}
/**
* DMA initialize by DMA_InitStruct structure
*
* @param serial serial device
* @param setting_recv_len setting receive length
* @param mem_base_addr memory 0 base address for DMA stream
*/
static
void
dma_uart_config
(
struct
rt_serial_device
*
serial
,
uint32_t
setting_recv_len
,
void
*
mem_base_addr
)
{
struct
stm32_uart
*
uart
=
(
struct
stm32_uart
*
)
serial
->
parent
.
user_data
;
DMA_InitTypeDef
DMA_InitStructure
;
/* rx dma config */
uart
->
dma
.
setting_recv_len
=
setting_recv_len
;
DMA_DeInit
(
uart
->
dma
.
rx_stream
);
while
(
DMA_GetCmdStatus
(
uart
->
dma
.
rx_stream
)
!=
DISABLE
);
DMA_InitStructure
.
DMA_Channel
=
uart
->
dma
.
rx_ch
;
DMA_InitStructure
.
DMA_PeripheralBaseAddr
=
(
uint32_t
)
&
(
uart
->
uart_device
->
DR
);
DMA_InitStructure
.
DMA_Memory0BaseAddr
=
(
uint32_t
)
mem_base_addr
;
DMA_InitStructure
.
DMA_DIR
=
DMA_DIR_PeripheralToMemory
;
DMA_InitStructure
.
DMA_BufferSize
=
uart
->
dma
.
setting_recv_len
;
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_PeripheralDataSize_Byte
;
DMA_InitStructure
.
DMA_Mode
=
DMA_Mode_Circular
;
DMA_InitStructure
.
DMA_Priority
=
DMA_Priority_High
;
DMA_InitStructure
.
DMA_FIFOMode
=
DMA_FIFOMode_Disable
;
DMA_InitStructure
.
DMA_FIFOThreshold
=
DMA_FIFOThreshold_Full
;
DMA_InitStructure
.
DMA_MemoryBurst
=
DMA_MemoryBurst_Single
;
DMA_InitStructure
.
DMA_PeripheralBurst
=
DMA_PeripheralBurst_Single
;
DMA_Init
(
uart
->
dma
.
rx_stream
,
&
DMA_InitStructure
);
}
/**
* Serial port receive idle process. This need add to uart idle ISR.
*
* @param serial serial device
*/
static
void
dma_uart_rx_idle_isr
(
struct
rt_serial_device
*
serial
)
{
struct
stm32_uart
*
uart
=
(
struct
stm32_uart
*
)
serial
->
parent
.
user_data
;
rt_size_t
recv_total_index
,
recv_len
;
recv_total_index
=
uart
->
dma
.
setting_recv_len
-
DMA_GetCurrDataCounter
(
uart
->
dma
.
rx_stream
);
if
(
recv_total_index
>=
uart
->
dma
.
last_recv_index
)
{
recv_len
=
recv_total_index
-
uart
->
dma
.
last_recv_index
;
}
else
{
recv_len
=
uart
->
dma
.
setting_recv_len
-
uart
->
dma
.
last_recv_index
+
recv_total_index
;
}
uart
->
dma
.
last_recv_index
=
recv_total_index
;
rt_hw_serial_isr
(
serial
,
RT_SERIAL_EVENT_RX_DMADONE
|
(
recv_len
<<
8
));
/* read a data for clear receive idle interrupt flag */
USART_ReceiveData
(
uart
->
uart_device
);
}
/**
* DMA receive done process. This need add to DMA receive done ISR.
*
* @param serial serial device
*/
static
void
dma_rx_done_isr
(
struct
rt_serial_device
*
serial
)
{
struct
stm32_uart
*
uart
=
(
struct
stm32_uart
*
)
serial
->
parent
.
user_data
;
rt_size_t
recv_total_index
,
recv_len
;
if
(
DMA_GetFlagStatus
(
uart
->
dma
.
rx_stream
,
uart
->
dma
.
rx_flag
)
!=
RESET
)
{
/* disable dma, stop receive data */
DMA_Cmd
(
uart
->
dma
.
rx_stream
,
DISABLE
);
recv_total_index
=
uart
->
dma
.
setting_recv_len
-
DMA_GetCurrDataCounter
(
uart
->
dma
.
rx_stream
);
if
(
recv_total_index
>=
uart
->
dma
.
last_recv_index
)
{
recv_len
=
recv_total_index
-
uart
->
dma
.
last_recv_index
;
}
else
{
recv_len
=
uart
->
dma
.
setting_recv_len
-
uart
->
dma
.
last_recv_index
+
recv_total_index
;
uart
->
dma
.
last_recv_index
=
recv_total_index
;
}
uart
->
dma
.
last_recv_index
=
recv_total_index
;
rt_hw_serial_isr
(
serial
,
RT_SERIAL_EVENT_RX_DMADONE
|
(
recv_len
<<
8
));
/* start receive data */
DMA_ClearFlag
(
uart
->
dma
.
rx_stream
,
uart
->
dma
.
rx_flag
);
DMA_Cmd
(
uart
->
dma
.
rx_stream
,
ENABLE
);
}
}
/**
* Uart common interrupt process. This need add to uart ISR.
*
* @param serial serial device
*/
static
void
uart_isr
(
struct
rt_serial_device
*
serial
)
{
struct
stm32_uart
*
uart
=
(
struct
stm32_uart
*
)
serial
->
parent
.
user_data
;
RT_ASSERT
(
uart
!=
RT_NULL
);
if
(
USART_GetITStatus
(
uart
->
uart_device
,
USART_IT_RXNE
)
!=
RESET
)
{
rt_hw_serial_isr
(
serial
,
RT_SERIAL_EVENT_RX_IND
);
/* clear interrupt */
USART_ClearITPendingBit
(
uart
->
uart_device
,
USART_IT_RXNE
);
}
if
(
USART_GetITStatus
(
uart
->
uart_device
,
USART_IT_IDLE
)
!=
RESET
)
{
dma_uart_rx_idle_isr
(
serial
);
}
if
(
USART_GetITStatus
(
uart
->
uart_device
,
USART_IT_TC
)
!=
RESET
)
{
/* clear interrupt */
USART_ClearITPendingBit
(
uart
->
uart_device
,
USART_IT_TC
);
}
if
(
USART_GetFlagStatus
(
uart
->
uart_device
,
USART_FLAG_ORE
)
==
SET
)
{
stm32_getc
(
serial
);
}
}
static
const
struct
rt_uart_ops
stm32_uart_ops
=
{
stm32_configure
,
...
...
@@ -163,26 +325,32 @@ struct stm32_uart uart1 =
{
USART1
,
USART1_IRQn
,
{
DMA2_Stream5
,
DMA_Channel_4
,
DMA_FLAG_TCIF5
,
DMA2_Stream5_IRQn
,
0
,
},
};
struct
rt_serial_device
serial1
;
void
USART1_IRQHandler
(
void
)
{
struct
stm32_uart
*
uart
;
/* enter interrupt */
rt_interrupt_enter
();
uart
=
&
uart1
;
uart_isr
(
&
serial1
);
/* leave interrupt */
rt_interrupt_leave
();
}
void
DMA2_Stream5_IRQHandler
(
void
)
{
/* enter interrupt */
rt_interrupt_enter
();
if
(
USART_GetITStatus
(
uart
->
uart_device
,
USART_IT_RXNE
)
!=
RESET
)
{
rt_hw_serial_isr
(
&
serial1
,
RT_SERIAL_EVENT_RX_IND
);
}
if
(
USART_GetITStatus
(
uart
->
uart_device
,
USART_IT_TC
)
!=
RESET
)
{
/* clear interrupt */
USART_ClearITPendingBit
(
uart
->
uart_device
,
USART_IT_TC
);
}
dma_rx_done_isr
(
&
serial1
);
/* leave interrupt */
rt_interrupt_leave
();
...
...
@@ -195,26 +363,33 @@ struct stm32_uart uart2 =
{
USART2
,
USART2_IRQn
,
{
DMA1_Stream5
,
DMA_Channel_4
,
DMA_FLAG_TCIF5
,
DMA1_Stream5_IRQn
,
0
,
0
,
},
};
struct
rt_serial_device
serial2
;
void
USART2_IRQHandler
(
void
)
{
struct
stm32_uart
*
uart
;
/* enter interrupt */
rt_interrupt_enter
();
uart
=
&
uart2
;
uart
_isr
(
&
serial2
)
;
/* leave interrupt */
rt_interrupt_leave
();
}
void
DMA1_Stream5_IRQHandler
(
void
)
{
/* enter interrupt */
rt_interrupt_enter
();
if
(
USART_GetITStatus
(
uart
->
uart_device
,
USART_IT_RXNE
)
!=
RESET
)
{
rt_hw_serial_isr
(
&
serial2
,
RT_SERIAL_EVENT_RX_IND
);
}
if
(
USART_GetITStatus
(
uart
->
uart_device
,
USART_IT_TC
)
!=
RESET
)
{
/* clear interrupt */
USART_ClearITPendingBit
(
uart
->
uart_device
,
USART_IT_TC
);
}
dma_rx_done_isr
(
&
serial2
);
/* leave interrupt */
rt_interrupt_leave
();
...
...
@@ -227,31 +402,116 @@ struct stm32_uart uart3 =
{
USART3
,
USART3_IRQn
,
{
DMA1_Stream1
,
DMA_Channel_4
,
DMA_FLAG_TCIF1
,
DMA1_Stream1_IRQn
,
0
,
0
,
},
};
struct
rt_serial_device
serial3
;
void
USART3_IRQHandler
(
void
)
{
struct
stm32_uart
*
uart
;
/* enter interrupt */
rt_interrupt_enter
();
uart
=
&
uart3
;
uart_isr
(
&
serial3
);
/* leave interrupt */
rt_interrupt_leave
();
}
void
DMA1_Stream1_IRQHandler
(
void
)
{
/* enter interrupt */
rt_interrupt_enter
();
if
(
USART_GetITStatus
(
uart
->
uart_device
,
USART_IT_RXNE
)
!=
RESET
)
dma_rx_done_isr
(
&
serial3
);
/* leave interrupt */
rt_interrupt_leave
();
}
#endif
/* RT_USING_UART3 */
#if defined(RT_USING_UART4)
/* UART4 device driver structure */
struct
stm32_uart
uart4
=
{
UART4
,
UART4_IRQn
,
{
rt_hw_serial_isr
(
&
serial3
,
RT_SERIAL_EVENT_RX_IND
);
}
if
(
USART_GetITStatus
(
uart
->
uart_device
,
USART_IT_TC
)
!=
RESET
)
DMA1_Stream2
,
DMA_Channel_4
,
DMA_FLAG_TCIF2
,
DMA1_Stream2_IRQn
,
0
,
0
,
},
};
struct
rt_serial_device
serial4
;
void
UART4_IRQHandler
(
void
)
{
/* enter interrupt */
rt_interrupt_enter
();
uart_isr
(
&
serial4
);
/* leave interrupt */
rt_interrupt_leave
();
}
void
DMA1_Stream2_IRQHandler
(
void
)
{
/* enter interrupt */
rt_interrupt_enter
();
dma_rx_done_isr
(
&
serial4
);
/* leave interrupt */
rt_interrupt_leave
();
}
#endif
/* RT_USING_UART4 */
#if defined(RT_USING_UART5)
/* UART5 device driver structure */
struct
stm32_uart
uart5
=
{
UART5
,
UART5_IRQn
,
{
/* clear interrupt */
USART_ClearITPendingBit
(
uart
->
uart_device
,
USART_IT_TC
);
}
DMA1_Stream0
,
DMA_Channel_4
,
DMA_FLAG_TCIF0
,
DMA1_Stream0_IRQn
,
0
,
0
,
},
};
struct
rt_serial_device
serial5
;
void
UART5_IRQHandler
(
void
)
{
/* enter interrupt */
rt_interrupt_enter
();
uart_isr
(
&
serial5
);
/* leave interrupt */
rt_interrupt_leave
();
}
#endif
/* RT_USING_UART3 */
void
DMA1_Stream0_IRQHandler
(
void
)
{
/* enter interrupt */
rt_interrupt_enter
();
dma_rx_done_isr
(
&
serial5
);
/* leave interrupt */
rt_interrupt_leave
();
}
#endif
/* RT_USING_UART5 */
static
void
RCC_Configuration
(
void
)
{
...
...
@@ -275,6 +535,20 @@ static void RCC_Configuration(void)
/* Enable UART3 clock */
RCC_APB1PeriphClockCmd
(
RCC_APBPeriph_UART3
,
ENABLE
);
#endif
/* RT_USING_UART3 */
#ifdef RT_USING_UART4
/* Enable UART4 GPIO clocks */
RCC_AHB1PeriphClockCmd
(
UART4_GPIO_RCC
,
ENABLE
);
/* Enable UART4 clock */
RCC_APB1PeriphClockCmd
(
RCC_APBPeriph_UART4
,
ENABLE
);
#endif
/* RT_USING_UART4 */
#ifdef RT_USING_UART5
/* Enable UART5 GPIO clocks */
RCC_AHB1PeriphClockCmd
(
UART5_GPIO_RCC_TX
|
UART5_GPIO_RCC_RX
,
ENABLE
);
/* Enable UART5 clock */
RCC_APB1PeriphClockCmd
(
RCC_APBPeriph_UART5
,
ENABLE
);
#endif
/* RT_USING_UART5 */
}
static
void
GPIO_Configuration
(
void
)
...
...
@@ -315,6 +589,28 @@ static void GPIO_Configuration(void)
GPIO_PinAFConfig
(
UART3_GPIO
,
UART3_TX_PIN_SOURCE
,
GPIO_AF_USART3
);
GPIO_PinAFConfig
(
UART3_GPIO
,
UART3_RX_PIN_SOURCE
,
GPIO_AF_USART3
);
#endif
/* RT_USING_UART3 */
#ifdef RT_USING_UART4
/* Configure USART4 Rx/tx PIN */
GPIO_InitStructure
.
GPIO_Pin
=
UART4_GPIO_TX
|
UART4_GPIO_RX
;
GPIO_Init
(
UART4_GPIO
,
&
GPIO_InitStructure
);
/* Connect alternate function */
GPIO_PinAFConfig
(
UART4_GPIO
,
UART4_TX_PIN_SOURCE
,
GPIO_AF_UART4
);
GPIO_PinAFConfig
(
UART4_GPIO
,
UART4_RX_PIN_SOURCE
,
GPIO_AF_UART4
);
#endif
/* RT_USING_UART4 */
#ifdef RT_USING_UART5
/* Configure USART5 Rx/tx PIN */
GPIO_InitStructure
.
GPIO_Pin
=
UART5_GPIO_TX
;
GPIO_Init
(
UART5_TX
,
&
GPIO_InitStructure
);
GPIO_InitStructure
.
GPIO_Pin
=
UART5_GPIO_RX
;
GPIO_Init
(
UART5_RX
,
&
GPIO_InitStructure
);
/* Connect alternate function */
GPIO_PinAFConfig
(
UART5_TX
,
UART5_TX_PIN_SOURCE
,
GPIO_AF_UART5
);
GPIO_PinAFConfig
(
UART5_RX
,
UART5_RX_PIN_SOURCE
,
GPIO_AF_UART5
);
#endif
/* RT_USING_UART5 */
}
static
void
NVIC_Configuration
(
struct
stm32_uart
*
uart
)
...
...
@@ -329,6 +625,34 @@ static void NVIC_Configuration(struct stm32_uart *uart)
NVIC_Init
(
&
NVIC_InitStructure
);
}
static
void
DMA_Configuration
(
struct
rt_serial_device
*
serial
)
{
struct
stm32_uart
*
uart
=
(
struct
stm32_uart
*
)
serial
->
parent
.
user_data
;
struct
rt_serial_rx_fifo
*
rx_fifo
=
(
struct
rt_serial_rx_fifo
*
)
serial
->
serial_rx
;
NVIC_InitTypeDef
NVIC_InitStructure
;
/* enable transmit idle interrupt */
USART_ITConfig
(
uart
->
uart_device
,
USART_IT_IDLE
,
ENABLE
);
/* DMA clock enable */
RCC_AHB1PeriphClockCmd
(
RCC_AHB1Periph_DMA1
,
ENABLE
);
RCC_AHB1PeriphClockCmd
(
RCC_AHB1Periph_DMA2
,
ENABLE
);
/* rx dma config */
dma_uart_config
(
serial
,
serial
->
config
.
bufsz
,
rx_fifo
->
buffer
);
DMA_ClearFlag
(
uart
->
dma
.
rx_stream
,
uart
->
dma
.
rx_flag
);
DMA_ITConfig
(
uart
->
dma
.
rx_stream
,
DMA_IT_TC
,
ENABLE
);
USART_DMACmd
(
uart
->
uart_device
,
USART_DMAReq_Rx
,
ENABLE
);
DMA_Cmd
(
uart
->
dma
.
rx_stream
,
ENABLE
);
/* rx dma interrupt config */
NVIC_InitStructure
.
NVIC_IRQChannel
=
uart
->
dma
.
rx_irq_ch
;
NVIC_InitStructure
.
NVIC_IRQChannelPreemptionPriority
=
0
;
NVIC_InitStructure
.
NVIC_IRQChannelSubPriority
=
1
;
NVIC_InitStructure
.
NVIC_IRQChannelCmd
=
ENABLE
;
NVIC_Init
(
&
NVIC_InitStructure
);
}
int
stm32_hw_usart_init
(
void
)
{
struct
stm32_uart
*
uart
;
...
...
@@ -348,7 +672,7 @@ int stm32_hw_usart_init(void)
/* register UART1 device */
rt_hw_serial_register
(
&
serial1
,
"uart1"
,
RT_DEVICE_FLAG_RDWR
|
RT_DEVICE_FLAG_INT_RX
,
RT_DEVICE_FLAG_RDWR
|
RT_DEVICE_FLAG_INT_RX
|
RT_DEVICE_FLAG_DMA_RX
,
uart
);
#endif
/* RT_USING_UART1 */
...
...
@@ -363,7 +687,7 @@ int stm32_hw_usart_init(void)
/* register UART1 device */
rt_hw_serial_register
(
&
serial2
,
"uart2"
,
RT_DEVICE_FLAG_RDWR
|
RT_DEVICE_FLAG_INT_RX
,
RT_DEVICE_FLAG_RDWR
|
RT_DEVICE_FLAG_INT_RX
|
RT_DEVICE_FLAG_DMA_RX
,
uart
);
#endif
/* RT_USING_UART2 */
...
...
@@ -378,10 +702,39 @@ int stm32_hw_usart_init(void)
/* register UART3 device */
rt_hw_serial_register
(
&
serial3
,
"uart3"
,
RT_DEVICE_FLAG_RDWR
|
RT_DEVICE_FLAG_INT_RX
,
RT_DEVICE_FLAG_RDWR
|
RT_DEVICE_FLAG_INT_RX
|
RT_DEVICE_FLAG_DMA_RX
,
uart
);
#endif
/* RT_USING_UART3 */
#ifdef RT_USING_UART4
uart
=
&
uart4
;
serial4
.
ops
=
&
stm32_uart_ops
;
serial4
.
config
=
config
;
NVIC_Configuration
(
&
uart4
);
/* register UART4 device */
rt_hw_serial_register
(
&
serial4
,
"uart4"
,
RT_DEVICE_FLAG_RDWR
|
RT_DEVICE_FLAG_INT_RX
|
RT_DEVICE_FLAG_DMA_RX
,
uart
);
#endif
/* RT_USING_UART4 */
#ifdef RT_USING_UART5
uart
=
&
uart5
;
serial5
.
ops
=
&
stm32_uart_ops
;
serial5
.
config
=
config
;
NVIC_Configuration
(
&
uart5
);
/* register UART5 device */
rt_hw_serial_register
(
&
serial5
,
"uart5"
,
RT_DEVICE_FLAG_RDWR
|
RT_DEVICE_FLAG_INT_RX
|
RT_DEVICE_FLAG_DMA_RX
,
uart
);
#endif
/* RT_USING_UART5 */
return
0
;
}
INIT_BOARD_EXPORT
(
stm32_hw_usart_init
);
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