426 lines
10 KiB
C
426 lines
10 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2006-2021, RT-Thread Development Team
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: Apache-2.0
|
||
|
|
*
|
||
|
|
* Change Logs:
|
||
|
|
* Date Author Notes
|
||
|
|
* 2022-01-21 charlown first version
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <rtthread.h>
|
||
|
|
#include <rtdevice.h>
|
||
|
|
#include "board.h"
|
||
|
|
#include "drv_uart.h"
|
||
|
|
#include "ch32f20x_usart.h"
|
||
|
|
#include "ch32f20x_misc.h"
|
||
|
|
|
||
|
|
#ifdef BSP_USING_UART
|
||
|
|
|
||
|
|
#ifndef ITEM_NUM
|
||
|
|
#define ITEM_NUM(items) sizeof(items) / sizeof(items[0])
|
||
|
|
#endif
|
||
|
|
|
||
|
|
struct usart_device
|
||
|
|
{
|
||
|
|
struct rt_serial_device parent;
|
||
|
|
char *name;
|
||
|
|
USART_TypeDef *periph;
|
||
|
|
IRQn_Type irqn;
|
||
|
|
};
|
||
|
|
|
||
|
|
#ifdef BSP_USING_UART1
|
||
|
|
static struct usart_device usart_device1 =
|
||
|
|
{
|
||
|
|
.name = "uart1",
|
||
|
|
.periph = USART1,
|
||
|
|
.irqn = USART1_IRQn,
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef BSP_USING_UART2
|
||
|
|
static struct usart_device usart_device2 =
|
||
|
|
{
|
||
|
|
.name = "uart2",
|
||
|
|
.periph = USART2,
|
||
|
|
.irqn = USART2_IRQn,
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
#ifdef BSP_USING_UART3
|
||
|
|
static struct usart_device usart_device3 =
|
||
|
|
{
|
||
|
|
.name = "uart3",
|
||
|
|
.periph = USART3,
|
||
|
|
.irqn = USART3_IRQn,
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
#ifdef BSP_USING_UART4
|
||
|
|
static struct usart_device usart_device4 =
|
||
|
|
{
|
||
|
|
.name = "uart4",
|
||
|
|
.periph = UART4,
|
||
|
|
.irqn = UART4_IRQn,
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
#ifdef BSP_USING_UART5
|
||
|
|
static struct usart_device usart_device5 =
|
||
|
|
{
|
||
|
|
.name = "uart5",
|
||
|
|
.periph = UART5,
|
||
|
|
.irqn = UART5_IRQn,
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
#ifdef BSP_USING_UART6
|
||
|
|
static struct usart_device usart_device6 =
|
||
|
|
{
|
||
|
|
.name = "uart6",
|
||
|
|
.periph = UART6,
|
||
|
|
.irqn = UART6_IRQn,
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
#ifdef BSP_USING_UART7
|
||
|
|
static struct usart_device usart_device7 =
|
||
|
|
{
|
||
|
|
.name = "uart7",
|
||
|
|
.periph = UART7,
|
||
|
|
.irqn = UART7_IRQn,
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
#ifdef BSP_USING_UART8
|
||
|
|
static struct usart_device usart_device8 =
|
||
|
|
{
|
||
|
|
.name = "uart8",
|
||
|
|
.periph = UART8,
|
||
|
|
.irqn = UART8_IRQn,
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static rt_err_t ch32f2_usart_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
|
||
|
|
{
|
||
|
|
struct usart_device *usart_dev;
|
||
|
|
USART_InitTypeDef USART_InitStructure;
|
||
|
|
|
||
|
|
RT_ASSERT(serial != RT_NULL);
|
||
|
|
RT_ASSERT(cfg != RT_NULL);
|
||
|
|
|
||
|
|
usart_dev = (struct usart_device *)serial;
|
||
|
|
RT_ASSERT(usart_dev != RT_NULL);
|
||
|
|
|
||
|
|
ch32f2_usart_clock_and_io_init(usart_dev->periph);
|
||
|
|
|
||
|
|
USART_StructInit(&USART_InitStructure);
|
||
|
|
|
||
|
|
USART_InitStructure.USART_BaudRate = cfg->baud_rate;
|
||
|
|
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
|
||
|
|
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
|
||
|
|
|
||
|
|
switch (cfg->data_bits)
|
||
|
|
{
|
||
|
|
case DATA_BITS_8:
|
||
|
|
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case DATA_BITS_9:
|
||
|
|
USART_InitStructure.USART_WordLength = USART_WordLength_9b;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
switch (cfg->stop_bits)
|
||
|
|
{
|
||
|
|
case STOP_BITS_1:
|
||
|
|
USART_InitStructure.USART_StopBits = USART_StopBits_1;
|
||
|
|
break;
|
||
|
|
case STOP_BITS_2:
|
||
|
|
USART_InitStructure.USART_StopBits = USART_StopBits_2;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
USART_InitStructure.USART_StopBits = USART_StopBits_1;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
switch (cfg->parity)
|
||
|
|
{
|
||
|
|
case PARITY_NONE:
|
||
|
|
USART_InitStructure.USART_Parity = USART_Parity_No;
|
||
|
|
break;
|
||
|
|
case PARITY_ODD:
|
||
|
|
USART_InitStructure.USART_Parity = USART_Parity_Odd;
|
||
|
|
break;
|
||
|
|
case PARITY_EVEN:
|
||
|
|
USART_InitStructure.USART_Parity = USART_Parity_Even;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
USART_InitStructure.USART_Parity = USART_Parity_No;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
USART_Init(usart_dev->periph, &USART_InitStructure);
|
||
|
|
USART_Cmd(usart_dev->periph, ENABLE);
|
||
|
|
|
||
|
|
return RT_EOK;
|
||
|
|
}
|
||
|
|
|
||
|
|
static rt_err_t ch32f2_usart_control(struct rt_serial_device *serial, int cmd, void *arg)
|
||
|
|
{
|
||
|
|
struct usart_device *usart_dev;
|
||
|
|
|
||
|
|
NVIC_InitTypeDef NVIC_InitStruct;
|
||
|
|
|
||
|
|
RT_ASSERT(serial != RT_NULL);
|
||
|
|
|
||
|
|
usart_dev = (struct usart_device *)serial;
|
||
|
|
|
||
|
|
RT_ASSERT(usart_dev != RT_NULL);
|
||
|
|
|
||
|
|
NVIC_InitStruct.NVIC_IRQChannel = usart_dev->irqn;
|
||
|
|
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 2;
|
||
|
|
NVIC_InitStruct.NVIC_IRQChannelSubPriority = 1;
|
||
|
|
|
||
|
|
switch (cmd)
|
||
|
|
{
|
||
|
|
case RT_DEVICE_CTRL_CLR_INT:
|
||
|
|
NVIC_InitStruct.NVIC_IRQChannelCmd = DISABLE;
|
||
|
|
NVIC_Init(&NVIC_InitStruct);
|
||
|
|
USART_ITConfig(usart_dev->periph, USART_IT_RXNE, DISABLE);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case RT_DEVICE_CTRL_SET_INT:
|
||
|
|
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
|
||
|
|
NVIC_Init(&NVIC_InitStruct);
|
||
|
|
USART_ITConfig(usart_dev->periph, USART_IT_RXNE, ENABLE);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
return RT_EOK;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int ch32f2_usart_putc(struct rt_serial_device *serial, char ch)
|
||
|
|
{
|
||
|
|
struct usart_device *usart_dev;
|
||
|
|
|
||
|
|
RT_ASSERT(serial != RT_NULL);
|
||
|
|
|
||
|
|
usart_dev = (struct usart_device *)serial;
|
||
|
|
|
||
|
|
RT_ASSERT(usart_dev != RT_NULL);
|
||
|
|
|
||
|
|
USART_SendData(usart_dev->periph, (uint8_t)ch);
|
||
|
|
while (USART_GetFlagStatus(usart_dev->periph, USART_FLAG_TXE) == RESET)
|
||
|
|
;
|
||
|
|
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int ch32f2_usart_getc(struct rt_serial_device *serial)
|
||
|
|
{
|
||
|
|
struct usart_device *usart_dev;
|
||
|
|
int ch;
|
||
|
|
|
||
|
|
RT_ASSERT(serial != RT_NULL);
|
||
|
|
|
||
|
|
usart_dev = (struct usart_device *)serial;
|
||
|
|
|
||
|
|
RT_ASSERT(usart_dev != RT_NULL);
|
||
|
|
|
||
|
|
ch = -1;
|
||
|
|
if (RESET != USART_GetFlagStatus(usart_dev->periph, USART_FLAG_RXNE))
|
||
|
|
{
|
||
|
|
ch = USART_ReceiveData(usart_dev->periph) & 0xff;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ch;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct rt_uart_ops usart_ops = {
|
||
|
|
.configure = ch32f2_usart_configure,
|
||
|
|
.control = ch32f2_usart_control,
|
||
|
|
.putc = ch32f2_usart_putc,
|
||
|
|
.getc = ch32f2_usart_getc,
|
||
|
|
.dma_transmit = RT_NULL};
|
||
|
|
|
||
|
|
static void usart_isr(struct usart_device *usart_dev)
|
||
|
|
{
|
||
|
|
|
||
|
|
RT_ASSERT(usart_dev != RT_NULL);
|
||
|
|
|
||
|
|
if ((USART_GetITStatus(usart_dev->periph, USART_IT_RXNE) != RESET) && (RESET != USART_GetFlagStatus(usart_dev->periph, USART_FLAG_RXNE)))
|
||
|
|
{
|
||
|
|
rt_hw_serial_isr(&usart_dev->parent, RT_SERIAL_EVENT_RX_IND);
|
||
|
|
USART_ClearITPendingBit(usart_dev->periph, USART_IT_RXNE);
|
||
|
|
USART_ClearFlag(usart_dev->periph, USART_FLAG_RXNE);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (USART_GetFlagStatus(usart_dev->periph, USART_FLAG_CTS) != RESET)
|
||
|
|
{
|
||
|
|
USART_ClearFlag(usart_dev->periph, USART_FLAG_CTS);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (USART_GetFlagStatus(usart_dev->periph, USART_FLAG_LBD) != RESET)
|
||
|
|
{
|
||
|
|
USART_ClearFlag(usart_dev->periph, USART_FLAG_LBD);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (USART_GetFlagStatus(usart_dev->periph, USART_FLAG_TC) != RESET)
|
||
|
|
{
|
||
|
|
USART_ClearFlag(usart_dev->periph, USART_FLAG_TC);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef BSP_USING_UART1
|
||
|
|
void USART1_IRQHandler(void)
|
||
|
|
{
|
||
|
|
rt_interrupt_enter();
|
||
|
|
|
||
|
|
usart_isr(&usart_device1);
|
||
|
|
|
||
|
|
rt_interrupt_leave();
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
#ifdef BSP_USING_UART2
|
||
|
|
void USART2_IRQHandler(void)
|
||
|
|
{
|
||
|
|
rt_interrupt_enter();
|
||
|
|
|
||
|
|
usart_isr(&usart_device2);
|
||
|
|
|
||
|
|
rt_interrupt_leave();
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
#ifdef BSP_USING_UART3
|
||
|
|
void USART3_IRQHandler(void)
|
||
|
|
{
|
||
|
|
rt_interrupt_enter();
|
||
|
|
|
||
|
|
usart_isr(&usart_device3);
|
||
|
|
|
||
|
|
rt_interrupt_leave();
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
#ifdef BSP_USING_UART4
|
||
|
|
void USART4_IRQHandler(void)
|
||
|
|
{
|
||
|
|
rt_interrupt_enter();
|
||
|
|
|
||
|
|
usart_isr(&usart_device4);
|
||
|
|
|
||
|
|
rt_interrupt_leave();
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
#ifdef BSP_USING_UART5
|
||
|
|
void USART5_IRQHandler(void)
|
||
|
|
{
|
||
|
|
rt_interrupt_enter();
|
||
|
|
|
||
|
|
usart_isr(&usart_device5);
|
||
|
|
|
||
|
|
rt_interrupt_leave();
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
#ifdef BSP_USING_UART6
|
||
|
|
void USART6_IRQHandler(void)
|
||
|
|
{
|
||
|
|
rt_interrupt_enter();
|
||
|
|
|
||
|
|
usart_isr(&usart_device6);
|
||
|
|
|
||
|
|
rt_interrupt_leave();
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
#ifdef BSP_USING_UART7
|
||
|
|
void USART7_IRQHandler(void)
|
||
|
|
{
|
||
|
|
rt_interrupt_enter();
|
||
|
|
|
||
|
|
usart_isr(&usart_device7);
|
||
|
|
|
||
|
|
rt_interrupt_leave();
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
#ifdef BSP_USING_UART8
|
||
|
|
void USART8_IRQHandler(void)
|
||
|
|
{
|
||
|
|
rt_interrupt_enter();
|
||
|
|
|
||
|
|
usart_isr(&usart_device8);
|
||
|
|
|
||
|
|
rt_interrupt_leave();
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
int rt_hw_uart_init(void)
|
||
|
|
{
|
||
|
|
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
|
||
|
|
|
||
|
|
#ifdef BSP_USING_UART1
|
||
|
|
usart_device1.parent.ops = &usart_ops;
|
||
|
|
usart_device1.parent.config = config;
|
||
|
|
rt_hw_serial_register(&usart_device1.parent, usart_device1.name,
|
||
|
|
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_INT_TX,
|
||
|
|
RT_NULL);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef BSP_USING_UART2
|
||
|
|
usart_device2.parent.ops = &usart_ops;
|
||
|
|
usart_device2.parent.config = config;
|
||
|
|
rt_hw_serial_register(&usart_device2.parent, usart_device2.name,
|
||
|
|
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_INT_TX,
|
||
|
|
RT_NULL);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef BSP_USING_UART3
|
||
|
|
usart_device3.parent.ops = &usart_ops;
|
||
|
|
usart_device3.parent.config = config;
|
||
|
|
rt_hw_serial_register(&usart_device3.parent, usart_device3.name,
|
||
|
|
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_INT_TX,
|
||
|
|
RT_NULL);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef BSP_USING_UART4
|
||
|
|
usart_device4.parent.ops = &usart_ops;
|
||
|
|
usart_device4.parent.config = config;
|
||
|
|
rt_hw_serial_register(&usart_device4.parent, usart_device4.name,
|
||
|
|
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_INT_TX,
|
||
|
|
RT_NULL);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef BSP_USING_UART5
|
||
|
|
usart_device5.parent.ops = &usart_ops;
|
||
|
|
usart_device5.parent.config = config;
|
||
|
|
rt_hw_serial_register(&usart_device5.parent, usart_device5.name,
|
||
|
|
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_INT_TX,
|
||
|
|
RT_NULL);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef BSP_USING_UART6
|
||
|
|
usart_device6.parent.ops = &usart_ops;
|
||
|
|
usart_device6.parent.config = config;
|
||
|
|
rt_hw_serial_register(&usart_device6.parent, usart_device6.name,
|
||
|
|
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_INT_TX,
|
||
|
|
RT_NULL);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef BSP_USING_UART7
|
||
|
|
usart_device7.parent.ops = &usart_ops;
|
||
|
|
usart_device7.parent.config = config;
|
||
|
|
rt_hw_serial_register(&usart_device7.parent, usart_device7.name,
|
||
|
|
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_INT_TX,
|
||
|
|
RT_NULL);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef BSP_USING_UART8
|
||
|
|
usart_device8.parent.ops = &usart_ops;
|
||
|
|
usart_device8.parent.config = config;
|
||
|
|
rt_hw_serial_register(&usart_device8.parent, usart_device8.name,
|
||
|
|
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_INT_TX,
|
||
|
|
RT_NULL);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
return RT_EOK;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* BSP_USING_UART */
|