rt-thread/bsp/fm33lc026/libraries/HAL_Drivers/drv_usart.c

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/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-08-27 Jiao first version
*/
#include "drv_usart.h"
#include "drv_config.h"
#ifdef RT_USING_SERIAL
//#define DRV_DEBUG
#define LOG_TAG "drv.usart"
#include <drv_log.h>
enum
{
#ifdef BSP_USING_UART0
UART0_INDEX,
#endif
#ifdef BSP_USING_UART1
UART1_INDEX,
#endif
#ifdef BSP_USING_UART4
UART4_INDEX,
#endif
#ifdef BSP_USING_UART5
UART5_INDEX,
#endif
#ifdef BSP_USING_LPUART0
LPUART0_INDEX,
#endif
#ifdef BSP_USING_LPUART1
LPUART1_INDEX,
#endif
};
static struct _uart_config uart_config[] =
{
#ifdef BSP_USING_UART0
UART0_CONFIG,
#endif
#ifdef BSP_USING_UART1
UART1_CONFIG,
#endif
#ifdef BSP_USING_UART4
UART4_CONFIG,
#endif
#ifdef BSP_USING_UART5
UART5_CONFIG,
#endif
#ifdef BSP_USING_LPUART0
LPUART0_CONFIG,
#endif
#ifdef BSP_USING_LPUART1
LPUART1_CONFIG,
#endif
};
static struct _uart uart_obj[sizeof(uart_config) / sizeof(uart_config[0])] = {0};
static rt_err_t uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
extern FL_ErrorStatus FL_UART_GPIO_Init(UART_Type * UARTx);
struct _uart *uart;
RT_ASSERT(serial != RT_NULL);
RT_ASSERT(cfg != RT_NULL);
uart = rt_container_of(serial, struct _uart, serial);
if (FL_UART_GPIO_Init(uart->config->InitTypeDef) != FL_PASS)
{
return -RT_ERROR;
}
uart->handle.clockSrc = uart->config->clockSrc;
uart->handle.baudRate = cfg->baud_rate;
switch (cfg->data_bits)
{
case DATA_BITS_8:
uart->handle.dataWidth = FL_UART_DATA_WIDTH_8B;
break;
case DATA_BITS_9:
uart->handle.dataWidth = FL_UART_DATA_WIDTH_9B;
break;
default:
uart->handle.dataWidth = FL_UART_DATA_WIDTH_8B;
break;
}
switch (cfg->stop_bits)
{
case STOP_BITS_1:
uart->handle.stopBits = FL_UART_STOP_BIT_WIDTH_1B;
break;
case STOP_BITS_2:
uart->handle.stopBits = FL_UART_STOP_BIT_WIDTH_2B;
break;
default:
uart->handle.stopBits = FL_UART_STOP_BIT_WIDTH_1B;
break;
}
switch (cfg->parity)
{
case PARITY_NONE:
uart->handle.parity = FL_UART_PARITY_NONE;
break;
case PARITY_ODD:
uart->handle.parity = FL_UART_PARITY_ODD;
break;
case PARITY_EVEN:
uart->handle.parity = FL_UART_PARITY_EVEN;
break;
default:
uart->handle.parity = FL_UART_PARITY_NONE;
break;
}
uart->handle.transferDirection = FL_UART_DIRECTION_TX_RX;
if (FL_UART_Init(uart->config->InitTypeDef, &uart->handle) != FL_PASS)
{
return -RT_ERROR;
}
return RT_EOK;
}
static rt_err_t uart_control(struct rt_serial_device *serial, int cmd, void *arg)
{
struct _uart *uart;
#ifdef RT_SERIAL_USING_DMA
rt_ubase_t ctrl_arg = (rt_ubase_t)arg;
#endif
RT_ASSERT(serial != RT_NULL);
uart = rt_container_of(serial, struct _uart, serial);
switch (cmd)
{
/* disable interrupt */
case RT_DEVICE_CTRL_CLR_INT:
/* disable rx irq */
NVIC_DisableIRQ(uart->config->irq_type);
/* disable interrupt */
FL_UART_DisableIT_RXBuffFull(uart->config->InitTypeDef);
break;
/* enable interrupt */
case RT_DEVICE_CTRL_SET_INT:
/* enable rx irq */
NVIC_SetPriority(uart->config->irq_type, 1);
NVIC_EnableIRQ(uart->config->irq_type);
/* enable interrupt */
FL_UART_EnableIT_RXBuffFull(uart->config->InitTypeDef);
break;
#ifdef RT_SERIAL_USING_DMA
case RT_DEVICE_CTRL_CONFIG:
stm32_dma_config(serial, ctrl_arg);
break;
#endif
case RT_DEVICE_CTRL_CLOSE:
if (FL_UART_DeInit(uart->config->InitTypeDef) != FL_PASS)
{
RT_ASSERT(0)
}
break;
}
return RT_EOK;
}
static int uart_putc(struct rt_serial_device *serial, char c)
{
struct _uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = rt_container_of(serial, struct _uart, serial);
FL_UART_WriteTXBuff(uart->config->InitTypeDef, c); //<2F><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
while (FL_SET != FL_UART_IsActiveFlag_TXShiftBuffEmpty(uart->config->InitTypeDef));
return 1;
}
static int uart_getc(struct rt_serial_device *serial)
{
int ch;
struct _uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = rt_container_of(serial, struct _uart, serial);
ch = -1;
if (FL_SET == FL_UART_IsActiveFlag_RXBuffFull(uart->config->InitTypeDef))
{
ch = FL_UART_ReadRXBuff(uart->config->InitTypeDef);//<2F><><EFBFBD><EFBFBD><EFBFBD>жϱ<D0B6>־<EFBFBD><D6BE>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD>ȡrxreg<65>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}
return ch;
}
/**
* Uart common interrupt process. This need add to uart ISR.
*
* @param serial serial device
*/
static void uart_isr(struct rt_serial_device *serial)
{
struct _uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = rt_container_of(serial, struct _uart, serial);
/* UART in mode Receiver -------------------------------------------------*/
if ((FL_ENABLE == FL_UART_IsEnabledIT_RXBuffFull(uart->config->InitTypeDef))
&& (FL_SET == FL_UART_IsActiveFlag_RXBuffFull(uart->config->InitTypeDef)))
{
rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
}
}
#if defined(BSP_USING_UART0)
void UART0_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&(uart_obj[UART0_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART1 */
#if defined(BSP_USING_UART1)
void UART1_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&(uart_obj[UART1_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART1 */
#if defined(BSP_USING_UART4)
void UART4_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&(uart_obj[UART4_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART4 */
#if defined(BSP_USING_UART5)
void UART5_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&(uart_obj[UART5_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART5 */
#if defined(BSP_USING_LPUART0)
void LPUART0_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&(uart_obj[LPUART0_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_LPUART0*/
#if defined(BSP_USING_LPUART1)
void LPUART1_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&(uart_obj[LPUART1_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_LPUART1*/
static const struct rt_uart_ops _uart_ops =
{
.configure = uart_configure,
.control = uart_control,
.putc = uart_putc,
.getc = uart_getc,
.dma_transmit = 0
};
int rt_hw_usart_init(void)
{
rt_size_t obj_num = sizeof(uart_obj) / sizeof(struct _uart);
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
rt_err_t result = 0;
for (int i = 0; i < obj_num; i++)
{
/* init UART object */
uart_obj[i].config = &uart_config[i];
uart_obj[i].serial.ops = &_uart_ops;
uart_obj[i].serial.config = config;
/* register UART device */
result = rt_hw_serial_register(&uart_obj[i].serial, uart_obj[i].config->name,
RT_DEVICE_FLAG_RDWR
| RT_DEVICE_FLAG_INT_RX
| RT_DEVICE_FLAG_INT_TX
| uart_obj[i].uart_dma_flag
, NULL);
RT_ASSERT(result == RT_EOK);
}
return result;
}
#endif /* RT_USING_SERIAL */