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rt-thread-official/bsp/swm320-lq100/drivers/drv_uart.c

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/*
* Copyright (c) 2006-2018, Synwit Technology Co.,Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2018-05-31 ZYH first version
* 2018-12-10 Zohar_Lee format file
* 2020-07-10 lik format file
*/
#include "drv_uart.h"
#ifdef RT_USING_SERIAL
#ifdef BSP_USING_UART
//#define DRV_DEBUG
#define LOG_TAG "drv.uart"
#include <drv_log.h>
#if !defined(BSP_USING_UART0) && !defined(BSP_USING_UART1) && !defined(BSP_USING_UART2) && \
!defined(BSP_USING_UART3)
#error "Please define at least one BSP_USING_UARTx"
/* this driver can be disabled at menuconfig -> RT-Thread Components -> Device Drivers */
#endif
enum
{
#ifdef BSP_USING_UART0
UART0_INDEX,
#endif
#ifdef BSP_USING_UART1
UART1_INDEX,
#endif
#ifdef BSP_USING_UART2
UART2_INDEX,
#endif
#ifdef BSP_USING_UART3
UART3_INDEX,
#endif
};
static struct swm_uart_cfg uart_cfg[] =
{
#ifdef BSP_USING_UART0
UART0_CFG,
#endif
#ifdef BSP_USING_UART1
UART1_CFG,
#endif
#ifdef BSP_USING_UART2
UART2_CFG,
#endif
#ifdef BSP_USING_UART3
UART3_CFG,
#endif
};
static struct swm_uart uart_drv[sizeof(uart_cfg) / sizeof(uart_cfg[0])] = {0};
static rt_err_t swm_uart_init(struct rt_serial_device *serial_device, struct serial_configure *configure)
{
struct swm_uart_cfg *cfg;
RT_ASSERT(serial_device != RT_NULL);
RT_ASSERT(configure != RT_NULL);
cfg = serial_device->parent.user_data;
cfg->uart_initstruct.Baudrate = configure->baud_rate;
switch (configure->data_bits)
{
case DATA_BITS_8:
cfg->uart_initstruct.DataBits = UART_DATA_8BIT;
break;
case DATA_BITS_9:
cfg->uart_initstruct.DataBits = UART_DATA_9BIT;
break;
default:
cfg->uart_initstruct.DataBits = UART_DATA_8BIT;
break;
}
switch (configure->stop_bits)
{
case STOP_BITS_1:
cfg->uart_initstruct.StopBits = UART_STOP_1BIT;
break;
case STOP_BITS_2:
cfg->uart_initstruct.StopBits = UART_STOP_2BIT;
break;
default:
cfg->uart_initstruct.StopBits = UART_STOP_1BIT;
break;
}
switch (configure->parity)
{
case PARITY_NONE:
cfg->uart_initstruct.Parity = UART_PARITY_NONE;
break;
case PARITY_ODD:
cfg->uart_initstruct.Parity = UART_PARITY_ODD;
break;
case PARITY_EVEN:
cfg->uart_initstruct.Parity = UART_PARITY_EVEN;
break;
default:
cfg->uart_initstruct.Parity = UART_PARITY_NONE;
break;
}
switch ((uint32_t)cfg->UARTx)
{
case ((uint32_t)UART0):
PORT_Init(PORTA, PIN2, FUNMUX0_UART0_RXD, 1);
PORT_Init(PORTA, PIN3, FUNMUX1_UART0_TXD, 0);
break;
case ((uint32_t)UART1):
PORT_Init(PORTC, PIN2, FUNMUX0_UART1_RXD, 1);
PORT_Init(PORTC, PIN3, FUNMUX1_UART1_TXD, 0);
break;
case ((uint32_t)UART2):
PORT_Init(PORTC, PIN4, FUNMUX0_UART2_RXD, 1);
PORT_Init(PORTC, PIN5, FUNMUX1_UART2_TXD, 0);
break;
case ((uint32_t)UART3):
PORT_Init(PORTC, PIN6, FUNMUX0_UART3_RXD, 1);
PORT_Init(PORTC, PIN7, FUNMUX1_UART3_TXD, 0);
break;
default:
break;
}
UART_Init(cfg->UARTx, &(cfg->uart_initstruct));
UART_Open(cfg->UARTx);
return RT_EOK;
}
static rt_err_t swm_uart_control(struct rt_serial_device *serial_device, int cmd, void *arg)
{
struct swm_uart_cfg *cfg;
RT_ASSERT(serial_device != RT_NULL);
cfg = serial_device->parent.user_data;
switch (cmd)
{
case RT_DEVICE_CTRL_CLR_INT:
/* disable rx irq */
NVIC_DisableIRQ(cfg->irq);
break;
case RT_DEVICE_CTRL_SET_INT:
/* enable rx irq */
NVIC_EnableIRQ(cfg->irq);
break;
}
return RT_EOK;
}
static int swm_uart_putc(struct rt_serial_device *serial_device, char c)
{
struct swm_uart_cfg *cfg;
RT_ASSERT(serial_device != RT_NULL);
cfg = serial_device->parent.user_data;
while (UART_IsTXFIFOFull(cfg->UARTx))
;
UART_WriteByte(cfg->UARTx, c);
while (UART_IsTXBusy(cfg->UARTx))
;
return 1;
}
static int swm_uart_getc(struct rt_serial_device *serial_device)
{
int ch;
struct swm_uart_cfg *cfg;
RT_ASSERT(serial_device != RT_NULL);
cfg = serial_device->parent.user_data;
ch = -1;
if (UART_IsRXFIFOEmpty(cfg->UARTx) == 0)
{
UART_ReadByte(cfg->UARTx, (uint32_t *)&ch);
}
return ch;
}
static const struct rt_uart_ops swm_uart_ops =
{
.configure = swm_uart_init,
.control = swm_uart_control,
.putc = swm_uart_putc,
.getc = swm_uart_getc,
.dma_transmit = RT_NULL};
/**
* Uart common interrupt process. This need add to uart ISR.
*
* @param serial serial device
*/
static void rt_hw_uart_isr(struct rt_serial_device *serial_device)
{
struct swm_uart_cfg *cfg;
RT_ASSERT(serial_device != RT_NULL);
cfg = serial_device->parent.user_data;
/* UART in mode Receiver -------------------------------------------------*/
if (UART_INTRXThresholdStat(cfg->UARTx) || UART_INTTimeoutStat(cfg->UARTx))
{
rt_hw_serial_isr(serial_device, RT_SERIAL_EVENT_RX_IND);
}
}
#if defined(BSP_USING_UART0)
void UART0_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_hw_uart_isr(&(uart_drv[UART0_INDEX].serial_device));
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART0 */
#if defined(BSP_USING_UART1)
void UART1_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_hw_uart_isr(&(uart_drv[UART1_INDEX].serial_device));
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART1 */
#if defined(BSP_USING_UART2)
void UART2_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_hw_uart_isr(&(uart_drv[UART2_INDEX].serial_device));
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART2 */
#if defined(BSP_USING_UART3)
void UART3_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_hw_uart_isr(&(uart_drv[UART3_INDEX].serial_device));
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART3 */
int rt_hw_uart_init(void)
{
struct serial_configure cfg = RT_SERIAL_CONFIG_DEFAULT;
int i = 0;
rt_err_t result = RT_EOK;
for (i = 0; i < sizeof(uart_cfg) / sizeof(uart_cfg[0]); i++)
{
uart_drv[i].cfg = &uart_cfg[i];
uart_drv[i].serial_device.ops = &swm_uart_ops;
uart_drv[i].serial_device.config = cfg;
/* register UART device */
result = rt_hw_serial_register(&uart_drv[i].serial_device, uart_drv[i].cfg->name,
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX, uart_drv[i].cfg);
RT_ASSERT(result == RT_EOK);
}
return result;
}
INIT_BOARD_EXPORT(rt_hw_uart_init);
#endif /* BSP_USING_UART */
#endif /* RT_USING_SERIAL */
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