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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
*/
#include <rtthread.h>
#include <rtdevice.h>
#include <board.h>
#include <SWM320_port.h>
#include <SWM320_uart.h>
struct swm320_uart
{
UART_TypeDef *uart;
IRQn_Type irq;
};
static rt_err_t swm320_uart_configure(struct rt_serial_device *serial,
struct serial_configure *cfg)
{
struct swm320_uart *uart;
UART_InitStructure UART_initStruct;
RT_ASSERT(serial != RT_NULL);
RT_ASSERT(cfg != RT_NULL);
uart = (struct swm320_uart *)serial->parent.user_data;
NVIC_DisableIRQ(uart->irq);
UART_initStruct.Baudrate = cfg->baud_rate;
UART_initStruct.RXThreshold = 1;
UART_initStruct.RXThresholdIEn = 1;
UART_initStruct.TXThresholdIEn = 0;
UART_initStruct.TimeoutTime = 10;
UART_initStruct.TimeoutIEn = 0;
switch (cfg->data_bits)
{
case DATA_BITS_9:
UART_initStruct.DataBits = UART_DATA_9BIT;
break;
default:
UART_initStruct.DataBits = UART_DATA_8BIT;
break;
}
switch (cfg->stop_bits)
{
case STOP_BITS_2:
UART_initStruct.StopBits = UART_STOP_2BIT;
break;
default:
UART_initStruct.StopBits = UART_STOP_1BIT;
break;
}
switch (cfg->parity)
{
case PARITY_ODD:
UART_initStruct.Parity = UART_PARITY_ODD;
break;
case PARITY_EVEN:
UART_initStruct.Parity = UART_PARITY_EVEN;
break;
default:
UART_initStruct.Parity = UART_PARITY_NONE;
break;
}
UART_Init(uart->uart, &UART_initStruct);
UART_Open(uart->uart);
return RT_EOK;
}
static rt_err_t swm320_uart_control(struct rt_serial_device *serial,
int cmd, void *arg)
{
struct swm320_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct swm320_uart *)serial->parent.user_data;
switch (cmd)
{
case RT_DEVICE_CTRL_CLR_INT:
/* disable rx irq */
NVIC_DisableIRQ(uart->irq);
break;
case RT_DEVICE_CTRL_SET_INT:
/* enable rx irq */
NVIC_EnableIRQ(uart->irq);
break;
}
return RT_EOK;
}
static int swm320_uart_putc(struct rt_serial_device *serial, char c)
{
struct swm320_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct swm320_uart *)serial->parent.user_data;
while (UART_IsTXBusy(uart->uart));
uart->uart->DATA = c;
return 1;
}
static int swm320_uart_getc(struct rt_serial_device *serial)
{
int ch;
struct swm320_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct swm320_uart *)serial->parent.user_data;
ch = -1;
if (UART_IsRXFIFOEmpty(uart->uart) == 0)
{
UART_ReadByte(uart->uart, (uint32_t *)&ch);
}
return ch;
}
static const struct rt_uart_ops swm320_uart_ops =
{
swm320_uart_configure,
swm320_uart_control,
swm320_uart_putc,
swm320_uart_getc,
};
#if defined(BSP_USING_UART0)
/* UART0 device driver structure */
static struct swm320_uart uart0;
static struct rt_serial_device serial0;
void UART0_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
/* UART in mode Receiver */
if (UART_INTRXThresholdStat(uart0.uart) || UART_INTTimeoutStat(uart0.uart))
{
rt_hw_serial_isr(&serial0, RT_SERIAL_EVENT_RX_IND);
}
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART0 */
#if defined(BSP_USING_UART1)
/* UART1 device driver structure */
static struct swm320_uart uart1;
static struct rt_serial_device serial1;
void UART1_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
/* UART in mode Receiver */
if (UART_INTRXThresholdStat(uart1.uart) || UART_INTTimeoutStat(uart1.uart))
{
rt_hw_serial_isr(&serial1, RT_SERIAL_EVENT_RX_IND);
}
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART1 */
#if defined(BSP_USING_UART2)
/* UART2 device driver structure */
static struct swm320_uart uart2;
static struct rt_serial_device serial2;
void UART2_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
/* UART in mode Receiver */
if (UART_INTRXThresholdStat(uart2.uart) || UART_INTTimeoutStat(uart2.uart))
{
rt_hw_serial_isr(&serial2, RT_SERIAL_EVENT_RX_IND);
}
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART2 */
#if defined(BSP_USING_UART3)
/* UART3 device driver structure */
static struct swm320_uart uart3;
static struct rt_serial_device serial3;
void UART3_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
/* UART in mode Receiver */
if (UART_INTRXThresholdStat(uart3.uart) || UART_INTTimeoutStat(uart3.uart))
{
rt_hw_serial_isr(&serial3, RT_SERIAL_EVENT_RX_IND);
}
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART3 */
int rt_hw_uart_init(void)
{
struct swm320_uart *uart;
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
#ifdef BSP_USING_UART0
PORT_Init(PORTA, PIN2, FUNMUX0_UART0_RXD, 1);
PORT_Init(PORTA, PIN3, FUNMUX1_UART0_TXD, 0);
uart = &uart0;
uart->uart = UART0;
uart->irq = UART0_IRQn;
serial0.ops = &swm320_uart_ops;
serial0.config = config;
/* register UART0 device */
rt_hw_serial_register(&serial0, "uart0",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
uart);
#endif /* BSP_USING_UART0 */
#ifdef BSP_USING_UART1
PORT_Init(PORTC, PIN2, FUNMUX0_UART1_RXD, 1);
PORT_Init(PORTC, PIN3, FUNMUX1_UART1_TXD, 0);
uart = &uart1;
uart->uart = UART1;
uart->irq = UART1_IRQn;
serial1.ops = &swm320_uart_ops;
serial1.config = config;
/* register UART1 device */
rt_hw_serial_register(&serial1, "uart1",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
uart);
#endif /* BSP_USING_UART1 */
#ifdef BSP_USING_UART2
PORT_Init(PORTC, PIN4, FUNMUX0_UART2_RXD, 1);
PORT_Init(PORTC, PIN5, FUNMUX1_UART2_TXD, 0);
uart = &uart2;
uart->uart = UART2;
uart->irq = UART2_IRQn;
serial2.ops = &swm320_uart_ops;
serial2.config = config;
/* register UART2 device */
rt_hw_serial_register(&serial2, "uart2",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
uart);
#endif /* BSP_USING_UART2 */
#ifdef BSP_USING_UART3
PORT_Init(PORTC, PIN6, FUNMUX0_UART3_RXD, 1);
PORT_Init(PORTC, PIN7, FUNMUX1_UART3_TXD, 0);
uart = &uart3;
uart->uart = UART3;
uart->irq = UART3_IRQn;
serial3.ops = &swm320_uart_ops;
serial3.config = config;
/* register UART3 device */
rt_hw_serial_register(&serial3, "uart3",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
uart);
#endif /* BSP_USING_UART3 */
return 0;
}
INIT_BOARD_EXPORT(rt_hw_uart_init);
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