261 lines
7.0 KiB
C
261 lines
7.0 KiB
C
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/*
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* Copyright (c) 2006-2018, Synwit Technology Co.,Ltd.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2018-05-31 ZYH first version
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* 2018-12-10 Zohar_Lee format file
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include <board.h>
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#include <SWM320_port.h>
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#include <SWM320_uart.h>
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struct swm320_uart
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{
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UART_TypeDef *uart;
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IRQn_Type irq;
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};
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static rt_err_t swm320_uart_configure(struct rt_serial_device *serial,
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struct serial_configure *cfg)
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{
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struct swm320_uart *uart;
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UART_InitStructure UART_initStruct;
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RT_ASSERT(serial != RT_NULL);
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RT_ASSERT(cfg != RT_NULL);
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uart = (struct swm320_uart *)serial->parent.user_data;
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NVIC_DisableIRQ(uart->irq);
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UART_initStruct.Baudrate = cfg->baud_rate;
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UART_initStruct.RXThreshold = 1;
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UART_initStruct.RXThresholdIEn = 1;
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UART_initStruct.TXThresholdIEn = 0;
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UART_initStruct.TimeoutTime = 10;
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UART_initStruct.TimeoutIEn = 0;
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switch (cfg->data_bits)
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{
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case DATA_BITS_9:
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UART_initStruct.DataBits = UART_DATA_9BIT;
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break;
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default:
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UART_initStruct.DataBits = UART_DATA_8BIT;
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break;
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}
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switch (cfg->stop_bits)
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{
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case STOP_BITS_2:
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UART_initStruct.StopBits = UART_STOP_2BIT;
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break;
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default:
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UART_initStruct.StopBits = UART_STOP_1BIT;
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break;
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}
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switch (cfg->parity)
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{
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case PARITY_ODD:
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UART_initStruct.Parity = UART_PARITY_ODD;
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break;
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case PARITY_EVEN:
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UART_initStruct.Parity = UART_PARITY_EVEN;
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break;
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default:
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UART_initStruct.Parity = UART_PARITY_NONE;
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break;
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}
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UART_Init(uart->uart, &UART_initStruct);
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UART_Open(uart->uart);
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return RT_EOK;
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}
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static rt_err_t swm320_uart_control(struct rt_serial_device *serial,
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int cmd, void *arg)
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{
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struct swm320_uart *uart;
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RT_ASSERT(serial != RT_NULL);
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uart = (struct swm320_uart *)serial->parent.user_data;
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switch (cmd)
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{
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case RT_DEVICE_CTRL_CLR_INT:
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/* disable rx irq */
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NVIC_DisableIRQ(uart->irq);
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break;
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case RT_DEVICE_CTRL_SET_INT:
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/* enable rx irq */
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NVIC_EnableIRQ(uart->irq);
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break;
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}
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return RT_EOK;
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}
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static int swm320_uart_putc(struct rt_serial_device *serial, char c)
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{
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struct swm320_uart *uart;
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RT_ASSERT(serial != RT_NULL);
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uart = (struct swm320_uart *)serial->parent.user_data;
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while (UART_IsTXBusy(uart->uart));
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uart->uart->DATA = c;
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return 1;
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}
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static int swm320_uart_getc(struct rt_serial_device *serial)
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{
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int ch;
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struct swm320_uart *uart;
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RT_ASSERT(serial != RT_NULL);
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uart = (struct swm320_uart *)serial->parent.user_data;
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ch = -1;
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if (UART_IsRXFIFOEmpty(uart->uart) == 0)
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{
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UART_ReadByte(uart->uart, (uint32_t *)&ch);
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}
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return ch;
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}
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static const struct rt_uart_ops swm320_uart_ops =
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{
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swm320_uart_configure,
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swm320_uart_control,
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swm320_uart_putc,
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swm320_uart_getc,
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};
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#if defined(BSP_USING_UART0)
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/* UART0 device driver structure */
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static struct swm320_uart uart0;
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static struct rt_serial_device serial0;
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void UART0_Handler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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/* UART in mode Receiver */
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if (UART_INTRXThresholdStat(uart0.uart) || UART_INTTimeoutStat(uart0.uart))
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{
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rt_hw_serial_isr(&serial0, RT_SERIAL_EVENT_RX_IND);
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}
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/* leave interrupt */
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rt_interrupt_leave();
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}
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#endif /* BSP_USING_UART0 */
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#if defined(BSP_USING_UART1)
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/* UART1 device driver structure */
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static struct swm320_uart uart1;
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static struct rt_serial_device serial1;
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void UART1_Handler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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/* UART in mode Receiver */
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if (UART_INTRXThresholdStat(uart1.uart) || UART_INTTimeoutStat(uart1.uart))
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{
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rt_hw_serial_isr(&serial1, RT_SERIAL_EVENT_RX_IND);
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}
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/* leave interrupt */
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rt_interrupt_leave();
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}
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#endif /* BSP_USING_UART1 */
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#if defined(BSP_USING_UART2)
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/* UART2 device driver structure */
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static struct swm320_uart uart2;
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static struct rt_serial_device serial2;
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void UART2_Handler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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/* UART in mode Receiver */
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if (UART_INTRXThresholdStat(uart2.uart) || UART_INTTimeoutStat(uart2.uart))
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{
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rt_hw_serial_isr(&serial2, RT_SERIAL_EVENT_RX_IND);
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}
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/* leave interrupt */
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rt_interrupt_leave();
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}
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#endif /* BSP_USING_UART2 */
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#if defined(BSP_USING_UART3)
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/* UART3 device driver structure */
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static struct swm320_uart uart3;
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static struct rt_serial_device serial3;
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void UART3_Handler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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/* UART in mode Receiver */
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if (UART_INTRXThresholdStat(uart3.uart) || UART_INTTimeoutStat(uart3.uart))
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{
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rt_hw_serial_isr(&serial3, RT_SERIAL_EVENT_RX_IND);
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}
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/* leave interrupt */
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rt_interrupt_leave();
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}
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#endif /* BSP_USING_UART3 */
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int rt_hw_uart_init(void)
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{
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struct swm320_uart *uart;
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struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
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#ifdef BSP_USING_UART0
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PORT_Init(PORTA, PIN2, FUNMUX0_UART0_RXD, 1);
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PORT_Init(PORTA, PIN3, FUNMUX1_UART0_TXD, 0);
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uart = &uart0;
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uart->uart = UART0;
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uart->irq = UART0_IRQn;
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serial0.ops = &swm320_uart_ops;
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serial0.config = config;
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/* register UART0 device */
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rt_hw_serial_register(&serial0, "uart0",
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RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
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uart);
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#endif /* BSP_USING_UART0 */
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#ifdef BSP_USING_UART1
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PORT_Init(PORTC, PIN2, FUNMUX0_UART1_RXD, 1);
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PORT_Init(PORTC, PIN3, FUNMUX1_UART1_TXD, 0);
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uart = &uart1;
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uart->uart = UART1;
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uart->irq = UART1_IRQn;
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serial1.ops = &swm320_uart_ops;
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serial1.config = config;
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/* register UART1 device */
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rt_hw_serial_register(&serial1, "uart1",
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RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
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uart);
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#endif /* BSP_USING_UART1 */
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#ifdef BSP_USING_UART2
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PORT_Init(PORTC, PIN4, FUNMUX0_UART2_RXD, 1);
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PORT_Init(PORTC, PIN5, FUNMUX1_UART2_TXD, 0);
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uart = &uart2;
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uart->uart = UART2;
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uart->irq = UART2_IRQn;
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serial2.ops = &swm320_uart_ops;
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serial2.config = config;
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/* register UART2 device */
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rt_hw_serial_register(&serial2, "uart2",
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RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
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uart);
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#endif /* BSP_USING_UART2 */
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#ifdef BSP_USING_UART3
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PORT_Init(PORTC, PIN6, FUNMUX0_UART3_RXD, 1);
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PORT_Init(PORTC, PIN7, FUNMUX1_UART3_TXD, 0);
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uart = &uart3;
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uart->uart = UART3;
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uart->irq = UART3_IRQn;
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serial3.ops = &swm320_uart_ops;
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serial3.config = config;
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/* register UART3 device */
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rt_hw_serial_register(&serial3, "uart3",
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RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
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uart);
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#endif /* BSP_USING_UART3 */
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return 0;
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}
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INIT_BOARD_EXPORT(rt_hw_uart_init);
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