/* * 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 #include #include #include #include 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);