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259 lines
6.0 KiB
259 lines
6.0 KiB
5 months ago
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/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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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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* 2023-07-15 yby the first version
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*/
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#include "drv_uart.h"
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#ifdef RT_USING_SERIAL
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#include "uart_config.h"
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#include "interrupt.h"
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#include "uart.h"
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#define LOG_TAG "drv.uart"
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#include <drv_log.h>
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#if !defined(BSP_USING_UART0)&&!defined(BSP_USING_UART1)&&!defined(BSP_USING_UART2)&&!defined(BSP_USING_UART3)
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#error "Please define at least one BSP_USING_UARTx"
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#endif
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enum
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{
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#ifdef BSP_USING_UART0
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UART0_INDEX,
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#endif
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#ifdef BSP_USING_UART1
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UART1_INDEX,
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#endif
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#ifdef BSP_USING_UART2
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UART2_INDEX,
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#endif
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#ifdef BSP_USING_UART3
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UART3_INDEX,
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#endif
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};
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uint32_t uart_intbase[] =
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{
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#ifdef BSP_USING_UART0
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INT_UART0,
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#endif
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#ifdef BSP_USING_UART1
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INT_UART1,
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#endif
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#ifdef BSP_USING_UART2
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INT_UART2,
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#endif
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#ifdef BSP_USING_UART3
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INT_UART3
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#endif
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};
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static struct msp432_uart_config uart_config[] =
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{
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#ifdef BSP_USING_UART0
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UART0_CONFIG,
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#endif
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#ifdef BSP_USING_UART1
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UART1_CONFIG,
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#endif
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#ifdef BSP_USING_UART2
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UART2_CONFIG,
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#endif
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#ifdef BSP_USING_UART3
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UART3_CONFIG,
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#endif
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};
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static struct msp432_uart uart_obj[sizeof(uart_config) / sizeof(uart_config[0])] = {0};
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static rt_err_t msp432_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
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{
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struct msp432_uart *uart;
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RT_ASSERT(serial != RT_NULL);
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RT_ASSERT(cfg != RT_NULL);
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uart = rt_container_of(serial, struct msp432_uart, serial);
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UARTConfigSetExpClk(uart->config->uartbase, SystemCoreClock, uart->config->baudrate,
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uart->config->mode);
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UARTIntEnable(uart->config->uartbase, UART_INT_RX);
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UARTEnable(uart->config->uartbase);
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UARTFIFODisable(uart->config->uartbase);
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IntEnable(uart->uartintbase);
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return RT_EOK;
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}
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static rt_err_t msp432_control(struct rt_serial_device *serial, int cmd, void *arg)
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{
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struct msp432_uart *uart;
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RT_ASSERT(serial != RT_NULL);
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uart = rt_container_of(serial, struct msp432_uart, serial);
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switch (cmd)
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{
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/* disable interrupt */
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case RT_DEVICE_CTRL_CLR_INT:
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/* disable rx irq */
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IntDisable(uart->uartintbase);
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UARTIntDisable(uart->config->uartbase, UART_INT_RX);
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break;
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/* enable interrupt */
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case RT_DEVICE_CTRL_SET_INT:
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/* enable rx irq */
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IntEnable(uart->uartintbase);
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UARTIntEnable(uart->config->uartbase, UART_INT_RX);
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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 msp432_putc(struct rt_serial_device *serial, char c)
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{
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struct msp432_uart *uart;
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RT_ASSERT(serial != RT_NULL);
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uart = rt_container_of(serial, struct msp432_uart, serial);
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UARTCharPut(uart->config->uartbase, c);
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return 1;
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}
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static int msp432_getc(struct rt_serial_device *serial)
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{
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int ch;
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struct msp432_uart *uart;
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RT_ASSERT(serial != RT_NULL);
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uart = rt_container_of(serial, struct msp432_uart, serial);
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ch = -1;
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ch = UARTCharGetNonBlocking(uart->config->uartbase);
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return ch;
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}
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static rt_ssize_t msp432_dma_transmit(struct rt_serial_device *serial, rt_uint8_t *buf, rt_size_t size, int direction)
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{
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/* this is an interface for uart dma, reserved for uptate. */
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return 0;
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}
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static const struct rt_uart_ops msp432_uart_ops =
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{
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.configure = msp432_configure,
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.control = msp432_control,
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.putc = msp432_putc,
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.getc = msp432_getc,
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.dma_transmit = msp432_dma_transmit
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};
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/**
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* Uart common interrupt process. This need add to uart ISR.
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*
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* @param serial serial device
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*/
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static void uart_isr(struct rt_serial_device *serial)
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{
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struct msp432_uart *uart;
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uint32_t ui32Ints;
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RT_ASSERT(serial != RT_NULL);
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uart = rt_container_of(serial, struct msp432_uart, serial);
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ui32Ints = UARTIntStatus(uart->config->uartbase, true);
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UARTIntClear(uart->config->uartbase, ui32Ints);
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/* UART in mode Receiver -------------------------------------------------*/
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if (ui32Ints & (UART_INT_RX | UART_INT_RT))
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{
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rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
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}
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}
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#if defined(BSP_USING_UART0)
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void UART0_IRQHandler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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uart_isr(&(uart_obj[UART0_INDEX].serial));
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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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void UART1_IRQHandler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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uart_isr(&(uart_obj[UART1_INDEX].serial));
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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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void UART2_IRQHandler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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uart_isr(&(uart_obj[UART2_INDEX].serial));
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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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void UART3_IRQHandler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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uart_isr(&(uart_obj[UART3_INDEX].serial));
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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_usart_init(void)
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{
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rt_size_t obj_num = sizeof(uart_obj) / sizeof(struct msp432_uart);
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struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
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rt_err_t result = 0;
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uart_hw_config();
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for (int i = 0; i < obj_num; i++)
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{
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uart_obj[i].config = &uart_config[i];
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uart_obj[i].uartintbase = uart_intbase[i];
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uart_obj[i].serial.ops = &msp432_uart_ops;
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uart_obj[i].serial.config = config;
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/* register UART device */
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result = rt_hw_serial_register(&uart_obj[i].serial, uart_obj[i].config->name,
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RT_DEVICE_FLAG_RDWR
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| RT_DEVICE_FLAG_INT_RX
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| RT_DEVICE_FLAG_INT_TX
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| uart_obj[i].uart_dma_flag
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, NULL);
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RT_ASSERT(result == RT_EOK);
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}
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return result;
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}
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#endif /* RT_USING_SERIAL */
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/************************** end of file ******************/
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