462 lines
12 KiB
C
462 lines
12 KiB
C
/*
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* Copyright (c) 2006-2022, 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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* 2022-02-22 airm2m first version
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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 "drv_usart.h"
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#ifdef RT_USING_SERIAL
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#define LOG_TAG "drv.usart"
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#include <drv_log.h>
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#if !defined(BSP_USING_UART1) && !defined(BSP_USING_UART2) && !defined(BSP_USING_UART3) && \
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!defined(BSP_USING_UART4) && !defined(BSP_USING_UART5) && !defined(BSP_USING_UART6) && \
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!defined(BSP_USING_UART7) && !defined(BSP_USING_UART8)
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#error "Please define at least one BSP_USING_UARTx"
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/* this driver can be disabled at menuconfig -> RT-Thread Components -> Device Drivers */
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#endif
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/* air32 config class */
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struct air32_uart_config
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{
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const char *name;
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USART_TypeDef *Instance;
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IRQn_Type irq_type;
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};
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/* air32 uart dirver class */
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struct air32_uart
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{
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USART_InitTypeDef Init;
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struct air32_uart_config *config;
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struct rt_serial_device serial;
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};
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#if defined(BSP_USING_UART1)
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#ifndef UART1_CONFIG
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#define UART1_CONFIG \
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{ \
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.name = "uart1", \
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.Instance = USART1, \
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.irq_type = USART1_IRQn, \
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}
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#endif /* UART1_CONFIG */
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#endif /* BSP_USING_UART1 */
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#if defined(BSP_USING_UART2)
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#ifndef UART2_CONFIG
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#define UART2_CONFIG \
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{ \
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.name = "uart2", \
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.Instance = USART2, \
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.irq_type = USART2_IRQn, \
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}
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#endif /* UART2_CONFIG */
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#endif /* BSP_USING_UART2 */
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#if defined(BSP_USING_UART3)
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#ifndef UART3_CONFIG
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#define UART3_CONFIG \
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{ \
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.name = "uart3", \
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.Instance = USART3, \
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.irq_type = USART3_IRQn, \
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}
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#endif /* UART3_CONFIG */
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#endif /* BSP_USING_UART3 */
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enum
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{
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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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#ifdef BSP_USING_UART4
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UART4_INDEX,
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#endif
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#ifdef BSP_USING_UART5
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UART5_INDEX,
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#endif
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#ifdef BSP_USING_UART6
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UART6_INDEX,
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#endif
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#ifdef BSP_USING_UART7
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UART7_INDEX,
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#endif
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#ifdef BSP_USING_UART8
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UART8_INDEX,
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#endif
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};
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static struct air32_uart_config uart_config[] =
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{
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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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#ifdef BSP_USING_UART4
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UART4_CONFIG,
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#endif
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#ifdef BSP_USING_UART5
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UART5_CONFIG,
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#endif
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#ifdef BSP_USING_UART6
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UART6_CONFIG,
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#endif
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#ifdef BSP_USING_UART7
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UART7_CONFIG,
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#endif
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#ifdef BSP_USING_UART8
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UART8_CONFIG,
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#endif
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};
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static struct air32_uart uart_obj[sizeof(uart_config) / sizeof(uart_config[0])] = {0};
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static rt_err_t air32_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
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{
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struct air32_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 air32_uart, serial);
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air32_usart_clock_and_io_init(uart->config->Instance);
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USART_StructInit(&uart->Init);
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uart->Init.USART_BaudRate = cfg->baud_rate;
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uart->Init.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
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uart->Init.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
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switch (cfg->flowcontrol)
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{
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case RT_SERIAL_FLOWCONTROL_NONE:
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uart->Init.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
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break;
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case RT_SERIAL_FLOWCONTROL_CTSRTS:
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uart->Init.USART_HardwareFlowControl = USART_HardwareFlowControl_RTS_CTS;
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break;
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default:
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uart->Init.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
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break;
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}
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switch (cfg->data_bits)
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{
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case DATA_BITS_8:
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if (cfg->parity == PARITY_ODD || cfg->parity == PARITY_EVEN)
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uart->Init.USART_WordLength = USART_WordLength_9b;
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else
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uart->Init.USART_WordLength = USART_WordLength_8b;
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break;
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case DATA_BITS_9:
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uart->Init.USART_WordLength = USART_WordLength_9b;
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break;
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default:
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uart->Init.USART_WordLength = USART_WordLength_8b;
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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_1:
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uart->Init.USART_StopBits = USART_StopBits_1;
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break;
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case STOP_BITS_2:
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uart->Init.USART_StopBits = USART_StopBits_2;
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break;
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default:
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uart->Init.USART_StopBits = USART_StopBits_1;
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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_NONE:
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uart->Init.USART_Parity = USART_Parity_No;
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break;
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case PARITY_ODD:
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uart->Init.USART_Parity = USART_Parity_Odd;
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break;
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case PARITY_EVEN:
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uart->Init.USART_Parity = USART_Parity_Even;
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break;
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default:
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uart->Init.USART_Parity = USART_Parity_No;
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break;
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}
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USART_Init(uart->config->Instance, &uart->Init);
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USART_Cmd(uart->config->Instance, ENABLE);
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return RT_EOK;
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}
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static rt_err_t air32_control(struct rt_serial_device *serial, int cmd, void *arg)
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{
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struct air32_uart *uart;
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NVIC_InitTypeDef NVIC_InitStruct;
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RT_ASSERT(serial != RT_NULL);
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uart = rt_container_of(serial, struct air32_uart, serial);
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NVIC_InitStruct.NVIC_IRQChannel = uart->config->irq_type;
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NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 2;
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NVIC_InitStruct.NVIC_IRQChannelSubPriority = 1;
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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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// NVIC_DisableIRQ(uart->config->irq_type);
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NVIC_InitStruct.NVIC_IRQChannelCmd = DISABLE;
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NVIC_Init(&NVIC_InitStruct);
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/* disable interrupt */
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USART_ITConfig(uart->config->Instance,USART_IT_RXNE,DISABLE);
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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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// NVIC_EnableIRQ(uart->config->irq_type);
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NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStruct);
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/* enable interrupt */
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USART_ITConfig(uart->config->Instance, USART_IT_RXNE,ENABLE);
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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 air32_putc(struct rt_serial_device *serial, char c)
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{
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struct air32_uart *uart;
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RT_ASSERT(serial != RT_NULL);
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uart = rt_container_of(serial, struct air32_uart, serial);
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while (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_TXE) == RESET);
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USART_SendData(uart->config->Instance, (uint8_t)c);
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return 1;
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}
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static int air32_getc(struct rt_serial_device *serial)
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{
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int ch;
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struct air32_uart *uart;
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RT_ASSERT(serial != RT_NULL);
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uart = rt_container_of(serial, struct air32_uart, serial);
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ch = -1;
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if (RESET != USART_GetFlagStatus(uart->config->Instance, USART_FLAG_RXNE))
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{
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ch = USART_ReceiveData(uart->config->Instance) & 0xff;
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}
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return ch;
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}
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static rt_size_t air32_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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return 0;
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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 air32_uart *uart;
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RT_ASSERT(serial != RT_NULL);
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uart = rt_container_of(serial, struct air32_uart, serial);
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/* UART in mode Receiver -------------------------------------------------*/
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if ((USART_GetITStatus(uart->config->Instance, USART_IT_RXNE) != RESET) && (RESET != USART_GetFlagStatus(uart->config->Instance, USART_FLAG_RXNE)))
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{
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rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
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USART_ClearITPendingBit(uart->config->Instance, USART_IT_RXNE);
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USART_ClearFlag(uart->config->Instance, USART_FLAG_RXNE);
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}
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else
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{
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if (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_CTS) != RESET)
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{
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USART_ClearFlag(uart->config->Instance, USART_FLAG_CTS);
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}
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if (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_LBD) != RESET)
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{
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USART_ClearFlag(uart->config->Instance, USART_FLAG_LBD);
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}
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if (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_TC) != RESET)
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{
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USART_ClearFlag(uart->config->Instance, USART_FLAG_TC);
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}
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}
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}
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#if defined(BSP_USING_UART1)
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void USART1_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 USART2_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 USART3_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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#if defined(BSP_USING_UART4)
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void UART4_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[UART4_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_UART4*/
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#if defined(BSP_USING_UART5)
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void UART5_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[UART5_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_UART5*/
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#if defined(BSP_USING_UART6)
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void USART6_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[UART6_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_UART6*/
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#if defined(BSP_USING_UART7)
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void UART7_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[UART7_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_UART7*/
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#if defined(BSP_USING_UART8)
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void UART8_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[UART8_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_UART8*/
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static const struct rt_uart_ops air32_uart_ops =
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{
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.configure = air32_configure,
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.control = air32_control,
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.putc = air32_putc,
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.getc = air32_getc,
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.dma_transmit = air32_dma_transmit
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};
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int rt_hw_usart_init(void)
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{
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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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for (rt_size_t i = 0; i < sizeof(uart_obj) / sizeof(struct air32_uart); i++)
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{
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/* init UART object */
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uart_obj[i].config = &uart_config[i];
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uart_obj[i].serial.ops = &air32_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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, RT_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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