448 lines
10 KiB
C
448 lines
10 KiB
C
/*
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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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* 2023-02-23 Jonas first version
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*/
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#include "drv_usart_v2.h"
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#ifdef RT_USING_SERIAL_V2
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#if !defined(BSP_USING_UART1) && !defined(BSP_USING_UART2) && \
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!defined(BSP_USING_UART3) && !defined(BSP_USING_UART4) && \
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!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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#endif
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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 at32_usart usart_config[] =
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{
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#ifdef BSP_USING_UART1
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{
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"uart1",
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USART1,
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USART1_IRQn,
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},
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#endif
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#ifdef BSP_USING_UART2
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{
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"uart2",
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USART2,
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USART2_IRQn,
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},
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#endif
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#ifdef BSP_USING_UART3
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{
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"uart3",
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USART3,
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USART3_IRQn,
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},
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#endif
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#ifdef BSP_USING_UART4
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{
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"uart4",
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UART4,
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UART4_IRQn,
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},
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#endif
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#ifdef BSP_USING_UART5
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{
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"uart5",
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UART5,
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UART5_IRQn,
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},
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#endif
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#ifdef BSP_USING_UART6
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{
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"uart6",
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USART6,
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USART6_IRQn,
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},
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#endif
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#ifdef BSP_USING_UART7
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{
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"uart7",
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UART7,
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UART7_IRQn,
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},
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#endif
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#ifdef BSP_USING_UART8
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{
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"uart8",
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UART8,
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UART8_IRQn,
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},
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#endif
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};
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static rt_err_t at32_configure(struct rt_serial_device *serial,
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struct serial_configure *cfg)
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{
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struct at32_usart *usart_instance = (struct at32_usart *) serial->parent.user_data;
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usart_data_bit_num_type data_bit;
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usart_stop_bit_num_type stop_bit;
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usart_parity_selection_type parity_mode;
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RT_ASSERT(serial != RT_NULL);
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RT_ASSERT(cfg != RT_NULL);
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RT_ASSERT(usart_instance != RT_NULL);
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at32_msp_usart_init((void *)usart_instance->usart_x);
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usart_receiver_enable(usart_instance->usart_x, TRUE);
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usart_transmitter_enable(usart_instance->usart_x, TRUE);
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usart_hardware_flow_control_set(usart_instance->usart_x, USART_HARDWARE_FLOW_NONE);
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switch (cfg->data_bits)
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{
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case DATA_BITS_8:
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data_bit = USART_DATA_8BITS;
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break;
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case DATA_BITS_9:
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data_bit = USART_DATA_9BITS;
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break;
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default:
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data_bit = USART_DATA_8BITS;
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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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stop_bit = USART_STOP_1_BIT;
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break;
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case STOP_BITS_2:
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stop_bit = USART_STOP_2_BIT;
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break;
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default:
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stop_bit = USART_STOP_1_BIT;
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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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parity_mode = USART_PARITY_NONE;
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break;
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case PARITY_ODD:
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parity_mode = USART_PARITY_ODD;
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break;
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case PARITY_EVEN:
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parity_mode = USART_PARITY_EVEN;
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break;
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default:
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parity_mode = USART_PARITY_NONE;
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break;
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}
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usart_parity_selection_config(usart_instance->usart_x, parity_mode);
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usart_init(usart_instance->usart_x, cfg->baud_rate, data_bit, stop_bit);
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usart_enable(usart_instance->usart_x, TRUE);
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return RT_EOK;
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}
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static rt_err_t at32_control(struct rt_serial_device *serial, int cmd, void *arg)
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{
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struct at32_usart *usart;
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rt_ubase_t ctrl_arg = (rt_ubase_t)arg;
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RT_ASSERT(serial != RT_NULL);
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usart = (struct at32_usart *) serial->parent.user_data;
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RT_ASSERT(usart != RT_NULL);
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if (ctrl_arg & (RT_DEVICE_FLAG_RX_BLOCKING | RT_DEVICE_FLAG_RX_NON_BLOCKING))
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{
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ctrl_arg = RT_DEVICE_FLAG_INT_RX;
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}
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else if (ctrl_arg & (RT_DEVICE_FLAG_TX_BLOCKING | RT_DEVICE_FLAG_TX_NON_BLOCKING))
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{
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ctrl_arg = RT_DEVICE_FLAG_INT_TX;
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}
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switch (cmd)
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{
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case RT_DEVICE_CTRL_CLR_INT:
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nvic_irq_disable(usart->irqn);
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if (ctrl_arg == RT_DEVICE_FLAG_INT_RX)
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usart_interrupt_enable(usart->usart_x, USART_RDBF_INT, FALSE);
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else if (ctrl_arg == RT_DEVICE_FLAG_INT_TX)
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usart_interrupt_enable(usart->usart_x, USART_TDBE_INT, FALSE);
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break;
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case RT_DEVICE_CTRL_SET_INT:
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nvic_irq_enable(usart->irqn, 4, 1);
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if (ctrl_arg == RT_DEVICE_FLAG_INT_RX)
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usart_interrupt_enable(usart->usart_x, USART_RDBF_INT, TRUE);
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else if (ctrl_arg == RT_DEVICE_FLAG_INT_TX)
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usart_interrupt_enable(usart->usart_x, USART_TDBE_INT, TRUE);
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break;
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case RT_DEVICE_CTRL_CONFIG:
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at32_control(serial, RT_DEVICE_CTRL_SET_INT, (void *)ctrl_arg);
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break;
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case RT_DEVICE_CHECK_OPTMODE:
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{
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return RT_SERIAL_TX_BLOCKING_BUFFER;
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}
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case RT_DEVICE_CTRL_CLOSE:
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usart_reset(usart->usart_x);
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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 at32_putc(struct rt_serial_device *serial, char ch)
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{
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struct at32_usart *usart;
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RT_ASSERT(serial != RT_NULL);
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usart = (struct at32_usart *) serial->parent.user_data;
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RT_ASSERT(usart != RT_NULL);
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usart_data_transmit(usart->usart_x, (uint8_t)ch);
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while (usart_flag_get(usart->usart_x, USART_TDC_FLAG) == RESET);
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return 1;
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}
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static int at32_getc(struct rt_serial_device *serial)
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{
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int ch;
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struct at32_usart *usart;
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RT_ASSERT(serial != RT_NULL);
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usart = (struct at32_usart *) serial->parent.user_data;
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RT_ASSERT(usart != RT_NULL);
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ch = -1;
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if (usart_flag_get(usart->usart_x, USART_RDBF_FLAG) != RESET)
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{
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ch = usart_data_receive(usart->usart_x) & 0xff;
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}
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return ch;
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}
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static rt_size_t at32_transmit(struct rt_serial_device *serial, rt_uint8_t *buf, rt_size_t size, rt_uint32_t tx_flag)
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{
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RT_ASSERT(serial != RT_NULL);
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RT_ASSERT(buf != RT_NULL);
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at32_control(serial, RT_DEVICE_CTRL_SET_INT, (void *)tx_flag);
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return size;
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}
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static const struct rt_uart_ops at32_usart_ops =
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{
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at32_configure,
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at32_control,
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at32_putc,
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at32_getc,
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at32_transmit
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};
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static void usart_isr(struct rt_serial_device *serial)
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{
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struct at32_usart *usart_instance;
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RT_ASSERT(serial != RT_NULL);
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usart_instance = (struct at32_usart *) serial->parent.user_data;
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RT_ASSERT(usart_instance != RT_NULL);
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if (usart_flag_get(usart_instance->usart_x, USART_RDBF_FLAG) != RESET)
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{
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struct rt_serial_rx_fifo *rx_fifo;
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rx_fifo = (struct rt_serial_rx_fifo *) serial->serial_rx;
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RT_ASSERT(rx_fifo != RT_NULL);
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rt_ringbuffer_putchar(&(rx_fifo->rb), usart_data_receive(usart_instance->usart_x));
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rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
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}
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else
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{
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if ((usart_flag_get(usart_instance->usart_x, USART_TDBE_FLAG) != RESET) && usart_instance->usart_x->ctrl1_bit.tdbeien)
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{
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struct rt_serial_tx_fifo *tx_fifo;
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tx_fifo = (struct rt_serial_tx_fifo *) serial->serial_tx;
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RT_ASSERT(tx_fifo != RT_NULL);
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rt_uint8_t put_char = 0;
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if (rt_ringbuffer_getchar(&(tx_fifo->rb), &put_char))
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{
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usart_data_transmit(usart_instance->usart_x, put_char);
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}
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else
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{
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usart_interrupt_enable(usart_instance->usart_x, USART_TDBE_INT, FALSE);
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usart_interrupt_enable(usart_instance->usart_x, USART_TDC_INT, TRUE);
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}
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usart_flag_clear(usart_instance->usart_x, USART_TDBE_FLAG);
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}
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else if (usart_flag_get(usart_instance->usart_x, USART_TDC_FLAG) != RESET)
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{
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usart_interrupt_enable(usart_instance->usart_x, USART_TDC_INT, FALSE);
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rt_hw_serial_isr(serial, RT_SERIAL_EVENT_TX_DONE);
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usart_flag_clear(usart_instance->usart_x, USART_TDC_FLAG);
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}
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if (usart_flag_get(usart_instance->usart_x, USART_CTSCF_FLAG) != RESET)
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{
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usart_flag_clear(usart_instance->usart_x, USART_CTSCF_FLAG);
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}
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if (usart_flag_get(usart_instance->usart_x, USART_BFF_FLAG) != RESET)
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{
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usart_flag_clear(usart_instance->usart_x, USART_BFF_FLAG);
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}
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}
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}
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#ifdef BSP_USING_UART1
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void USART1_IRQHandler(void)
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{
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rt_interrupt_enter();
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usart_isr(&usart_config[UART1_INDEX].serial);
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rt_interrupt_leave();
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}
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#endif
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#ifdef BSP_USING_UART2
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void USART2_IRQHandler(void)
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{
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rt_interrupt_enter();
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usart_isr(&usart_config[UART2_INDEX].serial);
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rt_interrupt_leave();
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}
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#endif
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#ifdef BSP_USING_UART3
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void USART3_IRQHandler(void)
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{
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rt_interrupt_enter();
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usart_isr(&usart_config[UART3_INDEX].serial);
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rt_interrupt_leave();
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}
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#endif
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#ifdef BSP_USING_UART4
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void UART4_IRQHandler(void)
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{
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rt_interrupt_enter();
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usart_isr(&usart_config[UART4_INDEX].serial);
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rt_interrupt_leave();
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}
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#endif
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#ifdef BSP_USING_UART5
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void UART5_IRQHandler(void)
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{
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rt_interrupt_enter();
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usart_isr(&usart_config[UART5_INDEX].serial);
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rt_interrupt_leave();
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}
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#endif
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#ifdef BSP_USING_UART6
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void USART6_IRQHandler(void)
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{
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rt_interrupt_enter();
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usart_isr(&usart_config[UART6_INDEX].serial);
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rt_interrupt_leave();
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}
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#endif
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#ifdef BSP_USING_UART7
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void UART7_IRQHandler(void)
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{
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rt_interrupt_enter();
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usart_isr(&usart_config[UART7_INDEX].serial);
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rt_interrupt_leave();
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}
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#endif
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#ifdef BSP_USING_UART8
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void UART8_IRQHandler(void)
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{
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rt_interrupt_enter();
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usart_isr(&usart_config[UART8_INDEX].serial);
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rt_interrupt_leave();
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}
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#endif
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int rt_hw_usart_init(void)
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{
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rt_size_t obj_num;
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int index;
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obj_num = sizeof(usart_config) / sizeof(struct at32_usart);
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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 (index = 0; index < obj_num; index++)
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{
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usart_config[index].serial.config = config;
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usart_config[index].serial.ops = &at32_usart_ops;
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/* register uart device */
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result = rt_hw_serial_register(&usart_config[index].serial,
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usart_config[index].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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&usart_config[index]);
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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_V2 */
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