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我在用FM33LE026这款芯片 配置UART4的时候配置和UART2一样的 但是UART4无法收发数据 不能触发接收中断是什么情况 有类似的问题么
配置如下:
FL_GPIO_InitTypeDef GPIO_InitStruct;
FL_UART_InitTypeDef defaultInitStruct;
GPIO_InitStruct.pin = FL_GPIO_PIN_0;
GPIO_InitStruct.mode = FL_GPIO_MODE_DIGITAL;
GPIO_InitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL;
GPIO_InitStruct.pull = FL_ENABLE;
GPIO_InitStruct.remapPin = FL_ENABLE;
FL_GPIO_Init( GPIOB, &GPIO_InitStruct );
GPIO_InitStruct.pin = FL_GPIO_PIN_1;
GPIO_InitStruct.mode = FL_GPIO_MODE_DIGITAL;
GPIO_InitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL;
GPIO_InitStruct.pull = FL_DISABLE;
GPIO_InitStruct.remapPin = FL_ENABLE;
FL_GPIO_Init( GPIOB, &GPIO_InitStruct );
defaultInitStruct.clockSrc = FL_RCC_UART2_CLK_SOURCE_APB1CLK;
defaultInitStruct.baudRate = 19200;
defaultInitStruct.dataWidth = FL_LPUART_DATA_WIDTH_8B;
defaultInitStruct.stopBits = FL_LPUART_STOP_BIT_WIDTH_1B;
defaultInitStruct.parity = FL_LPUART_PARITY_NONE;
defaultInitStruct.transferDirection = FL_LPUART_DIRECTION_TX_RX;
FL_UART_Init(UART2,&defaultInitStruct );
FL_UART_DisableIT_TXShiftBuffEmpty(UART2); //关闭发送中断
FL_UART_EnableIT_RXBuffFull(UART2); //打开接收中断
FL_UART_EnableTX(UART2); //打开发送使能
FL_UART_EnableRX(UART2); //打开接收使能
GPIO_InitStruct.pin = FL_GPIO_PIN_2;
GPIO_InitStruct.mode = FL_GPIO_MODE_DIGITAL;
GPIO_InitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL;
GPIO_InitStruct.pull = FL_ENABLE;
GPIO_InitStruct.remapPin = FL_ENABLE;
FL_GPIO_Init( GPIOB, &GPIO_InitStruct );
GPIO_InitStruct.pin = FL_GPIO_PIN_3;
GPIO_InitStruct.mode = FL_GPIO_MODE_DIGITAL;
GPIO_InitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL;
GPIO_InitStruct.pull = FL_DISABLE;
GPIO_InitStruct.remapPin = FL_ENABLE;
FL_GPIO_Init( GPIOB, &GPIO_InitStruct );
defaultInitStruct.baudRate = 19200;
defaultInitStruct.dataWidth = FL_LPUART_DATA_WIDTH_8B;
defaultInitStruct.stopBits = FL_LPUART_STOP_BIT_WIDTH_1B;
defaultInitStruct.parity = FL_LPUART_PARITY_NONE;
defaultInitStruct.transferDirection = FL_LPUART_DIRECTION_TX_RX;
FL_UART_Init(UART4,&defaultInitStruct);
FL_UART_ClearFlag_TXShiftBuffEmpty(UART4);
FL_UART_DisableIT_TXShiftBuffEmpty(UART4); //关闭发送中断
FL_UART_EnableIT_RXBuffFull(UART4); //打开接收中断
FL_UART_EnableTX(UART4); //打开发送使能
FL_UART_EnableRX(UART4); //打开接收使能
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