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@@ -39,7 +39,7 @@ extern UART_HandleTypeDef huart1;
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extern UART_HandleTypeDef huart3;
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extern UART_HandleTypeDef huart3;
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/* USER CODE BEGIN Private defines */
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/* USER CODE BEGIN Private defines */
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-#define USART4_REC_LEN (300) /* 定义最大接收字节数 200 */
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+#define USART4_REC_LEN (1000) /* 定义最大接收字节数 200 */
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#define USART3_REC_LEN (300) /* 定义最大接收字节数 200 */
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#define USART3_REC_LEN (300) /* 定义最大接收字节数 200 */
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/* USER CODE END Private defines */
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/* USER CODE END Private defines */
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hx