wangfq
ee3ade6f00
现场: LUP 帧后乱码+复位。JSON: sensor 打印被二进制污染、 LUP Rx hex 残留重复 → printf 交叉输出的典型症状。 根因: BLE 协议栈回调(peripheral.c, BB 中断上下文)与主循环 都有 PRINT, 交叉调用 printf → 输出乱码 + newlib 堆/状态破坏 → HardFault (RST=0x10000000 为 HardFault_Handler 内 NVIC_SystemReset)。 修复: - debug.h PRINT 宏: 保存/恢复 MSTATUS 临界区 (__get_MSTATUS/ __disable_irq/printf/__set_MSTATUS), 中断里调用也能正确恢复, 不会嵌套误开中断 - loop_uart_proto: LUP Rx 逐字节打印改缓冲一次性输出 — 逐字节 PRINT 关中断 ~350us/字节屏蔽 UART2 ISR 丢帧
68 lines
2.0 KiB
C
68 lines
2.0 KiB
C
/********************************** (C) COPYRIGHT *******************************
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* File Name : debug.h
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* Author : WCH
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* Version : V1.0.0
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* Date : 2023/10/24
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* Description : This file contains all the functions prototypes for UART
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* Printf , Delay functions.
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*********************************************************************************
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* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
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* Attention: This software (modified or not) and binary are used for
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* microcontroller manufactured by Nanjing Qinheng Microelectronics.
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*******************************************************************************/
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#ifndef __DEBUG_H
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#define __DEBUG_H
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#include "stdio.h"
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#include "ch32v20x.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* UART Printf Definition */
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#define DEBUG_UART1 1
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#define DEBUG_UART2 2
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#define DEBUG_UART3 3
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/* DEBUG UATR Definition */
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#ifndef DEBUG
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#define DEBUG DEBUG_UART1
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#endif
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/* SDI Printf Definition */
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#define SDI_PR_CLOSE 0
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#define SDI_PR_OPEN 1
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#ifndef SDI_PRINT
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#define SDI_PRINT SDI_PR_CLOSE
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#endif
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void Delay_Init(void);
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void Delay_Us(uint32_t n);
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void Delay_Ms(uint32_t n);
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void USART_Printf_Init(uint32_t baudrate);
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void SDI_Printf_Enable(void);
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#if(DEBUG)
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/* 2026-08-13 printf 重入修复: BLE 协议栈回调(peripheral.c, BB 中断上下文)
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与主循环都有 PRINT, 交叉调用 printf → 输出乱码 + 堆/状态破坏 → HardFault。
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临界区用保存/恢复 MSTATUS: 中断里调用也能正确恢复, 不会嵌套误开中断。
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注意: 高频逐字节 PRINT (如 LUP Rx hex) 会长时间关中断, 应改缓冲一次性输出 */
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#define PRINT(format, ...) do { \
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uint32_t _print_ms = __get_MSTATUS(); \
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__disable_irq(); \
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printf(format, ##__VA_ARGS__); \
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__set_MSTATUS(_print_ms); \
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} while(0)
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#else
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#define PRINT(X...)
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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