STM8AF6226 Pin/RST持续输出7Khz方波，程序不受控

1万 · 2021-5-9 22:16

1.STM8AF6226用STVP擦空后RST Pin一直未高电平；
2.但是用IAR编译以下程序后，程序一直没有运行，最简单的程序，连配置个GPIO反转都无法实现

1万 · 2021-5-9 22:18

用STVP下载

1万 · 2021-5-9 22:20

下载过，现象一样！

1万 · 2021-5-9 22:22

程序没有配置对

2万 · 2021-5-9 22:25

芯片没有复位

1万 · 2021-5-9 22:26

嗯，压根就没有进入到Main函数

1万 · 2021-5-9 22:28

但是通过通断VCC电源的办法，用示波器探头钩住RST Pin测量，大部分时间是RST Pin一直输出一个7Khz左右的方波信号，也会出现几次高电平的情况。

1万 · 2021-5-9 22:34

但是当出现高电平的时候，去测量已经配置的PB0,PB1 电平，依然是长期为低电平

1万 · 2021-5-9 22:36

没有按程序跑动

1万 · 2021-5-9 22:39

最小系统，把板子上面的其他电路都拿掉了，直接3.3V供电，VCAP有放电容，复位是0.1uF，10K电阻。

/**
  ******************************************************************************
  * @file Project/main.c
  * @author  MCD Application Team
  * @version V2.2.0
  * @date 30-September-2014
  * @brief Main program body
******************************************************************************
  * @attention
  *
  * <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2>
  *
  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  * You may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
  *
  *       http://www.st.com/software_license_agreement_liberty_v2
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "stm8s.h"

/* Private defines -----------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
#define LED_GPIO_PORT  (GPIOB)
#define LED_GPIO_PINS  (GPIO_PIN_0 | GPIO_PIN_1 )

void Delay(uint16_t nCount)
{
  /* Decrement nCount value */
  while (nCount != 0)
  {
nCount--;
  }


}

void main(void)
{

  /* Initialize I/Os in Output Mode */
  GPIO_Init(LED_GPIO_PORT, (GPIO_Pin_TypeDef)LED_GPIO_PINS, GPIO_MODE_OUT_PP_LOW_FAST);

  while (1)
  {
/* Toggles LEDs */
GPIO_WriteReverse(LED_GPIO_PORT, (GPIO_Pin_TypeDef)LED_GPIO_PINS);
Delay(0xFFFF);
  }

}

#ifdef USE_FULL_ASSERT

/**
  * @brief  Reports the name of the source file and the source line number
  * where the assert_param error has occurred.
  * @param file: pointer to the source file name
  * @param line: assert_param error line source number
  * @retval : None
  */
void assert_failed(u8* file, u32 line)
{
  /* User can add his own implementation to report the file name and line number,
   ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

  /* Infinite loop */
  while (1)
  {
  }
}
#endif

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/