Sir, I am using 3 ADC channels in STM8S003F3 for purpose of AC voltage measurement and while AC Power down on any channel , board going to reset , please suggest me the perfect solution .

[RSing.11]

in my testing while I am down the power or power on of a any channel MCU is going to reset .

I have attached a schematic of my board.

If is there may issue of softwere code please suggest me

the clock setup is

void clock_setup(void)

{

CLK_DeInit();

CLK_HSECmd(DISABLE);

CLK_LSICmd(DISABLE);

CLK_HSICmd(ENABLE);

while(CLK_GetFlagStatus(CLK_FLAG_HSIRDY) == FALSE);

CLK_ClockSwitchCmd(ENABLE);

CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV2);

CLK_SYSCLKConfig(CLK_PRESCALER_CPUDIV4);

CLK_ClockSwitchConfig(CLK_SWITCHMODE_AUTO, CLK_SOURCE_HSI, 

DISABLE, CLK_CURRENTCLOCKSTATE_ENABLE);

//CLK_PeripheralClockConfig(CLK_PERIPHERAL_SPI, DISABLE);

//CLK_PeripheralClockConfig(CLK_PERIPHERAL_I2C, DISABLE);

CLK_PeripheralClockConfig(CLK_PERIPHERAL_ADC, ENABLE);

//CLK_PeripheralClockConfig(CLK_PERIPHERAL_AWU, DISABLE);

//CLK_PeripheralClockConfig(CLK_PERIPHERAL_UART1, DISABLE);

//CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER1, DISABLE);

//CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER2, DISABLE);

//CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER4, DISABLE);

}

void GPIO_setup(void)

{

GPIO_DeInit(GPIOB);

GPIO_DeInit(GPIOC);

//GPIO_DeInit(GPIOA);

GPIO_Init(GPIOB, GPIO_PIN_4, GPIO_MODE_OUT_PP_LOW_FAST);

GPIO_Init(GPIOB, GPIO_PIN_5, GPIO_MODE_OUT_PP_LOW_FAST);

GPIO_Init(GPIOC, GPIO_PIN_3, GPIO_MODE_OUT_PP_LOW_FAST);

GPIO_Init(GPIOC, GPIO_PIN_5, GPIO_MODE_OUT_PP_LOW_FAST);

GPIO_Init(GPIOC, GPIO_PIN_6, GPIO_MODE_OUT_PP_LOW_FAST);

GPIO_Init(GPIOC, GPIO_PIN_7, GPIO_MODE_OUT_PP_LOW_FAST);

//GPIO_Init(GPIOA, GPIO_PIN_3, GPIO_MODE_OUT_PP_LOW_FAST);

}

and ADC setup

void ADC1_setup(ADC1_Channel_TypeDef channel)

{

ADC1_DeInit();

ADC1_Init(ADC1_CONVERSIONMODE_CONTINUOUS, 

 channel,

 ADC1_PRESSEL_FCPU_D18, 

 ADC1_EXTTRIG_GPIO, 

 DISABLE, 

 ADC1_ALIGN_RIGHT, 

 ADC1_SCHMITTTRIG_CHANNEL0, 

 DISABLE);

ADC1_Cmd(ENABLE);

}

thanks

Rajat