hi guys! i have a discovery stm8s003k board and when i tested a program for cco capability it seems cco will never be stable and program always remain in line : while(CLK_GetFlagStatus(CLK_FLAG_CCORDY) == FALSE); codeand more explain is in detail.

[akhan.1]

i tested it with below code and ieven change prescalers for lower and higher frequency , i also check it with external crystal (and change the code) but it remains in while(CLK_GetFlagStatus(CLK_FLAG_CCORDY) == FALSE);

for ever . when i debug the code and step over in debugger environment after the programm enables CCOEN bit the out put will start and frequency is just true . but both flag

CCORDY and CCOBSY remains set (CCOR=0x69 in debugger) and it always remain in while loop. my code is:

#include "STM8S.h"

#define LED_pin                      GPIO_PIN_0

#define LED_port                     GPIOD

void setup(void);

void clock_setup(void);

void GPIO_setup(void);

void main(void)

{

   setup();

   GPIO_WriteLow(LED_port, LED_pin);

   while(TRUE)

   {

   };

}

void setup(void)

{

clock_setup();

  GPIO_setup();

}

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_HSIDIV8);

  CLK_SYSCLKConfig(CLK_PRESCALER_CPUDIV4);

  CLK_ClockSwitchConfig(CLK_SWITCHMODE_AUTO, CLK_SOURCE_HSI,

  DISABLE, CLK_CURRENTCLOCKSTATE_ENABLE);

  CLK_PeripheralClockConfig(CLK_PERIPHERAL_I2C, DISABLE);

  CLK_PeripheralClockConfig(CLK_PERIPHERAL_SPI, DISABLE);

  CLK_PeripheralClockConfig(CLK_PERIPHERAL_UART1, DISABLE);

  CLK_PeripheralClockConfig(CLK_PERIPHERAL_AWU, DISABLE);

  CLK_PeripheralClockConfig(CLK_PERIPHERAL_ADC, DISABLE);

  CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER1, DISABLE);

  CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER2, DISABLE);

  CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER4, DISABLE);

  CLK_CCOConfig(CLK_OUTPUT_CPU);

  CLK_CCOCmd(ENABLE);

  while(CLK_GetFlagStatus(CLK_FLAG_CCORDY) == FALSE);

}

void GPIO_setup(void)

{                              

  GPIO_DeInit(LED_port);

  GPIO_Init(LED_port, LED_pin, GPIO_MODE_OUT_OD_HIZ_FAST);

}

thanks for reply.