Hi All, I am new to STM8L controller, Could you help me out with the clock configuration part? I am using STM8L152R8T6 controller Eval Kit along with Cosmic Compiler. Trying to do simple LED toggling on this board but unable to perform it.

[vshah]

void main()
{
	uint32_t clockFrequency = 0x0000;
	
	//clock enable for MCU
	/* Select HSE as system clock source */
  CLK_HSICmd(ENABLE);
  CLK_SYSCLKSourceConfig(CLK_SYSCLKSource_HSI);
  /* system clock prescaler: 1*/
  CLK_SYSCLKDivConfig(CLK_SYSCLKDiv_1);
  while (CLK_GetSYSCLKSource() != CLK_SYSCLKSource_HSI);
	
	clockFrequency = CLK_GetClockFreq();
 
	GPIO_Init(GPIOA, GPIO_Pin_All, GPIO_Mode_Out_OD_Low_Fast);
	GPIO_Init(GPIOB, GPIO_Pin_All, GPIO_Mode_Out_OD_Low_Fast);
	GPIO_Init(GPIOC, GPIO_Pin_All, GPIO_Mode_Out_OD_Low_Fast);
	GPIO_Init(GPIOD, GPIO_Pin_All, GPIO_Mode_Out_OD_Low_Fast);
	GPIO_Init(GPIOE, GPIO_Pin_All, GPIO_Mode_Out_OD_Low_Fast);
	GPIO_Init(GPIOF, GPIO_Pin_All, GPIO_Mode_Out_OD_Low_Fast);
	GPIO_Init(GPIOG, GPIO_Pin_All, GPIO_Mode_Out_OD_Low_Fast);
	GPIO_Init(GPIOH, GPIO_Pin_All, GPIO_Mode_Out_OD_Low_Fast);
	GPIO_Init(GPIOI, GPIO_Pin_All, GPIO_Mode_Out_OD_Low_Fast);
	
	while (1)
	{
		GPIO_Write(GPIOA, 0xff);
		GPIO_Write(GPIOB, 0xff);
		GPIO_Write(GPIOC, 0xff);
		GPIO_Write(GPIOD, 0xff);
		GPIO_Write(GPIOE, 0xff);
		GPIO_Write(GPIOF, 0xff);
		GPIO_Write(GPIOG, 0xff);
		GPIO_Write(GPIOH, 0xff);
		GPIO_Write(GPIOI, 0xff);
		
		Delay(1000);Delay(1000);
		
		GPIO_Write(GPIOA, 0x00);
		GPIO_Write(GPIOB, 0x00);
		GPIO_Write(GPIOC, 0x00);
		GPIO_Write(GPIOD, 0x00);
		GPIO_Write(GPIOE, 0x00);
		GPIO_Write(GPIOF, 0x00);
		GPIO_Write(GPIOG, 0x00);
		GPIO_Write(GPIOH, 0x00);
		GPIO_Write(GPIOI, 0x00);
		
		Delay(1000);Delay(1000);
	}
}

Above is the code I am working on. One more interesting point, even clockFrequency set to zero it is always showing some random value after initialization and after clockFrequency = CLK_GetClockFreq() line.

Could anyone help me out? Where I am doing wrong?

Thanks!!!

[Amira]

Hello @vshah​ 

you can refer to STM8L package available on st.com:

https://my.st.com/content/my_st_com/en/products/embedded-software/mcu-mpu-embedded-software/stm8-embedded-software/stsw-stm8016.html

where you can find examples (GPIO Toggle) on STM8L Eval board.

Hope this would help you!

Regards,

Amira

[vshah]

Hi Amira,

Actually I had already gone through it and it was not working for me. The above code is written with help of "standard peripheral library" package only.

Regards,

Viren