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void init_led(void)
{
		RCC->APB2ENR |= RCC_APB2ENR_IOPCEN;
		GPIOC->CRL &= ~(GPIO_CRL_MODE0_0);
		GPIOC->CRL |= GPIO_CRL_MODE0_1;
		GPIOC->CRL &= ~GPIO_CRL_CNF2;
}
 
void init_pll(void)
{
		RCC_DeInit();
		RCC_HSICmd(ENABLE);
		while(!RCC_GetFlagStatus(RCC_FLAG_HSIRDY));
		RCC_PLLConfig(RCC_PLLSource_HSI_Div2, RCC_PLLMul_6);
		RCC_PLLCmd(ENABLE);
		while(!RCC_GetFlagStatus(RCC_FLAG_PLLRDY));
		FLASH_SetLatency(FLASH_Latency_1);
		FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
		RCC_HCLKConfig(RCC_SYSCLK_Div1);
		RCC_PCLK1Config(RCC_HCLK_Div1);
		RCC_PCLK2Config(RCC_HCLK_Div1);
		RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
		while(RCC_GetSYSCLKSource() != 0x08);
		SystemCoreClockUpdate();
}
 
void init_mcu(void)
{
		init_pll();
		init_led();
}
 
int main(void)
{
		uint32_t i;
 
		init_mcu();
		while(1)
		{
				GPIOC->ODR ^= GPIO_ODR_ODR0;
				for (i = 0; i < 1e5; i++)
						__asm("nop");
		}
}
 

prog.c: In function 'init_led':
prog.c:3:3: error: 'RCC' undeclared (first use in this function)
   RCC->APB2ENR |= RCC_APB2ENR_IOPCEN;
   ^
prog.c:3:3: note: each undeclared identifier is reported only once for each function it appears in
prog.c:3:19: error: 'RCC_APB2ENR_IOPCEN' undeclared (first use in this function)
   RCC->APB2ENR |= RCC_APB2ENR_IOPCEN;
                   ^
prog.c:4:3: error: 'GPIOC' undeclared (first use in this function)
   GPIOC->CRL &= ~(GPIO_CRL_MODE0_0);
   ^
prog.c:4:19: error: 'GPIO_CRL_MODE0_0' undeclared (first use in this function)
   GPIOC->CRL &= ~(GPIO_CRL_MODE0_0);
                   ^
prog.c:5:17: error: 'GPIO_CRL_MODE0_1' undeclared (first use in this function)
   GPIOC->CRL |= GPIO_CRL_MODE0_1;
                 ^
prog.c:6:18: error: 'GPIO_CRL_CNF2' undeclared (first use in this function)
   GPIOC->CRL &= ~GPIO_CRL_CNF2;
                  ^
prog.c: In function 'init_pll':
prog.c:11:3: warning: implicit declaration of function 'RCC_DeInit' [-Wimplicit-function-declaration]
   RCC_DeInit();
   ^
prog.c:12:3: warning: implicit declaration of function 'RCC_HSICmd' [-Wimplicit-function-declaration]
   RCC_HSICmd(ENABLE);
   ^
prog.c:12:14: error: 'ENABLE' undeclared (first use in this function)
   RCC_HSICmd(ENABLE);
              ^
prog.c:13:10: warning: implicit declaration of function 'RCC_GetFlagStatus' [-Wimplicit-function-declaration]
   while(!RCC_GetFlagStatus(RCC_FLAG_HSIRDY));
          ^
prog.c:13:28: error: 'RCC_FLAG_HSIRDY' undeclared (first use in this function)
   while(!RCC_GetFlagStatus(RCC_FLAG_HSIRDY));
                            ^
prog.c:14:3: warning: implicit declaration of function 'RCC_PLLConfig' [-Wimplicit-function-declaration]
   RCC_PLLConfig(RCC_PLLSource_HSI_Div2, RCC_PLLMul_6);
   ^
prog.c:14:17: error: 'RCC_PLLSource_HSI_Div2' undeclared (first use in this function)
   RCC_PLLConfig(RCC_PLLSource_HSI_Div2, RCC_PLLMul_6);
                 ^
prog.c:14:41: error: 'RCC_PLLMul_6' undeclared (first use in this function)
   RCC_PLLConfig(RCC_PLLSource_HSI_Div2, RCC_PLLMul_6);
                                         ^
prog.c:15:3: warning: implicit declaration of function 'RCC_PLLCmd' [-Wimplicit-function-declaration]
   RCC_PLLCmd(ENABLE);
   ^
prog.c:16:28: error: 'RCC_FLAG_PLLRDY' undeclared (first use in this function)
   while(!RCC_GetFlagStatus(RCC_FLAG_PLLRDY));
                            ^
prog.c:17:3: warning: implicit declaration of function 'FLASH_SetLatency' [-Wimplicit-function-declaration]
   FLASH_SetLatency(FLASH_Latency_1);
   ^
prog.c:17:20: error: 'FLASH_Latency_1' undeclared (first use in this function)
   FLASH_SetLatency(FLASH_Latency_1);
                    ^
prog.c:18:3: warning: implicit declaration of function 'FLASH_PrefetchBufferCmd' [-Wimplicit-function-declaration]
   FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
   ^
prog.c:18:27: error: 'FLASH_PrefetchBuffer_Enable' undeclared (first use in this function)
   FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
                           ^
prog.c:19:3: warning: implicit declaration of function 'RCC_HCLKConfig' [-Wimplicit-function-declaration]
   RCC_HCLKConfig(RCC_SYSCLK_Div1);
   ^
prog.c:19:18: error: 'RCC_SYSCLK_Div1' undeclared (first use in this function)
   RCC_HCLKConfig(RCC_SYSCLK_Div1);
                  ^
prog.c:20:3: warning: implicit declaration of function 'RCC_PCLK1Config' [-Wimplicit-function-declaration]
   RCC_PCLK1Config(RCC_HCLK_Div1);
   ^
prog.c:20:19: error: 'RCC_HCLK_Div1' undeclared (first use in this function)
   RCC_PCLK1Config(RCC_HCLK_Div1);
                   ^
prog.c:21:3: warning: implicit declaration of function 'RCC_PCLK2Config' [-Wimplicit-function-declaration]
   RCC_PCLK2Config(RCC_HCLK_Div1);
   ^
prog.c:22:3: warning: implicit declaration of function 'RCC_SYSCLKConfig' [-Wimplicit-function-declaration]
   RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
   ^
prog.c:22:20: error: 'RCC_SYSCLKSource_PLLCLK' undeclared (first use in this function)
   RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
                    ^
prog.c:23:9: warning: implicit declaration of function 'RCC_GetSYSCLKSource' [-Wimplicit-function-declaration]
   while(RCC_GetSYSCLKSource() != 0x08);
         ^
prog.c:24:3: warning: implicit declaration of function 'SystemCoreClockUpdate' [-Wimplicit-function-declaration]
   SystemCoreClockUpdate();
   ^
prog.c: In function 'main':
prog.c:35:3: error: unknown type name 'uint32_t'
   uint32_t i;
   ^
prog.c:40:5: error: 'GPIOC' undeclared (first use in this function)
     GPIOC->ODR ^= GPIO_ODR_ODR0;
     ^
prog.c:40:19: error: 'GPIO_ODR_ODR0' undeclared (first use in this function)
     GPIOC->ODR ^= GPIO_ODR_ODR0;
                   ^

Standard output is empty