copied over blink program from IDE developed program I wrote.

src/main.c

@@ -1,8 +1,44 @@
-#include "stdio.h"
+#include "debug.h"
 
-int main(int argc, char **argv)
+/* Global typedef */
+
+/* Global define */
+
+/* Global Variable */
+
+void GPIO_Toggle_INIT(void)
 {
-    printf("Hello!\n");
-    return 0;
+    GPIO_InitTypeDef GPIO_InitStructure = {0};
+
+    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
+    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
+    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
+    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+    GPIO_Init(GPIOA, &GPIO_InitStructure);
 }
 
+/**
+ * @fn main
+ * @brief Main program
+ * @return none
+ */
+
+int main(void)
+{
+    u8 i = 0;
+
+    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
+    SystemCoreClockUpdate();
+    Delay_Init();
+    //USART_Printf_Init(115200);
+    //printf("SystemClk:%d\r\n", SystemCoreClock);
+    //printf( "ChipID:%08x\r\n", DBGMCU_GetCHIPID() );
+    //printf("GPIO Toggle TEST\r\n");
+    GPIO_Toggle_INIT();
+
+    while(1)
+    {
+    	Delay_Ms(250);
+        GPIO_WriteBit(GPIOA, GPIO_Pin_1, (i == 0) ? (i = Bit_SET) : (i = Bit_RESET));
+    }
+}