/* Fills each init_struct member with its default value.  */
void GPIO_StructInit(GPIO_InitTypeDef *init_struct)
/* Fills each init_struct member with its default value.  */
void GPIO_StructInit(GPIO_InitTypeDef *init_struct)
{
    init_struct->GPIO_Pin  = GPIO_Pin_All;
    init_struct->GPIO_Speed = GPIO_Speed_2MHz;
    init_struct->GPIO_Mode = GPIO_Mode_FLOATING;
}