##### How to use this driver ##### 00052 ============================================================================== 00053 [..] 00054 (#) Enable the GPIO APB2 clock using the following function : __HAL_GPIOx_CLK_ENABLE(). 00055 00056 (#) Configure the GPIO pin(s) using HAL_GPIO_Init(). 00057 (++) Configure the IO mode using "Mode" member from GPIO_InitTypeDef structure 00058 (++) Activate Pull-up, Pull-down resistor using "Pull" member from GP