[size=11.818181991577148px] /* Enable PB7 as external PVD input so as to set it as AIN_IN */
[size=11.818181991577148px] RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
[size=11.818181991577148px] /* Configure the PVD Level to 3 (2.5V) */
[size=11.818181991577148px] PWR_PVDLevelConfig(PWR_PVDLevel_7);
[size=11.818181991577148px] /* Enable the PVD Output */
[size=11.818181991577148px] PWR_PVDCmd(ENABLE);