/* Enable the Low Speed APB (APB1) peripheral clock.  */
void RCM_EnableAPB1PeriphClock(uint32_t APB1Periph)
/* Enable the Low Speed APB (APB1) peripheral clock.  */
void RCM_EnableAPB1PeriphClock(uint32_t APB1Periph)
{
    RCM->APB1CLKEN |= APB1Periph;
}