Hi Guys,
I use STM32F103 with STPM32(single phase electric meter ic) evaluation board. i used of stpm002 firmware to connect with stpm32 and read measured data from it. like RMS voltage and..... I want activate LED1(It connected to pin 4 of STPM32) ,to produce 1000 pulse/kwh. this is part of my code:
void Metro_LedSetting(void)
{
Metro_HAL_Set_Led_Power_Config(EXT1, LED1,LED_W_ACTIVE);
HAL_Delay(5);
Metro_HAL_Set_Led_Channel_Config(EXT1, LED1, PRIMARY);
HAL_Delay(5);
Metro_HAL_Set_Led_Speed_divisor(EXT1, LED1, 0x06);
HAL_Delay(5);
Metro_HAL_Set_Led_On_Off(EXT1, LED1, DEVICE_ENABLE);
}
but I always have a 50Hz signal on LED1 pin.whit this chopper:
