topic Re: ADC average values in LPC Microcontrollers

ADC average values

Alexshea — Fri, 05 Aug 2022 07:53:42 GMT

@xiangjun_rong Hi, I used the code that you recommended for calculating the average temperature. However, after using that now I don't receive any temperature. Could you please check the code once again and help me resolve that problem. I added the whole project as you asked the last time.

Re: ADC average values

ZhangJennie — Mon, 08 Aug 2022 03:54:10 GMT

@xiangjun_rong is on leave. He will answer you next week when he gets back.

Thanks,

Jun Zhang

Re: ADC average values

Alexshea — Mon, 08 Aug 2022 09:05:07 GMT

Thank you so much for letting me know. I'll wait for him

Re: ADC average values

xiangjun_rong — Tue, 16 Aug 2022 09:12:42 GMT

Hi,

you use the code:

#define TOTAL_AVERAGE_NUMBER 200
for (uint16_t i=0; i<TOTAL_AVERAGE_NUMBER; i++)
{
uivoltage=HW_ADC_Read(0);
temp=calcTemp(uivoltage);
totalTemp+=temp;

}

The above code takes a lot of time so that the core has not time to handle the interrupt.

Pls try to change

#define TOTAL_AVERAGE_NUMBER 2

and have a try.

XiangJun Rong

Re: ADC average values

Alexshea — Thu, 25 Aug 2022 19:06:02 GMT

@xiangjun_rong Hi, I tried what you said, but even setting #define TOTAL_AVERAGE_NUMBER 2 didn't solve the problem maybe because I don't have any interrupt in my code. Last time you recommended me not to use interrupt, since I'm using all the 8 adc channels. But, thanks for your help