Find the C program of an Mcs51 microcontroller about the acquisition of A D conversion data

There is an ADC0804 acquisition program, Sensible electronic design VGZ

Don't know what chip you choose? adc0809?

It's not a big question, but you can talk about it.

I'm really anxious for you, but do you think who will make software for you without hardware diagrams?

Awesome, I'll only remember it tomorrow.

The input voltage range of the A D chip is unipolar, and the input negative voltage is limited to a minimum value of 0V. You check the information of the A D chip to see if you can set the input voltage to bipolar, if not, you have to move the input voltage up to unipolar, and the data output by A D will be subtracted from the intermediate value after entering the single-chip microcomputer, and it will be restored to the bipolar voltage.

It is enough to subtract the AD conversion value of the bias voltage from the data read by the microcontroller.

ad_vo=float(ad_val)*;The resolution is eight bits 2 to the eighth power, so it's 256, which means that your reference voltage is 5V, and the number of the collected is AD Val (divide 5V into 256 parts), and AD Val is the fraction collected, so AD Val 256*5V gets the voltage value.

ad val is an ad sample, not the actual value you want.

AD VO is to convert your AD sampled value into an actual value.

num=num*5*10/256;

If it is num*5 256, it is the real voltage value, if it is num=num*5*10 256; This is to increase the voltage by a factor of ten, because if you don't define the variable as a floating point, then the result is only a single digit, and the decimal places are ignored.

This means that you are 8-bit AD, the benchmark is 5V, each codeword represents 5 256V, and the other 10 is the multiplication factor you request.

If you are willing to pay money, it is recommended that you go directly to the seller who sells PIC single-chip microcomputer development boards to buy.