DF69 datasheet(52/106 Pages) PADAUK

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DF69

DC Fan Controller

5-16-6. Using the ADC

The following example shows how to use ADC with PB0~PB3.

First, defining the selected pins:

PBC

0B_XXXX_0000;

PB0 ~ PB3 as Input

PBPH

0B_XXXX_0000;

PB0 ~ PB3 without pull-high

PBDIDR

0B_XXXX_1111;

PB0 ~ PB3digital input is disabled

Next, setting ADCC register, example as below:

ADCC

Enable, PB3;

set PB3 as ADC input

ADCC

Enable, PB2;

set PB2 as ADC input

ADCC

Enable, PB1;

set PB1 as ADC input

ADCC

Enable, PB0;

set PB0 as ADC input

Next, setting ADCM register, example as below:

ADCM

10BIT, /32;

10-bit, /32

ADCM

10BIT, /16;

10-bit, /16

ADCM

10BIT, /8;

10-bit, /8

ADCM

8BIT, /8;

8-bit, /8

Then, start the ADC conversion:

AD_START

start ADC conversion

WAIT1

AD_DONE;

wait ADC conversion result

Finally, it can read ADC result when AD_DONE is high:

WORD

Data;

two bytes result: ADCRH and ADCRL

Data

(ADCRH << 8) | ADCRL;

The ADC can be disabled by using the following method:

ADCC

Disable;

ADCC

Page 52 of 106

PDK-DS-DF69_V003 – Apr. 18, 2018

DF69 Datasheet(PDF) 52 Page - PADAUK Technology.

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