04-01 DACOutput
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{| border="1" cellpadding="5" cellspacing="2" align="center" style="text-align: center;" | {| border="1" cellpadding="5" cellspacing="2" align="center" style="text-align: center;" | ||
|+ align="bottom"|'''PWM Ouput Connector Locations''' | |+ align="bottom"|'''PWM Ouput Connector Locations''' | ||
| - | |''' | + | |'''Signal''' |
|'''PIN NAME''' | |'''PIN NAME''' | ||
|'''BAM210E''' | |'''BAM210E''' | ||
Revision as of 17:11, 17 September 2014
This example outputs 3 different values to the Digital to Analog Converter (DAC) every 2 seconds. It outputs 0.825V, 1.65V, and 2.475V. The DAC output is on pin A5 of J8.
DAC0 for the MBED-SDK and the Bambino line of microcontrollers is mapped to the following locations:
| Signal | PIN NAME | BAM210E | BAM210 | BAM200E | BAM200 |
| DAC0 | P4_4 | J8-6 | J8-6 | S3-5 | S3-5 |
/*Program Example 4.1: Three values of DAC are output in turn on Pin DAC0. Read the output on a Digital Volt Meter.
*/
#include "mbed.h"
AnalogOut Aout(DAC0); //create an analog output on pin DAC0
int main()
{
while(1) {
Aout=0.25; // 0.25*3.3V = 0.825V
wait(2);
Aout=0.5; // 0.5*3.3V = 1.65V
wait(2);
Aout=0.75; // 0.75*3.3V = 2.475V
wait(2);
}
}
The following image shows the circuit in action.
