04-01 DACOutput
From Manuals
(Difference between revisions)
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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. | 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: | ||
| + | {| border="1" cellpadding="5" cellspacing="2" align="center" style="text-align: center;" | ||
| + | |+ align="bottom"|'''PWM Ouput Connector Locations''' | ||
| + | |'''PWM1 Output''' | ||
| + | |'''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. | /*Program Example 4.1: Three values of DAC are output in turn on Pin DAC0. Read the output on a Digital Volt Meter. | ||
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:
| PWM1 Output | 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.
