04-03 SinusoidWave
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| - | This example outputs a sine wave on the DAC output. | + | This example outputs a sine wave on the DAC output. 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"|'''DAC0 Ouput Connector Location''' | ||
| + | |'''Signal''' | ||
| + | |'''LPC4330 PIN NAME''' | ||
| + | |'''BAM210E''' | ||
| + | |'''BAM210''' | ||
| + | |'''BAM200E''' | ||
| + | |'''BAM200''' | ||
| + | |- | ||
| + | |DAC0 | ||
| + | |P4_4 | ||
| + | |J8-6 | ||
| + | |J8-6 | ||
| + | |S3-5 | ||
| + | |S3-5 | ||
| + | |- | ||
| + | |} | ||
/*Program Example 4.3: Sine wave on DAC output. View on oscilloscope | /*Program Example 4.3: Sine wave on DAC output. View on oscilloscope | ||
| Line 17: | Line 36: | ||
} | } | ||
| + | DAC0 was captured on the oscilloscope in the image below. | ||
[[Image:BAM210_04_03.png|center|]] | [[Image:BAM210_04_03.png|center|]] | ||
Current revision as of 18:06, 17 September 2014
This example outputs a sine wave on the DAC output. 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 | LPC4330 PIN NAME | BAM210E | BAM210 | BAM200E | BAM200 |
| DAC0 | P4_4 | J8-6 | J8-6 | S3-5 | S3-5 |
/*Program Example 4.3: Sine wave on DAC output. View on oscilloscope
*/
#include "mbed.h"
AnalogOut Aout(DAC0);
float i;
int main()
{
while(1) {
for (i=0; i<2; i=i+0.05f) {
Aout=0.5f+0.5f*sin(i*3.14159f); // Compute the sine value, + half the range
wait(.001); // Controls the sine wave period
}
}
}
DAC0 was captured on the oscilloscope in the image below.
