by Rob Toulson and Tim Wilmshurst from textbook "Fast and Effective Embedded Systems Design: Applying the ARM mbed"
main.cpp@0:c6eda2b9bd63, 2012-08-31 (annotated)
- Committer:
- robt
- Date:
- Fri Aug 31 15:25:21 2012 +0000
- Revision:
- 0:c6eda2b9bd63
by Rob Toulson and Tim Wilmshurst from textbook "Fast and Effective Embedded Systems Design: Applying the ARM mbed"
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
robt | 0:c6eda2b9bd63 | 1 | /*Program Example 4.1: Three values of DAC are output in turn on Pin 18. Read the output on a DVM. |
robt | 0:c6eda2b9bd63 | 2 | */ |
robt | 0:c6eda2b9bd63 | 3 | #include "mbed.h" |
robt | 0:c6eda2b9bd63 | 4 | AnalogOut Aout(p18); //create an analog output on pin 18 |
robt | 0:c6eda2b9bd63 | 5 | int main() |
robt | 0:c6eda2b9bd63 | 6 | { |
robt | 0:c6eda2b9bd63 | 7 | while(1) { |
robt | 0:c6eda2b9bd63 | 8 | Aout=0.25; // 0.25*3.3V = 0.825V |
robt | 0:c6eda2b9bd63 | 9 | wait(2); |
robt | 0:c6eda2b9bd63 | 10 | Aout=0.5; // 0.5*3.3V = 1.65V |
robt | 0:c6eda2b9bd63 | 11 | wait(2); |
robt | 0:c6eda2b9bd63 | 12 | Aout=0.75; // 0.75*3.3V = 2.475V |
robt | 0:c6eda2b9bd63 | 13 | wait(2); |
robt | 0:c6eda2b9bd63 | 14 | } |
robt | 0:c6eda2b9bd63 | 15 | } |