It shows by an example how to read an Analog input signal
Dependencies: mbed
Il Circuito
main.cpp@1:45c3cb7f4e8e, 2018-11-20 (annotated)
- Committer:
- StefanoArrigoni
- Date:
- Tue Nov 20 10:40:11 2018 +0000
- Revision:
- 1:45c3cb7f4e8e
- Parent:
- 0:4a795cf05594
It shows by an example how to read an Analog input signal
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
perlatecnica | 0:4a795cf05594 | 1 | /**************************************************** |
perlatecnica | 0:4a795cf05594 | 2 | * FAST PROTOTYPING WITH NUCLEO * |
perlatecnica | 0:4a795cf05594 | 3 | * Example Code 06: Variable resistor * |
perlatecnica | 0:4a795cf05594 | 4 | * Author: Mauro D'Angelo * |
perlatecnica | 0:4a795cf05594 | 5 | *****************************************************/ |
perlatecnica | 0:4a795cf05594 | 6 | |
perlatecnica | 0:4a795cf05594 | 7 | #include "mbed.h" |
perlatecnica | 0:4a795cf05594 | 8 | |
perlatecnica | 0:4a795cf05594 | 9 | // Instanzia un oggetto di tipo AnalogIn che chiamo analog_value, e lo assegna al pin A0 |
perlatecnica | 0:4a795cf05594 | 10 | AnalogIn analog_value(A0); |
perlatecnica | 0:4a795cf05594 | 11 | |
perlatecnica | 0:4a795cf05594 | 12 | DigitalOut led(LED1); |
perlatecnica | 0:4a795cf05594 | 13 | |
perlatecnica | 0:4a795cf05594 | 14 | int main() { |
perlatecnica | 0:4a795cf05594 | 15 | float meas; |
perlatecnica | 0:4a795cf05594 | 16 | |
perlatecnica | 0:4a795cf05594 | 17 | while(1) { |
perlatecnica | 0:4a795cf05594 | 18 | meas = analog_value.read(); // It reads the analog input value (value from 0.0 to 1.0) |
perlatecnica | 0:4a795cf05594 | 19 | meas = meas * 3300; // Change the value to be in the 0 to 3300 range |
perlatecnica | 0:4a795cf05594 | 20 | printf("measure = %.2f mV\r\n", meas); |
perlatecnica | 0:4a795cf05594 | 21 | if (meas > 2000) { // If the value is greater than 2V then switch the LED on |
perlatecnica | 0:4a795cf05594 | 22 | led = 1; |
perlatecnica | 0:4a795cf05594 | 23 | } |
perlatecnica | 0:4a795cf05594 | 24 | else { |
perlatecnica | 0:4a795cf05594 | 25 | led = 0; |
perlatecnica | 0:4a795cf05594 | 26 | } |
perlatecnica | 0:4a795cf05594 | 27 | wait(0.2); // 200 ms |
perlatecnica | 0:4a795cf05594 | 28 | } |
perlatecnica | 0:4a795cf05594 | 29 | } |