atoombom
Dependencies: Encoder HIDScope mbed
Fork of EMG by
main.cpp@20:4fe3cab02341, 2015-09-28 (annotated)
- Committer:
- Bartvaart
- Date:
- Mon Sep 28 10:25:22 2015 +0000
- Revision:
- 20:4fe3cab02341
- Parent:
- 19:6eefdb204444
Hoi Richard hier is een zeer geheim bestand over het filteren van EMG signalen
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
vsluiter | 0:32bb76391d89 | 1 | #include "mbed.h" |
vsluiter | 11:ce72ec658a95 | 2 | #include "HIDScope.h" |
Bartvaart | 20:4fe3cab02341 | 3 | #include "LowPassFilter.h" |
vsluiter | 0:32bb76391d89 | 4 | |
vsluiter | 4:8b298dfada81 | 5 | //Define objects |
tomlankhorst | 14:f83354387756 | 6 | AnalogIn emg(A0); //Analog input |
tomlankhorst | 14:f83354387756 | 7 | Ticker sample_timer; |
Bartvaart | 18:4ebf5e640f0c | 8 | Timer timer; |
tomlankhorst | 14:f83354387756 | 9 | HIDScope scope(1); |
Bartvaart | 18:4ebf5e640f0c | 10 | InterruptIn button(PTA4); |
Bartvaart | 18:4ebf5e640f0c | 11 | DigitalOut led(LED4); |
vsluiter | 2:e314bb3b2d99 | 12 | |
tomlankhorst | 14:f83354387756 | 13 | /** Sample function |
tomlankhorst | 14:f83354387756 | 14 | * this function samples the emg and sends it to HIDScope |
tomlankhorst | 14:f83354387756 | 15 | **/ |
tomlankhorst | 14:f83354387756 | 16 | void sample() |
vsluiter | 2:e314bb3b2d99 | 17 | { |
Bartvaart | 18:4ebf5e640f0c | 18 | if(timer.read()<5){ |
tomlankhorst | 14:f83354387756 | 19 | /* First, sample the EMG using the 'read' method of the 'AnalogIn' variable named 'emg' */ |
tomlankhorst | 14:f83354387756 | 20 | double emg_value = emg.read(); |
tomlankhorst | 14:f83354387756 | 21 | /* Second, set the sampled emg value in channel zero (the first channel) in the 'HIDScope' variable named 'scope' */ |
vsluiter | 11:ce72ec658a95 | 22 | scope.set(0,emg_value); |
tomlankhorst | 16:9f7797ffd0fb | 23 | /* Repeat the step above if required for more channels (channel 0 up to 5 = 6 channels) */ |
tomlankhorst | 14:f83354387756 | 24 | /* Finally, send all channels to the PC at once */ |
vsluiter | 11:ce72ec658a95 | 25 | scope.send(); |
Bartvaart | 18:4ebf5e640f0c | 26 | } |
Bartvaart | 18:4ebf5e640f0c | 27 | if(emg.read()>=0.7){ |
Bartvaart | 18:4ebf5e640f0c | 28 | led.write(0); |
Bartvaart | 18:4ebf5e640f0c | 29 | led.write(1); |
Bartvaart | 18:4ebf5e640f0c | 30 | } |
vsluiter | 2:e314bb3b2d99 | 31 | } |
vsluiter | 0:32bb76391d89 | 32 | |
Bartvaart | 18:4ebf5e640f0c | 33 | void time(){ |
Bartvaart | 18:4ebf5e640f0c | 34 | timer.start(); |
Bartvaart | 18:4ebf5e640f0c | 35 | } |
Bartvaart | 18:4ebf5e640f0c | 36 | |
vsluiter | 0:32bb76391d89 | 37 | int main() |
vsluiter | 0:32bb76391d89 | 38 | { |
Bartvaart | 18:4ebf5e640f0c | 39 | led=!led; |
tomlankhorst | 14:f83354387756 | 40 | /**Attach the 'sample' function to the timer 'sample_timer'. |
tomlankhorst | 14:f83354387756 | 41 | * this ensures that 'sample' is executed every... 0.002 seconds |
vsluiter | 4:8b298dfada81 | 42 | */ |
Bartvaart | 18:4ebf5e640f0c | 43 | button.fall(&time); |
Bartvaart | 20:4fe3cab02341 | 44 | sample_timer.attach(&sample, 0.002); //500 Hz |
Bartvaart | 20:4fe3cab02341 | 45 | |
Bartvaart | 20:4fe3cab02341 | 46 | biquadTicker.attach(&computeBiquad, 0.01); // 100 Hz |
Bartvaart | 20:4fe3cab02341 | 47 | |
tomlankhorst | 14:f83354387756 | 48 | /*empty loop, sample() is executed periodically*/ |
tomlankhorst | 15:0da764eea774 | 49 | while(1) {} |
vsluiter | 0:32bb76391d89 | 50 | } |