Iris van Leeuwen
2 losse EMG signalen van de biceps en deltoid
Dependencies: HIDScope MODSERIAL mbed-dsp mbed Encoder
Fork of
Lampje_EMG_Gr6
by 
Jesse Kaiser
Revision 0:db396b9f4b4c, committed 2014-10-15
- Comitter:
- jessekaiser
- Date:
- Wed Oct 15 14:07:03 2014 +0000
- Child:
- 1:099b19376f16
- Commit message:
- Begin met EMG implementeren;
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/HIDScope.lib Wed Oct 15 14:07:03 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/tomlankhorst/code/HIDScope/#e44574634162
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MODSERIAL.lib Wed Oct 15 14:07:03 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/Sissors/code/MODSERIAL/#180e968a751e
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Oct 15 14:07:03 2014 +0000
@@ -0,0 +1,171 @@
+#include "mbed.h"
+#include "HIDScope.h"
+#include "arm_math.h"
+#include "MODSERIAL.h"
+
+Serial pc(USBTX, USBRX); // tx, rx
+DigitalOut myled1(LED_RED);
+DigitalOut myled2(LED_GREEN);
+DigitalOut myled3(LED_BLUE);
+PwmOut filtered_emg(PTD4);
+
+//Define objects
+AnalogIn emg0(PTB1); //Analog input
+HIDScope scope(2);
+
+arm_biquad_casd_df1_inst_f32 lowpass;
+//constants for 5Hz lowpass
+float lowpass_const[] = {0.8005910266528647, 1.6011820533057295, 0.8005910266528647, -1.5610153912536877, -0.6413487153577715};
+//state values
+float lowpass_states[4];
+arm_biquad_casd_df1_inst_f32 highpass;
+//constants for 0.5Hz highpass
+float highpass_const[] = {0.956542835577484, -1.913085671154968, 0.956542835577484, 1.911196288237583, -0.914975054072353};
+//state values
+float highpass_states[4];
+
+
+/** Looper function
+* functions used for Ticker and Timeout should be of type void <name>(void)
+* i.e. no input arguments, no output arguments.
+* if you want to change a variable that you use in other places (for example in main)
+* you will have to make that variable global in order to be able to reach it both from
+* the function called at interrupt time, and in the main function.
+* To make a variable global, define it under the includes.
+* variables that are changed in the interrupt routine (written to) should be made
+* 'volatile' to let the compiler know that those values may change outside the current context.
+* i.e.: "volatile uint16_t emg_value;" instead of "uint16_t emg_value"
+* in the example below, the variable is not re-used in the main function, and is thus declared
+* local in the looper function only.
+**/
+void looper()
+{
+ /*variable to store value in*/
+ uint16_t emg_value;
+ float filtered_emg;
+ float emg_value_f32;
+ /*put raw emg value both in red and in emg_value*/
+ emg_value = emg0.read_u16(); // read direct ADC result, converted to 16 bit integer (0..2^16 = 0..65536 = 0..3.3V)
+ emg_value_f32 = emg0.read();
+
+ //process emg
+ arm_biquad_cascade_df1_f32(&highpass, &emg_value_f32, &filtered_emg, 1 );
+ filtered_emg = fabs(filtered_emg);
+ arm_biquad_cascade_df1_f32(&lowpass, &filtered_emg, &filtered_emg, 1 );
+
+ /*send value to PC. */
+ scope.set(0,emg_value); //uint value
+ scope.set(1,filtered_emg); //processed float
+ scope.send();
+
+}
+
+void BlinkRed(int n)
+{
+ for (int i=0; i<n; i++) {
+ myled1 = 1;
+ myled2 = 1;
+ myled3 = 1;
+ wait(1);
+ myled1 = 0;
+ myled2 = 1;
+ myled3 = 1;
+ wait(1);
+ }
+}
+
+int main()
+{
+ pc.baud(115200);
+
+ Ticker log_timer;
+ //set up filters. Use external array for constants
+ arm_biquad_cascade_df1_init_f32(&lowpass,1 , lowpass_const, lowpass_states);
+ arm_biquad_cascade_df1_init_f32(&highpass,1 ,highpass_const,highpass_states);
+
+ /**Here you attach the 'void looper(void)' function to the Ticker object
+ * The looper() function will be called every 0.01 seconds.
+ * Please mind that the parentheses after looper are omitted when using attach.
+ */
+ log_timer.attach(looper, 0.001);
+ while(1) //Loop
+ {
+ /*Empty!*/
+ /*Everything is handled by the interrupt routine now!*/
+ {
+ char c = '0';
+ while(1) {
+ pc.printf("Het programma blijft knipperen totdat er op '1' wordt gedrukt.\n");
+ do {
+ myled1 = 1;
+ myled2 = 1;
+ myled3 = 1;
+ wait(1);
+ myled1 = 1;
+ myled2 = 0;
+ myled3 = 1;
+ wait(1);
+ if(pc.readable()) {
+ c = pc.getc();
+ }
+ } while(filtered_emg < 0.04);
+ //c = pc.getc();
+ while(filtered_emg.read() > 0.04) { //Wanneer er op 1 wordt gedrukt gaat het lampje rood knipperen
+ c = '0';
+ BlinkRed(2);
+
+ if (pc.readable()) { //Wanneer er binnen de vastgestelde tijd weer op 1 wordt gedrukt, gaat het lampje blauw knipperen, anders reset.
+ c = pc.getc();
+ c = '0';
+ myled1 = 1;
+ myled2 = 1;
+ myled3 = 1;
+ wait(1);
+ myled1 = 1;
+ myled2 = 1;
+ myled3 = 0;
+ wait(1);
+ myled1 = 1;
+ myled2 = 1;
+ myled3 = 1;
+ wait(1);
+ myled1 = 1;
+ myled2 = 1;
+ myled3 = 0;
+ wait(1);}
+ else if (c != '1') {
+ break; }
+
+ if(pc.readable()) {
+ c = pc.getc();
+ myled1 = 1;
+ myled2 = 0;
+ myled3 = 1;
+ wait(5); //Dit wordt de duur van het slaan en teruggaan naar de beginpositie totdat er opnieuw gemeten kan worden.
+ c = '0';
+ }
+ }
+ }
+ }
+ }
+}
+
+int i;
+
+int a(void)
+{
+ i=22;
+ return i;
+}
+
+void b (void)
+{
+ int i;
+
+ i=66;
+ int j = a();
+ pc.print(i);
+ }
+
+b();
+
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dsp.lib Wed Oct 15 14:07:03 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/teams/mbed-official/code/mbed-dsp/#7a284390b0ce
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Oct 15 14:07:03 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/552587b429a1 \ No newline at end of file