werkend filter: 50 hz notch 20 hz hoogdoorlaat 80 hz laagdoorlaat geabsoluteerd vermenigvuldigd met 10
Dependencies: HIDScope mbed-dsp mbed
Fork of Project5-filtering2 by
Diff: main.cpp
- Revision:
- 5:b96b7b8facbf
- Parent:
- 4:c8ec56d87a5b
- Child:
- 6:168e7e03e166
--- a/main.cpp Thu Oct 09 13:29:37 2014 +0000 +++ b/main.cpp Thu Oct 09 13:59:08 2014 +0000 @@ -16,7 +16,7 @@ //Define objects AnalogIn emg0(PTB0); //Biceps AnalogIn emg1(PTB1); //Triceps -HIDScope scope(2); +HIDScope scope(4); arm_biquad_casd_df1_inst_f32 notch; //constants for 50Hz notch @@ -32,21 +32,32 @@ void looper() { /*variable to store value in*/ - uint16_t emg_value; - float filtered_emg; - float emg_value_f32; + uint16_t emg_value0; + uint16_t emg_value1; + float filtered_emg0; + float filtered_emg1; + float emg_value0_f32; + float emg_value1_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(); + emg_value0 = emg0.read_u16(); // read direct ADC result, converted to 16 bit integer (0..2^16 = 0..65536 = 0..3.3V) BICEPS + emg_value0_f32 = emg0.read(); + emg_value1 = emg1.read_u16(); // read direct ADC result, converted to 16 bit integer (0..2^16 = 0..65536 = 0..3.3V) TRICEPS + emg_value1_f32 = emg1.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(¬ch, &filtered_emg, &filtered_emg, 1 ); + arm_biquad_cascade_df1_f32(&highpass, &emg_value0_f32, &filtered_emg0, 1 ); + filtered_emg0 = fabs(filtered_emg0); + arm_biquad_cascade_df1_f32(¬ch, &filtered_emg0, &filtered_emg0, 1 ); + + arm_biquad_cascade_df1_f32(&highpass, &emg_value1_f32, &filtered_emg1, 1 ); + filtered_emg1 = fabs(filtered_emg1); + arm_biquad_cascade_df1_f32(¬ch, &filtered_emg1, &filtered_emg1, 1 ); /*send value to PC. */ - scope.set(0,emg_value); //uint value - scope.set(1,filtered_emg); //processed float + scope.set(0,emg_value0); //uint value + scope.set(1,filtered_emg0); //processed float + scope.set(2,emg_value1); //uint value + scope.set(3,filtered_emg1); //processed float scope.send(); }