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April 24, 2017 10:44
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| // Grove - EMG Sensor demo code | |
| // This demo will need a Grove - Led Bar to show the motion | |
| // Grove - EMG Sensor connect to A0 | |
| // Grove - LED Bar connect to D8, D9 | |
| // note: it'll take about serval seconds to detect static analog value | |
| // when you should hold your muscle static. You will see led bar from level 10 turn to | |
| // level 0, it means static analog value get ok | |
| int max_analog_dta = 300; // max analog data | |
| int min_analog_dta = 100; // min analog data | |
| int static_analog_dta = 0; // static analog data | |
| // get analog value | |
| int getAnalog(int pin) | |
| { | |
| long sum = 0; | |
| for(int i=0; i<32; i++) | |
| { | |
| sum += analogRead(pin); | |
| } | |
| int dta = sum>>5; | |
| max_analog_dta = dta>max_analog_dta ? dta : max_analog_dta; // if max data | |
| min_analog_dta = min_analog_dta>dta ? dta : min_analog_dta; // if min data | |
| return sum>>5; | |
| } | |
| void setup() | |
| { | |
| Serial.begin(115200); | |
| // | |
| // long sum = 0; | |
| // | |
| // for(int i=0; i<=10; i++) | |
| // { | |
| // for(int j=0; j<100; j++) | |
| // { | |
| // sum += getAnalog(A0); | |
| // delay(1); | |
| // } | |
| // | |
| // } | |
| // | |
| // sum /= 1000; | |
| // | |
| // static_analog_dta = sum; | |
| } | |
| int level = 5; | |
| int level_buf = 5; | |
| void loop() | |
| { | |
| int val = getAnalog(A0); // get Analog value | |
| int level2; | |
| // Serial.println("working"); | |
| Serial.println(val); | |
| if(val>static_analog_dta) // larger than static_analog_dta | |
| { | |
| level2 = 5 + map(val, static_analog_dta, max_analog_dta, 0, 5); | |
| } | |
| else | |
| { | |
| level2 = 5 - map(val, min_analog_dta, static_analog_dta, 0, 5); | |
| } | |
| // to smooth the change of led bar | |
| if(level2 > level) | |
| { | |
| level++; | |
| } | |
| else if(level2 < level) | |
| { | |
| level--; | |
| } | |
| if(level != level_buf) | |
| { | |
| level_buf = level; | |
| } | |
| delay(10); | |
| } |
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