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Arduino replaces MT-VIKI KVM remote module for changing / polling selected KVM input
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| #include <math.h> | |
| // connected to 'D+' pin on mini USB | |
| const int input_pin = 11; | |
| // connected to 'D-' pin on mini USB | |
| const int output_pin = 12; | |
| void setup() { | |
| // put your setup code here, to run once: | |
| Serial.begin(9600); | |
| pinMode(input_pin, INPUT); | |
| pinMode(output_pin, OUTPUT); | |
| digitalWrite(output_pin, HIGH); | |
| } | |
| void loop() { | |
| if (Serial.available() > 0) { | |
| int new_port = Serial.parseInt(); | |
| if (new_port >= 1 && new_port <=8) { | |
| set_port(new_port); | |
| } | |
| int port = get_port(); | |
| Serial.println(port); | |
| } | |
| } | |
| int get_port() { | |
| unsigned long duration; | |
| double ms; | |
| int p; | |
| duration = pulseIn(input_pin, LOW); | |
| ms = round(duration / 1000.0); | |
| p = ((int) ms / 20); | |
| return (p); | |
| } | |
| void set_port(int p) { | |
| digitalWrite(output_pin, LOW); | |
| delay(20); | |
| digitalWrite(output_pin, HIGH); | |
| delay(20); | |
| digitalWrite(output_pin, LOW); | |
| delay(p * 20); | |
| digitalWrite(output_pin, HIGH); | |
| delay(200); | |
| } |
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