Вот что у меня получилось.
Скетч для ардуино уно. Ардуино определяется как HID устройство. В скетче управление планшетом ресистивными кнопками и управление питанием.
Код:
// Для рулевых кнопок
uint8_t buf[8] = {
0 };
// реле питания звуковой карты
#define relePin4 11
// Задержки между нажатиями конкретных кнопок, миллисекунды
#define KEY_CH_VOL_MINUS_DELAY (200)
#define KEY_CH_VOL_PLUS_DELAY (200)
#define KEY_CH_PAUSE_DELAY (200)
#define KEY_CH_PREV_TRACK_DELAY (200)
#define KEY_CH_FORW_TRACK_DELAY (200)
#define KEY_CH_TAB_DELAY (200)
#define KEY_CH_ESC_DELAY (200)
#define KEY_CH_AUDIO_OFF_DELAY (400)
#define KEY_CH_PLUS_DELAY (200)
#define KEY_MODE_DELAY (200)
#define KEY_MODE_DELAY (200)
#define KEY_MODE_DELAY (200)
#define KEY_MODE_DELAY (200)
// Значения кнопок
#define KEY_CH_VOL_MINUS (1023)
#define KEY_CH_VOL_PLUS (1523)
#define KEY_CH_PAUSE (1500)
#define KEY_CH_PREV_TRACK (1500)
#define KEY_CH_FORW_TRACK (1500)
#define KEY_CH_TAB (1500)
#define KEY_CH_ESC (1500)
#define KEY_CH_AUDIO_OFF (700)
#define KEY_CH_PLUS (1500)
#define KEY_CH_MINUS (1500)
#define KEY_CH_MINUS (1500)
#define KEY_CH_MINUS (1500)
#define KEY_CH_MINUS (1500)
// Погрешность при чтении кнопок
#define KEY_DELTA (50)
// Коды кнопок, что отсылаем в порт внешней проге
#define CH_VOL_MINUS (226)
#define CH_VOL_PLUS (43)
#define CH_PAUSE (3)
#define CH_PREV_TRACK (4)
#define CH_FORW_TRACK (5)
#define CH_TAB (14)
#define CH_ESC (128)
#define CH_AUDIO_OFF (1)
#define CH_PLUS (6)
#define CH_MINUS (7)
#define CH_MINUS (8)
#define CH_MINUS (9)
#define CH_MINUS (12)
#define NONE (0)
// Кнопки
#define ACCPin 2 // через делитель к ACC
#define ControlPin A1 // через делитель к +12В
#define relePin1 8 // реле USB HUB
#define relePin2 9 // реле планшета (OTG)
#define relePin3 10 // реле звуковой карты (замыкания на землю)
#define ONHUB 1000 // время включения реле HUB
#define ONTablet 4000 // время включения планшета
#define ONAudio 9000 // время включения аудио
#define OFFHUB 8000 // время выключения реле HUB
#define OFFTablet 3000 // время выключения планшета
#define OFFAudio 10 // время выключения аудио
unsigned long LastTimeKeyPressed = millis();
unsigned long duration, millisold, off = 0;
boolean stateACC, relestate1, relestate2,relestate3,relestate4 = 0;
int LastKeyPressed = NONE;
int flag = 1;
int flag2 = 0;
void setup()
{
Serial.begin(9600);
pinMode(relePin1, OUTPUT);
pinMode(relePin2, OUTPUT);
pinMode(relePin3, OUTPUT);
pinMode(relePin4, OUTPUT);
}
void loop()
{
ReadSteering();
Knopki();
delay(10);
}
// Читает рулевые кнопки и пишет в порт код нажатой кнопки
void ReadSteering()
{
pinMode(relePin4, OUTPUT);
digitalWrite(relePin4,flag );
unsigned long TimeKeyPressed;
int KeyPressed = NONE;
int dt1 = analogRead(A0);
delay(10);
int dt2 = analogRead(A0);
if (abs(dt1-dt2)<=490 and dt1<1024 ) //если нет дребезга и что-то есть
{
// Регистрируем время нажатия кнопки
TimeKeyPressed = millis(); //получить реальное время
//CH_VOL_MINUS
if ( (dt1-KEY_DELTA <= KEY_CH_VOL_MINUS) and (dt1+KEY_DELTA >= KEY_CH_VOL_MINUS) )
{
if ( (LastKeyPressed != CH_VOL_MINUS) or (abs(TimeKeyPressed-LastTimeKeyPressed) >= KEY_CH_VOL_MINUS_DELAY))
{
LastKeyPressed = CH_VOL_MINUS;
buf[2] = CH_VOL_MINUS;
LastTimeKeyPressed = TimeKeyPressed;
Serial.write(buf, 8);
releaseKey();
}
}
//CH_VOL_PLUS
else if ( (dt1-KEY_DELTA <= KEY_CH_VOL_PLUS) and (dt1+KEY_DELTA >=KEY_CH_VOL_PLUS) )
{
if ( (LastKeyPressed != CH_VOL_PLUS) or (abs(TimeKeyPressed-LastTimeKeyPressed) >= KEY_CH_VOL_PLUS_DELAY) )
{
LastKeyPressed = CH_VOL_PLUS;
buf[2]=CH_VOL_PLUS;
LastTimeKeyPressed = TimeKeyPressed;
Serial.write(buf, 8);
releaseKey();
}
}
//CH_PAUSE
else if ( (dt1-KEY_DELTA <= KEY_CH_PAUSE) and (dt1+KEY_DELTA >=KEY_CH_PAUSE) )
{
if ( (LastKeyPressed != CH_PAUSE) or (abs(TimeKeyPressed-LastTimeKeyPressed) >= KEY_CH_PAUSE_DELAY) )
{
LastKeyPressed = CH_PAUSE;
buf[2]=CH_PAUSE;
LastTimeKeyPressed = TimeKeyPressed;
Serial.write(buf, 8);
releaseKey();
}
}
//CH_PREV_TRACK
else if ( (dt1-KEY_DELTA <= KEY_CH_PREV_TRACK) and (dt1+KEY_DELTA >=KEY_CH_PREV_TRACK) )
{
if ( (LastKeyPressed != CH_PREV_TRACK) or (abs(TimeKeyPressed-LastTimeKeyPressed) >= KEY_CH_PREV_TRACK_DELAY) )
{
LastKeyPressed = CH_PREV_TRACK;
buf[2]=CH_PREV_TRACK;
LastTimeKeyPressed = TimeKeyPressed;
Serial.write(buf, 8);
releaseKey();
}
}
//CH_FORW_TRACK
else if ( (dt1-KEY_DELTA <= KEY_CH_FORW_TRACK) and (dt1+KEY_DELTA >=KEY_CH_FORW_TRACK) )
{
if ( (LastKeyPressed != CH_FORW_TRACK) or (abs(TimeKeyPressed-LastTimeKeyPressed) >= KEY_CH_FORW_TRACK_DELAY) )
{
LastKeyPressed = CH_FORW_TRACK;
buf[2]=CH_FORW_TRACK;
LastTimeKeyPressed = TimeKeyPressed;
Serial.write(buf, 8);
releaseKey();
}
}
//CH_TAB
else if ( (dt1-KEY_DELTA <= KEY_CH_TAB) and (dt1+KEY_DELTA >=KEY_CH_TAB) )
{
if ( (LastKeyPressed != CH_TAB) or (abs(TimeKeyPressed-LastTimeKeyPressed) >= KEY_CH_TAB_DELAY) )
{
LastKeyPressed = CH_TAB;
buf[2]=CH_TAB;
LastTimeKeyPressed = TimeKeyPressed;
Serial.write(buf, 8);
releaseKey();
}
}
//CH_ESC
else if ( (dt1-KEY_DELTA <= KEY_CH_ESC) and (dt1+KEY_DELTA >=KEY_CH_ESC) )
{
if ( (LastKeyPressed != CH_ESC) or (abs(TimeKeyPressed-LastTimeKeyPressed) >= KEY_CH_ESC_DELAY) )
{
LastKeyPressed = CH_ESC;
buf[2]=CH_ESC;
LastTimeKeyPressed = TimeKeyPressed;
Serial.write(buf, 8);
releaseKey();
}
}
//CH_AUDIO_OFF
else if ( (dt1-KEY_DELTA <= KEY_CH_AUDIO_OFF) and (dt1+KEY_DELTA >=KEY_CH_AUDIO_OFF) )
{
if ( (LastKeyPressed != CH_AUDIO_OFF) or (abs(TimeKeyPressed-LastTimeKeyPressed) >= KEY_CH_AUDIO_OFF_DELAY)&& flag==1)
{
digitalWrite(relePin4, flag2);
flag = 0;
flag2 = 1;
}
else if ( (LastKeyPressed != CH_AUDIO_OFF) or (abs(TimeKeyPressed-LastTimeKeyPressed) >= KEY_CH_AUDIO_OFF_DELAY)&& flag==0)
{
digitalWrite(relePin4, flag2);
flag = 1;
flag2 = 0;
}
LastKeyPressed = CH_AUDIO_OFF;
LastTimeKeyPressed = TimeKeyPressed;
releaseKey();
}
//CH_PLUS
else if ( (dt1-KEY_DELTA <= KEY_CH_PLUS) and (dt1+KEY_DELTA >=KEY_CH_PLUS) )
{
if ( (LastKeyPressed != CH_PLUS) or (abs(TimeKeyPressed-LastTimeKeyPressed) >= KEY_CH_PLUS_DELAY) )
{
LastKeyPressed = CH_PLUS;
buf[2]=CH_MINUS;
LastTimeKeyPressed = TimeKeyPressed;
Serial.write(buf, 8);
releaseKey();
}
}
//CH_PLUS
else if ( (dt1-KEY_DELTA <= KEY_CH_PLUS) and (dt1+KEY_DELTA >=KEY_CH_PLUS) )
{
if ( (LastKeyPressed != CH_PLUS) or (abs(TimeKeyPressed-LastTimeKeyPressed) >= KEY_CH_PLUS_DELAY) )
{
LastKeyPressed = CH_PLUS;
buf[2]=CH_MINUS;
LastTimeKeyPressed = TimeKeyPressed;
Serial.write(buf, 8);
releaseKey();
}
}
//CH_PLUS
else if ( (dt1-KEY_DELTA <= KEY_CH_PLUS) and (dt1+KEY_DELTA >=KEY_CH_PLUS) )
{
if ( (LastKeyPressed != CH_PLUS) or (abs(TimeKeyPressed-LastTimeKeyPressed) >= KEY_CH_PLUS_DELAY) )
{
LastKeyPressed = CH_PLUS;
buf[2]=CH_MINUS;
LastTimeKeyPressed = TimeKeyPressed;
Serial.write(buf, 8);
releaseKey();
}
}
//CH_PLUS
else if ( (dt1-KEY_DELTA <= KEY_CH_PLUS) and (dt1+KEY_DELTA >=KEY_CH_PLUS) )
{
if ( (LastKeyPressed != CH_PLUS) or (abs(TimeKeyPressed-LastTimeKeyPressed) >= KEY_CH_PLUS_DELAY) )
{
LastKeyPressed = CH_PLUS;
buf[2]=CH_MINUS;
LastTimeKeyPressed = TimeKeyPressed;
Serial.write(buf, 8);
releaseKey();
}
}
//CH_PLUS
else if ( (dt1-KEY_DELTA <= KEY_CH_PLUS) and (dt1+KEY_DELTA >=KEY_CH_PLUS) )
{
if ( (LastKeyPressed != CH_PLUS) or (abs(TimeKeyPressed-LastTimeKeyPressed) >= KEY_CH_PLUS_DELAY) )
{
LastKeyPressed = CH_PLUS;
buf[2]=CH_MINUS;
LastTimeKeyPressed = TimeKeyPressed;
Serial.write(buf, 8);
releaseKey();
}
}
}
}
void releaseKey()
{
buf[0] = 0;
buf[2] = 0;
Serial.write(buf, 8); // Release key
}
void Knopki()
{
if (digitalRead(ACCPin)&&!stateACC) {
stateACC=1;
duration = millis();
}
if (!digitalRead(ACCPin)&&stateACC) {
stateACC=0;
off = millis();
}
if(digitalRead(ACCPin) && stateACC && millis ()-duration > ONHUB){
digitalWrite(relePin1, HIGH);
relestate1 = 1;
millisold = millis();
}
if(digitalRead(ACCPin) && stateACC && millis ()-duration > ONTablet){
digitalWrite(relePin2, HIGH);
relestate2 = 1;
millisold = millis();
}
if(digitalRead(ACCPin) && stateACC && millis ()-duration > ONAudio){
digitalWrite(relePin3, HIGH);
relestate3 = 1;
millisold = millis();
}
if(!digitalRead(ACCPin) && !stateACC && millis () -off> OFFHUB){
digitalWrite(relePin1, LOW);
relestate1 = 0;
millisold = millis();
}
if(!digitalRead(ACCPin) && !stateACC && millis () -off > OFFTablet){
digitalWrite(relePin2, LOW);
relestate2 = 0;
millisold = millis();
}
if(!digitalRead(ACCPin) && !stateACC && millis () -off > OFFAudio){
digitalWrite(relePin3, LOW);
relestate3 = 0;
millisold = millis();
}
}