Контроллер видеокамеры
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Ср, 22/10/2014 - 15:13
Добрый день! Прошу помощи специалистов. Делаю контроллер видеокамеры, нашел готовое решение, но нужно внести некоторые коррективы, не соображу как. Итак
#define cmdPin 7
#define lancPin 11
#define monitorPin 12
#define recButton 6
#define zoomOutButton 5
#define zoomInButton 4
#define focusAutoButton 8
#define powerOffButton 9
#define focusNearButton 3
#define focusFarButton 2
#define monitorOnButton 10
int cmdRepeatCount;
int bitDuration = 104; //Duration of one LANC bit in microseconds.
//LANC commands byte 0 + byte 1
//Start-stop video recording
boolean REC[] = {LOW,LOW,LOW,HIGH,HIGH,LOW,LOW,LOW, LOW,LOW,HIGH,HIGH,LOW,LOW,HIGH,HIGH}; //18 33
//Zoom in from slowest to fastest speed
boolean ZOOM_IN_4[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,LOW,LOW,LOW,HIGH,LOW,LOW,LOW}; //28 08
//Zoom out from slowest to fastest speed
boolean ZOOM_OUT_4[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,LOW,LOW,HIGH,HIGH,LOW,LOW,LOW}; //28 18
//Focus control. Camera must be switched to manual focus
boolean FOCUS_NEAR[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,HIGH,LOW,LOW,LOW,HIGH,HIGH,HIGH}; //28 47
boolean FOCUS_FAR[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,HIGH,LOW,LOW,LOW,HIGH,LOW,HIGH}; //28 45
//Focus Auto/Manual
boolean FOCUS_AUTO[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,HIGH,LOW,LOW,LOW,LOW,LOW,HIGH}; //28 41
boolean POWER_OFF[] = {LOW,LOW,LOW,HIGH,HIGH,LOW,LOW,LOW, LOW,HIGH,LOW,HIGH,HIGH,HIGH,HIGH,LOW}; //18 5E
void setup() {
pinMode(lancPin, INPUT); //listens to the LANC line
pinMode(cmdPin, OUTPUT); //writes to the LANC line
pinMode(monitorPin, OUTPUT);// on-off monitor
pinMode(recButton, INPUT); //start-stop recording button
digitalWrite(recButton, HIGH); //turn on an internal pull up resistor
pinMode(zoomOutButton, INPUT);
digitalWrite(zoomOutButton, HIGH);
pinMode(zoomInButton, INPUT);
digitalWrite(zoomInButton, HIGH);
pinMode(focusNearButton, INPUT);
digitalWrite(focusNearButton, HIGH);
pinMode(focusFarButton, INPUT);
digitalWrite(focusFarButton, HIGH);
pinMode(focusAutoButton, INPUT);
digitalWrite(focusAutoButton, HIGH);
pinMode(powerOffButton, INPUT);
digitalWrite(powerOffButton, HIGH);
pinMode(monitorOnButton, INPUT);
digitalWrite(monitorOnButton, HIGH);
digitalWrite(cmdPin, LOW); //set LANC line to +5V
delay(5000); //Wait for camera to power up completly
bitDuration = bitDuration - 8; //Writing to the digital port takes about 8 microseconds so only 96 microseconds are left for each bit
}
void loop() {
if (!digitalRead(recButton)) {
lancCommand(REC);
}
if (!digitalRead(zoomOutButton)) {
lancCommand(ZOOM_OUT_4);
}
if (!digitalRead(zoomInButton)) {
lancCommand(ZOOM_IN_4);
}
if (!digitalRead(focusNearButton)) {
lancCommand(FOCUS_NEAR);
}
if (!digitalRead(focusFarButton)) {
lancCommand(FOCUS_FAR);
}
if (!digitalRead(focusAutoButton)) {
lancCommand(FOCUS_AUTO);
delay(300);
digitalWrite(monitorPin, LOW);
}
if (!digitalRead(powerOffButton)) {
lancCommand(POWER_OFF);
}
if (!digitalRead(monitorOnButton)) {
digitalWrite(monitorPin, HIGH);
}
}
void lancCommand(boolean lancBit[]) {
cmdRepeatCount = 0;
while (cmdRepeatCount < 5) { //repeat 5 times to make sure the camera accepts the command
while (pulseIn(lancPin, HIGH) < 5000) {
//"pulseIn, HIGH" catches any 0V TO +5V TRANSITION and waits until the LANC line goes back to 0V
//"pulseIn" also returns the pulse duration so we can check if the previous +5V duration was long enough (>5ms) to be the pause before a new 8 byte data packet
//Loop till pulse duration is >5ms
}
//LOW after long pause means the START bit of Byte 0 is here
delayMicroseconds(bitDuration); //wait START bit duration
//Write the 8 bits of byte 0
//Note that the command bits have to be put out in reverse order with the least significant, right-most bit (bit 0) first
for (int i=7; i>-1; i--) {
digitalWrite(cmdPin, lancBit[i]); //Write bits.
delayMicroseconds(bitDuration);
}
//Byte 0 is written now put LANC line back to +5V
digitalWrite(cmdPin, LOW);
delayMicroseconds(10); //make sure to be in the stop bit before byte 1
while (digitalRead(lancPin)) {
//Loop as long as the LANC line is +5V during the stop bit
}
//0V after the previous stop bit means the START bit of Byte 1 is here
delayMicroseconds(bitDuration); //wait START bit duration
//Write the 8 bits of Byte 1
//Note that the command bits have to be put out in reverse order with the least significant, right-most bit (bit 0) first
for (int i=15; i>7; i--) {
digitalWrite(cmdPin,lancBit[i]); //Write bits
delayMicroseconds(bitDuration);
}
//Byte 1 is written now put LANC line back to +5V
digitalWrite(cmdPin, LOW);
cmdRepeatCount++; //increase repeat count by 1
/*Control bytes 0 and 1 are written, now don’t care what happens in Bytes 2 to 7
and just wait for the next start bit after a long pause to send the first two command bytes again.*/
}//While cmdRepeatCount < 5
}
Все работает как надо, но нужно сделать, чтобы при нажатии кнопки POWER_OFF(строка 96) выполнялась не только команда lancCommand(POWER_OFF), но и на выходе monitorPin появлялся низкий уровень, а при нажатии monitorOn (строка 99) - высокий. Помогите пожалуйста! Заранее спасибо.
Ошибка вкралась, строки 93 и 94 лишние.
Ну и напиши digitalWrite(monitorPin, LOW), а во втором случае HIGH.
Пробовал, если не писать lancComand(POWER_OFF), то все так и работает, а с ней нет. LOW становится а на
monitorOnButtonуже не реагирует...Больше ни у кого нет мыслей по поводу?