disable ack for old cams

Author: Pixelbo

examples/old_model/old_model.ino

@@ -0,0 +1,44 @@
+#include "Arduino.h"
+#include <Pelco_And_Arduino.h>
+
+/*
+This exemple is based on the simple example from examples\simple\simple.ino
+However, it is designed for the old model of the Pelco cameras.
+The old models works in the protocol RS422 so it need 2 pair of cable to communicate.
+If you have only one pair (preferably for sending commands), you can disable acknoledge when sending commands
+
+*/
+
+PelcoCamBus MyPelcoBus(6,  // TX pin (Arduino to Cam)
+                       7,  // RX pin (Cam to Arduino)
+                       8); // RE pin for manual switching modules set to -1 if it is a auto module (like a groove one)
+
+void setup() {
+
+    Serial.begin(9600);
+
+    // Begin the serial communication
+    MyPelcoBus.begin(PELCO_D9600, true);
+
+    // Send stop, send_command will return a bool that indicates if the cameras sended its ACK
+    // It's a good way to see if the camera is plugged in
+    while (!MyPelcoBus.send_command(1, STOP)) {
+        Serial.println("Camera not plugged?");
+        delay(1000);
+    }
+    Serial.println("Init Finished!");
+}
+
+void loop() {
+
+    //Pan to the left with max speed before turbo
+    MyPelcoBus.send_command(1, PAN_L, 0x3F, 0x00, true);
+    delay(1000);
+    MyPelcoBus.send_command(1, STOP); //Stop the camera
+    delay(1000);
+    //Pan to the left with less speed than the tilt speed that goes up
+    MyPelcoBus.send_command(1, PAN_L_TILT_U, 0x10, 0xFF, true);
+    delay(1000);
+    MyPelcoBus.send_command(1, STOP); //Stop the camera
+    delay(1000);
+}

src/Pelco_And_Arduino.cpp

@@ -99,7 +99,7 @@ void PelcoCamBus::begin(uint32_t config, bool log_messages = false) {
  */
 
 bool PelcoCamBus::send_command(uint8_t address, uint8_t command, uint16_t data1 = 0x00, uint8_t data2 = 0x00,
-                               bool request) {
+                               bool disableACK) {
     messToCamera[0] = 0xFF;    // The first byte is always FF (sync)
     messToCamera[1] = address; // the second is the adress
 
@@ -158,7 +158,7 @@ bool PelcoCamBus::send_command(uint8_t address, uint8_t command, uint16_t data1
 
     (*SerialCamBus).write(messToCamera, sizeof(messToCamera)); // Write to the camera
 
-    if (!request) { // Check the response of the camera only if it isn't a request (aka a query aka check for ack)
+    if (!disableACK) { // Check the response of the camera only if it isn't a request (aka a query aka check for ack)
         int timeout = 10000; // 10 millissecond wait
 
         if (!autoModule_)

src/Pelco_And_Arduino.h

@@ -28,6 +28,7 @@ class PelcoCamBus
     uint16_t rxPin_;
     uint16_t rePin_;
 
+    bool support_rx_;
     bool log_messages_;
     bool autoModule_;
 
@@ -67,7 +68,7 @@ class PelcoCamBus
     PelcoCamBus(uint8_t rxPin, uint8_t txPin, uint8_t readEnPin = NOT_A_PIN);
     void begin(uint32_t config, bool log_messages = false);
 
-    bool send_command(uint8_t address, uint8_t command, uint16_t data1 = 0x00, uint8_t data2 = 0x00, bool request = false);
+    bool send_command(uint8_t address, uint8_t command, uint16_t data1 = 0x00, uint8_t data2 = 0x00, bool disableACK = false);
     uint16_t send_request(uint8_t address, uint8_t request, int timeout = 1000);
     bool send_raw(String hex_string); // TODO: get ACK
 };