From c2a1510b16e5fa929328957823d65017e75a40d3 Mon Sep 17 00:00:00 2001
From: adb <info@adb.sh>
Date: Thu, 19 Nov 2020 22:53:17 +0100
Subject: [PATCH] send NRF

---
 ATEMtoNRF/ATEMtoNRF.ino | 58 ++++++++++++++++++++++++++++++++++++++---
 1 file changed, 54 insertions(+), 4 deletions(-)

diff --git a/ATEMtoNRF/ATEMtoNRF.ino b/ATEMtoNRF/ATEMtoNRF.ino
index d39a4fb..db99642 100644
--- a/ATEMtoNRF/ATEMtoNRF.ino
+++ b/ATEMtoNRF/ATEMtoNRF.ino
@@ -1,6 +1,8 @@
 #include <SPI.h>
 #include <UIPEthernet.h>
 #include <UIP_ATEM.h>
+#include <RF24.h>
+#include <nRF24L01.h>
 
 //Ethernet
 byte mac[] = {0xAA, 0xDD, 0xBB, 0x10, 0x01, 0x01};
@@ -12,6 +14,12 @@ ATEM AtemSwitcher(IPAddress(192, 168, 0, 50), 56417);
 //tally LEDs
 const int tallyLED[] = {2,3};
 const int tallyLEDlength = 2;
+boolean tallyLEDstat[2];
+
+//init NRF
+RF24 radio (7, 8);
+const uint16_t address = 0xADB5;
+uint16_t datasend = 0;
 
 //define min interval to send data
 unsigned long currentTime = millis();
@@ -26,20 +34,62 @@ void setup(){
 
   //start Ethernet
   Ethernet.begin(mac,ip);
-  
+
+  //start Serial
   Serial.begin(9600);  
 
   //connect to the switcher
   AtemSwitcher.serialOutput(true);
   AtemSwitcher.connect();
+
+  //start NRF
+  radio.begin();
+  radio.openWritingPipe(address);
+  radio.setPALevel(RF24_PA_MIN);
+  radio.setDataRate(RF24_1MBPS);
+  //radio.disableDynamicPayloads();
+  radio.setAutoAck(false);
+  radio.disableCRC();
+  radio.stopListening();
+
+  delay(100);
 }
 
 void loop(){
-  //check for new packets
+  //check for new packages
   AtemSwitcher.runLoop();
 
-  //write tally LEDs
+  previousTime = currentTime;
+  currentTime = millis();
+  
+  if (dataChanged() || currentTime - previousTime >= intervalTime)
+    sendNRF();
+}
+
+void sendNRF(){
+  for (int i=0; i < tallyLEDlength; i++) {
+    datasend = (datasend << 1) + tallyLEDstat[i];
+  }
+  datasend = datasend << (8 - tallyLEDlength);
+  datasend = (datasend << 8) + getChecksum(datasend && 0xFF);
+  
+  radio.writeFast(&datasend, sizeof(datasend));
+}
+
+boolean dataChanged(){
+  boolean changed = false;
   for (int i=0; i < tallyLEDlength; i++){
-    digitalWrite(tallyLED[i], !AtemSwitcher.getProgramTally(i+1));
+    if (AtemSwitcher.getProgramTally(i+1) == tallyLEDstat[i]){
+      tallyLEDstat[i] = AtemSwitcher.getProgramTally(i+1);
+      digitalWrite(tallyLED[i], !AtemSwitcher.getProgramTally(i+1));
+      changed = true;
+    }
   }
+  return changed;
+}
+
+uint8_t getChecksum(uint8_t data){
+  uint8_t checksum = 0;
+  for (int i=8; i<8; i++) checksum += (data >> i) && 1;
+  return checksum;
 }