From 27f9c895552e90f4a3cef0423ef85fa3c63a84bb Mon Sep 17 00:00:00 2001
From: Dobrica Pavlinusic <dpavlin@rot13.org>
Date: Sun, 30 Nov 2014 17:07:27 +0100
Subject: [PATCH] connect Arduino ProMini to Raspberry Pi

---
 rpi_promini/rpi_promini.ino | 93 +++++++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100644 rpi_promini/rpi_promini.ino

diff --git a/rpi_promini/rpi_promini.ino b/rpi_promini/rpi_promini.ino
new file mode 100644
index 0000000..cf22f81
--- /dev/null
+++ b/rpi_promini/rpi_promini.ino
@@ -0,0 +1,93 @@
+/*
+
+  Connect Arduino ProMini 3.3V 8Mhz Atmega328 to Raspberry Pi
+  
+  RPI pin  Arduino
+  RXD      TXD
+  TXD      RXD
+  GPIO6    RST
+
+*/
+
+#include <RCSwitch.h>
+
+
+RCSwitch mySwitch = RCSwitch();
+
+void setup() {
+  Serial.begin(9600);
+  mySwitch.enableReceive(0);  // Receiver on inerrupt 0 => that is pin #2  
+  mySwitch.enableTransmit(10); // with sender wired in receiving doesn't work, pin #10
+
+
+
+  Serial.print("press buttons on remote or send AB where A = socket (0..9), B = state (0 = off, 1 = on)\nB00...00 (24 digits) to send binary\n");
+}
+
+int serial_pos = 0;
+char serial_data[2]; // socket (0-9), state (0-1)
+char binary_data[24];
+
+void loop() {
+  if (mySwitch.available()) {
+    Serial.print(mySwitch.getReceivedBitlength());
+    Serial.print(" bits ");
+    Serial.println(mySwitch.getReceivedValue(), BIN);
+    mySwitch.resetAvailable();
+  }
+  if (Serial.available() > 0) {
+     char input = Serial.read();
+     if ( input == 'B' ) {
+       Serial.readBytesUntil('\n', binary_data, sizeof(binary_data));
+       Serial.print("send B");
+       Serial.println( binary_data );
+       mySwitch.send( binary_data );
+     } else
+     if ( input >= 0x30 && input <= 0x39 ) {
+       input = input - 0x30; // ASCII to number
+       serial_data[serial_pos++] = input;
+     } else {     
+       Serial.print("ignore: ");
+       Serial.println(input, HEX);
+     }
+     
+     if ( serial_pos == 2 ) {
+       Serial.print("socket: ");
+       Serial.print(serial_data[0], DEC);
+       Serial.print(" state: ");
+       Serial.println(serial_data[1] ? "on" : "off");
+       serial_pos = 0;
+       if ( serial_data[1] ) { // on
+         switch ( serial_data[0] ) {
+         case 1:
+           mySwitch.send("110101011101010000001100");
+           break;
+         case 2:
+           mySwitch.send("110101010111010000001100");
+           break;
+         case 3:
+           mySwitch.send("110101010101110000001100");
+           break;
+         default:
+           Serial.print("invalid switch on number ");
+           Serial.println(serial_data[0], DEC);
+         }
+       } else { // off
+         switch ( serial_data[0] ) {
+         case 1:
+           mySwitch.send("110101011101010000000011");
+           break;
+         case 2:
+           mySwitch.send("110101010111010000000011");
+           break;
+         case 3:
+           mySwitch.send("110101010101110000000011");
+           break;
+         default:
+           Serial.print("invalid switch off number ");
+           Serial.println(serial_data[0], DEC);
+         }
+       }
+     }
+  }
+}
-- 
2.20.1