XBOX360: Add RF module support

Firmware/platformio.ini

@@ -21,6 +21,7 @@ src_filter =
     +<lib/LUFA/LUFA/Drivers/USB/Class/Common/*.c>
     +<lib/LUFA/LUFA/Drivers/USB/Class/Device/*.c>
     +<lib/UHS/*.cpp>
+    +<lib/XBOXRF/*.c>
 
 lib_deps = Wire, SPI
 
@@ -30,6 +31,7 @@ build_flags =
     -Wall
     -Isrc/lib/UHS
     -Isrc/lib/LUFA
+    -Isrc/lib/XBOXRF
 
 [env:MASTER_360WLESS_360W_STEELBATTALION]
 build_flags =

Firmware/src/lib/XBOXRF/xboxrf.c

@@ -0,0 +1,67 @@
+#include <Arduino.h>
+
+int8_t cmd_boot[10] = {0, 0, 1, 0, 0, 0, 0, 1, 0, 1};     //Init and show boot anim
+int8_t cmd_sync[10] = {0, 0, 0, 0, 0, 0, 0, 1, 0, 0};     //Sync
+int8_t cmd_greenled[10] = {0, 0, 1, 0, 1, 1, 0, 0, 0, 0}; //Set green LEDs, Lowest 4 bits controller quadrant
+int8_t cmd_redled[10] = {0, 0, 1, 0, 1, 0, 0, 0, 0, 0};   //Set red LEDs, Lowest 4 bits controller quadrant
+
+static int8_t _data_pin = -1;
+static int8_t _clock_pin = -1;
+static int8_t _connected[4] = {0, 0, 0, 0};
+
+static void rf360_send(int8_t *cmd)
+{
+    if (_data_pin == -1)
+        return;
+
+    if (_clock_pin == -1)
+        return;
+
+    pinMode(_data_pin, OUTPUT);
+    digitalWrite(_data_pin, LOW);
+    //Bitbang serial out
+    int prev = 1;
+    for (int i = 0; i < 10; i++)
+    {
+        digitalWrite(LED_BUILTIN, HIGH);
+        while (prev == digitalRead(_clock_pin))
+            ;
+        prev = digitalRead(_clock_pin);
+        digitalWrite(_data_pin, cmd[i]);
+        while (prev == digitalRead(_clock_pin))
+            ;
+        prev = digitalRead(_clock_pin);
+        digitalWrite(LED_BUILTIN, LOW);
+    }
+    digitalWrite(_data_pin, HIGH);
+    pinMode(_data_pin, INPUT);
+}
+
+void rf360_init(int data_pin, int clock_pin)
+{
+    _data_pin = data_pin;
+    _clock_pin = clock_pin;
+    pinMode(_data_pin, INPUT);
+    pinMode(_clock_pin, INPUT);
+    //Required on boot
+    rf360_send(cmd_boot);
+    //Send sync commannd every boot (FIXME?)
+    rf360_send(cmd_sync);
+}
+
+void rf360_updateled(int controller, int8_t connected)
+{
+    if (controller >= 4)
+        return;
+
+    //If the connection state of the controller has changed,
+    //update that LED quadrant accordingly
+    if (connected != _connected[controller])
+    {
+        int8_t cmd[10];
+        memcpy(cmd, cmd_greenled, sizeof(cmd));
+        cmd[6 + controller] = (int8_t)connected;
+        rf360_send(cmd);
+        _connected[controller] = (connected > 0);
+    }
+}

Firmware/src/lib/XBOXRF/xboxrf.h

@@ -0,0 +1,16 @@
+#ifndef XBOXRF_H_
+#define XBOXRF_H_
+
+#if defined(__cplusplus)
+extern "C"
+{
+#endif
+
+void rf360_init(int data_pin, int clock_pin);
+void rf360_updateled(int controller, int8_t connected);
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* XBOXRF_H_ */

Firmware/src/main.cpp

@@ -26,6 +26,7 @@ In settings.h you can configure the following options:
 #include "xiddevice.h"
 #include "Wire.h"
 #include "EEPROM.h"
+#include "xboxrf.h"
 
 #ifdef MASTER
 #include <XBOXRECV.h>
@@ -193,6 +194,9 @@ int main(void)
         Xbox360Wireless.chatPadLedQueue[i][3] = 0xFF;
         Xbox360Wireless.chatPadInitNeeded[i] = 1;
     }
+
+    //Init Xbox360 RF module
+    rf360_init(4 /*data pin*/, 5 /*clock pin*/);
 #endif
 
 #ifdef SUPPORTBATTALION
@@ -783,6 +787,8 @@ int main(void)
                     Wire.endTransmission(true);
                 }
             }
+
+            rf360_updateled(i, controllerConnected(i));
         } //End master for loop
 
         //Handle Player 1 controller connect/disconnect events.