Projects/RelayBoard/RelayBoard.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2018.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2010  OBinou (obconseil [at] gmail [dot] com)
  11   Copyright 2018  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  12
  13   Permission to use, copy, modify, distribute, and sell this
  14   software and its documentation for any purpose is hereby granted
  15   without fee, provided that the above copyright notice appear in
  16   all copies and that both that the copyright notice and this
  17   permission notice and warranty disclaimer appear in supporting
  18   documentation, and that the name of the author not be used in
  19   advertising or publicity pertaining to distribution of the
  20   software without specific, written prior permission.
  21
  22   The author disclaims all warranties with regard to this
  23   software, including all implied warranties of merchantability
  24   and fitness.  In no event shall the author be liable for any
  25   special, indirect or consequential damages or any damages
  26   whatsoever resulting from loss of use, data or profits, whether
  27   in an action of contract, negligence or other tortious action,
  28   arising out of or in connection with the use or performance of
  29   this software.
  30 */
  31
  32 /** \file
  33  *
  34  *  Main source file for the RelayBoard program. This file contains the main tasks of
  35  *  the project and is responsible for the initial application hardware configuration.
  36  */
  37
  38 #include "RelayBoard.h"
  39
  40
  41 /** Main program entry point. This routine contains the overall program flow, including initial
  42  *  setup of all components and the main program loop.
  43  */
  44 int main(void)
  45 {
  46         SetupHardware();
  47
  48         GlobalInterruptEnable();
  49
  50         for (;;)
  51           USB_USBTask();
  52 }
  53
  54 /** Configures the board hardware and chip peripherals for the project's functionality. */
  55 void SetupHardware(void)
  56 {
  57 #if (ARCH == ARCH_AVR8)
  58         /* Disable watchdog if enabled by bootloader/fuses */
  59         MCUSR &= ~(1 << WDRF);
  60         wdt_disable();
  61
  62         /* Disable clock division */
  63         clock_prescale_set(clock_div_1);
  64 #endif
  65
  66         /* Hardware Initialization */
  67         USB_Init();
  68
  69         /* Initialize Relays */
  70         DDRC  |=  ALL_RELAYS;
  71         PORTC &= ~ALL_RELAYS;
  72 }
  73
  74 /** Event handler for the library USB Control Request reception event. */
  75 void EVENT_USB_Device_ControlRequest(void)
  76 {
  77     const uint8_t SerialNumber[5] = { 0, 0, 0, 0, 1 };
  78         uint8_t ControlData[2]        = { 0, 0 };
  79
  80     switch (USB_ControlRequest.bRequest)
  81         {
  82                 case 0x09:
  83                         if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
  84                         {
  85                                 LEDs_ToggleLEDs(LEDS_LED1);
  86
  87                                 Endpoint_ClearSETUP();
  88
  89                                 Endpoint_Read_Control_Stream_LE(ControlData, sizeof(ControlData));
  90                                 Endpoint_ClearIN();
  91
  92                                 switch (USB_ControlRequest.wValue)
  93                                 {
  94                                         case 0x303:
  95                                                 if (ControlData[1]) PORTC &= ~RELAY1; else PORTC |= RELAY1;
  96                                                 break;
  97                                         case 0x306:
  98                                                 if (ControlData[1]) PORTC &= ~RELAY2; else PORTC |= RELAY2;
  99                                                 break;
 100                                         case 0x309:
 101                                                 if (ControlData[1]) PORTC &= ~RELAY3; else PORTC |= RELAY3;
 102                                                 break;
 103                                         case 0x30c:
 104                                                 if (ControlData[1]) PORTC &= ~RELAY4; else PORTC |= RELAY4;
 105                                                 break;
 106                                 }
 107                         }
 108
 109                         break;
 110                 case 0x01:
 111                         if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
 112                         {
 113                                 LEDs_ToggleLEDs(LEDS_LED1);
 114
 115                                 Endpoint_ClearSETUP();
 116
 117                                 switch (USB_ControlRequest.wValue)
 118                                 {
 119                                         case 0x301:
 120                                                 Endpoint_Write_Control_Stream_LE(SerialNumber, sizeof(SerialNumber));
 121                                                 break;
 122                                         case 0x303:
 123                                                 ControlData[1] = (PORTC & RELAY1) ? 2 : 3;
 124                                                 break;
 125                                         case 0x306:
 126                                                 ControlData[1] = (PORTC & RELAY2) ? 2 : 3;
 127                                                 break;
 128                                         case 0x309:
 129                                                 ControlData[1] = (PORTC & RELAY3) ? 2 : 3;
 130                                                 break;
 131                                         case 0x30c:
 132                                                 ControlData[1] = (PORTC & RELAY4) ? 2 : 3;
 133                                                 break;
 134                                 }
 135
 136                                 if (ControlData[1])
 137                                   Endpoint_Write_Control_Stream_LE(ControlData, sizeof(ControlData));
 138
 139                                 Endpoint_ClearOUT();
 140                         }
 141
 142                         break;
 143         }
 144 }
 145