{ Simple HID device program for the PIC32MX534F064H }

{ Copyright (C)2015-2018, Philip Munts, President, Munts AM Corp.             }
{                                                                             }
{ Redistribution and use in source and binary forms, with or without          }
{ modification, are permitted provided that the following conditions are met: }
{                                                                             }
{ * Redistributions of source code must retain the above copyright notice,    }
{   this list of conditions and the following disclaimer.                     }
{                                                                             }
{ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" }
{ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE   }
{ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE  }
{ ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE   }
{ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR         }
{ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF        }
{ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS    }
{ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN     }
{ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)     }
{ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE  }
{ POSSIBILITY OF SUCH DAMAGE.                                                 }

PROGRAM test_usbhid;

VAR
  LD1 : sbit AT PORTD.4;
  LD2 : sbit AT PORTD.1;
  cmd  : ARRAY [HID_OUTPUT_REPORT_BYTES] OF Char;
  resp : ARRAY [HID_INPUT_REPORT_BYTES] OF Char;

  PROCEDURE USBInterrupt(); iv IVT_USB_1; ilevel 7; ics ICS_SOFT;

  BEGIN
    USB_Interrupt_Proc();
  END;

BEGIN
  AD1PCFG := $FFFF;  { All GPIO pins are digital }
  DDPCON := $0000;   { Disable JTAG }

  { Configure LEDs }

  TRISD.4 := 0;
  TRISD.1 := 0;

  LD1 := False;
  LD2 := False;

  { Initialize HID library }

  HID_Enable(@cmd, @resp);

  { Configure USB interrupt }

  USBIP0_bit := 1;
  USBIP1_bit := 1;
  USBIP2_bit := 1;
  EnableInterrupts();

  { Main event loop }

  WHILE True DO
    BEGIN

      { Check for message from host }

      IF (HID_Read() <> 0) THEN
        BEGIN
          IF strncmp(cmd, 'LEDON', 5) = 0 THEN
            BEGIN
              LD1 := True;
              LD2 := True;
            END;

          IF strncmp(cmd, 'LEDOFF', 6) = 0 THEN
            BEGIN
              LD1 := False;
              LD2 := False;
            END;
        END;
    END;
END.