[703832c] | 1 | /*
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| 2 | LUFA Library
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| 3 | Copyright (C) Dean Camera, 2021.
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| 4 |
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| 5 | dean [at] fourwalledcubicle [dot] com
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| 6 | www.lufa-lib.org
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| 7 | */
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| 8 |
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| 9 | /*
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| 10 | Copyright 2021 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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| 11 |
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| 12 | Permission to use, copy, modify, distribute, and sell this
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| 13 | software and its documentation for any purpose is hereby granted
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| 14 | without fee, provided that the above copyright notice appear in
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| 15 | all copies and that both that the copyright notice and this
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| 16 | permission notice and warranty disclaimer appear in supporting
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| 17 | documentation, and that the name of the author not be used in
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| 18 | advertising or publicity pertaining to distribution of the
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| 19 | software without specific, written prior permission.
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| 20 |
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| 21 | The author disclaims all warranties with regard to this
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| 22 | software, including all implied warranties of merchantability
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| 23 | and fitness. In no event shall the author be liable for any
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| 24 | special, indirect or consequential damages or any damages
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| 25 | whatsoever resulting from loss of use, data or profits, whether
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| 26 | in an action of contract, negligence or other tortious action,
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| 27 | arising out of or in connection with the use or performance of
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| 28 | this software.
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| 29 | */
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| 30 |
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| 31 | /** \file
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| 32 | *
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| 33 | * Main source file for the Joystick demo. This file contains the main tasks of
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| 34 | * the demo and is responsible for the initial application hardware configuration.
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| 35 | */
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| 36 |
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| 37 | #include "Joystick.h"
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| 38 |
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| 39 | extern void GrIP_Init();
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| 40 | extern uint8_t GrIP_Read(uint32_t*, uint8_t);
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| 41 |
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| 42 | /** Buffer to hold the previously generated HID report, for comparison purposes inside the HID class driver. */
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| 43 | static uint8_t PrevJoystickHIDReportBuffer[4];
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| 44 |
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| 45 | /** LUFA HID Class driver interface configuration and state information. This structure is
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| 46 | * passed to all HID Class driver functions, so that multiple instances of the same class
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| 47 | * within a device can be differentiated from one another.
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| 48 | */
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| 49 | USB_ClassInfo_HID_Device_t Joystick_HID_Interface =
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| 50 | {
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| 51 | .Config =
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| 52 | {
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| 53 | .InterfaceNumber = INTERFACE_ID_Joystick,
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| 54 | .ReportINEndpoint =
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| 55 | {
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| 56 | .Address = JOYSTICK_EPADDR,
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| 57 | .Size = JOYSTICK_EPSIZE,
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| 58 | .Banks = 1,
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| 59 | },
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| 60 | .PrevReportINBuffer = PrevJoystickHIDReportBuffer,
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| 61 | .PrevReportINBufferSize = sizeof(PrevJoystickHIDReportBuffer),
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| 62 | },
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| 63 | };
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| 64 |
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| 65 |
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| 66 | /** Main program entry point. This routine contains the overall program flow, including initial
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| 67 | * setup of all components and the main program loop.
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| 68 | */
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| 69 | int main(void)
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| 70 | {
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| 71 | SetupHardware();
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| 72 |
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| 73 | LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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| 74 | GlobalInterruptEnable();
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| 75 |
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| 76 | for (;;)
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| 77 | {
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| 78 | HID_Device_USBTask(&Joystick_HID_Interface);
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| 79 | USB_USBTask();
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| 80 | }
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| 81 | }
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| 82 |
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| 83 | /** Configures the board hardware and chip peripherals for the demo's functionality. */
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| 84 | void SetupHardware(void)
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| 85 | {
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| 86 | #if (ARCH == ARCH_AVR8)
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| 87 | /* Disable watchdog if enabled by bootloader/fuses */
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| 88 | MCUSR &= ~(1 << WDRF);
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| 89 | wdt_disable();
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| 90 |
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| 91 | /* Disable clock division */
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| 92 | clock_prescale_set(clock_div_1);
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| 93 | #elif (ARCH == ARCH_XMEGA)
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| 94 | /* Start the PLL to multiply the 2MHz RC oscillator to 32MHz and switch the CPU core to run from it */
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| 95 | XMEGACLK_StartPLL(CLOCK_SRC_INT_RC2MHZ, 2000000, F_CPU);
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| 96 | XMEGACLK_SetCPUClockSource(CLOCK_SRC_PLL);
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| 97 |
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| 98 | /* Start the 32MHz internal RC oscillator and start the DFLL to increase it to 48MHz using the USB SOF as a reference */
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| 99 | XMEGACLK_StartInternalOscillator(CLOCK_SRC_INT_RC32MHZ);
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| 100 | XMEGACLK_StartDFLL(CLOCK_SRC_INT_RC32MHZ, DFLL_REF_INT_USBSOF, F_USB);
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| 101 |
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| 102 | PMIC.CTRL = PMIC_LOLVLEN_bm | PMIC_MEDLVLEN_bm | PMIC_HILVLEN_bm;
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| 103 | #endif
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| 104 |
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| 105 | /* Hardware Initialization */
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| 106 | GrIP_Init();
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| 107 | LEDs_Init();
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| 108 | Buttons_Init();
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| 109 | USB_Init();
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| 110 | }
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| 111 |
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| 112 | /** Event handler for the library USB Connection event. */
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| 113 | void EVENT_USB_Device_Connect(void)
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| 114 | {
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| 115 | LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
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| 116 | }
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| 117 |
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| 118 | /** Event handler for the library USB Disconnection event. */
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| 119 | void EVENT_USB_Device_Disconnect(void)
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| 120 | {
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| 121 | LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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| 122 | }
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| 123 |
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| 124 | /** Event handler for the library USB Configuration Changed event. */
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| 125 | void EVENT_USB_Device_ConfigurationChanged(void)
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| 126 | {
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| 127 | bool ConfigSuccess = true;
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| 128 |
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| 129 | ConfigSuccess &= HID_Device_ConfigureEndpoints(&Joystick_HID_Interface);
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| 130 |
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| 131 | USB_Device_EnableSOFEvents();
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| 132 |
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| 133 | LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
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| 134 | }
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| 135 |
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| 136 | /** Event handler for the library USB Control Request reception event. */
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| 137 | void EVENT_USB_Device_ControlRequest(void)
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| 138 | {
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| 139 | HID_Device_ProcessControlRequest(&Joystick_HID_Interface);
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| 140 | }
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| 141 |
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| 142 | /** Event handler for the USB device Start Of Frame event. */
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| 143 | void EVENT_USB_Device_StartOfFrame(void)
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| 144 | {
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| 145 | HID_Device_MillisecondElapsed(&Joystick_HID_Interface);
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| 146 | }
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| 147 |
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| 148 | /** HID class driver callback function for the creation of HID reports to the host.
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| 149 | *
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| 150 | * \param[in] HIDInterfaceInfo Pointer to the HID class interface configuration structure being referenced
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| 151 | * \param[in,out] ReportID Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
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| 152 | * \param[in] ReportType Type of the report to create, either HID_REPORT_ITEM_In or HID_REPORT_ITEM_Feature
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| 153 | * \param[out] ReportData Pointer to a buffer where the created report should be stored
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| 154 | * \param[out] ReportSize Number of bytes written in the report (or zero if no report is to be sent)
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| 155 | *
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| 156 | * \return Boolean \c true to force the sending of the report, \c false to let the library determine if it needs to be sent
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| 157 | */
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| 158 | bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
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| 159 | uint8_t* const ReportID,
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| 160 | const uint8_t ReportType,
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| 161 | void* ReportData,
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| 162 | uint16_t* const ReportSize)
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| 163 | {
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| 164 | *ReportID = GrIP_Read(ReportData, *ReportID) + 1;
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| 165 |
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| 166 | // Flip the up/down axis in the right direction for USB reports
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| 167 | uint8_t* data = (uint8_t*)ReportData;
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| 168 | uint8_t up = data[3] & 0x08;
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| 169 | uint8_t down = data[3] & 0x10;
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| 170 | data[3] ^= up | down;
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| 171 | data[3] ^= (up << 1) | (down >> 1);
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| 172 |
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| 173 | *ReportSize = 4;
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| 174 | return true;
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| 175 | }
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| 176 |
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| 177 | /** HID class driver callback function for the processing of HID reports from the host.
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| 178 | *
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| 179 | * \param[in] HIDInterfaceInfo Pointer to the HID class interface configuration structure being referenced
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| 180 | * \param[in] ReportID Report ID of the received report from the host
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| 181 | * \param[in] ReportType The type of report that the host has sent, either HID_REPORT_ITEM_Out or HID_REPORT_ITEM_Feature
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| 182 | * \param[in] ReportData Pointer to a buffer where the received report has been stored
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| 183 | * \param[in] ReportSize Size in bytes of the received HID report
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| 184 | */
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| 185 | void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
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| 186 | const uint8_t ReportID,
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| 187 | const uint8_t ReportType,
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| 188 | const void* ReportData,
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| 189 | const uint16_t ReportSize)
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| 190 | {
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| 191 | // Unused (but mandatory for the HID class driver) in this demo, since there are no Host->Device reports
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| 192 | }
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| 193 |
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