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#include <avr/eeprom.h>
#include "nessmd2usb.h"
#include "defines.h"
#include "bits.h"
#include "gamepad.h"
/** Buffer to hold the previously generated HID report, for comparison purposes inside the HID class driver. */
static uint8_t PrevJoystickHIDReportBuffer[sizeof(USB_JoystickReport_Data_t)];
/** LUFA HID Class driver interface configuration and state information. This structure is
* passed to all HID Class driver functions, so that multiple instances of the same class
* within a device can be differentiated from one another.
*/
USB_ClassInfo_HID_Device_t Joystick_HID_Interface =
{
.Config =
{
.InterfaceNumber = INTERFACE_ID_Joystick,
.ReportINEndpoint =
{
.Address = JOYSTICK_EPADDR,
.Size = JOYSTICK_EPSIZE,
.Banks = 1,
},
.PrevReportINBuffer = PrevJoystickHIDReportBuffer,
.PrevReportINBufferSize = sizeof(PrevJoystickHIDReportBuffer),
},
};
/** Main program entry point. This routine contains the overall program flow, including initial
* setup of all components and the main program loop.
*/
volatile uint8_t current_report = 0;
volatile uint8_t buttons[4];
volatile int x[4];
volatile int y[4];
int main(void)
{
LEDS_INIT;
RED_OFF;
GREEN_OFF;
SetupHardware();
GlobalInterruptEnable();
int c;
for (;;)
{
uint32_t smd_gamepad_data = get_smd_gamepad_decoded();
uint16_t nes_gamepad_data = get_nes_gamepad_decoded();
buttons[0] = smd_gamepad_data & 0xFF;
buttons[1] = (smd_gamepad_data>>16) & 0xFF;
buttons[2] = nes_gamepad_data&0x0F;
buttons[3] = (nes_gamepad_data>>8)&0x0F;
for (c = 0; c < 4; c++)
{
uint8_t dpad = 0;
switch (c)
{
case 0:
dpad = (smd_gamepad_data>>8) & 0xF;
break;
case 1:
dpad = (smd_gamepad_data>>24) & 0xF;
break;
case 2:
dpad = (nes_gamepad_data>>4) & 0xF;
break;
case 3:
dpad = (nes_gamepad_data>>12) & 0xF;
break;
}
if (dpad&1) y[c] = -100;
else if (dpad&2) y[c] = 100;
else y[c] = 0;
if (dpad&4) x[c] = -100;
else if (dpad&8) x[c] = 100;
else x[c] = 0;
}
if (smd_gamepad_data || nes_gamepad_data)
{
GREEN_ON;
} else {
GREEN_OFF;
}
for (c = 0; c < 1000; c++)
{
_delay_us(1);
HID_Device_USBTask(&Joystick_HID_Interface);
USB_USBTask();
}
}
}
/** Configures the board hardware and chip peripherals for the demo's functionality. */
void SetupHardware(void)
{
#if (ARCH == ARCH_AVR8)
/* Disable watchdog if enabled by bootloader/fuses */
MCUSR &= ~(1 << WDRF);
wdt_disable();
/* Disable clock division */
clock_prescale_set(clock_div_1);
#elif (ARCH == ARCH_XMEGA)
/* Start the PLL to multiply the 2MHz RC oscillator to 32MHz and switch the CPU core to run from it */
XMEGACLK_StartPLL(CLOCK_SRC_INT_RC2MHZ, 2000000, F_CPU);
XMEGACLK_SetCPUClockSource(CLOCK_SRC_PLL);
/* Start the 32MHz internal RC oscillator and start the DFLL to increase it to 48MHz using the USB SOF as a reference */
XMEGACLK_StartInternalOscillator(CLOCK_SRC_INT_RC32MHZ);
XMEGACLK_StartDFLL(CLOCK_SRC_INT_RC32MHZ, DFLL_REF_INT_USBSOF, F_USB);
PMIC.CTRL = PMIC_LOLVLEN_bm | PMIC_MEDLVLEN_bm | PMIC_HILVLEN_bm;
#endif
/* Hardware Initialization */
USB_Init();
init_smd_gamepad();
init_nes_gamepad();
}
/** Event handler for the library USB Connection event. */
void EVENT_USB_Device_Connect(void)
{
}
/** Event handler for the library USB Disconnection event. */
void EVENT_USB_Device_Disconnect(void)
{
RED_OFF;
}
/** Event handler for the library USB Configuration Changed event. */
void EVENT_USB_Device_ConfigurationChanged(void)
{
bool ConfigSuccess = true;
ConfigSuccess &= HID_Device_ConfigureEndpoints(&Joystick_HID_Interface);
USB_Device_EnableSOFEvents();
RED_ON;
}
/** Event handler for the library USB Control Request reception event. */
void EVENT_USB_Device_ControlRequest(void)
{
HID_Device_ProcessControlRequest(&Joystick_HID_Interface);
}
/** Event handler for the USB device Start Of Frame event. */
void EVENT_USB_Device_StartOfFrame(void)
{
HID_Device_MillisecondElapsed(&Joystick_HID_Interface);
}
/** HID class driver callback function for the creation of HID reports to the host.
*
* \param[in] HIDInterfaceInfo Pointer to the HID class interface configuration structure being referenced
* \param[in,out] ReportID Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
* \param[in] ReportType Type of the report to create, either HID_REPORT_ITEM_In or HID_REPORT_ITEM_Feature
* \param[out] ReportData Pointer to a buffer where the created report should be stored
* \param[out] ReportSize Number of bytes written in the report (or zero if no report is to be sent)
*
* \return Boolean \c true to force the sending of the report, \c false to let the library determine if it needs to be sent
*/
bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
uint8_t* const ReportID,
const uint8_t ReportType,
void* ReportData,
uint16_t* const ReportSize)
{
USB_JoystickReport_Data_t* JoystickReport = (USB_JoystickReport_Data_t*)ReportData;
current_report = (current_report+1) % 4;
JoystickReport->X = x[current_report];
JoystickReport->Y = y[current_report];
JoystickReport->Button |= buttons[current_report];
*ReportID = current_report+1;
*ReportSize = sizeof(USB_JoystickReport_Data_t);
return true;
}
/** HID class driver callback function for the processing of HID reports from the host.
*
* \param[in] HIDInterfaceInfo Pointer to the HID class interface configuration structure being referenced
* \param[in] ReportID Report ID of the received report from the host
* \param[in] ReportType The type of report that the host has sent, either HID_REPORT_ITEM_Out or HID_REPORT_ITEM_Feature
* \param[in] ReportData Pointer to a buffer where the received report has been stored
* \param[in] ReportSize Size in bytes of the received HID report
*/
void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
const uint8_t ReportID,
const uint8_t ReportType,
const void* ReportData,
const uint16_t ReportSize)
{
// Unused (but mandatory for the HID class driver) in this demo, since there are no Host->Device reports
}
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