diff options
Diffstat (limited to 'Demos/KeyboardViaInt/KeyboardViaInt.c')
| -rw-r--r-- | Demos/KeyboardViaInt/KeyboardViaInt.c | 461 |
1 files changed, 0 insertions, 461 deletions
diff --git a/Demos/KeyboardViaInt/KeyboardViaInt.c b/Demos/KeyboardViaInt/KeyboardViaInt.c deleted file mode 100644 index 1e724e6fa..000000000 --- a/Demos/KeyboardViaInt/KeyboardViaInt.c +++ /dev/null @@ -1,461 +0,0 @@ -/*
- LUFA Library
- Copyright (C) Dean Camera, 2009.
-
- dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
-*/
-
-/*
- Copyright 2009 Denver Gingerich (denver [at] ossguy [dot] com)
- Based on code by Dean Camera (dean [at] fourwalledcubicle [dot] com)
-
- Permission to use, copy, modify, and distribute this software
- and its documentation for any purpose and without fee is hereby
- granted, provided that the above copyright notice appear in all
- copies and that both that the copyright notice and this
- permission notice and warranty disclaimer appear in supporting
- documentation, and that the name of the author not be used in
- advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- The author disclaim all warranties with regard to this
- software, including all implied warranties of merchantability
- and fitness. In no event shall the author be liable for any
- special, indirect or consequential damages or any damages
- whatsoever resulting from loss of use, data or profits, whether
- in an action of contract, negligence or other tortious action,
- arising out of or in connection with the use or performance of
- this software.
-*/
-
-/** \file
- *
- * Main source file for the KeyboardViaInt demo. This file contains the main tasks of the demo and
- * is responsible for the initial application hardware configuration.
- */
-
-#include "KeyboardViaInt.h"
-
-/* Project Tags, for reading out using the ButtLoad project */
-BUTTLOADTAG(ProjName, "LUFA KeyboardI App");
-BUTTLOADTAG(BuildTime, __TIME__);
-BUTTLOADTAG(BuildDate, __DATE__);
-BUTTLOADTAG(LUFAVersion, "LUFA V" LUFA_VERSION_STRING);
-
-/* Scheduler Task List */
-TASK_LIST
-{
- { Task: USB_USBTask , TaskStatus: TASK_STOP },
-};
-
-/* Global Variables */
-/** Indicates what report mode the host has requested, true for normal HID reporting mode, false for special boot
- * protocol reporting mode.
- */
-bool UsingReportProtocol = true;
-
-/** Current Idle period. This is set by the host via a Set Idle HID class request to silence the device's reports
- * for either the entire idle duration, or until the report status changes (e.g. the user moves the mouse).
- */
-uint8_t IdleCount = 0;
-
-/** Current Idle period remaining. When the IdleCount value is set, this tracks the remaining number of idle
- * milliseconds. This is seperate to the IdleCount timer and is incremented and compared as the host may request
- * the current idle period via a Get Idle HID class request, thus its value must be preserved.
- */
-uint16_t IdleMSRemaining = 0;
-
-
-/** Main program entry point. This routine configures the hardware required by the application, then
- * starts the scheduler to run the USB management task.
- */
-int main(void)
-{
- /* Disable watchdog if enabled by bootloader/fuses */
- MCUSR &= ~(1 << WDRF);
- wdt_disable();
-
- /* Disable clock division */
- clock_prescale_set(clock_div_1);
-
- /* Hardware Initialization */
- Joystick_Init();
- LEDs_Init();
-
- /* Millisecond timer initialization, with output compare interrupt enabled for the idle timing */
- OCR0A = 0x7D;
- TCCR0A = (1 << WGM01);
- TCCR0B = ((1 << CS01) | (1 << CS00));
- TIMSK0 = (1 << OCIE0A);
-
- /* Indicate USB not ready */
- UpdateStatus(Status_USBNotReady);
-
- /* Initialize Scheduler so that it can be used */
- Scheduler_Init();
-
- /* Initialize USB Subsystem */
- USB_Init();
-
- /* Scheduling - routine never returns, so put this last in the main function */
- Scheduler_Start();
-}
-
-/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and
- * starts the library USB task to begin the enumeration and USB management process.
- */
-EVENT_HANDLER(USB_Connect)
-{
- /* Start USB management task */
- Scheduler_SetTaskMode(USB_USBTask, TASK_RUN);
-
- /* Indicate USB enumerating */
- UpdateStatus(Status_USBEnumerating);
-
- /* Default to report protocol on connect */
- UsingReportProtocol = true;
-}
-
-/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via
- * the status LEDs and stops the USB management task.
- */
-EVENT_HANDLER(USB_Disconnect)
-{
- /* Stop running keyboard reporting and USB management tasks */
- Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);
-
- /* Indicate USB not ready */
- UpdateStatus(Status_USBNotReady);
-}
-
-/** Event handler for the USB_ConfigurationChanged event. This is fired when the host sets the current configuration
- * of the USB device after enumeration, and configures the keyboard device endpoints.
- */
-EVENT_HANDLER(USB_ConfigurationChanged)
-{
- /* Setup Keyboard Keycode Report Endpoint */
- Endpoint_ConfigureEndpoint(KEYBOARD_EPNUM, EP_TYPE_INTERRUPT,
- ENDPOINT_DIR_IN, KEYBOARD_EPSIZE,
- ENDPOINT_BANK_SINGLE);
-
- /* Enable the endpoint IN interrupt ISR for the report endpoint */
- USB_INT_Enable(ENDPOINT_INT_IN);
-
- /* Setup Keyboard LED Report Endpoint */
- Endpoint_ConfigureEndpoint(KEYBOARD_LEDS_EPNUM, EP_TYPE_INTERRUPT,
- ENDPOINT_DIR_OUT, KEYBOARD_EPSIZE,
- ENDPOINT_BANK_SINGLE);
-
- /* Enable the endpoint OUT interrupt ISR for the LED report endpoint */
- USB_INT_Enable(ENDPOINT_INT_OUT);
-
- /* Indicate USB connected and ready */
- UpdateStatus(Status_USBReady);
-}
-
-/** Event handler for the USB_UnhandledControlPacket event. This is used to catch standard and class specific
- * control requests that are not handled internally by the USB library (including the HID commands, which are
- * all issued via the control endpoint), so that they can be handled appropriately for the application.
- */
-EVENT_HANDLER(USB_UnhandledControlPacket)
-{
- /* Handle HID Class specific requests */
- switch (bRequest)
- {
- case REQ_GetReport:
- if (bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
- {
- USB_KeyboardReport_Data_t KeyboardReportData;
-
- /* Create the next keyboard report for transmission to the host */
- GetNextReport(&KeyboardReportData);
-
- /* Ignore report type and ID number value */
- Endpoint_Discard_Word();
-
- /* Ignore unused Interface number value */
- Endpoint_Discard_Word();
-
- /* Read in the number of bytes in the report to send to the host */
- uint16_t wLength = Endpoint_Read_Word_LE();
-
- /* If trying to send more bytes than exist to the host, clamp the value at the report size */
- if (wLength > sizeof(KeyboardReportData))
- wLength = sizeof(KeyboardReportData);
-
- Endpoint_ClearSetupReceived();
-
- /* Write the report data to the control endpoint */
- Endpoint_Write_Control_Stream_LE(&KeyboardReportData, wLength);
-
- /* Finalize the stream transfer to send the last packet or clear the host abort */
- Endpoint_ClearSetupOUT();
- }
-
- break;
- case REQ_SetReport:
- if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
- {
- Endpoint_ClearSetupReceived();
-
- /* Wait until the LED report has been sent by the host */
- while (!(Endpoint_IsSetupOUTReceived()));
-
- /* Read in the LED report from the host */
- uint8_t LEDStatus = Endpoint_Read_Byte();
-
- /* Process the incomming LED report */
- ProcessLEDReport(LEDStatus);
-
- /* Clear the endpoint data */
- Endpoint_ClearSetupOUT();
-
- /* Acknowledge status stage */
- while (!(Endpoint_IsSetupINReady()));
- Endpoint_ClearSetupIN();
- }
-
- break;
- case REQ_GetProtocol:
- if (bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
- {
- Endpoint_ClearSetupReceived();
-
- /* Write the current protocol flag to the host */
- Endpoint_Write_Byte(UsingReportProtocol);
-
- /* Send the flag to the host */
- Endpoint_ClearSetupIN();
-
- /* Acknowledge status stage */
- while (!(Endpoint_IsSetupOUTReceived()));
- Endpoint_ClearSetupOUT();
- }
-
- break;
- case REQ_SetProtocol:
- if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
- {
- /* Read in the wValue parameter containing the new protocol mode */
- uint16_t wValue = Endpoint_Read_Word_LE();
-
- Endpoint_ClearSetupReceived();
-
- /* Set or clear the flag depending on what the host indicates that the current Protocol should be */
- UsingReportProtocol = (wValue != 0x0000);
-
- /* Acknowledge status stage */
- while (!(Endpoint_IsSetupINReady()));
- Endpoint_ClearSetupIN();
- }
-
- break;
- case REQ_SetIdle:
- if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
- {
- /* Read in the wValue parameter containing the idle period */
- uint16_t wValue = Endpoint_Read_Word_LE();
-
- Endpoint_ClearSetupReceived();
-
- /* Get idle period in MSB */
- IdleCount = (wValue >> 8);
-
- /* Acknowledge status stage */
- while (!(Endpoint_IsSetupINReady()));
- Endpoint_ClearSetupIN();
- }
-
- break;
- case REQ_GetIdle:
- if (bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
- {
- Endpoint_ClearSetupReceived();
-
- /* Write the current idle duration to the host */
- Endpoint_Write_Byte(IdleCount);
-
- /* Send the flag to the host */
- Endpoint_ClearSetupIN();
-
- /* Acknowledge status stage */
- while (!(Endpoint_IsSetupOUTReceived()));
- Endpoint_ClearSetupOUT();
- }
-
- break;
- }
-}
-
-/** ISR for the timer 0 compare vector. This ISR fires once each millisecond, and increments the
- * scheduler elapsed idle period counter when the host has set an idle period.
- */
-ISR(TIMER0_COMPA_vect, ISR_BLOCK)
-{
- /* One millisecond has elapsed, decrement the idle time remaining counter if it has not already elapsed */
- if (IdleMSRemaining)
- IdleMSRemaining--;
-}
-
-/** Fills the given HID report data structure with the next HID report to send to the host.
- *
- * \param ReportData Pointer to a HID report data structure to be filled
- *
- * \return Boolean true if the new report differs from the last report, false otherwise
- */
-bool GetNextReport(USB_KeyboardReport_Data_t* ReportData)
-{
- static uint8_t PrevJoyStatus = 0;
- uint8_t JoyStatus_LCL = Joystick_GetStatus();
- bool InputChanged = false;
-
- /* Clear the report contents */
- memset(ReportData, 0, sizeof(USB_KeyboardReport_Data_t));
-
- if (JoyStatus_LCL & JOY_UP)
- ReportData->KeyCode[0] = 0x04; // A
- else if (JoyStatus_LCL & JOY_DOWN)
- ReportData->KeyCode[0] = 0x05; // B
-
- if (JoyStatus_LCL & JOY_LEFT)
- ReportData->KeyCode[0] = 0x06; // C
- else if (JoyStatus_LCL & JOY_RIGHT)
- ReportData->KeyCode[0] = 0x07; // D
-
- if (JoyStatus_LCL & JOY_PRESS)
- ReportData->KeyCode[0] = 0x08; // E
-
- /* Check if the new report is different to the previous report */
- InputChanged = (uint8_t)(PrevJoyStatus ^ JoyStatus_LCL);
-
- /* Save the current joystick status for later comparison */
- PrevJoyStatus = JoyStatus_LCL;
-
- /* Return whether the new report is different to the previous report or not */
- return InputChanged;
-}
-
-/** Processes a given LED report mask from the host and sets the board LEDs to match.
- *
- * \param LEDReport LED mask from the host, containing a mask of what LEDs are set
- */
-void ProcessLEDReport(uint8_t LEDReport)
-{
- uint8_t LEDMask = LEDS_LED2;
-
- if (LEDReport & 0x01) // NUM Lock
- LEDMask |= LEDS_LED1;
-
- if (LEDReport & 0x02) // CAPS Lock
- LEDMask |= LEDS_LED3;
-
- if (LEDReport & 0x04) // SCROLL Lock
- LEDMask |= LEDS_LED4;
-
- /* Set the status LEDs to the current Keyboard LED status */
- LEDs_SetAllLEDs(LEDMask);
-}
-
-/** Function to manage status updates to the user. This is done via LEDs on the given board, if available, but may be changed to
- * log to a serial port, or anything else that is suitable for status updates.
- *
- * \param CurrentStatus Current status of the system, from the KeyboardViaInt_StatusCodes_t enum
- */
-void UpdateStatus(uint8_t CurrentStatus)
-{
- uint8_t LEDMask = LEDS_NO_LEDS;
-
- /* Set the LED mask to the appropriate LED mask based on the given status code */
- switch (CurrentStatus)
- {
- case Status_USBNotReady:
- LEDMask = (LEDS_LED1);
- break;
- case Status_USBEnumerating:
- LEDMask = (LEDS_LED1 | LEDS_LED2);
- break;
- case Status_USBReady:
- LEDMask = (LEDS_LED2 | LEDS_LED4);
- break;
- }
-
- /* Set the board LEDs to the new LED mask */
- LEDs_SetAllLEDs(LEDMask);
-}
-
-/** ISR for the general Pipe/Endpoint interrupt vector. This ISR fires when an endpoint's status changes (such as
- * a packet has been received) on an endpoint with its corresponding ISR enabling bits set. This is used to send
- * HID packets to the host each time the HID interrupt endpoints polling period elapses, as managed by the USB
- * controller.
- */
-ISR(ENDPOINT_PIPE_vect, ISR_BLOCK)
-{
- /* Save previously selected endpoint before selecting a new endpoint */
- uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();
-
- /* Check if keyboard endpoint has interrupted */
- if (Endpoint_HasEndpointInterrupted(KEYBOARD_EPNUM))
- {
- USB_KeyboardReport_Data_t KeyboardReportData;
- bool SendReport;
-
- /* Select the Keyboard Report Endpoint */
- Endpoint_SelectEndpoint(KEYBOARD_EPNUM);
-
- /* Clear the endpoint IN interrupt flag */
- USB_INT_Clear(ENDPOINT_INT_IN);
-
- /* Clear the Keyboard Report endpoint interrupt */
- Endpoint_ClearEndpointInterrupt(KEYBOARD_EPNUM);
-
- /* Create the next keyboard report for transmission to the host */
- SendReport = GetNextReport(&KeyboardReportData);
-
- /* Check if the idle period is set and has elapsed */
- if (IdleCount && !(IdleMSRemaining))
- {
- /* Idle period elapsed, indicate that a report must be sent */
- SendReport = true;
-
- /* Reset the idle time remaining counter, must multiply by 4 to get the duration in milliseconds */
- IdleMSRemaining = (IdleCount << 2);
- }
-
- /* Check to see if a report should be issued */
- if (SendReport)
- {
- /* Write Keyboard Report Data */
- Endpoint_Write_Stream_LE(&KeyboardReportData, sizeof(KeyboardReportData));
- }
-
- /* Finalize the stream transfer to send the last packet */
- Endpoint_ClearCurrentBank();
- }
-
- /* Check if Keyboard LED status Endpoint has interrupted */
- if (Endpoint_HasEndpointInterrupted(KEYBOARD_LEDS_EPNUM))
- {
- /* Select the Keyboard LED Report Endpoint */
- Endpoint_SelectEndpoint(KEYBOARD_LEDS_EPNUM);
-
- /* Clear the endpoint OUT interrupt flag */
- USB_INT_Clear(ENDPOINT_INT_OUT);
-
- /* Clear the Keyboard LED Report endpoint interrupt */
- Endpoint_ClearEndpointInterrupt(KEYBOARD_LEDS_EPNUM);
-
- /* Read in the LED report from the host */
- uint8_t LEDStatus = Endpoint_Read_Byte();
-
- /* Process the incomming LED report */
- ProcessLEDReport(LEDStatus);
-
- /* Handshake the OUT Endpoint - clear endpoint and ready for next report */
- Endpoint_ClearCurrentBank();
- }
-
- /* Restore previously selected endpoint */
- Endpoint_SelectEndpoint(PrevSelectedEndpoint);
-}
-
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