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Commit of new class abstraction APIs for all device demos other than the MIDI demo - not documented yet.

Browse source 
Removed scheduler and memory allocation libraries.

Added new EVENT_USB_StartOfFrame event in the library to indicate the start of each USB frame (when generated).

Removed Tx interrupt from the USBtoSerial demo; now sends characters via polling to ensure more time for the Rx interrupt.
This commit is contained in:
Dean Camera 2009-06-01 11:03:39 +00:00
parent 2440ca268a
commit d1e5266036
106 changed files with 3072 additions and 5760 deletions
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427
Demos/Device/Keyboard/Keyboard.c
View file

@ -28,397 +28,120 @@
arising out of or in connection with the use or performance of
this software.
*/
/** \file
*
* Main source file for the Keyboard demo. This file contains the main tasks of the demo and
* is responsible for the initial application hardware configuration.
*/
#include "Keyboard.h"
/* Scheduler Task List */
TASK_LIST
{
{ .Task = USB_USBTask , .TaskStatus = TASK_STOP },
{ .Task = USB_Keyboard_Report , .TaskStatus = TASK_STOP },
};
USB_ClassInfo_HID_t Keyboard_HID_Interface =
{
.InterfaceNumber = 0,
/* 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;
.ReportINEndpointNumber = KEYBOARD_EPNUM,
.ReportINEndpointSize = KEYBOARD_EPSIZE,
/** 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 presses a key).
*/
uint16_t IdleCount = 500;
.ReportOUTEndpointNumber = KEYBOARD_LEDS_EPNUM,
.ReportOUTEndpointSize = KEYBOARD_EPSIZE,
.ReportBufferSize = sizeof(USB_KeyboardReport_Data_t),
/** Current Idle period remaining. When the IdleCount value is set, this tracks the remaining number of idle
* milliseconds. This is separate 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;
.IdleCount = 500,
};
/** 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();
SetupHardware();
/* 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();
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
for (;;)
{
USB_HID_USBTask(&Keyboard_HID_Interface);
USB_USBTask();
}
}
void SetupHardware()
{
/* 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();
Buttons_Init();
USB_Init();
}
/** 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.
*/
void EVENT_USB_Connect(void)
{
/* Start USB management task */
Scheduler_SetTaskMode(USB_USBTask, TASK_RUN);
/* Indicate USB enumerating */
UpdateStatus(Status_USBEnumerating);
/* Default to report protocol on connect */
UsingReportProtocol = true;
LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
}
/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via
* the status LEDs.
*/
void EVENT_USB_Disconnect(void)
{
/* Stop running keyboard reporting and USB management tasks */
Scheduler_SetTaskMode(USB_Keyboard_Report, TASK_STOP);
Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);
/* Indicate USB not ready */
UpdateStatus(Status_USBNotReady);
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
}
/** 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.
*/
void EVENT_USB_ConfigurationChanged(void)
{
/* Setup Keyboard Keycode Report Endpoint */
Endpoint_ConfigureEndpoint(KEYBOARD_EPNUM, EP_TYPE_INTERRUPT,
ENDPOINT_DIR_IN, KEYBOARD_EPSIZE,
ENDPOINT_BANK_SINGLE);
LEDs_SetAllLEDs(LEDMASK_USB_READY);
/* Setup Keyboard LED Report Endpoint */
Endpoint_ConfigureEndpoint(KEYBOARD_LEDS_EPNUM, EP_TYPE_INTERRUPT,
ENDPOINT_DIR_OUT, KEYBOARD_EPSIZE,
ENDPOINT_BANK_SINGLE);
/* Indicate USB connected and ready */
UpdateStatus(Status_USBReady);
/* Start running keyboard reporting task */
Scheduler_SetTaskMode(USB_Keyboard_Report, TASK_RUN);
if (!(USB_HID_ConfigureEndpoints(&Keyboard_HID_Interface)))
LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
}
/** 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.
*/
void EVENT_USB_UnhandledControlPacket(void)
{
/* Handle HID Class specific requests */
switch (USB_ControlRequest.bRequest)
{
case REQ_GetReport:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
{
USB_KeyboardReport_Data_t KeyboardReportData;
Endpoint_ClearSETUP();
/* Create the next keyboard report for transmission to the host */
CreateKeyboardReport(&KeyboardReportData);
/* Write the report data to the control endpoint */
Endpoint_Write_Control_Stream_LE(&KeyboardReportData, sizeof(KeyboardReportData));
/* Finalize the stream transfer to send the last packet or clear the host abort */
Endpoint_ClearOUT();
}
break;
case REQ_SetReport:
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
/* Wait until the LED report has been sent by the host */
while (!(Endpoint_IsOUTReceived()));
/* Read in the LED report from the host */
uint8_t LEDStatus = Endpoint_Read_Byte();
/* Process the incoming LED report */
ProcessLEDReport(LEDStatus);
/* Clear the endpoint data */
Endpoint_ClearOUT();
/* Acknowledge status stage */
while (!(Endpoint_IsINReady()));
Endpoint_ClearIN();
}
break;
case REQ_GetProtocol:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
/* Write the current protocol flag to the host */
Endpoint_Write_Byte(UsingReportProtocol);
/* Send the flag to the host */
Endpoint_ClearIN();
/* Acknowledge status stage */
while (!(Endpoint_IsOUTReceived()));
Endpoint_ClearOUT();
}
break;
case REQ_SetProtocol:
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
/* Set or clear the flag depending on what the host indicates that the current Protocol should be */
UsingReportProtocol = (USB_ControlRequest.wValue != 0);
/* Acknowledge status stage */
while (!(Endpoint_IsINReady()));
Endpoint_ClearIN();
}
break;
case REQ_SetIdle:
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
/* Get idle period in MSB */
IdleCount = (USB_ControlRequest.wValue >> 8);
/* Acknowledge status stage */
while (!(Endpoint_IsINReady()));
Endpoint_ClearIN();
}
break;
case REQ_GetIdle:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
/* Write the current idle duration to the host */
Endpoint_Write_Byte(IdleCount);
/* Send the flag to the host */
Endpoint_ClearIN();
/* Acknowledge status stage */
while (!(Endpoint_IsOUTReceived()));
Endpoint_ClearOUT();
}
break;
}
USB_HID_ProcessControlPacket(&Keyboard_HID_Interface);
}
/** 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)
void EVENT_USB_StartOfFrame(void)
{
/* One millisecond has elapsed, decrement the idle time remaining counter if it has not already elapsed */
if (IdleMSRemaining)
IdleMSRemaining--;
USB_HID_RegisterStartOfFrame(&Keyboard_HID_Interface);
}
/** 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
*/
void CreateKeyboardReport(USB_KeyboardReport_Data_t* ReportData)
uint16_t CALLBACK_USB_HID_CreateNextHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData)
{
uint8_t JoyStatus_LCL = Joystick_GetStatus();
USB_KeyboardReport_Data_t* KeyboardReport = (USB_KeyboardReport_Data_t*)ReportData;
uint8_t JoyStatus_LCL = Joystick_GetStatus();
uint8_t ButtonStatus_LCL = Buttons_GetStatus();
/* Clear the report contents */
memset(ReportData, 0, sizeof(USB_KeyboardReport_Data_t));
if (JoyStatus_LCL & JOY_UP)
KeyboardReport->KeyCode[0] = 0x04; // A
else if (JoyStatus_LCL & JOY_DOWN)
KeyboardReport->KeyCode[0] = 0x05; // B
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)
KeyboardReport->KeyCode[0] = 0x06; // C
else if (JoyStatus_LCL & JOY_RIGHT)
KeyboardReport->KeyCode[0] = 0x07; // D
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
if (JoyStatus_LCL & JOY_PRESS)
KeyboardReport->KeyCode[0] = 0x08; // E
if (ButtonStatus_LCL & BUTTONS_BUTTON1)
KeyboardReport->KeyCode[0] = 0x09; // F
return sizeof(USB_KeyboardReport_Data_t);
}
/** Processes a received LED report, and updates the board LEDs states to match.
*
* \param LEDReport LED status report from the host
*/
void ProcessLEDReport(uint8_t LEDReport)
void CALLBACK_USB_HID_ProcessReceivedHIDReport(USB_ClassInfo_HID_t* HIDInterfaceInfo, void* ReportData, uint16_t ReportSize)
{
uint8_t LEDMask = LEDS_LED2;
if (LEDReport & 0x01) // NUM Lock
LEDMask |= LEDS_LED1;
if (LEDReport & 0x02) // CAPS Lock
LEDMask |= LEDS_LED3;
uint8_t LEDMask = LEDS_NO_LEDS;
uint8_t* LEDReport = (uint8_t*)ReportData;
if (LEDReport & 0x04) // SCROLL Lock
LEDMask |= LEDS_LED4;
if (*LEDReport & 0x01) // NUM Lock
LEDMask |= LEDS_LED1;
if (*LEDReport & 0x02) // CAPS Lock
LEDMask |= LEDS_LED3;
/* Set the status LEDs to the current Keyboard LED status */
LEDs_SetAllLEDs(LEDMask);
}
/** Sends the next HID report to the host, via the keyboard data endpoint. */
void SendNextReport(void)
{
static USB_KeyboardReport_Data_t PrevKeyboardReportData;
USB_KeyboardReport_Data_t KeyboardReportData;
bool SendReport = true;
/* Create the next keyboard report for transmission to the host */
CreateKeyboardReport(&KeyboardReportData);
/* Check to see if the report data has changed - if so a report MUST be sent */
SendReport = (memcmp(&PrevKeyboardReportData, &KeyboardReportData, sizeof(USB_KeyboardReport_Data_t)) != 0);
/* Save the current report data for later comparison to check for changes */
PrevKeyboardReportData = KeyboardReportData;
/* Check if the idle period is set and has elapsed */
if ((IdleCount != HID_IDLE_CHANGESONLY) && (!(IdleMSRemaining)))
{
/* Reset the idle time remaining counter, must multiply by 4 to get the duration in milliseconds */
IdleMSRemaining = (IdleCount << 2);
/* Idle period is set and has elapsed, must send a report to the host */
SendReport = true;
}
/* Select the Keyboard Report Endpoint */
Endpoint_SelectEndpoint(KEYBOARD_EPNUM);
/* Check if Keyboard Endpoint Ready for Read/Write and if we should send a new report */
if (Endpoint_IsReadWriteAllowed() && SendReport)
{
/* Write Keyboard Report Data */
Endpoint_Write_Stream_LE(&KeyboardReportData, sizeof(KeyboardReportData));
/* Finalize the stream transfer to send the last packet */
Endpoint_ClearIN();
}
}
/** Reads the next LED status report from the host from the LED data endpoint, if one has been sent. */
void ReceiveNextReport(void)
{
/* Select the Keyboard LED Report Endpoint */
Endpoint_SelectEndpoint(KEYBOARD_LEDS_EPNUM);
/* Check if Keyboard LED Endpoint contains a packet */
if (Endpoint_IsOUTReceived())
{
/* Check to see if the packet contains data */
if (Endpoint_IsReadWriteAllowed())
{
/* Read in the LED report from the host */
uint8_t LEDReport = Endpoint_Read_Byte();
/* Process the read LED report from the host */
ProcessLEDReport(LEDReport);
}
/* Handshake the OUT Endpoint - clear endpoint and ready for next report */
Endpoint_ClearOUT();
}
}
/** 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 Keyboard_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);
}
/** Function to manage HID report generation and transmission to the host, when in report mode. */
TASK(USB_Keyboard_Report)
{
/* Check if the USB system is connected to a host */
if (USB_IsConnected)
{
/* Send the next keypress report to the host */
SendNextReport();
/* Process the LED report sent from the host */
ReceiveNextReport();
}
if (*LEDReport & 0x04) // SCROLL Lock
LEDMask |= LEDS_LED4;
LEDs_SetAllLEDs(LEDMask);
}