\r
#include "CDC.h"\r
\r
-/* Scheduler Task List */\r
-TASK_LIST\r
-{\r
- { .Task = USB_USBTask , .TaskStatus = TASK_STOP },\r
- { .Task = CDC_Task , .TaskStatus = TASK_STOP },\r
-};\r
-\r
/* Globals: */\r
/** Contains the current baud rate and other settings of the virtual serial port. While this demo does not use\r
* the physical USART and thus does not use these settings, they must still be retained and returned to the host\r
.ParityType = Parity_None,\r
.DataBits = 8 };\r
\r
-/** String to print through the virtual serial port when the joystick is pressed upwards. */\r
-char JoystickUpString[] = "Joystick Up\r\n";\r
+#if 0\r
+/* NOTE: Here you can set up a standard stream using the created virtual serial port, so that the standard stream functions in\r
+ * <stdio.h> can be used on the virtual serial port (e.g. fprintf(&USBSerial, "Test"); to print a string).\r
+ */\r
+ \r
+static int CDC_putchar (char c, FILE *stream)\r
+{ \r
+ Endpoint_SelectEndpoint(CDC_TX_EPNUM);\r
\r
-/** String to print through the virtual serial port when the joystick is pressed downward. */\r
-char JoystickDownString[] = "Joystick Down\r\n";\r
+ while (!(Endpoint_IsReadWriteAllowed()))\r
+ {\r
+ if (USB_DeviceState != DEVICE_STATE_Configured)\r
+ return -1;\r
+ }\r
\r
-/** String to print through the virtual serial port when the joystick is pressed left. */\r
-char JoystickLeftString[] = "Joystick Left\r\n";\r
+ Endpoint_Write_Byte(c);\r
+ Endpoint_ClearIN();\r
+ \r
+ return 0;\r
+}\r
\r
-/** String to print through the virtual serial port when the joystick is pressed right. */\r
-char JoystickRightString[] = "Joystick Right\r\n";\r
+static int CDC_getchar (FILE *stream)\r
+{\r
+ int c;\r
+ \r
+ Endpoint_SelectEndpoint(CDC_RX_EPNUM);\r
+ \r
+ for (;;)\r
+ {\r
+ while (!(Endpoint_IsReadWriteAllowed()))\r
+ {\r
+ if (USB_DeviceState != DEVICE_STATE_Configured)\r
+ return -1;\r
+ }\r
+ \r
+ if (!(Endpoint_BytesInEndpoint()))\r
+ {\r
+ Endpoint_ClearOUT();\r
+ }\r
+ else\r
+ {\r
+ c = Endpoint_Read_Byte();\r
+ break;\r
+ }\r
+ }\r
+ \r
+ return c;\r
+}\r
\r
-/** String to print through the virtual serial port when the joystick is pressed inwards. */\r
-char JoystickPressedString[] = "Joystick Pressed\r\n";\r
+static FILE USBSerial = FDEV_SETUP_STREAM(CDC_putchar, CDC_getchar, _FDEV_SETUP_RW);\r
+#endif\r
\r
-/** Main program entry point. This routine configures the hardware required by the application, then\r
- * starts the scheduler to run the application tasks.\r
+/** Main program entry point. This routine contains the overall program flow, including initial\r
+ * setup of all components and the main program loop.\r
*/\r
int main(void)\r
{\r
+ SetupHardware();\r
+ \r
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);\r
+\r
+ for (;;)\r
+ {\r
+ CDC_Task();\r
+ USB_USBTask();\r
+ }\r
+}\r
+\r
+/** Configures the board hardware and chip peripherals for the demo's functionality. */\r
+void SetupHardware(void)\r
+{\r
/* Disable watchdog if enabled by bootloader/fuses */\r
MCUSR &= ~(1 << WDRF);\r
wdt_disable();\r
/* Hardware Initialization */\r
Joystick_Init();\r
LEDs_Init();\r
- \r
- /* Indicate USB not ready */\r
- UpdateStatus(Status_USBNotReady);\r
- \r
- /* Initialize Scheduler so that it can be used */\r
- Scheduler_Init();\r
-\r
- /* Initialize USB Subsystem */\r
USB_Init();\r
-\r
- /* Scheduling - routine never returns, so put this last in the main function */\r
- Scheduler_Start();\r
}\r
\r
/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and\r
*/\r
void EVENT_USB_Connect(void)\r
{\r
- /* Start USB management task */\r
- Scheduler_SetTaskMode(USB_USBTask, TASK_RUN);\r
-\r
/* Indicate USB enumerating */\r
- UpdateStatus(Status_USBEnumerating);\r
+ LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);\r
}\r
\r
/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via\r
*/\r
void EVENT_USB_Disconnect(void)\r
{\r
- /* Stop running CDC and USB management tasks */\r
- Scheduler_SetTaskMode(CDC_Task, TASK_STOP);\r
- Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);\r
-\r
/* Indicate USB not ready */\r
- UpdateStatus(Status_USBNotReady);\r
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);\r
}\r
\r
/** Event handler for the USB_ConfigurationChanged event. This is fired when the host set the current configuration\r
*/\r
void EVENT_USB_ConfigurationChanged(void)\r
{\r
- /* Setup CDC Notification, Rx and Tx Endpoints */\r
- Endpoint_ConfigureEndpoint(CDC_NOTIFICATION_EPNUM, EP_TYPE_INTERRUPT,\r
- ENDPOINT_DIR_IN, CDC_NOTIFICATION_EPSIZE,\r
- ENDPOINT_BANK_SINGLE);\r
-\r
- Endpoint_ConfigureEndpoint(CDC_TX_EPNUM, EP_TYPE_BULK,\r
- ENDPOINT_DIR_IN, CDC_TXRX_EPSIZE,\r
- ENDPOINT_BANK_SINGLE);\r
-\r
- Endpoint_ConfigureEndpoint(CDC_RX_EPNUM, EP_TYPE_BULK,\r
- ENDPOINT_DIR_OUT, CDC_TXRX_EPSIZE,\r
- ENDPOINT_BANK_SINGLE);\r
-\r
/* Indicate USB connected and ready */\r
- UpdateStatus(Status_USBReady);\r
+ LEDs_SetAllLEDs(LEDMASK_USB_READY);\r
+\r
+ /* Setup CDC Notification, Rx and Tx Endpoints */\r
+ if (!(Endpoint_ConfigureEndpoint(CDC_NOTIFICATION_EPNUM, EP_TYPE_INTERRUPT,\r
+ ENDPOINT_DIR_IN, CDC_NOTIFICATION_EPSIZE,\r
+ ENDPOINT_BANK_SINGLE)))\r
+ {\r
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
+ }\r
+ \r
+ if (!(Endpoint_ConfigureEndpoint(CDC_TX_EPNUM, EP_TYPE_BULK,\r
+ ENDPOINT_DIR_IN, CDC_TXRX_EPSIZE,\r
+ ENDPOINT_BANK_SINGLE)))\r
+ {\r
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
+ }\r
\r
- /* Start CDC task */\r
- Scheduler_SetTaskMode(CDC_Task, TASK_RUN);\r
+ if (!(Endpoint_ConfigureEndpoint(CDC_RX_EPNUM, EP_TYPE_BULK,\r
+ ENDPOINT_DIR_OUT, CDC_TXRX_EPSIZE,\r
+ ENDPOINT_BANK_SINGLE)))\r
+ {\r
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
+ }\r
}\r
\r
/** Event handler for the USB_UnhandledControlPacket event. This is used to catch standard and class specific\r
CONTROL_LINE_OUT_* masks to determine the RTS and DTR line states using the following code:\r
*/\r
\r
- /* Acknowledge status stage */\r
- while (!(Endpoint_IsINReady()));\r
- Endpoint_ClearIN();\r
+ Endpoint_ClearStatusStage();\r
}\r
\r
break;\r
}\r
}\r
\r
-/** Function to manage status updates to the user. This is done via LEDs on the given board, if available, but may be changed to\r
- * log to a serial port, or anything else that is suitable for status updates.\r
- *\r
- * \param CurrentStatus Current status of the system, from the CDC_StatusCodes_t enum\r
- */\r
-void UpdateStatus(uint8_t CurrentStatus)\r
-{\r
- uint8_t LEDMask = LEDS_NO_LEDS;\r
- \r
- /* Set the LED mask to the appropriate LED mask based on the given status code */\r
- switch (CurrentStatus)\r
- {\r
- case Status_USBNotReady:\r
- LEDMask = (LEDS_LED1);\r
- break;\r
- case Status_USBEnumerating:\r
- LEDMask = (LEDS_LED1 | LEDS_LED2);\r
- break;\r
- case Status_USBReady:\r
- LEDMask = (LEDS_LED2 | LEDS_LED4);\r
- break;\r
- }\r
- \r
- /* Set the board LEDs to the new LED mask */\r
- LEDs_SetAllLEDs(LEDMask);\r
-}\r
-\r
/** Function to manage CDC data transmission and reception to and from the host. */\r
-TASK(CDC_Task)\r
+void CDC_Task(void)\r
{\r
char* ReportString = NULL;\r
uint8_t JoyStatus_LCL = Joystick_GetStatus();\r
static bool ActionSent = false;\r
+ char* JoystickStrings[] =\r
+ {\r
+ "Joystick Up\r\n",\r
+ "Joystick Down\r\n",\r
+ "Joystick Left\r\n",\r
+ "Joystick Right\r\n",\r
+ "Joystick Pressed\r\n",\r
+ };\r
\r
+ /* Device must be connected and configured for the task to run */\r
+ if (USB_DeviceState != DEVICE_STATE_Configured)\r
+ return;\r
+ \r
#if 0\r
/* NOTE: Here you can use the notification endpoint to send back line state changes to the host, for the special RS-232\r
- handshake signal lines (and some error states), via the CONTROL_LINE_IN_* masks and the following code:\r
- */\r
+ * handshake signal lines (and some error states), via the CONTROL_LINE_IN_* masks and the following code:\r
+ */\r
USB_Notification_Header_t Notification = (USB_Notification_Header_t)\r
{\r
.NotificationType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),\r
\r
/* Determine if a joystick action has occurred */\r
if (JoyStatus_LCL & JOY_UP)\r
- ReportString = JoystickUpString;\r
+ ReportString = JoystickStrings[0];\r
else if (JoyStatus_LCL & JOY_DOWN)\r
- ReportString = JoystickDownString;\r
+ ReportString = JoystickStrings[1];\r
else if (JoyStatus_LCL & JOY_LEFT)\r
- ReportString = JoystickLeftString;\r
+ ReportString = JoystickStrings[2];\r
else if (JoyStatus_LCL & JOY_RIGHT)\r
- ReportString = JoystickRightString;\r
+ ReportString = JoystickStrings[3];\r
else if (JoyStatus_LCL & JOY_PRESS)\r
- ReportString = JoystickPressedString;\r
+ ReportString = JoystickStrings[4];\r
\r
/* Flag management - Only allow one string to be sent per action */\r
if (ReportString == NULL)\r
if (IsFull)\r
{\r
/* Wait until the endpoint is ready for another packet */\r
- while (!(Endpoint_IsINReady()));\r
+ while (!(Endpoint_IsINReady()))\r
+ {\r
+ if (USB_DeviceState == DEVICE_STATE_Unattached)\r
+ return;\r
+ }\r
\r
/* Send an empty packet to ensure that the host does not buffer data sent to it */\r
Endpoint_ClearIN();\r
projects / pub / USBasp.git / blobdiff