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@ -36,13 +36,6 @@
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#include "MassStorageHost.h"
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/* Scheduler Task List */
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TASK_LIST
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{
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{ .Task = USB_USBTask , .TaskStatus = TASK_STOP },
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{ .Task = USB_MassStore_Host , .TaskStatus = TASK_STOP },
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};
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/* Globals */
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/** Index of the highest available LUN (Logical Unit) in the attached Mass Storage Device */
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uint8_t MassStore_MaxLUNIndex;
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@ -52,6 +45,23 @@ uint8_t MassStore_MaxLUNIndex;
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* starts the scheduler to run the application tasks.
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*/
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int main(void)
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{
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SetupHardware();
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puts_P(PSTR(ESC_RESET ESC_BG_WHITE ESC_INVERSE_ON ESC_ERASE_DISPLAY
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"Mass Storage Host Demo running.\r\n" ESC_INVERSE_OFF));
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LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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for (;;)
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{
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MassStorage_Task();
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USB_USBTask();
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}
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}
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/** Configures the board hardware and chip peripherals for the demo's functionality. */
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void SetupHardware(void)
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{
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/* Disable watchdog if enabled by bootloader/fuses */
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MCUSR &= ~(1 << WDRF);
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@ -64,22 +74,6 @@ int main(void)
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SerialStream_Init(9600, false);
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LEDs_Init();
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Buttons_Init();
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/* Indicate USB not ready */
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UpdateStatus(Status_USBNotReady);
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/* Start-up message */
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puts_P(PSTR(ESC_RESET ESC_BG_WHITE ESC_INVERSE_ON ESC_ERASE_DISPLAY
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"MassStore Host Demo running.\r\n" ESC_INVERSE_OFF));
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/* Initialize Scheduler so that it can be used */
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Scheduler_Init();
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/* Initialize USB Subsystem */
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USB_Init();
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/* Scheduling routine never returns, so put this last in the main function */
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Scheduler_Start();
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}
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/** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
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@ -88,10 +82,7 @@ int main(void)
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void EVENT_USB_DeviceAttached(void)
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{
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puts_P(PSTR("Device Attached.\r\n"));
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UpdateStatus(Status_USBEnumerating);
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/* Start USB management task to enumerate the device */
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Scheduler_SetTaskMode(USB_USBTask, TASK_RUN);
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LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
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}
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/** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
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@ -99,12 +90,8 @@ void EVENT_USB_DeviceAttached(void)
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*/
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void EVENT_USB_DeviceUnattached(void)
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{
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/* Stop USB management and Mass Storage tasks */
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Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);
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Scheduler_SetTaskMode(USB_MassStore_Host, TASK_STOP);
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puts_P(PSTR("\r\nDevice Unattached.\r\n"));
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UpdateStatus(Status_USBNotReady);
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LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
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}
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/** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
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@ -112,11 +99,7 @@ void EVENT_USB_DeviceUnattached(void)
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*/
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void EVENT_USB_DeviceEnumerationComplete(void)
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{
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/* Once device is fully enumerated, start the Mass Storage Host task */
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Scheduler_SetTaskMode(USB_MassStore_Host, TASK_RUN);
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/* Indicate device enumeration complete */
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UpdateStatus(Status_USBReady);
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LEDs_SetAllLEDs(LEDMASK_USB_READY);
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}
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/** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
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@ -127,7 +110,7 @@ void EVENT_USB_HostError(const uint8_t ErrorCode)
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puts_P(PSTR(ESC_BG_RED "Host Mode Error\r\n"));
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printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
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UpdateStatus(Status_HardwareError);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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for(;;);
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}
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@ -141,13 +124,13 @@ void EVENT_USB_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t Su
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printf_P(PSTR(" -- Sub Error Code %d\r\n"), SubErrorCode);
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printf_P(PSTR(" -- In State %d\r\n"), USB_HostState);
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UpdateStatus(Status_EnumerationError);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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}
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/** Task to set the configuration of the attached device after it has been enumerated, and to read in blocks from
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* the device and print them to the serial port.
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*/
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TASK(USB_MassStore_Host)
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void MassStorage_Task(void)
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{
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uint8_t ErrorCode;
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@ -174,7 +157,7 @@ TASK(USB_MassStore_Host)
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printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);
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/* Indicate error via status LEDs */
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UpdateStatus(Status_EnumerationError);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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/* Wait until USB device disconnected */
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while (USB_IsConnected);
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@ -197,7 +180,7 @@ TASK(USB_MassStore_Host)
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printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);
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/* Indicate error via status LEDs */
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UpdateStatus(Status_EnumerationError);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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/* Wait until USB device disconnected */
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while (USB_IsConnected);
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@ -210,7 +193,7 @@ TASK(USB_MassStore_Host)
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break;
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case HOST_STATE_Ready:
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/* Indicate device busy via the status LEDs */
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UpdateStatus(Status_Busy);
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LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
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/* Send the request, display error and wait for device detach if request fails */
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if ((ErrorCode = MassStore_GetMaxLUN(&MassStore_MaxLUNIndex)) != HOST_SENDCONTROL_Successful)
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@ -354,7 +337,7 @@ TASK(USB_MassStore_Host)
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}
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/* Indicate device no longer busy */
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UpdateStatus(Status_USBReady);
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LEDs_SetAllLEDs(LEDMASK_USB_READY);
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/* Wait until USB device disconnected */
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while (USB_IsConnected);
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@ -363,41 +346,6 @@ TASK(USB_MassStore_Host)
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}
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}
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/** Function to manage status updates to the user. This is done via LEDs on the given board, if available, but may be changed to
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* log to a serial port, or anything else that is suitable for status updates.
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*
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* \param CurrentStatus Current status of the system, from the MassStorageHost_StatusCodes_t enum
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*/
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void UpdateStatus(uint8_t CurrentStatus)
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{
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uint8_t LEDMask = LEDS_NO_LEDS;
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/* Set the LED mask to the appropriate LED mask based on the given status code */
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switch (CurrentStatus)
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{
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case Status_USBNotReady:
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LEDMask = (LEDS_LED1);
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break;
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case Status_USBEnumerating:
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LEDMask = (LEDS_LED1 | LEDS_LED2);
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break;
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case Status_USBReady:
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LEDMask = (LEDS_LED2);
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break;
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case Status_EnumerationError:
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case Status_HardwareError:
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case Status_SCSICommandError:
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LEDMask = (LEDS_LED1 | LEDS_LED3);
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break;
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case Status_Busy:
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LEDMask = (LEDS_LED1 | LEDS_LED4);
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break;
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}
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/* Set the board LEDs to the new LED mask */
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LEDs_SetAllLEDs(LEDMask);
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}
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/** Indicates that a communication error has occurred with the attached Mass Storage Device,
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* printing error codes to the serial port and waiting until the device is removed before
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* continuing.
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@ -424,7 +372,7 @@ void ShowDiskReadError(char* CommandString, bool FailedAtSCSILayer, uint8_t Erro
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Pipe_Freeze();
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/* Indicate device error via the status LEDs */
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UpdateStatus(Status_SCSICommandError);
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LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
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/* Wait until USB device disconnected */
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while (USB_IsConnected);
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Dean Camera
15 years ago