/*\r
LUFA Library\r
- Copyright (C) Dean Camera, 2009.\r
+ Copyright (C) Dean Camera, 2010.\r
\r
dean [at] fourwalledcubicle [dot] com\r
www.fourwalledcubicle.com\r
*/\r
\r
/*\r
- Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
- Permission to use, copy, modify, and distribute this software\r
- and its documentation for any purpose and without fee is hereby\r
- granted, provided that the above copyright notice appear in all\r
- copies and that both that the copyright notice and this\r
- permission notice and warranty disclaimer appear in supporting\r
- documentation, and that the name of the author not be used in\r
- advertising or publicity pertaining to distribution of the\r
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+\r
+ Permission to use, copy, modify, distribute, and sell this \r
+ software and its documentation for any purpose is hereby granted\r
+ without fee, provided that the above copyright notice appear in \r
+ all copies and that both that the copyright notice and this\r
+ permission notice and warranty disclaimer appear in supporting \r
+ documentation, and that the name of the author not be used in \r
+ advertising or publicity pertaining to distribution of the \r
software without specific, written prior permission.\r
\r
The author disclaim all warranties with regard to this\r
* Main source file for the TeensyHID bootloader. This file contains the complete bootloader logic.\r
*/\r
\r
-#define INCLUDE_FROM_TEENSYHID_C\r
#include "TeensyHID.h"\r
\r
-/* Global Variables: */\r
/** Flag to indicate if the bootloader should be running, or should exit and allow the application code to run\r
* via a soft reset. When cleared, the bootloader will abort, the USB interface will shut down and the application\r
* started via a forced watchdog reset.\r
*/\r
bool RunBootloader = true;\r
\r
-\r
/** Main program entry point. This routine configures the hardware required by the bootloader, then continuously \r
* runs the bootloader processing routine until instructed to soft-exit.\r
*/\r
int main(void)\r
{\r
+ /* Setup hardware required for the bootloader */\r
+ SetupHardware();\r
+ \r
+ while (RunBootloader)\r
+ USB_USBTask();\r
+ \r
+ /* Disconnect from the host - USB interface will be reset later along with the AVR */\r
+ USB_Detach();\r
+\r
+ /* Enable the watchdog and force a timeout to reset the AVR */\r
+ wdt_enable(WDTO_250MS);\r
+\r
+ for (;;);\r
+}\r
+\r
+/** Configures all hardware required for the bootloader. */\r
+void SetupHardware(void)\r
+{\r
/* Disable watchdog if enabled by bootloader/fuses */\r
MCUSR &= ~(1 << WDRF);\r
wdt_disable();\r
\r
- /* Disable Clock Division */\r
- SetSystemClockPrescaler(0);\r
+ /* Disable clock division */\r
+ clock_prescale_set(clock_div_1);\r
\r
/* Relocate the interrupt vector table to the bootloader section */\r
MCUCR = (1 << IVCE);\r
\r
/* Initialize USB subsystem */\r
USB_Init();\r
- \r
- while (RunBootloader)\r
- USB_USBTask();\r
- \r
- /* Shut down the USB interface, so that the host will register the disconnection */\r
- USB_ShutDown();\r
-\r
- /* Wait 100ms to give the host time to register the disconnection */\r
- _delay_ms(100);\r
-\r
- /* Enable the watchdog and force a timeout to reset the AVR */\r
- wdt_enable(WDTO_250MS);\r
- \r
- for (;;);\r
}\r
\r
/** Event handler for the USB_ConfigurationChanged event. This configures the device's endpoints ready\r
* to relay data to and from the attached USB host.\r
*/\r
-EVENT_HANDLER(USB_ConfigurationChanged)\r
+void EVENT_USB_Device_ConfigurationChanged(void)\r
{\r
/* Setup HID Report Endpoint */\r
Endpoint_ConfigureEndpoint(HID_EPNUM, EP_TYPE_INTERRUPT,\r
ENDPOINT_BANK_SINGLE);\r
}\r
\r
-/** Event handler for the USB_UnhandledControlPacket event. This is used to catch standard and class specific\r
+/** Event handler for the USB_UnhandledControlRequest event. This is used to catch standard and class specific\r
* control requests that are not handled internally by the USB library (including the HID commands, which are\r
* all issued via the control endpoint), so that they can be handled appropriately for the application.\r
*/\r
-EVENT_HANDLER(USB_UnhandledControlPacket)\r
+void EVENT_USB_Device_UnhandledControlRequest(void)\r
{\r
/* Handle HID Class specific requests */\r
- switch (bRequest)\r
+ switch (USB_ControlRequest.bRequest)\r
{\r
case REQ_SetReport:\r
- if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))\r
+ Endpoint_ClearSETUP();\r
+ \r
+ /* Wait until the command has been sent by the host */\r
+ while (!(Endpoint_IsOUTReceived()));\r
+ \r
+ /* Read in the write destination address */\r
+ uint16_t PageAddress = Endpoint_Read_Word_LE();\r
+ \r
+ /* Check if the command is a program page command, or a start application command */\r
+ if (PageAddress == TEENSY_STARTAPPLICATION)\r
{\r
- Endpoint_ClearSetupReceived();\r
- \r
- /* Wait until the command (report) has been sent by the host */\r
- while (!(Endpoint_IsSetupOUTReceived()));\r
-\r
- /* Read in the write destination address */\r
- uint16_t PageAddress = Endpoint_Read_Word_LE();\r
+ RunBootloader = false;\r
+ }\r
+ else\r
+ {\r
+ /* Erase the given FLASH page, ready to be programmed */\r
+ boot_page_erase(PageAddress);\r
+ boot_spm_busy_wait();\r
\r
- /* Check if the command is a program page command, or a start application command */\r
- if (PageAddress == TEENSY_STARTAPPLICATION)\r
- {\r
- RunBootloader = false;\r
- }\r
- else\r
+ /* Write each of the FLASH page's bytes in sequence */\r
+ for (uint8_t PageByte = 0; PageByte < SPM_PAGESIZE; PageByte += 2)\r
{\r
- /* Erase the given FLASH page, ready to be programmed */\r
- boot_page_erase(PageAddress);\r
- boot_spm_busy_wait();\r
- \r
- /* Write each of the FLASH page's bytes in sequence */\r
- for (uint8_t PageByte = 0; PageByte < 128; PageByte += 2)\r
+ /* Check if endpoint is empty - if so clear it and wait until ready for next packet */\r
+ if (!(Endpoint_BytesInEndpoint()))\r
{\r
- /* Check if endpoint is empty - if so clear it and wait until ready for next packet */\r
- if (!(Endpoint_BytesInEndpoint()))\r
- {\r
- Endpoint_ClearSetupOUT();\r
- while (!(Endpoint_IsSetupOUTReceived()));\r
- }\r
-\r
- /* Write the next data word to the FLASH page */\r
- boot_page_fill(PageAddress + PageByte, Endpoint_Read_Word_LE());\r
+ Endpoint_ClearOUT();\r
+ while (!(Endpoint_IsOUTReceived()));\r
}\r
\r
- /* Write the filled FLASH page to memory */\r
- boot_page_write(PageAddress);\r
- boot_spm_busy_wait();\r
-\r
- /* Re-enable RWW section */\r
- boot_rww_enable();\r
+ /* Write the next data word to the FLASH page */\r
+ boot_page_fill(PageAddress + PageByte, Endpoint_Read_Word_LE());\r
}\r
\r
- Endpoint_ClearSetupOUT();\r
+ /* Write the filled FLASH page to memory */\r
+ boot_page_write(PageAddress);\r
+ boot_spm_busy_wait();\r
\r
- /* Wait until the host is ready to receive the request confirmation */\r
- while (!(Endpoint_IsSetupINReady()));\r
- \r
- /* Handshake the request by sending an empty IN packet */\r
- Endpoint_ClearSetupIN();\r
+ /* Re-enable RWW section */\r
+ boot_rww_enable();\r
}\r
+\r
+ Endpoint_ClearOUT();\r
+\r
+ Endpoint_ClearStatusStage();\r
\r
break;\r
}\r
projects / pub / USBasp.git / blobdiff