-/*\r
- LUFA Library\r
- Copyright (C) Dean Camera, 2010.\r
- \r
- dean [at] fourwalledcubicle [dot] com\r
- www.fourwalledcubicle.com\r
-*/\r
-\r
-/*\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
- software, including all implied warranties of merchantability\r
- and fitness. In no event shall the author be liable for any\r
- special, indirect or consequential damages or any damages\r
- whatsoever resulting from loss of use, data or profits, whether\r
- in an action of contract, negligence or other tortious action,\r
- arising out of or in connection with the use or performance of\r
- this software.\r
-*/\r
-\r
-/** \file\r
- *\r
- * Main source file for the TeensyHID bootloader. This file contains the complete bootloader logic.\r
- */\r
- \r
-#include "TeensyHID.h"\r
-\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
-/** 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
- /* Enable global interrupts so that the USB stack can function */\r
- sei();\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
- /* Relocate the interrupt vector table to the bootloader section */\r
- MCUCR = (1 << IVCE);\r
- MCUCR = (1 << IVSEL);\r
-\r
- /* Initialize USB subsystem */\r
- USB_Init();\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
-void EVENT_USB_Device_ConfigurationChanged(void)\r
-{\r
- /* Setup HID Report Endpoint */\r
- Endpoint_ConfigureEndpoint(HID_EPNUM, EP_TYPE_INTERRUPT,\r
- ENDPOINT_DIR_IN, HID_EPSIZE,\r
- ENDPOINT_BANK_SINGLE);\r
-}\r
-\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
-void EVENT_USB_Device_UnhandledControlRequest(void)\r
-{\r
- /* Handle HID Class specific requests */\r
- switch (USB_ControlRequest.bRequest)\r
- {\r
- case REQ_SetReport:\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 index */\r
- uint16_t PageIndex = Endpoint_Read_Word_LE();\r
- \r
- /* Check if the command is a program page command, or a start application command */\r
- if (PageIndex == TEENSY_STARTAPPLICATION)\r
- {\r
- RunBootloader = false;\r
- }\r
- else\r
- {\r
- #if (FLASHEND > 0xFFFF)\r
- uint32_t PageByteAddress = ((uint32_t)PageIndex << 8);\r
- #else\r
- uint16_t PageByteAddress = PageIndex;\r
- #endif\r
- \r
- /* Erase the given FLASH page, ready to be programmed */\r
- boot_page_erase(PageByteAddress);\r
- boot_spm_busy_wait();\r
- \r
- /* Write each of the FLASH page's bytes in sequence */\r
- #if (SPM_PAGESIZE == 128)\r
- for (uint8_t PageByte = 0; PageByte < SPM_PAGESIZE; PageByte += 2) \r
- #else\r
- for (uint16_t PageByte = 0; PageByte < SPM_PAGESIZE; PageByte += 2) \r
- #endif\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_ClearOUT();\r
- while (!(Endpoint_IsOUTReceived()));\r
- }\r
-\r
- /* Write the next data word to the FLASH page */\r
- boot_page_fill(PageByteAddress + PageByte, Endpoint_Read_Word_LE());\r
- }\r
-\r
- /* Write the filled FLASH page to memory */\r
- boot_page_write(PageByteAddress);\r
- boot_spm_busy_wait();\r
- }\r
-\r
- Endpoint_ClearOUT();\r
-\r
- Endpoint_ClearStatusStage();\r
- \r
- break;\r
- }\r
-}\r
+/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.fourwalledcubicle.com
+*/
+
+/*
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, 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 TeensyHID bootloader. This file contains the complete bootloader logic.
+ */
+
+#include "TeensyHID.h"
+
+/** Flag to indicate if the bootloader should be running, or should exit and allow the application code to run
+ * via a soft reset. When cleared, the bootloader will abort, the USB interface will shut down and the application
+ * started via a forced watchdog reset.
+ */
+bool RunBootloader = true;
+
+/** Main program entry point. This routine configures the hardware required by the bootloader, then continuously
+ * runs the bootloader processing routine until instructed to soft-exit.
+ */
+int main(void)
+{
+ /* Setup hardware required for the bootloader */
+ SetupHardware();
+
+ /* Enable global interrupts so that the USB stack can function */
+ sei();
+
+ while (RunBootloader)
+ USB_USBTask();
+
+ /* Disconnect from the host - USB interface will be reset later along with the AVR */
+ USB_Detach();
+
+ /* Enable the watchdog and force a timeout to reset the AVR */
+ wdt_enable(WDTO_250MS);
+
+ for (;;);
+}
+
+/** Configures all hardware required for the bootloader. */
+void SetupHardware(void)
+{
+ /* Disable watchdog if enabled by bootloader/fuses */
+ MCUSR &= ~(1 << WDRF);
+ wdt_disable();
+
+ /* Relocate the interrupt vector table to the bootloader section */
+ MCUCR = (1 << IVCE);
+ MCUCR = (1 << IVSEL);
+
+ /* Initialize USB subsystem */
+ USB_Init();
+}
+
+/** Event handler for the USB_ConfigurationChanged event. This configures the device's endpoints ready
+ * to relay data to and from the attached USB host.
+ */
+void EVENT_USB_Device_ConfigurationChanged(void)
+{
+ /* Setup HID Report Endpoint */
+ Endpoint_ConfigureEndpoint(HID_EPNUM, EP_TYPE_INTERRUPT,
+ ENDPOINT_DIR_IN, HID_EPSIZE,
+ ENDPOINT_BANK_SINGLE);
+}
+
+/** Event handler for the USB_UnhandledControlRequest 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_Device_UnhandledControlRequest(void)
+{
+ /* Handle HID Class specific requests */
+ switch (USB_ControlRequest.bRequest)
+ {
+ case REQ_SetReport:
+ Endpoint_ClearSETUP();
+
+ /* Wait until the command has been sent by the host */
+ while (!(Endpoint_IsOUTReceived()));
+
+ /* Read in the write destination index */
+ uint16_t PageIndex = Endpoint_Read_Word_LE();
+
+ /* Check if the command is a program page command, or a start application command */
+ if (PageIndex == TEENSY_STARTAPPLICATION)
+ {
+ RunBootloader = false;
+ }
+ else
+ {
+ #if (FLASHEND > 0xFFFF)
+ uint32_t PageByteAddress = ((uint32_t)PageIndex << 8);
+ #else
+ uint16_t PageByteAddress = PageIndex;
+ #endif
+
+ /* Erase the given FLASH page, ready to be programmed */
+ boot_page_erase(PageByteAddress);
+ boot_spm_busy_wait();
+
+ /* Write each of the FLASH page's bytes in sequence */
+ #if (SPM_PAGESIZE == 128)
+ for (uint8_t PageByte = 0; PageByte < SPM_PAGESIZE; PageByte += 2)
+ #else
+ for (uint16_t PageByte = 0; PageByte < SPM_PAGESIZE; PageByte += 2)
+ #endif
+ {
+ /* Check if endpoint is empty - if so clear it and wait until ready for next packet */
+ if (!(Endpoint_BytesInEndpoint()))
+ {
+ Endpoint_ClearOUT();
+ while (!(Endpoint_IsOUTReceived()));
+ }
+
+ /* Write the next data word to the FLASH page */
+ boot_page_fill(PageByteAddress + PageByte, Endpoint_Read_Word_LE());
+ }
+
+ /* Write the filled FLASH page to memory */
+ boot_page_write(PageByteAddress);
+ boot_spm_busy_wait();
+ }
+
+ Endpoint_ClearOUT();
+
+ Endpoint_ClearStatusStage();
+
+ break;
+ }
+}
projects / pub / USBasp.git / blobdiff