forked from mfulz_github/qmk_firmware
Make CDC class bootloader hard-reset the AVR when exited instead of a soft-reset. Reduce size of the TeensyHID bootloader slightly.
Fix the TeensyHID bootloader for the larger USB AVR devices, since Paul uses a different (undocumented) addressing scheme on these devices.
This commit is contained in:
Dean Camera
parent
add5192366
commit
c3db72afdc
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@ -54,8 +54,8 @@ CDC_Line_Coding_t LineCoding = { .BaudRateBPS = 9600,
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uint32_t CurrAddress;
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/** Flag to indicate if the bootloader should be running, or should exit and allow the application code to run
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* via a soft reset. When cleared, the bootloader will abort, the USB interface will shut down and the application
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* jumped to via an indirect jump to location 0x0000.
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* via a watchdog reset. When cleared the bootloader will exit, starting the watchdog and entering an infinite
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* loop until the AVR restarts and the application runs.
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*/
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bool RunBootloader = true;
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@ -78,12 +78,13 @@ int main(void)
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USB_USBTask();
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}
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/* Reset all configured hardware to their default states for the user app */
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ResetHardware();
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/* Disconnect from the host - USB interface will be reset later along with the AVR */
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USB_Detach();
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/* Start the user application */
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AppPtr_t AppStartPtr = (AppPtr_t)0x0000;
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AppStartPtr();
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/* Enable the watchdog and force a timeout to reset the AVR */
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wdt_enable(WDTO_250MS);
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for (;;);
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}
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/** Configures all hardware required for the bootloader. */
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@ -104,20 +105,6 @@ void SetupHardware(void)
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USB_Init();
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}
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/** Resets all configured hardware required for the bootloader back to their original states. */
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void ResetHardware(void)
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{
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/* Shut down the USB subsystem */
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USB_ShutDown();
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/* Relocate the interrupt vector table back to the application section */
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MCUCR = (1 << IVCE);
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MCUCR = 0;
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/* Re-enable RWW section */
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boot_rww_enable();
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}
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/** Event handler for the USB_ConfigurationChanged event. This configures the device's endpoints ready
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* to relay data to and from the attached USB host.
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*/
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@ -117,7 +117,6 @@
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/* Function Prototypes: */
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void CDC_Task(void);
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void SetupHardware(void);
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void ResetHardware(void);
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void EVENT_USB_Device_ConfigurationChanged(void);
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void EVENT_USB_Device_UnhandledControlRequest(void);
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@ -93,7 +93,7 @@
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/** Vendor usage page for the Teensy 2.0 board */
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#define TEENSY_USAGEPAGE_20 0x1B
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/** Vendor usage page for the Teensy++ 1.0 board */
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/** Vendor usage page for the Teensy++ 2.0 board */
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#define TEENSY_USAGEPAGE_20PP 0x1C
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#if defined(USB_SERIES_2_AVR)
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@ -105,18 +105,24 @@ void EVENT_USB_Device_UnhandledControlRequest(void)
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/* Wait until the command has been sent by the host */
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while (!(Endpoint_IsOUTReceived()));
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/* Read in the write destination address */
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uint16_t PageAddress = Endpoint_Read_Word_LE();
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/* Read in the write destination index */
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uint16_t PageIndex = Endpoint_Read_Word_LE();
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/* Check if the command is a program page command, or a start application command */
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if (PageAddress == TEENSY_STARTAPPLICATION)
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if (PageIndex == TEENSY_STARTAPPLICATION)
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{
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RunBootloader = false;
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}
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else
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{
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#if (SPM_PAGESIZE == 128)
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uint16_t PageByteAddress = PageIndex;
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#else
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uint32_t PageByteAddress = ((uint32_t)PageIndex << 8);
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#endif
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/* Erase the given FLASH page, ready to be programmed */
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boot_page_erase(PageAddress);
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boot_page_erase(PageByteAddress);
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boot_spm_busy_wait();
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/* Write each of the FLASH page's bytes in sequence */
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@ -134,15 +140,12 @@ void EVENT_USB_Device_UnhandledControlRequest(void)
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}
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/* Write the next data word to the FLASH page */
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boot_page_fill(PageAddress + PageByte, Endpoint_Read_Word_LE());
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boot_page_fill(PageByteAddress + PageByte, Endpoint_Read_Word_LE());
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}
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/* Write the filled FLASH page to memory */
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boot_page_write(PageAddress);
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boot_page_write(PageByteAddress);
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boot_spm_busy_wait();
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/* Re-enable RWW section */
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boot_rww_enable();
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}
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Endpoint_ClearOUT();
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@ -13,7 +13,7 @@
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* - AT90USB162 (Teensy 1.0)
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* - AT90USB646 (Teensy++ 1.0)
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* - ATMEGA32U4 (Teensy 2.0)
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* - AT90USB1287 (Teensy++ 2.0)
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* - AT90USB1286 (Teensy++ 2.0)
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*
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* \section SSec_Info USB Information:
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*
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@ -51,7 +51,9 @@
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*
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* Out of the box this bootloader builds for the ATMEGA32U4, and will fit into 2-4KB of bootloader space. For other
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* devices, the makefile will need to be updated to reflect the altered MCU model and bootloader start address. When
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* calculating the bootloader start address, use (TARGET_FLASH_SIZE_BYTES - 4096).
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* calculating the bootloader start address, use (TARGET_FLASH_SIZE_BYTES - 4096) for targets where the bootloader
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* compiles larger than 2KB, or (TARGET_FLASH_SIZE_BYTES - 2048) for smaller targets where the bootloader compiles
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* under 2KB.
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*
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* This spoofs (with permission) the official Teensy bootloader's VID and PID, so that the software remains
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* compatible with no changes.
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@ -68,7 +68,7 @@ BOARD =
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# does not *change* the processor frequency - it should merely be updated to
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# reflect the processor speed set externally so that the code can use accurate
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# software delays.
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F_CPU = 16000000
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F_CPU = 8000000
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# Input clock frequency.
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@ -36,6 +36,8 @@
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* selected (thanks to Steffan Woltjer)
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* - Removed software PDI and TPI emulation from the AVRISP-MKII clone project as it was very buggy and slow - PDI and TPI must
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* now be implemented via seperate programming headers
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* - The CDC class bootloader now uses a watchdog reset rather than a soft-reset when exited to ensure that all hardware is
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* properly reset to their defaults
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*
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* <b>Fixed:</b>
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* - Fixed software PDI/TPI programming mode in the AVRISP project not correctly toggling just the clock pin
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@ -63,6 +65,7 @@
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* HID_HOST_BOOT_PROTOCOL_ONLY compile time option is set
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* - Fixed INTERRUPT_CONTROL_ENDPOINT compile time option preventing other interrupts from occuring while the control endpoint
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* request is being processed, causing possible lockups if a USB interrupt occurs during a transfer
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* - Fixed TeensyHID bootloader not working on some USB AVR models with the official TeensyLoader GUI application
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*
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* \section Sec_ChangeLog100219 Version 100219
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*
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