diff options
Diffstat (limited to 'lib/lufa/Bootloaders/HID/BootloaderHID.c')
| -rw-r--r-- | lib/lufa/Bootloaders/HID/BootloaderHID.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/lib/lufa/Bootloaders/HID/BootloaderHID.c b/lib/lufa/Bootloaders/HID/BootloaderHID.c deleted file mode 100644 index fa1dd5873e..0000000000 --- a/lib/lufa/Bootloaders/HID/BootloaderHID.c +++ /dev/null @@ -1,198 +0,0 @@ -/* - LUFA Library - Copyright (C) Dean Camera, 2017. - - dean [at] fourwalledcubicle [dot] com - www.lufa-lib.org -*/ - -/* - Copyright 2017 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 disclaims 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 HID class bootloader. This file contains the complete bootloader logic. - */ - -#include "BootloaderHID.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. - */ -static bool RunBootloader = true; - -/** Magic lock for forced application start. If the HWBE fuse is programmed and BOOTRST is unprogrammed, the bootloader - * will start if the /HWB line of the AVR is held low and the system is reset. However, if the /HWB line is still held - * low when the application attempts to start via a watchdog reset, the bootloader will re-start. If set to the value - * \ref MAGIC_BOOT_KEY the special init function \ref Application_Jump_Check() will force the application to start. - */ -uint16_t MagicBootKey ATTR_NO_INIT; - - -/** Special startup routine to check if the bootloader was started via a watchdog reset, and if the magic application - * start key has been loaded into \ref MagicBootKey. If the bootloader started via the watchdog and the key is valid, - * this will force the user application to start via a software jump. - */ -void Application_Jump_Check(void) -{ - /* If the reset source was the bootloader and the key is correct, clear it and jump to the application */ - if ((MCUSR & (1 << WDRF)) && (MagicBootKey == MAGIC_BOOT_KEY)) - { - /* Turn off the watchdog */ - MCUSR &= ~(1 << WDRF); - wdt_disable(); - - /* Clear the boot key and jump to the user application */ - MagicBootKey = 0; - - // cppcheck-suppress constStatement - ((void (*)(void))0x0000)(); - } -} - -/** 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 */ - GlobalInterruptEnable(); - - while (RunBootloader) - USB_USBTask(); - - /* Disconnect from the host - USB interface will be reset later along with the AVR */ - USB_Detach(); - - /* Unlock the forced application start mode of the bootloader if it is restarted */ - MagicBootKey = MAGIC_BOOT_KEY; - - /* Enable the watchdog and force a timeout to reset the AVR */ - wdt_enable(WDTO_250MS); - - for (;;); -} - -/** Configures all hardware required for the bootloader. */ -static void SetupHardware(void) -{ - /* Disable watchdog if enabled by bootloader/fuses */ - MCUSR &= ~(1 << WDRF); - wdt_disable(); - - /* Disable clock division */ - clock_prescale_set(clock_div_1); - - /* 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_IN_EPADDR, EP_TYPE_INTERRUPT, HID_IN_EPSIZE, 1); -} - -/** Event handler for the USB_ControlRequest event. This is used to catch and process control requests sent to - * the device from the USB host before passing along unhandled control requests to the library for processing - * internally. - */ -void EVENT_USB_Device_ControlRequest(void) -{ - /* Ignore any requests that aren't directed to the HID interface */ - if ((USB_ControlRequest.bmRequestType & (CONTROL_REQTYPE_TYPE | CONTROL_REQTYPE_RECIPIENT)) != - (REQTYPE_CLASS | REQREC_INTERFACE)) - { - return; - } - - /* Process HID specific control requests */ - switch (USB_ControlRequest.bRequest) - { - case HID_REQ_SetReport: - Endpoint_ClearSETUP(); - - /* Wait until the command has been sent by the host */ - while (!(Endpoint_IsOUTReceived())); - - /* Read in the write destination address */ - #if (FLASHEND > 0xFFFF) - uint32_t PageAddress = ((uint32_t)Endpoint_Read_16_LE() << 8); - #else - uint16_t PageAddress = Endpoint_Read_16_LE(); - #endif - - /* Check if the command is a program page command, or a start application command */ - #if (FLASHEND > 0xFFFF) - if ((uint16_t)(PageAddress >> 8) == COMMAND_STARTAPPLICATION) - #else - if (PageAddress == COMMAND_STARTAPPLICATION) - #endif - { - RunBootloader = false; - } - else if (PageAddress < BOOT_START_ADDR) - { - /* Erase the given FLASH page, ready to be programmed */ - boot_page_erase(PageAddress); - boot_spm_busy_wait(); - - /* Write each of the FLASH page's bytes in sequence */ - for (uint8_t PageWord = 0; PageWord < (SPM_PAGESIZE / 2); PageWord++) - { - /* 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(PageAddress + ((uint16_t)PageWord << 1), Endpoint_Read_16_LE()); - } - - /* Write the filled FLASH page to memory */ - boot_page_write(PageAddress); - boot_spm_busy_wait(); - - /* Re-enable RWW section */ - boot_rww_enable(); - } - - Endpoint_ClearOUT(); - - Endpoint_ClearStatusStage(); - break; - } -} - |