di0ib/tmk_keyboard_custom
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Fix watchdog in bootloader jump

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- disable watchdog after watchdog reset
- clear WDRF after watchdog reset
This commit is contained in:
tmk 2013-03-10 15:05:28 +09:00
parent 1f312d2c85
commit f7a1a8f80f
1 changed files with 15 additions and 12 deletions
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27
common/bootloader.c
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@ -11,15 +11,16 @@
#endif
/* Boot Section Size in bytes
* Teensy halfKay 512
* Atmel DFU loader 4096
* LUFA bootloader 4096
/* Boot Section Size in *BYTEs*
* Teensy halfKay 512
* Teensy++ halfKay 1024
* Atmel DFU loader 4096
* LUFA bootloader 4096
*/
#ifndef BOOT_SIZE
#define BOOT_SIZE 512
#endif
#define FLASH_SIZE (FLASHEND + 1)
#define FLASH_SIZE (FLASHEND + 1L)
#define BOOTLOADER_START (FLASH_SIZE - BOOT_SIZE)
@ -58,13 +59,15 @@ void bootloader_jump_after_watchdog_reset(void) __attribute__ ((used, naked, sec
void bootloader_jump_after_watchdog_reset(void)
{
if ((MCUSR & (1<<WDRF)) && reset_key == BOOTLOADER_RESET_KEY) {
#if defined(__AVR_ATmega168__) || defined(__AVR_ATmega168P__) || defined(__AVR_ATmega328P__)
// This makes custom USBasploader come up.
MCUSR = 0;
#endif
reset_key = 0;
// My custom USBasploader requires this to come up.
MCUSR = 0;
// Seems like Teensy halfkay loader requires clearing WDRF and disabling watchdog.
MCUSR &= ~(1<<WDRF);
wdt_disable();
((void (*)(void))BOOTLOADER_START)();
}
}
@ -138,4 +141,4 @@ void bootloader_jump(void) {
// start Bootloader
((void (*)(void))BOOTLOADER_START)();
}
#endif
#endif