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Fix bootloader jump use word address
- Call of function pointer is compiled into 'icall' instruction. It should use word address but it has used byte address :( It seems jump has worked luckily by chance until now. why it worked?tags/v1.9
tmk
10 years ago
1 changed files with 4 additions and 3 deletions
+ 4
- 3
common/bootloader.c
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| @@ -71,7 +71,8 @@ void bootloader_jump_after_watchdog_reset(void) | |||
| MCUSR &= ~(1<<WDRF); | |||
| wdt_disable(); | |||
| ((void (*)(void))BOOTLOADER_START)(); | |||
| // This is compled into 'icall', address should be in word unit, not byte. | |||
| ((void (*)(void))(BOOTLOADER_START/2))(); | |||
| } | |||
| } | |||
| @@ -141,7 +142,7 @@ void bootloader_jump(void) { | |||
| ADCSRA = 0; TWCR = 0; UCSR0B = 0; | |||
| #endif | |||
| // start Bootloader | |||
| ((void (*)(void))BOOTLOADER_START)(); | |||
| // This is compled into 'icall', address should be in word unit, not byte. | |||
| ((void (*)(void))(BOOTLOADER_START/2))(); | |||
| } | |||
| #endif | |||
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