diff options
| -rwxr-xr-x | bootloaders/atmega168/ATmegaBOOT_168.c | 17 | ||||
| -rw-r--r-- | bootloaders/atmega168/ATmegaBOOT_168_pro_8MHz.hex | 158 | ||||
| -rwxr-xr-x | bootloaders/atmega168/Makefile | 6 |
3 files changed, 100 insertions, 81 deletions
diff --git a/bootloaders/atmega168/ATmegaBOOT_168.c b/bootloaders/atmega168/ATmegaBOOT_168.c index c542af1..7bbf24e 100755 --- a/bootloaders/atmega168/ATmegaBOOT_168.c +++ b/bootloaders/atmega168/ATmegaBOOT_168.c @@ -251,7 +251,19 @@ int main(void) uint8_t ch,ch2;
uint16_t w;
+#ifdef WATCHDOG_MODS
+ ch = MCUSR;
+ MCUSR = 0;
+
+ WDTCSR |= _BV(WDCE) | _BV(WDE);
+ WDTCSR = 0;
+
+ // Check if the WDT was used to reset, in which case we dont bootload and skip straight to the code. woot.
+ if (! (ch & _BV(EXTRF))) // if its a not an external reset...
+ app_start(); // skip bootloader
+#else
asm volatile("nop\n\t");
+#endif
/* set pin direction for bootloader pin and enable pullup */
/* for ATmega128, two pins need to be initialized */
@@ -445,6 +457,11 @@ int main(void) /* Leave programming mode */
else if(ch=='Q') {
nothing_response();
+#ifdef WATCHDOG_MODS
+ // autoreset via watchdog (sneaky!)
+ WDTCSR = _BV(WDE);
+ while (1); // 16 ms
+#endif
}
diff --git a/bootloaders/atmega168/ATmegaBOOT_168_pro_8MHz.hex b/bootloaders/atmega168/ATmegaBOOT_168_pro_8MHz.hex index f1d4fb0..03ff00c 100644 --- a/bootloaders/atmega168/ATmegaBOOT_168_pro_8MHz.hex +++ b/bootloaders/atmega168/ATmegaBOOT_168_pro_8MHz.hex @@ -5,7 +5,7 @@ :103840000C944F1C0C944F1C0C944F1C0C944F1C4C
:103850000C944F1C0C944F1C0C944F1C0C944F1C3C
:103860000C944F1C0C944F1C11241FBECFEFD4E0BE
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:1038900001C01D92AD30B107E1F70C94311D0C94BD
:1038A000001CCF93DF93CDB7DEB724970FB6F89403
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diff --git a/bootloaders/atmega168/Makefile b/bootloaders/atmega168/Makefile index 6be8dbe..c55cfc9 100755 --- a/bootloaders/atmega168/Makefile +++ b/bootloaders/atmega168/Makefile @@ -81,21 +81,21 @@ lilypad_resonator: HFUSE = DD lilypad_resonator: LFUSE = C6 pro8: TARGET = pro_8MHz -pro8: CFLAGS += '-DMAX_TIME_COUNT=F_CPU>>4' '-DNUM_LED_FLASHES=1' +pro8: CFLAGS += '-DMAX_TIME_COUNT=F_CPU>>4' '-DNUM_LED_FLASHES=1' '-DWATCHDOG_MODS' pro8: $(PROGRAM)_pro_8MHz.hex pro8: AVR_FREQ = 8000000L pro8: HFUSE = DD pro8: LFUSE = C6 pro16: TARGET = pro_16MHz -pro16: CFLAGS += '-DMAX_TIME_COUNT=F_CPU>>4' '-DNUM_LED_FLASHES=1' +pro16: CFLAGS += '-DMAX_TIME_COUNT=F_CPU>>4' '-DNUM_LED_FLASHES=1' '-DWATCHDOG_MODS' pro16: $(PROGRAM)_pro_16MHz.hex pro16: AVR_FREQ = 16000000L pro16: HFUSE = DD pro16: LFUSE = C6 pro20: TARGET = pro_20mhz -pro20: CFLAGS += '-DMAX_TIME_COUNT=F_CPU>>4' '-DNUM_LED_FLASHES=1' +pro20: CFLAGS += '-DMAX_TIME_COUNT=F_CPU>>4' '-DNUM_LED_FLASHES=1' '-DWATCHDOG_MODS' pro20: $(PROGRAM)_pro_20mhz.hex pro20: AVR_FREQ = 20000000L pro20: HFUSE = DD |