After the "updater" is uploaded, the bootloader has to be exitted to start the just programmed firmware. (Replug or reset the board.)
When the "updater" takes over control (LED on PD5 flashes), it first checks the current installed bootloader with the one contained within the "updater".
If both are identical, no writing is performed and
it stops working by signalling "operation complete" (LED on PB0 flashes, too).
If there are differences it starts overwriting the existing bootloader with the new one. WARNING: In this phase the board should not be disconnected from power until it signalls "success" by flashing the
LED on PB0.(LED on PB1 only flashes when update was done).
The procedure can be repeated some times (since the updater checks before write), until the updater haven't done any change anymore and it only signalls completition with LEDs PB0 and PD5. (PB1 will not flash).
After this it is save to upload (and overwrite the "updater" with) new firmwares by the user...
| Revision 3 and newer |
|---|
| bootloader update to v0.96 (see USBaspLoader and patch) |
| bootloader update to v0.96.2 (see USBaspLoader and patch) |
| bootloader update to v0.97 (see USBaspLoader and patch) |
| bootloader update to v0.97.1 (see USBaspLoader and patch) |
| ATmega328P version |
|---|
|
!! BUG !! |
|
!! BUG !! |
|
!! BUG !! |
| bootloader update to v0.97.1 (see USBaspLoader) |
| Revision 2 and older |
|---|
| bootloader update to v0.95.1 (see USBaspLoader and patch) |
| bootloader update to v0.96 (see USBaspLoader) |
| bootloader update to v0.96.2 (see USBaspLoader) |
| bootloader update to v0.97 (see USBaspLoader) |
| bootloader update to v0.97.1 (see USBaspLoader) |