AVR Bootloader for MK-FlightCtrl
Olaf Rempel
125bdc1729
- current firmware need more space -> reduce bootloader size from 4K => 2K
- remove timer ISR
- remove interrupt vectors from linked binary
- make avr910 bootloader entry command more robust (old: 'S', new: { 0x1B, 'S'} )
- add compat bootloader entry command (rx: { 0x1B, 0xAA } -> tx: 'MKBL')
- do not leave bootloader after upgrading twiboot slave
- do not erase local flash when upgrading twiboot slave
- remove readable chipinfo output from twiboot slaves
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| .gitignore | ||
| main.c | ||
| Makefile | ||
| README | ||
1) Flash FC firmware:
# reset running firmware (MCU will execute bootloader only for ~1s!)
$ echo -e -n "#aR@S\r" > /dev/ttyUSB1
# flash new firmware
$ avrdude -p m644p -c butterfly -b 57600 -P /dev/ttyUSB1 -U flash:w:/tmp/Flight-Ctrl_MEGA644_V0_82a.hex
2) Flash BLMC firmware (via twiboot):
# enter bootloader (0x1B, 'S'), select first twi-slave ('1'):
$ echo -e -n "\x1BS1" > /dev/ttyUSB1
# flash new firmware
$ avrdude -p m8 -c butterfly -b 57600 -P /dev/ttyUSB1 -U flash:w:/tmp/blmc.hex
# select next twi-slave (bootloader is still active)
$ echo -e -n "2" > /dev/ttyUSB1
3) Other Commands:
'0' => select FC internal flash/eeprom
'1' - '4' => select twi-slave 1-4, print bootloader version
'I' => start application on selected twi-slave, print application version
'l' => start selected motor
'k' => stop selected motor