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Diffstat (limited to 'bootloaders/optiboot/README.TXT')
| -rw-r--r-- | bootloaders/optiboot/README.TXT | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/bootloaders/optiboot/README.TXT b/bootloaders/optiboot/README.TXT index 9a68e23..7e2f46d 100644 --- a/bootloaders/optiboot/README.TXT +++ b/bootloaders/optiboot/README.TXT @@ -27,7 +27,7 @@ this may change if compiler versions drift apart between CrossPack and the Arduino IDE.) -Building optiboot in the arduino IDE install. +Building Optiboot in the Arduino IDE Install. Work in the .../hardware/arduino/bootloaders/optiboot/ and use the "omake <targets>" command, which just generates a command that uses @@ -44,7 +44,7 @@ the programs it needs, so you need to work in the existing optiboot directory (or something created at the same "level") for it to work. -Building optiboot in the arduino source development install. +Building Optiboot in the Arduino Source Development Install. In this case, there is no special shell script, and you're assumed to have "make" installed somewhere in your path. @@ -53,3 +53,18 @@ expected directory. Work in Arduino/hardware/arduino/bootloaders/optiboot and use make OS=windows ENV=arduinodev <targets> or make OS=macosx ENV=arduinodev <targets> + + +Programming Chips Using the _isp Targets + +The CPU targets have corresponding ISP targets that will actuall +program the bootloader into a chip. "atmega328_isp" for the atmega328, +for example. These will set the fuses and lock bits as appropriate as +well as uploading the bootloader code. + +The makefiles default to using a USB programmer, but you can use +a serial programmer like ArduinoISP by changing the appropriate +variables when you invoke make: + + make ISPTOOL=stk500v1 ISPPORT=/dev/tty.usbserial-A20e1eAN \ + ISPSPEED=-b19200 atmega328_isp |