monoxit/tsb1634

Attiny1634 serial boot loader based on TinySafeBoot http://jtxp.org/tech/tinysafeboot_en.htm.

Attiny 1634 serial boot loader based on TinySafeBoot

Original from TinySafeBoot http://jtxp.org/tech/tinysafeboot_en.htm.
Modified for Attiny1634.

Project Setup

Development environment

• TinySafeBoot software from http://jtxp.org/tech/tinysafeboot_en.htm
• Atmel Studio 6.2
• AVR writer (e.g. USBtinyISP from adafruit)
• FreeBasic
• Ruby (for formatting hex codes)

How can I see the project working before I change anything?

1. Open tsb1634.atsln and build project by Atmel Studio.
2. Format hex codes. E.g. >ruby -i.bak -pe '$_.gsub!(/(.+)/,"data "\1"")' tsb1634.hex
3. Replace tn1634 section of TinySafeBoot data.bas file with the formatted hex codes.
4. Compile TSB software (a host side tool) with FreeBasic. E.g. >fbc tsb.bas
5. Make bootloader codes (.hex file) by TSB software. E.g. >tsb tn1634 a7b0
6. Enable self-programming on the target by an AVR writer. E.g. >avrdude -c usbtiny -p t1634 -U efuse:w:0xFE:m
7. Write the bootloader into the target flash by an AVR writer. E.g. >avrdude -c usbtiny -p t1634 -U flash:w:tsb_tn1634_a7b0_20140619.hex
8. Connect USB (or bluetooth) UART converter TX/RX to target PA7:RX/PB0:TX.
9. Verify TSB connection. E.g. Reset target and >tsb com5 i
10. Write App. E.g. Reset target and >tsb com5 fw MI100R6.cpp.hex

License

GPLv3

tsb1634's Issues

tsb needs baudrate parameter

The command to verify TSB connection e.g. reset target >tsb com5 i is not working with Attiny1634 when using the 1MHz internal clock. You need to specify a slow enough baud rate: >tsb com5:2400 i.