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* Change MIT license texts to SPDX-License-Identifier SPDX-License-Identifier is much easier to understand and grep than license text so use that instead. * Change GPL exception license texts to SPDX-License-Identifier SPDX-License-Identifier is much easier to understand and grep than license text so use that instead. * Change misc license texts to SPDX-License-Identifier There are some external code in repo which are not licenses as most of the stuff in this repo. We still want every file to have SPDX identifier to easily grep licenses. * Add currently used license files Even though Bacnet-Stack is using SPDX identifiers we still need to give those license files with source. For this reason add all license files to license/ folder. SPDX has also files which would make same thing but this is style which example Linux kernel is using and it is quite clear so I choose that one for now. I choosed not yet bring CC-PDDC as that is not right license for those files. --------- Co-authored-by: Kari Argillander <kari.argillander@fidelix.com>
This port was done with a AT91SAM7S-EK which contained a AT91SAM7S64 processor. The compiler was the GNU ARM compiler and tools from Yagarto project. The hardware was modified by severing the I-PA5 (RXD0), I-PA6 (TXD0), I-PA7 (RTS0) pads and rerouting those signals to a DS75176 RS-485 transceiver. PIN SIGNAL AT91SAM7S --- ------ --------- 1 RO RXD0 2 /RE RTS 3 DE RTS 4 DI TXD0 5 GND GND 6 DO n/c 7 DO n/c 8 +5V From EXT_VCC via 5V Regulator The makefile allows you to build just the dlmstp or a simple server, both for programming into the flash memory of the processor. The dlmstp is the datalink layer for MS/TP over RS-485. I used the makefile from the command line on Windows, and then used the SAM-BA to send the resulting .bin file to the board using a J-Link. To debug the code from flash, run the J-Link GDB Server and then: > arm-elf-gdb bacnet.elf I got the crt.s, at91sam7s256.ld, blinker.c, init.c, isr.c, and timer.c from James P Lynch. I created the rs485.c based on the initialization sequence from serial.c by Keil Electronik. I got the at91sam7s256.h file from Atmel via the Keil website. I started with the makefile from James P Lynch, but it didn't work for me. I then used some ideas from FreeRTOS makefile, and created my own makefile from scratch. Hopefully you find it useful! Steve Karg