Hello Stephen,
Stephen Simmons <deeps...@gmail.com> writes: > I have been trying to get the 644P 'sanguino' to build and run, but it > never initializes uart0 properly. Leaves out the initialization of the > UBRR. The baud rate is defined in the INC. I believe that I have gone > through the instructions as best I can, but they don't exactly (to me) > match the 6.9 layout. I have been able to build from both the command line > and MicroChip studio. I have been working with AVR for well > over 20 years. concentrating on this part. The controller never talks to you? Is that "the error"? given: - controller atmega644p - board? sanguino??? I don't think, I have one of those ... releases/6.9/appl/arduino/sanguino.asm says: | .include "preamble.inc" | .equ F_CPU = 16000000 | .include "drivers/usart_0.asm" | .include "amforth.asm" - crystal frequency? 16 MHz - uart? usart_0.asm, which means pins d0,d1 Now. The Arduinos are sold with a bootloader on them and specific fuse settings. As far as I can tell, you always need to double check and mostly change the fuses. on atmega644p I use LFUSE=0xd7 HFUSE=0x99 or (more often) LFUSE=0xe6 HFUSE=0x99 releases/6.9/appl/arduino/readme.txt says: Fuses (E,H,L) FD F9 FF (Sanguino) So there is a difference. I have in the past prodded a few hours reading the datasheet to understand this. And then I never touch it again. There are websites to help with this, but I always use the datasheet. Then there is the baudrate hiding somewhere ... releases/6.9/avr8/preamble.inc says: ; 10 per mille (1 per cent) is ok. .set BAUD = 38400 ok. Now, what do I actually use? I have started with amforth before the appl/arduino directory existed. So I always base my projects on appl/template. And thus: | .../firmware/station-0x7f 33 > grep -v '^;' main.asm | grep -v '^$' | .include "preamble.inc" | .set AMFORTH_RO_SEG = NRWW_START_ADDR | .equ F_CPU = 11059200 | .set BAUD=115200 | .include "drivers/usart_0.asm" | .set WANT_IGNORECASE = 0 | .set WANT_INTERRUPTS = 1 | .set WANT_INTERRUPT_COUNTERS = 1 | .include "amforth.asm" Note that I use a baud rate crystal. Does this help? >>>snip< Cheers, Erich -- May the Forth be with you ... _______________________________________________ Amforth-devel mailing list for http://amforth.sf.net/ Amforth-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/amforth-devel
