Sun Nov 1 19:02:14 GMT 2020

Bitbanged Serial

Program is working well. Prints some sample text, then an endless string of ascii '5' for use when calibrating the exact value of 'SECU' (see code).

8.68 uSec basic pulse width (115,200 bps)

ItsyBitsyM4 (ATSAMD51G19A) from Adafruit.

Older version of this README follows.

Sun Nov 1 11:52:16 UTC 2020

Bitbanged Serial

This seems to be a variant of ainsuForth-d51, privately held as expA (experiment 'A' iirc).

If that's the case, it's an Atmel Start based experiment on serial output, using only software.

Hardware: Probably Feather M4 Express.

At this writing (November 2020) there's just the one C source file, distinguished by 'bit_CLR' and 'bit_SET' utterances

(That will probably identify the correct file uniquely).

Name		Name	Last commit message	Last commit date
Latest commit History 251 Commits
0-Distrib.d		0-Distrib.d
00-bitbang.d		00-bitbang.d
CMSIS		CMSIS
armcc		armcc
config		config
examples		examples
gcc		gcc
hal		hal
hpl		hpl
hri		hri
include		include
.gitignore		.gitignore
.touchfile		.touchfile
AtmelStart.env_conf		AtmelStart.env_conf
AtmelStart.gpdsc		AtmelStart.gpdsc
COMPILES_CLEANLY		COMPILES_CLEANLY
LICENSE		LICENSE
NOTE.NOV.2020		NOTE.NOV.2020
README.md		README.md
atmel_start.c		atmel_start.c
atmel_start.h		atmel_start.h
atmel_start_config.atstart		atmel_start_config.atstart
atmel_start_pins.h		atmel_start_pins.h
clock_init.c		clock_init.c
clock_init.h		clock_init.h
driver_init.c		driver_init.c
driver_init.h		driver_init.h
gpio_local.c		gpio_local.c
gpio_local.h		gpio_local.h
main.c		main.c
ready.for.RELEASE.txt		ready.for.RELEASE.txt
sources.txt		sources.txt