"Arduino" inspired designs. Need something custom? Contact firstname.lastname@example.org
addition to the CrossRoads card family: Standalone Programmer!
needed to program some cards in the field but didn't have access to a
laptop? Now you don't need one! We collaborated with Nick Gammon and
turned his "Upload Hexfile from SD card" into a full-fledged standalone
programmer. Connect up a power source (3xAA battery pack, 5VDC
wallwart, 7-12VDC wallwart), select a program and press the Start
programmer supporting up to 256 files ($48). Contact us
one. All boards include a Sandisk 4GB SD card and 6 inch/15cm
programming cable. Shipping & paypal fee added to all orders.
Card includes a 16MHz Atmega328P programmed for 256 file support;
a 5V linear regulator with reverse polarity
protection diode; a 3.3V regulator to power the SD card socket; a 5V to
3.3V buffer for the signals to the SD card socket; a 3.3V to 5V
buffer for the serial data from the SD card socket; an ICSP
header for initial fuse burning and bootloader programming; a "FTDI" header for
serial downloads; a P-ICSP header to connect to the board to be
programmed; Green, Yellow, and Red status LEDs; a Start button; a
Select button to advance the count by 10 if you don't want to spin the
rotary encoder; a rotary encoder to advance the count by ones;
and 2.1/5.5mm barrel jack connector feeding power to the regulator.
2 thru hole pads, JP1 & JP2, may be connected; this bypasses
the 5V regulator to bring 4.5V (from 3AA battery pack for
example) or 5V from a wallwart in from the barrel jack connector.
Nick Gammon code can
be found here.
Save both files into the same folder; when the .ino is is opened, the
.h file will appear as a tab. Bill Greiman/Fat16lib SdFat library
for the SD
card can be found here.
I have SdFat loaded at C:/Arduino/libraries/SdFat. EEPROM library
is part of the Arduino distribution.
These two #defines get changed as needed:
#define CROSSROADS_PROGRAMMING_BOARD true (Set to true)
#define NO_ENCODER false
#define HEX_FILE_NAMES true
The Two Display programmer
has two display drivers and two 7-segment displays, a Rotary
to cycle thru the 256 files, CODE00.HEX to CODEFF.HEX, and a white
Select button to optionally advance by 10 thru the files.
The display will show the 2 digits as the encoder is turned showing the
file to be selected. Two letter Status codes are
displayed along with the flashing LEDs. The last file
selected is saved in EEPROM for re-use upon powerup.
With the Arduino IDE,
a .hex file is created when code is compiled when Sketch:Export
compiled binary is selected.
Two files are created:
The second one contains the basic bootloader as well.
Both are stored in the your_sketch_name directory that the IDE compiles
and saves in to.
Rename the selected file as desired, from CODE00.HEX to CODEFF.hex
The 6-pin cable is
connected from the
programmer header, P-ICSP, and connects to the ICSP header of the
card to be programmed. The programmer card is loaded with
software rev .125i and will set the fuses for a '328P, 1284P, and '2560
to run the bootloader.
If you do not want a bootloader, let me know and I will load .125h
instead, and the bootloader will be skipped over if the .hex file
Upon power up, with no SD card inserted, the Red Error LED will flash 5
times slowly, pause, and continue flashing. Insert the SD card, and the
Green Ready light will turn on solid.
Use the rotary encoder and/or the Select to move forward and backward
files named CODE00.HEX to CODEFF.HEX. When the desired file
is displayed, press the green Start button.
Yellow Working LED will flash as the program is loaded. When done, the
Green Ready light will flash several times indicating programming
done, then turns on Solid
again. Power may be removed and the programming cable disconnected any
time after the Green flashing begins. Other errors are
not likely, see below if one pops up.
The display will
change to 'Pr' as programming starts, then 'VF' (small 'uF') while the
programming is Verified, and then 'AA" (Alright! Alright!) when
completes. The green Ready LED will do some flashing, and the display
will return to the selected file.
Common errors: 'Sd' - no SD card. 'Ch' - cannot enter programming
on target (not connected?). 'FL' - file selected not found on the SD
Seen as programmer comes to life, or unknown error. Other errors are
likely, see below if one pops up.
messages and Display messges:
Display board will show both letters of the (message).
LED codes (flash counts) - each sequence repeats 5 times
Problems with SD card or programming target chip
Red x 1 = Cannot open SD card (Sd)
Red x 2 = Cannot read file 'firmware.hex' (FL)
Red x 3 = Cannot enter programming mode in target chip (Ch)
Red x 4 = This chip does not have a bootloader fuse (Fu)
Red x 5 = Cannot read chip signature (Sg)
Red x 6 = Unrecognized signature (Un)
Red x 7 = Bad start address in hex file for code (Ad)
Red x 8 = Verification error (bd)
Problems with firmware.hex file
Red + yellow x 1 = Line in file is too long (E1)
Red + yellow x 2 = Line in file is too short (E2)
Red + yellow x 3 = Line does not start with a colon (:) (E3)
Red + yellow x 4 = Invalid hex digits (should be 0-9, A-F) (E4)
Red + yellow x 5 = Bad sumcheck at end of line (E5)
Red + yellow x 6 = Line not expected length (E6)
Red + yellow x 7 = Unknown record type (E7)
Red + yellow x 8 = No 'end of file' record in file (E8)
Red + yellow x 9 = File will not fit into flash of target (LG)
Green x 3 = Flashed and verified OK - sequence repeats 10 times (AA)
Green (steady) = Ready to program (close switch to commence)
Yellow (flashing) = Programming (Pr)
Green (steady) + yellow (flashing) = verifying (uF)
No LEDs on = No power?
reach Head Coach Robert, Click here email@example.com
General Questions, Click firstname.lastname@example.org
2018 Cross Roads Fencing Center, LLC. All rights reserved.