Doug Brown
e2963070bc
Added ability to tell programmer firmware to selectively unlock chips.
2013-07-04 12:10:18 -07:00
Doug Brown
0ebb9d2281
Finished implementing protocols for reading/writing portions of the SIMM
2012-10-17 21:31:00 -07:00
Doug Brown
bf583bf65b
Fixed a couple of bugs -- first, I was reading the wrong datasheet.
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Second, I was doing a bitwise AND when I was trying to do a modulo.
The firmware is now tested for erasing only a portion of the SIMM.
2012-10-16 21:25:15 -07:00
Doug Brown
69f644e5ce
Fixing programmer protocol enum I left out
2012-10-16 18:52:59 -07:00
Doug Brown
3252f66749
Added untested support for erasing a specific portion of the SIMM
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(in 256 KB increments). Won't be able to test it until I implement it in
the control software as well, but I think it should work.
2012-10-16 18:36:55 -07:00
Doug Brown
7bbfc23c1a
Added untested support for erasing a specific portion of the SIMM
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(in 256 KB increments). Won't be able to test it until I implement it in
the control software as well, but I think it should work.
2012-10-15 22:00:29 -07:00
Doug Brown
d484d126e5
Got rid of my weird "inverse data" hack for verification and turned on
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the pull-up resistors on every read instead. That's a better technique
and also makes other things more consistent -- e.g. reading back 0xFF
if a chip identification is attempted when a chip isn't installed.
2012-09-30 20:58:07 -07:00
Doug Brown
2c8e7e7184
Fixed the problem that caused no chip present to verify OK after a write
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The problem was that the data bus would "remember" the last data I wrote
to it if a chip was not driving the data bus on a read, so it would
think that the chip had returned the correct data. I fixed it by writing
the opposite data to the data bus before a verification read.
2012-09-30 16:27:01 -07:00
Doug Brown
667c2c5a2d
Added verify during write. It seems to mostly work except when the chip
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is completely removed from the SIMM -- in that case, the verification
still passes for some reason. I'm still debugging this one. Maybe the
data I had just written is still essentially on the bus because of the
floating pins and it reads it too fast? Maybe turning on pull-ups would
help with that?
2012-09-30 14:41:22 -07:00
Doug Brown
ff1f213b6f
Fixed maximum chip size allowed by firmware for compatibility with new
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8 MB SIMM
2012-09-14 18:13:19 -07:00
Doug Brown
7acb3ffcc3
Added support for (untested yet) 8 MB ROM SIMM with chips that expect a
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slightly different programming protocol.
2012-09-02 15:56:49 -07:00
Doug Brown
533813e949
Added LED toggle to write/read modes.
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Read is so fast that you can't even see the blinking, but oh well.
I also added an "led.h" header file that I should have done long ago.
2012-05-27 15:41:16 -07:00
Doug Brown
4b2533b69f
Added GPL license text file.
2012-05-25 22:41:15 -07:00
Doug Brown
145487d388
Added GPL header to all of my source files.
2012-05-25 20:21:04 -07:00
Doug Brown
ec2237ee21
Updated to LUFA 120219 (with later CDC deadlock patch too)
2012-05-25 19:20:38 -07:00
Doug Brown
e9da0905f0
Changed USB vendor/product IDs to use the ones I got.
2012-05-21 19:52:49 -07:00
Doug Brown
40cc81446a
Added one-second delay when switching between programmer and bootloader.
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Just makes me feel better to ensure the "OK" confirmation arrives at the
computer.
2012-05-19 23:07:22 -07:00
Doug Brown
7d1888dab8
Added provisions to communication protocol for specifying readback size.
2012-05-19 22:58:17 -07:00
Doug Brown
6f24f97df5
Got rid of a few magic numbers, cleaned up more code
2012-05-13 17:48:35 -07:00
Doug Brown
d0b50e15c9
Removed old dead code from external_mem.c
2012-05-13 17:06:57 -07:00
Doug Brown
f41d8f193a
Electrical status "OK" reply is now sent immediately. Before, it was
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being buffered, so we didn't get any immediate feedback until the
entire test was finished.
2012-05-13 09:40:04 -07:00
Doug Brown
522ded0973
Added .bin file generation for firmware upload
2012-03-04 17:28:15 -08:00
Doug Brown
c681547026
Fixed bug that screwed up reading after doing an electrical test.
2012-03-04 12:03:02 -08:00
Doug Brown
7f69cb476d
Tried to do some better commenting in usb_serial.c, also tried to do a better job of documenting the protocol in programmer_protocol.h
2012-01-26 20:42:42 -08:00
Doug Brown
147c2bfda3
Did some more splitting of responsibilities in the code
2011-12-26 15:02:39 -08:00
Doug Brown
e8999cfc54
Moved the programmer protocol to a different file in preparation for sharing it across all the various programs (bootloader, programmer, control program)
2011-12-26 11:31:45 -08:00
Doug Brown
258fb187ad
Added extra commands for moving back and forth between the bootloader and the actual program.
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Disabled the flash erase capability on the main program while I'm working on the bootloader...
2011-12-24 20:09:39 -08:00
Doug Brown
035e7cce28
Updated fusebits to prepare for bootloader.
2011-12-20 21:50:14 -08:00
Doug Brown
e38269f879
Optimized the SIMM electrical test, fixed a few small bugs I had introduced in the previous commit. Added comments where necessary. Seems to work great now.
2011-12-18 14:55:08 -08:00
Doug Brown
a1ca591d60
The same short is never repeated twice with the same 2 pins now. However -- if there's a short between 1, 2, and 3 -- it will still show a short between 1 and 2, 1 and 3, and 2 and 3, even though that info is somewhat redundant. But the host software can iron all that out.
2011-12-18 14:18:49 -08:00
Doug Brown
9333b65cde
Fixed a tiny mistake -- forgot to say the name of one of my enums after the typedef.
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Finished making the electrical test work -- I had failed to realize that I have to ignore the ground shorts once they have been found -- otherwise they reappear against EVERY tested pin (because they are always low and I'm testing for low pins -- duh!). Anyway, it was showing way too many shorts, and that's why. Now I independently can find shorts between separate pins without getting flooded with the ground shorts too. Only thing that's missing is the VCC shorts, but I can't do that without pullups (to my knowledge)
2011-12-18 12:00:22 -08:00
Doug Brown
beae025d1a
Oops, I was counting too many errors
2011-12-18 10:19:57 -08:00
Doug Brown
9054aaff0f
Started implementing electrical test that tells what pins are shorted to what
2011-12-18 10:18:30 -08:00
Doug Brown
52d33e077f
Broke out the SPI read/write into a single routine. Less code repetition -- easier to read and smaller.
2011-12-17 13:43:12 -08:00
Doug Brown
540e04331a
Fixed the ordering of the chips -- I had the bytes reversed. Now, when I write/read a continuous stream of data, the bytes will correspond with the correct chips.
2011-12-17 11:18:56 -08:00
Doug Brown
b052bb62f8
Fixed a bug with how many bytes I was allowing to be written. It mostly works but it writes the chips in reverse...oops
2011-12-17 10:32:40 -08:00
Doug Brown
ca84a1d562
Kept working on the USB protocol
2011-12-16 20:13:34 -08:00
Doug Brown
4f0d1a894c
Optimized some of my routines and fixed a nasty, nasty bug that was causing the board to crash because of multiple things being outputs simultaneously.
2011-12-13 21:56:20 -08:00
Doug Brown
4adb0c4980
Started working on more optimizations, but something weird is happening and it's crashing...not sure why yet.
2011-12-11 21:48:26 -08:00
Doug Brown
1c07518ab0
Added electrical test option to my temporary command line.
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Also experimented with skipping the SPI -- I left my test code in there, commented out, in case I want to do some more speed testing.
2011-12-11 15:52:04 -08:00
Doug Brown
7099218bf1
Added some optimization to remove the 1us delay on the write pulse, but I'm not sure that it matters much.
2011-12-11 13:45:17 -08:00
Doug Brown
b4eb6c3ddc
Started getting writing working, as well as the ability to restrict to a specific set of chips to write to
2011-12-11 13:28:32 -08:00
Doug Brown
e0977a9339
Created read and write cycle functions, along with a block read function. I think this will look better...
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I also changed the port module so it doesn't needlessly update the data direction register over SPI if it's being told to set the same value it had before.
2011-12-11 10:12:22 -08:00
Doug Brown
f45cc2c4d6
Started writing more command handling
2011-12-11 08:35:53 -08:00
Doug Brown
651c3a4be7
Finished testing the new functions I made for chip identification. It works well
2011-12-10 18:57:17 -08:00
Doug Brown
8865d0c00f
I got the device identification working, and I'm in the middle of breaking it into its own set of functions for write cycles, read cycles, unlock sequence, etc.
2011-12-10 18:40:30 -08:00
Doug Brown
1540bcadd1
Tested reading the entire SIMM contents back to the computer (it works)
2011-12-10 13:53:43 -08:00
Doug Brown
7db22e08af
Fixed a few stupid bugs -- it's now reading data correctly.
2011-12-10 13:02:21 -08:00
Doug Brown
2bc61f41aa
Continued playing with USB serial stuff. I think it's working well now, but I'm running into problems reading from the SIMM, so I need to figure out why I'm not getting the data I expect.
2011-12-10 10:35:41 -08:00
Doug Brown
1db6834da4
Added LUFA into the project, right now just for some demo stuff.
2011-12-09 22:11:31 -08:00
