Re: [avrdude-dev] Problem with TPI and "serbb" mode (giving up)

[Wayne Holder]

Well, I'm going to throw in the towel on this one.  I've tried just about
everything I can think of to try and diagnose and fix the problem, but
everything has come up short.  Most recently I've tried:

1. Using another input pin, such as DCD, instead of CTS as the MISO pin ---
No change
2. Adding delays up to a full second to wait before reading the MISO pin
--- No change
3. Unsoldering the FTDI FT232R chip and replacing it with one ordered from
Mouser to make sure I wasn't using a counterfeit -- No change
4. Removing old FTDI drivers, or 3rd party drivers that might interfere --
No change

I was really hoping I could get this to work, as I think being able to use
an inexpensive programming option like this would make a nice addition to
my ATTiny10IDE <https://github.com/wholder/ATTiny10IDE> project.  But,
alas, I've already spent much more time on this than it was probably
worth.  However, I'm very grateful for all the suggestions members of this
group have offered to help me investigate this.  Thanks to everyone!

My best guess on what's wrong is that, for some unknown reason, the
serbb_getpin() function in in serbb_posix.c is not working properly on my
system, as this is the level at which things seem to stop working.  Perhaps
this is due to some other factor, such a problem in the version
of macOS (10.14.2 (18C54) "Mojave") I'm using, or some other external
factor.  I'm just not sure.

As a final note, if anyone has managed to use AVRDUDE 6.3 to program an
ATTiny10 using macOS Mojave, I've love to hear from you.  Or, if anyone
wants to try to reproduce my results, please contact me directly by email
and I'll be happy to send you an ATTiny10 soldered onto a breakout board
that you can use to try this.

Wayne

On Tue, Mar 19, 2019 at 2:41 PM Wayne Holder <address@hidden> wrote:

> I'm trying to use AVRDUDE on macOS 0.14.2 to communicate with an ATTiny10
> that's connected an FTDI breakout board like this:
>
> TXD  --[1K]---+
>               |   +----------------------+
> CTS  ---------+---| TPI DATA (1)   RESET | ------+
> GND  -------------| GND              VCC | ---+  |
> DTR  -------------| TPI CLK           NC |    |  |
>                   +----------------------+    |  |
>                                               |  |
> VCC  -----------------------------------------+  |
>                                                  |
> RTS  --------------------------------------------+
>
> Note: adapted from http://irq5.io/2010/07/15/programming-the-attiny10/
>
> and using this as the definition for the programmer:
>
> programmer
>   id    = "ftdiprog";
>   desc  = "FTDI serial port banging, reset=rts sck=dtr mosi=txd miso=cts";
>   type  = "serbb";
>   miso  = ~8;
>   reset = ~7;
>   sck   = ~4;
>   mosi  = ~3;
> ;
>
> Note: passed using the - C + switch in file ftdiprog.conf
>
> But, when I use the following invocation (paths removed for brevity)  to
> try and read out the device signature value:
>
> avrdude -v -P /dev/cu.usbserial-A50285BI -C +ftdiprog.conf -c ftdiprog -p
> t10 -U signature:r:sig.hex:h
>
> It prints the following error (full, verbose response at end of this
> message):
>
> MOSI->MISO 0 failed
>
> and this has me stumped.  Is this a bug, or am I doing something wrong?
> Also, is there any more information about how to properly use AVRDUDE and
> the TPI protocol?  This information I've found online is either rather
> dated, or contradicts or other information I've read.
>
> Thanks in advance for any help offered,
>
> Wayne
>
> --full response--
>
> avrdude: Version 6.3, compiled on Sep 21 2018 at 19:15:33
>
>          Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
>
>          Copyright (c) 2007-2014 Joerg Wunsch
>
>
>          System wide configuration file is
> "/usr/local/Cellar/avrdude/6.3_1/etc/avrdude.conf"
>
>          User configuration file is "/Users/wholder/.avrduderc"
>
>          User configuration file does not exist or is not a regular file,
> skipping
>
>          Additional configuration file is
> "/var/folders/mt/7rrh06nw8xj05b0052g526300000gn/T/avr-toolchain/etc/ftdiprog.conf"
>
>
>          Using Port                    : /dev/cu.usbserial-A50285BI
>
>          Using Programmer              : ftdiprog
>
>          AVR Part                      : ATtiny10
>
>          Chip Erase delay              : 0 us
>
>          PAGEL                         : P00
>
>          BS2                           : P00
>
>          RESET disposition             : dedicated
>
>          RETRY pulse                   : SCK
>
>          serial program mode           : yes
>
>          parallel program mode         : yes
>
>          Timeout                       : 0
>
>          StabDelay                     : 0
>
>          CmdexeDelay                   : 0
>
>          SyncLoops                     : 0
>
>          ByteDelay                     : 0
>
>          PollIndex                     : 0
>
>          PollValue                     : 0x00
>
>          Memory Detail                 :
>
>
>                                   Block Poll               Page
>             Polled
>
>            Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages
> MinW  MaxW   ReadBack
>
>            ----------- ---- ----- ----- ---- ------ ------ ---- ------
> ----- ----- ---------
>
>            signature      0     0     0    0 no          3   16      0
> 0     0 0x00 0x00
>
>            fuse           0     0     4    0 no          1   16      0
> 0     0 0x00 0x00
>
>            calibration    0     0     0    0 no          1   16      0
> 0     0 0x00 0x00
>
>            lockbits       0     0     0    0 no          1   16      0
> 0     0 0x00 0x00
>
>            flash          0     0   128    0 no       1024   16      0
> 0     0 0x00 0x00
>
>
>          Programmer Type : SERBB
>
>          Description     : design ftdi adatper, reset=dtr sck=tx mosi=rts
> miso=cts
>
>
> MOSI->MISO 0 failed
>
> avrdude: initialization failed, rc=-1
>
>          Double check connections and try again, or use -F to override
>
>          this check.
>
>
>
> avrdude done.  Thank you.
>
>
>