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Submitted by David Mosberger-Tang: 

patch #9320: fix TPI RESET in bitbang.c
* bitbang.c (bitbang_initialize): wait for 128 ms after deasserting
/RESET (per datasheet), and keep /RESET low during MOSI/MISO link check



git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1472 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Joerg Wunsch 2021-11-14 13:17:44 +00:00
parent 3d1b0ff308
commit 5e6a662e8a
3 changed files with 12 additions and 1 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2021-11-14 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
Submitted by David Mosberger-Tang:
patch #9320: fix TPI RESET in bitbang.c
* bitbang.c (bitbang_initialize): wait for 128 ms after deasserting
/RESET (per datasheet), and keep /RESET low during MOSI/MISO link check
2021-11-12 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
Submitted by Jon Thacker:

1
NEWS
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@ -106,6 +106,7 @@ Current:
patch #8957: Allow reading prodsig memory from stk500v2 on xmega devices
patch #9110: Let reserved fuse bits to be read as *don't care*
patch #9253: Fix for giving terminal_mode commands more than 20 arguments
patch #9320: fix TPI RESET in bitbang.c
* Internals:
- New avrdude.conf keyword "family_id", used to verify SIB attributes

5
bitbang.c
View File

@ -542,7 +542,10 @@ int bitbang_initialize(PROGRAMMER * pgm, AVRPART * p)
/* bring RESET high first */
pgm->setpin(pgm, PIN_AVR_RESET, 1);
usleep(1000);
usleep(128000); /* wait t_TOUT (32-128ms) */
/* RESET must be LOW in case the existing code is driving the TPI pins: */
pgm->setpin(pgm, PIN_AVR_RESET, 0);
avrdude_message(MSG_NOTICE2, "doing MOSI-MISO link check\n");