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Submitted by David Mosberger-Tang:

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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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5
bitbang.c
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@@ -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");