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avrftdi_tpi.c: Remove set_pin() to set MOSI high 

This is not necessary any more, because the "frame" ends in logic 1, so
the pin is high anyway and the MPSSE keeps the pin value as long as it
is idle. Setting the pin low would cause the TPI physical layer in the
AVR part to detect a collision.

git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1159 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
hweisbach 2013-05-03 13:01:20 +00:00
parent 779538b9af
commit a2ab9c6039
2 changed files with 1 additions and 4 deletions
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1
ChangeLog
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@ -4,6 +4,7 @@
avrftdi_log. avrftdi_log.
* avrftdi_tpi.c: Do all I/O in terms of pgm->cmd_tpi()-calls instead of * avrftdi_tpi.c: Do all I/O in terms of pgm->cmd_tpi()-calls instead of
avrftdi_tpi_[read,write]_byte(). avrftdi_tpi_[read,write]_byte().
Remove unnecessary set_pin call to set MOSI high, speeds up I/O.
2013-05-02 Hannes Weisbach <hannes_weisbach@gmx.net> 2013-05-02 Hannes Weisbach <hannes_weisbach@gmx.net>

4
avrftdi_tpi.c
View File

@ -181,9 +181,6 @@ avrftdi_tpi_read_byte(PROGRAMMER * pgm, unsigned char * byte)
unsigned char buffer[4]; unsigned char buffer[4];
/* set it high, so the TPI won't detect we're driving the line */
to_pdata(pgm)->set_pin(pgm, PIN_AVR_MOSI, ON);
buffer[0] = MPSSE_DO_READ | MPSSE_LSB; buffer[0] = MPSSE_DO_READ | MPSSE_LSB;
buffer[1] = (bytes-1) & 0xff; buffer[1] = (bytes-1) & 0xff;
buffer[2] = ((bytes-1) >> 8) & 0xff; buffer[2] = ((bytes-1) >> 8) & 0xff;
@ -223,7 +220,6 @@ avrftdi_tpi_program_enable(PROGRAMMER * pgm, AVRPART * p)
{ {
int retry; int retry;
int err; int err;
int i;
unsigned char cmd[2]; unsigned char cmd[2];
unsigned char response; unsigned char response;