8000 Double I2C read in one transaction skips a clock pulse (#5528) by TD-er · Pull Request #6654 · esp8266/Arduino · GitHub
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Double I2C read in one transaction skips a clock pulse (#5528) #6654

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Merged
merged 9 commits into from
Oct 27, 2019
Merged

Double I2C read in one transaction skips a clock pulse (#5528) #6654

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63518a0
Double I2C read in one transaction skips a clock pulse (#5528)
TD-er Oct 19, 2019
8357a8c
Merge branch 'master' into bugfix/issue5528_I2C_3rd
earlephilhower Oct 19, 2019
aac1295
[I2C] Restore clock stretch functionality during transfer
TD-er Oct 26, 2019
42515d7
Merge remote-tracking branch 'origin/bugfix/issue5528_I2C_3rd' into b…
TD-er Oct 26, 2019
3c2d332
Merge branch 'master' into bugfix/issue5528_I2C_3rd
earlephilhower Oct 26, 2019
254810f
Merge branch 'master' into bugfix/issue5528_I2C_3rd
earlephilhower Oct 26, 2019
702361c
[I2C] Move duplicated clock stretch call to twi_scl_valley function
TD-er Oct 26, 2019
fa9461f
Merge remote-tracking branch 'origin/bugfix/issue5528_I2C_3rd' into b…
TD-er Oct 26, 2019
5a3faec
Merge branch 'master' into bugfix/issue5528_I2C_3rd
earlephilhower Oct 26, 2019
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[I2C] Restore clock stretch functionality during transfer 
As requested here: https://github.com/esp8266/Arduino/pull/6654/files/8357a8c644244096cce1df30acd660c35d24a0e4#r339310509
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@TD-er
TD-er committed Oct 26, 2019
commit aac129518b9c08b924e8ea7c01229646f8812837
2 changes: 2 additions & 0 deletions cores/esp8266/core_esp8266_si2c.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -399,6 +399,7 @@ unsigned char Twi::writeTo(unsigned char address, unsigned char * buf, unsigned
while (!SDA_READ() && (i++) < 10)
{
twi_scl_valley();
WAIT_CLOCK_STRETCH();
busywait(twi_dcount);
}
return 0;
Expand Down Expand Up @@ -439,6 +440,7 @@ unsigned char Twi::readFrom(unsigned char address, unsigned char* buf, unsigned
while (!SDA_READ() && (i++) < 10)
{
twi_scl_valley();
WAIT_CLOCK_STRETCH();
busywait(twi_dcount);
}
return 0;
Expand Down
0