8000 i2c_clock_stretching_fix by suculent · Pull Request #5362 · esp8266/Arduino · GitHub
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i2c_clock_stretching_fix #5362

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i2c_clock_stretching_fix #5362

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a1b60e0
added proposal for I2C peer-to-peer communication (master/slave) exam…
Nov 21, 2018
ace0b37
fixes with regards to Travis CI help
Nov 21, 2018
474ba24
i2c_clock_stretching_fix
Nov 21, 2018
ba488f7
oh, the warnings. now the goes to default but address needs to be set…
Nov 21, 2018
716f3a0
proposing new init method with pins and address, because pins() is de…
Nov 21, 2018
3bed05e
Merge remote-tracking branch 'fork/i2c_master_slave_example' into i2c…
Nov 21, 2018
0bc4963
Merge branch 'i2c_master_slave_example' into i2c_clock_stretch_fix
Nov 21, 2018
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i2c_clock_stretching_fix
  • Loading branch information
Matěj Sychra committed Nov 21, 2018
commit 474ba24ce86f12d560db02a5dfd27977cde83209
2 changes: 2 additions & 0 deletions cores/esp8266/core_esp8266_si2c.c
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Original file line number Diff line number Diff line change
Expand Up @@ -267,6 +267,7 @@ unsigned char twi_writeTo(unsigned char address, unsigned char * buf, unsigned i
SCL_LOW();
twi_delay(twi_dcount);
SCL_HIGH();
unsigned int t=0; while(SCL_READ()==0 && (t++)<twi_clockStretchLimit); // twi_clockStretchLimit
twi_delay(twi_dcount);
}
return 0;
Expand All @@ -287,6 +288,7 @@ unsigned char twi_readFrom(unsigned char address, unsigned char* buf, unsigned i
SCL_LOW();
twi_delay(twi_dcount);
SCL_HIGH();
unsigned int t=0; while(SCL_READ()==0 && (t++)<twi_clockStretchLimit); // Clock stretching
twi_delay(twi_dcount);
}
return 0;
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