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clock stretch fix done right (#5363)

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This commit is contained in:
Matej Sychra 2018-11-22 17:21:21 +01:00 committed by Develo
parent 74ca42f829
commit aa22c07312
1 changed files with 2 additions and 0 deletions
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2
cores/esp8266/core_esp8266_si2c.c
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@ -267,6 +267,7 @@ unsigned char twi_writeTo(unsigned char address, unsigned char * buf, unsigned i
SCL_LOW(); SCL_LOW();
twi_delay(twi_dcount); twi_delay(twi_dcount);
SCL_HIGH(); SCL_HIGH();
unsigned int t=0; while(SCL_READ()==0 && (t++)<twi_clockStretchLimit); // twi_clockStretchLimit
twi_delay(twi_dcount); twi_delay(twi_dcount);
} }
return 0; return 0;
@ -287,6 +288,7 @@ unsigned char twi_readFrom(unsigned char address, unsigned char* buf, unsigned i
SCL_LOW(); SCL_LOW();
twi_delay(twi_dcount); twi_delay(twi_dcount);
SCL_HIGH(); SCL_HIGH();
unsigned int t=0; while(SCL_READ()==0 && (t++)<twi_clockStretchLimit); // twi_clockStretchLimit
twi_delay(twi_dcount); twi_delay(twi_dcount);
} }
return 0; return 0;