ACK is actually 0

ficeto · ficeto · commit 735277fff97b · 2015-05-03T20:35:01.000+03:00
diff --git a/cores/esp8266/core_esp8266_si2c.c b/cores/esp8266/core_esp8266_si2c.c
@@ -131,7 +131,7 @@ static bool twi_write_byte(unsigned char byte) {
     twi_write_bit(byte & 0x80);
     byte <<= 1;
   }
-  return twi_read_bit();//NACK/ACK
+  return !twi_read_bit();//NACK/ACK
 }
 
 static unsigned char twi_read_byte(bool nack) {

Original file line number	Diff line number	Diff line change
`@@ -131,7 +131,7 @@ static bool twi_write_byte(unsigned char byte) {`
`131`	`131`	`twi_write_bit(byte & 0x80);`
`132`	`132`	`byte <<= 1;`
`133`	`133`	`}`
`134`		`- return twi_read_bit();//NACK/ACK`
	`134`	`+ return !twi_read_bit();//NACK/ACK`
`135`	`135`	`}`
`136`	`136`
`137`	`137`	`static unsigned char twi_read_byte(bool nack) {`