avoid float division 2

hathach · hathach · commit 7941541436ca · 2026-01-23T17:42:45.000+07:00
diff --git a/cores/arduino/SERCOM.cpp b/cores/arduino/SERCOM.cpp
@@ -488,7 +488,7 @@ void SERCOM::initMasterWIRE( uint32_t baudrate )
     sercom->I2CM.BAUD.bit.HSBAUD = freqRef / (2 * baudrate) - 1;
   else
     sercom->I2CM.BAUD.bit.BAUD = freqRef / (2 * baudrate) - 5 -
-      (freqRef/2000000ul * WIRE_RISE_TIME_NANOSECONDS) / 1000;
+      (freqRef/1000000ul * WIRE_RISE_TIME_NANOSECONDS) / 2000;
 }
 
 void SERCOM::prepareNackBitWIRE( void )

Original file line number	Diff line number	Diff line change
`@@ -488,7 +488,7 @@ void SERCOM::initMasterWIRE( uint32_t baudrate )`
`488`	`488`	`sercom->I2CM.BAUD.bit.HSBAUD = freqRef / (2 * baudrate) - 1;`
`489`	`489`	`else`
`490`	`490`	`sercom->I2CM.BAUD.bit.BAUD = freqRef / (2 * baudrate) - 5 -`
`491`		`- (freqRef/2000000ul * WIRE_RISE_TIME_NANOSECONDS) / 1000;`
	`491`	`+ (freqRef/1000000ul * WIRE_RISE_TIME_NANOSECONDS) / 2000;`
`492`	`492`	`}`
`493`	`493`
`494`	`494`	`void SERCOM::prepareNackBitWIRE( void )`