Merge pull request #90 from arduino/88-wire-baud-overflow

facchinm · web-flow · commit a40389d2e159 · 2020-12-09T09:44:45.000+01:00
Bugfix: wrong default I2C baud rate was set for Arduino Nano Every
diff --git a/libraries/Wire/src/utility/twi.c b/libraries/Wire/src/utility/twi.c
@@ -201,7 +201,7 @@ void TWI_MasterSetBaud(uint32_t frequency){
 		t_rise = 1000;
 	}
 	
-	uint32_t baud = ((F_CPU_CORRECTED/frequency) - (((F_CPU_CORRECTED*t_rise)/1000)/1000)/1000 - 10)/2;
+	uint32_t baud = (F_CPU_CORRECTED / frequency - F_CPU_CORRECTED / 1000 / 1000 * t_rise / 1000 - 10) / 2;
 	TWI0.MBAUD = (uint8_t)baud;
 
 }

Original file line number	Diff line number	Diff line change
`@@ -201,7 +201,7 @@ void TWI_MasterSetBaud(uint32_t frequency){`
`201`	`201`	`t_rise = 1000;`
`202`	`202`	`}`
`203`	`203`
`204`		`- uint32_t baud = ((F_CPU_CORRECTED/frequency) - (((F_CPU_CORRECTED*t_rise)/1000)/1000)/1000 - 10)/2;`
	`204`	`+ uint32_t baud = (F_CPU_CORRECTED / frequency - F_CPU_CORRECTED / 1000 / 1000 * t_rise / 1000 - 10) / 2;`
`205`	`205`	`TWI0.MBAUD = (uint8_t)baud;`
`206`	`206`
`207`	`207`	`}`