Wire: allow scanning bus via beginTransmission-endTransmission

facchinm · facchinm · commit 3972d36c184a · 2015-09-10T16:40:33.000+02:00
diff --git a/libraries/Wire/Wire.cpp b/libraries/Wire/Wire.cpp
@@ -109,12 +109,6 @@ uint8_t TwoWire::endTransmission(bool stopBit)
 {
   transmissionBegun = false ;
 
-  // Check if there are data to send
-  if ( txBuffer.available() == 0)
-  {
-    return 4 ;
-  }
-
   // Start I2C transmission
   if ( !sercom->startTransmissionWIRE( txAddress, WIRE_WRITE_FLAG ) )
   {

Original file line number	Diff line number	Diff line change
`@@ -109,12 +109,6 @@ uint8_t TwoWire::endTransmission(bool stopBit)`
`109`	`109`	`{`
`110`	`110`	`transmissionBegun = false ;`
`111`	`111`
`112`		`- // Check if there are data to send`
`113`		`- if ( txBuffer.available() == 0)`
`114`		`- {`
`115`		`- return 4 ;`
`116`		`- }`
`117`		`-`
`118`	`112`	`// Start I2C transmission`
`119`	`113`	`if ( !sercom->startTransmissionWIRE( txAddress, WIRE_WRITE_FLAG ) )`
`120`	`114`	`{`