Modify write function.

SFE-Brudnerd · SFE-Brudnerd · commit 6d6d424d4c56 · 2025-03-26T09:52:33.000-06:00
Compares length written vs requested length to cover more cases such as writing over USB. Returns underread instead of fail.
diff --git a/src/sfTkArdUART.cpp b/src/sfTkArdUART.cpp
@@ -77,7 +77,7 @@ sfTkError_t sfTkArdUART::write(const uint8_t *data, size_t len)
     if(!_hwSerial)
         return ksfTkErrSerialNotInit;
 
-    return (_hwSerial->write(data, len) ? ksfTkErrOk : ksfTkErrFail);
+    return (_hwSerial->write(data, len) == len ? ksfTkErrOk : ksfTkErrSerialUnderRead);
 }
 
 sfTkError_t sfTkArdUART::write(const uint8_t data)

Original file line number	Diff line number	Diff line change
`@@ -77,7 +77,7 @@ sfTkError_t sfTkArdUART::write(const uint8_t *data, size_t len)`
`77`	`77`	`if(!_hwSerial)`
`78`	`78`	`return ksfTkErrSerialNotInit;`
`79`	`79`
`80`		`- return (_hwSerial->write(data, len) ? ksfTkErrOk : ksfTkErrFail);`
	`80`	`+ return (_hwSerial->write(data, len) == len ? ksfTkErrOk : ksfTkErrSerialUnderRead);`
`81`	`81`	`}`
`82`	`82`
`83`	`83`	`sfTkError_t sfTkArdUART::write(const uint8_t data)`