fix spi datamask (word/int bug)

owennewo · owennewo · commit 7b32eca43a36 · 2020-10-22T23:16:23.000+01:00
diff --git a/src/MagneticSensorSPI.cpp b/src/MagneticSensorSPI.cpp
@@ -233,7 +233,7 @@ word MagneticSensorSPI::read(word angle_register){
   
   register_value = register_value >> (1 + data_start_bit - bit_resolution);  //this should shift data to the rightmost bits of the word
 
-  const static word data_mask = ~(0 >> (16 - bit_resolution));
+  const static word data_mask = 0xFFFF >> (16 - bit_resolution);
 
 	return register_value & data_mask;  // Return the data, stripping the non data (e.g parity) bits
 }

Original file line number	Diff line number	Diff line change
`@@ -233,7 +233,7 @@ word MagneticSensorSPI::read(word angle_register){`
`233`	`233`
`234`	`234`	`register_value = register_value >> (1 + data_start_bit - bit_resolution); //this should shift data to the rightmost bits of the word`
`235`	`235`
`236`		`- const static word data_mask = ~(0 >> (16 - bit_resolution));`
	`236`	`+ const static word data_mask = 0xFFFF >> (16 - bit_resolution);`
`237`	`237`
`238`	`238`	`return register_value & data_mask; // Return the data, stripping the non data (e.g parity) bits`
`239`	`239`	`}`