Merge pull request doceme#109 from JonathonReinhart/108-error-return-…

…without-exception-set Set IOError in __spidev_set_mode if readback differs
tim-seoss · Nov 3, 2022 · 950f36a · 950f36a
2 parents a5d82b8 + d8725c4
commit 950f36a
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/spidev_module.c b/spidev_module.c
@@ -902,6 +902,9 @@ static int __spidev_set_mode( int fd, __u8 mode) {
 		return -1;
 	}
 	if (test != mode) {
+		PyErr_Format(PyExc_IOError,
+			"Attempted to set mode 0x%x but mode 0x%x returned",
+			(unsigned int)mode, (unsigned int)test);
 		return -1;
 	}
 	return 0;