From: Ian Abbott <abbotti@mev.co.uk>
Date: Mon, 15 Oct 2012 15:18:47 +0000 (+0100)
Subject: comedi_board_info: improve display of external ranges.
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=e185d974baf369399ffdbe8835e38f411951d1f9;p=comedilib.git

comedi_board_info: improve display of external ranges.

The units for a range with internal unit code `RF_EXTERNAL | UNIT_volt` is currently
displayed as " (unknown unit 256)", for example an external bipolar
voltage range -1 to 1 is displayed as:

[-1 (unknown unit 256),1 (unknown unit 256)]

Change it to be displayed as:

[-1*EXT V,1*EXT V]
---

diff --git a/comedi_board_info/comedi_board_info.c b/comedi_board_info/comedi_board_info.c
index 26c5426..ef058f1 100644
--- a/comedi_board_info/comedi_board_info.c
+++ b/comedi_board_info/comedi_board_info.c
@@ -78,11 +78,15 @@ void explain_subdevice_flags(char* padding,unsigned int sf) {
 }
 
 void unit_to_desc(char *udesc,int unit) {
-	switch(unit) {
-	case UNIT_volt: strcpy(udesc," V"); break;
-	case UNIT_mA: strcpy(udesc," mA"); break;
-	case UNIT_none: strcpy(udesc,""); break; 
-	default: sprintf(udesc," (unknown unit %d)",
+	if ((unit & RF_EXTERNAL) != 0)
+		strcpy(udesc, "*EXT");
+	else
+		udesc[0] = '\0';
+	switch(RF_UNIT(unit)) {
+	case UNIT_volt: strcat(udesc," V"); break;
+	case UNIT_mA: strcat(udesc," mA"); break;
+	case UNIT_none: strcat(udesc,""); break; 
+	default: sprintf(udesc + strlen(udesc)," (unknown unit %d)",
 			 unit);
 	}
 }