Slawek Komarowski
/
DS1820
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Revision 7:58b61681818f, committed 2014-04-08
- Comitter:
- Sissors
- Date:
- Tue Apr 08 09:59:18 2014 +0000
- Parent:
- 6:abfdd851218a
- Commit message:
- Added define for invalid conversion
Changed in this revision
| DS1820.cpp | Show annotated file Show diff for this revision Revisions of this file |
| DS1820.h | Show annotated file Show diff for this revision Revisions of this file |
--- a/DS1820.cpp Wed Apr 02 19:10:34 2014 +0000
+++ b/DS1820.cpp Tue Apr 08 09:59:18 2014 +0000
@@ -353,7 +353,7 @@
read_RAM();
if (RAM_checksum_error())
// Indicate we got a CRC error
- answer = -1000.0;
+ answer = invalid_conversion;
else {
reading = (RAM[1] << 8) + RAM[0];
if (reading & 0x8000) { // negative degrees C
--- a/DS1820.h Wed Apr 02 19:10:34 2014 +0000
+++ b/DS1820.h Tue Apr 08 09:59:18 2014 +0000
@@ -54,6 +54,10 @@
enum devices{
this_device, // command applies to only this device
all_devices }; // command applies to all devices
+
+ enum {
+ invalid_conversion = -1000
+ };
/** Create a probe object connected to the specified pins
*
@@ -91,7 +95,7 @@
* probe to read its RAM, do CRC check and convert temperature on the LPC1768.
*
* @param scale, may be either 'c' or 'f'
- * @returns temperature for that scale, or -1000.0 if CRC error detected.
+ * @returns temperature for that scale, or DS1820::invalid_conversion (-1000) if CRC error detected.
*/
float temperature(char scale='c');