Add Ambient temperature

README.md

@@ -2,7 +2,7 @@
 
 Outputs current CPU temperature for OSX.
 
-## Usage 
+## Usage
 
 ### Compiling
 
@@ -37,20 +37,26 @@ clib install lavoiesl/osx-cpu-temp
 
 ### Options
 
- * `-C` Output temperature in Celsius (default).
- * `-F` Output temperature in Fahrenheit.
- * `-f` Output fan speed.
+* Output
+    * `-c` Display CPU temperature (Default).
+    * `-g` Display GPU temperature.
+    * `-a` Display ambient temperature.
+    * `-f` Display fan speeds.
+* Format
+    * `-C` Display temperatures in degrees Celsius (Default).
+    * `-F` Display temperatures in degrees Fahrenheit.
+    * `-T` Do not display the units for temperatures.
 
-## Maintainer 
+## Maintainer
 
 Sébastien Lavoie <[email protected]>
 
-### Source 
+### Source
 
-Apple System Management Control (SMC) Tool 
+Apple System Management Control (SMC) Tool
 Copyright (C) 2006
 
-### Inspiration 
+### Inspiration
 
  * https://www.eidac.de/smcfancontrol/
  * https://github.com/hholtmann/smcFanControl/tree/master/smc-command

smc.c

@@ -299,9 +299,10 @@ int main(int argc, char* argv[])
     bool cpu = false;
     bool fan = false;
     bool gpu = false;
+    bool amb = false;
 
     int c;
-    while ((c = getopt(argc, argv, "CFTcfgh?")) != -1) {
+    while ((c = getopt(argc, argv, "CFTcfgah?")) != -1) {
         switch (c) {
         case 'F':
         case 'C':
@@ -319,6 +320,9 @@ int main(int argc, char* argv[])
         case 'g':
             gpu = true;
             break;
+        case 'a':
+            amb = true;
+            break;
         case 'h':
         case '?':
             printf("usage: osx-cpu-temp <options>\n");
@@ -328,18 +332,19 @@ int main(int argc, char* argv[])
             printf("  -T  Do not display the units for temperatures.\n");
             printf("  -c  Display CPU temperature (Default).\n");
             printf("  -g  Display GPU temperature.\n");
+            printf("  -a  Display ambient temperature.\n");
             printf("  -f  Display fan speeds.\n");
             printf("  -h  Display this help.\n");
             printf("\nIf more than one of -c, -f, or -g are specified, titles will be added\n");
             return -1;
         }
     }
 
-    if (!fan && !gpu) {
+    if (!fan && !gpu && !amb) {
         cpu = true;
     }
 
-    bool show_title = fan + gpu + cpu > 1;
+    bool show_title = fan + gpu + cpu + amb > 1;
 
     SMCOpen();
 
@@ -349,6 +354,9 @@ int main(int argc, char* argv[])
     if (gpu) {
         readAndPrintTemperature("GPU: ", show_title, SMC_KEY_GPU_TEMP, scale, show_scale);
     }
+    if (amb) {
+        readAndPrintTemperature("Ambient: ", show_title, SMC_KEY_AMBIENT_TEMP, scale, show_scale);
+    }
     if (fan) {
         readAndPrintFanRPMs();
     }

smc.h

@@ -1,6 +1,6 @@
 /*
  * Apple System Management Control (SMC) Tool
- * Copyright (C) 2006 devnull 
+ * Copyright (C) 2006 devnull
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -40,6 +40,7 @@
 // key values
 #define SMC_KEY_CPU_TEMP "TC0P"
 #define SMC_KEY_GPU_TEMP "TG0P"
+#define SMC_KEY_AMBIENT_TEMP "TA0V"
 #define SMC_KEY_FAN0_RPM_CUR "F0Ac"
 
 typedef struct {