Add alternate names for cape-universal usage

* cape-universal prefixes the names with 0 for single digit pin numbers
* throw error on missing pinmux file

Author: jadonk

src/bone.js

@@ -87,6 +87,7 @@ var pinIndex = [
         "mux": "gpmc_ad6",
         "eeprom": 26,
         "key": "P8_3",
+        "universalName": "P8_03",
         "muxRegOffset": "0x018",
         "options": [
             "gpmc_ad6",
@@ -105,6 +106,7 @@ var pinIndex = [
         "mux": "gpmc_ad7",
         "eeprom": 27,
         "key": "P8_4",
+        "universalName": "P8_04",
         "muxRegOffset": "0x01c",
         "options": [
             "gpmc_ad7",
@@ -123,6 +125,7 @@ var pinIndex = [
         "mux": "gpmc_ad2",
         "eeprom": 22,
         "key": "P8_5",
+        "universalName": "P8_05",
         "muxRegOffset": "0x008",
         "options": [
             "gpmc_ad2",
@@ -141,6 +144,7 @@ var pinIndex = [
         "mux": "gpmc_ad3",
         "eeprom": 23,
         "key": "P8_6",
+        "universalName": "P8_06",
         "muxRegOffset": "0x00c",
         "options": [
             "gpmc_ad3",
@@ -159,6 +163,7 @@ var pinIndex = [
         "mux": "gpmc_advn_ale",
         "eeprom": 41,
         "key": "P8_7",
+        "universalName": "P8_07",
         "muxRegOffset": "0x090",
         "options": [
             "gpmc_advn_ale",
@@ -177,6 +182,7 @@ var pinIndex = [
         "mux": "gpmc_oen_ren",
         "eeprom": 44,
         "key": "P8_8",
+        "universalName": "P8_08",
         "muxRegOffset": "0x094",
         "options": [
             "gpmc_oen_ren",
@@ -195,6 +201,7 @@ var pinIndex = [
         "mux": "gpmc_ben0_cle",
         "eeprom": 42,
         "key": "P8_9",
+        "universalName": "P8_09",
         "muxRegOffset": "0x09c",
         "options": [
             "gpmc_ben0_cle",

src/hw_universal.js

@@ -71,8 +71,10 @@ exports.readPinMux = function(pin, mode, callback) {
 
 exports.setPinMode = function(pin, pinData, template, resp, callback) {
     if(debug) winston.debug('hw.setPinMode(' + [pin.key, pinData, template, JSON.stringify(resp)] + ');');
-    var p = pin.key + "_pinmux"
+    var p = pin.key + "_pinmux";
+    if(pin.universalName) p = pin.universalName + "_pinmux";
     var pinmux = my.find_sysfsFile(p, my.is_ocp(), p + '.');
+    if(!pinmux) { throw p + " was not found under " + my.is_ocp(); }
     if((pinData & 7) == 7) {
         gpioFile[pin.key] = '/sys/class/gpio/gpio' + pin.gpio + '/value';
         fs.writeFileSync(pinmux+"/state", 'gpio');