Noaa bbb pru cape edit

Hardware/Cape/POPSCape_notes.md

@@ -0,0 +1,21 @@
+#Beagle Bone Black (BBB) POPS Cape Notes
+
+<p>This cape is intended to be a part of a stack of printed circuit boards that comprise 
+of the POPS instrument.  As you might expect, the cape plugs into the BBB and has M-F 
+pass through connectors.  As currently used, the cape then plugs into a �base plate� that
+has some signal conditioning, and the rest of the instrument attaches to the base plate.  
+Some signals are passed via the usual P8-P9 connectors, while other signals are passed to
+the base plate via JP1, a 14 pin connector of similar style as P8 and P9.  If a base 
+plate is not to be used, these signals are broken out on other connectors.
+
+<p>The cape is powered by a signal labeled �V-Batt�.  This comes in via J1 pins 3 and 4,
+or if a baseplate is not used, via the connector named �BATTERY_IN�.  This voltage is 
+scaled and monitored via A/D channel AI6 pin P9.35.  To turn on the cape (which powers 
+the BBB) the �ON� button is pressed.  There is an ON button located on the cape, and can 
+also have one on the baseplate using pin 12 of JP1.  The ON button turns on FET T3 which 
+supplies +12V to the cape and to the base plate via J1 pins 5 and 6.  On the cape is a 5V 
+regulator which then supplies +5V to the BBB via P9 pins P9.5 and P9.6.  The BBB then 
+regulates the 5V down to +3.3V and supplies it back to the cape  via pins P9.3 and P9.4.  
+Among other things, this 3.3V is then used to hold on FET T3 so the system remains powered 
+up after the ON button is released.  When the BBB shuts down, 3.3V is removed from P9 and 
+if the ON button is not pressed, power is removed from the rest of the system.

NOAA-BBB_PRU_DAQ_Cape_Setup.md

@@ -127,13 +127,10 @@ If all is right, this will build both PRU binaries and the pops executable.
 Attach the NOAA_BBB_PRU_DAQ cape (with the clock battery installed) to the BeagleBone black with the 
 Beaglebone Black powered down and disconnected from the laptop.  Standoffs 46-pin will be required on 
 P8 and P9 as the cape is designed to mount on both sides.  The microcomputer system (BeagleBone Black 
-and NOAA cape) can be powered in two ways. If the Beaglebone black is only connected to the cape (without 
+and NOAA cape) can be powered in two ways.  If the Beaglebone black is only connected to the cape (without 
 using the baseplate) 9-18 V can be applies to "BATTERY IN" or the JP1 baseplate interface connector. 
-This can be done with a power supply or battery.
-
-DO NOT USE THE 5V INPUT AFTER THIS POINT (P1 on the BeagleBone Black), as damage may occur to the cape or the BeagleBone Black.  
-
-After the system is powered up, the connection to the 
+This can be done with a power supply or battery.  DO NOT USE THE 5V INPUT AFTER THIS POINT, as damage may 
+occur to the cape or the BeagleBone Black.  After the system is powered up, the connection to the 
 BeagleBone Black can be either through the USB or ethernet ports.
 
 **Set the time.**   The time is set by first updating the time from the internet and then write 

README.md

@@ -1,6 +1,8 @@
 ![pops_bbb_noaa](https://cloud.githubusercontent.com/assets/23479476/21242758/babe1360-c30d-11e6-89c9-b6001e482500.JPG)
 
-# NOAA_BBB_PRU_DAQ_Cape
+
+# NOAA BeagleBone Black (BBB) PRU DAQ Cape
+==========================================
 
 <p>The NOAA BeagleBone Black PRU and DAQ Cape was developed for the NOAA Printed Optical Particle 
 Spectrometer (POPS) instrument that is used to make balloon and aircraft particle concentration measurements. The 
@@ -9,6 +11,8 @@ more information. This cape and software has been patented and is being presente
 free for public download, modification and use. The programs that are presented are for the POPS instrument, and are
 meant as an example and guide for developing other applications.
 
+
+=======
 ##Cape Features:
 
 * A high-speed LVDT serial interface using a DS90C124 deserializer.  It connects via a SATA cable to an 
@@ -26,9 +30,8 @@ instrument's flow rate and laser power (0-5 V).
 
 * M24256 cape EEPROM.
 
-
-##Provided Information:
-
+=======
+##Provided Informaion
 * This README.md.
 
 * SOFTWARE DISCLAIMER.md:  This file is to be included with any code that is copied from this 
@@ -49,6 +52,7 @@ presented in this document as a table.
 
 * BOM as an Excel spreadsheet for the boards.
 
+
 ##Software and Examples:
 
 * build and build_dt:  Scripts to build the *.c and *.p files provided.