Difference between revisions of "BBB-COMMS-2"

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Line 35: Line 35:
  
 
==== H2-H9 = 4 Pin Headers ====
 
==== H2-H9 = 4 Pin Headers ====
−
 
+
<pre>
 
Card Header GPIO BBB Pin
 
Card Header GPIO BBB Pin
 
H2-3 N/A N/A
 
H2-3 N/A N/A
Line 56: Line 56:
 
H9-3 UART4_TX P9_13
 
H9-3 UART4_TX P9_13
 
H9-4 UART4_RX P9_11
 
H9-4 UART4_RX P9_11
−
H10-H17 = 3 Pin Headers
+
</pre>
 +
 
 +
==== H10-H17 = 3 Pin Headers ====
 +
<pre>
 
Card Header GPIO BBB Pin
 
Card Header GPIO BBB Pin
 
H10-3 (KEY)
 
H10-3 (KEY)
Line 69: Line 72:
 
H16-3 GPIO1_12 P8_12
 
H16-3 GPIO1_12 P8_12
 
H17-3 GPIO1_13 P8_11
 
H17-3 GPIO1_13 P8_11
−
Production Testing
+
</pre>
−
Setup
+
 
−
Install BBB-COMMS-2 on BBB
+
== Production Testing ==
−
Install shunt at H1 (Write Enable)
+
 
−
Ethernet connection to BBB
+
=== Setup ===
−
Power via 5V jack to BBB
+
 
−
Verify 3.3V LED is lit
+
* Install BBB-COMMS-2 on BBB
−
Log in via putty
+
* Install shunt at H1 (Write Enable)
−
User = root
+
* Ethernet connection to BBB
−
Password = enter
+
* Power via 5V jack to BBB
−
GPIO Testing
+
* Verify 3.3V LED is lit
−
Hook up LED-32 Card to these pins
+
* Log in via putty
 +
** User = root
 +
** Password = enter
 +
 
 +
=== GPIO Testing ===
 +
 
 +
* Hook up LED-32 Card to these pins
 +
<pre>
 
D0 = "P8_26"
 
D0 = "P8_26"
 
D1 = "P8_17"
 
D1 = "P8_17"
Line 101: Line 111:
 
D23 = "P9_14"
 
D23 = "P9_14"
 
D24 = "P9_13"
 
D24 = "P9_13"
−
Run test via:
+
</pre>
 +
* Run test via:
 +
<pre>
 
cd ~/pyBBB/BBB-COMMS-2/blink-BBB-COMMS-2/
 
cd ~/pyBBB/BBB-COMMS-2/blink-BBB-COMMS-2/
 
python blink-BBB-COMMS-2.py
 
python blink-BBB-COMMS-2.py
 +
<pre>
 
   
 
   
−
I2C Testing/EEPROM Programming
+
=== I2C Testing/EEPROM Programming ===
−
Go to directory
+
 
−
Program the EEPROM
+
* Go to directory
−
Verify by typing
+
* Program the EEPROM
 +
* Verify by typing
 +
<pre>
 
cd ~/pyBBB/BBB-COMMS-2/mkeeprom
 
cd ~/pyBBB/BBB-COMMS-2/mkeeprom
 
cat data.eeprom > /sys/bus/i2c/devices/1-0054/eeprom
 
cat data.eeprom > /sys/bus/i2c/devices/1-0054/eeprom
 
cat /sys/bus/i2c/devices/1-0054/eeprom | hexdump -C
 
cat /sys/bus/i2c/devices/1-0054/eeprom | hexdump -C
−
+
</pre>
−
Result should be like -
+
* Result should be like -
 +
<pre>
 
00000000  aa 55 33 ee 41 30 42 42  42 2d 47 56 53 2d 33 00  |.U3.A0BBB-COMMS-|
 
00000000  aa 55 33 ee 41 30 42 42  42 2d 47 56 53 2d 33 00  |.U3.A0BBB-COMMS-|
 
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |2...............|
 
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |2...............|
Line 126: Line 142:
 
*
 
*
 
00008000
 
00008000
−
Remove WE jumper
+
</pre>
−
Type
+
* Remove WE jumper
 +
* Type
 +
<pre>
 
cat data.eeprom > /sys/bus/i2c/devices/1-0054/eeprom
 
cat data.eeprom > /sys/bus/i2c/devices/1-0054/eeprom
 
   
 
   
−
Result should be error
+
</pre>
 +
* Result should be error
 +
<pre>
 
root@BBB01:~/pyBBB/BBB-COMMS-2/mkeeprom# cat data.eeprom > /sys/bus/i2c/devices/1-0054/eeprom
 
root@BBB01:~/pyBBB/BBB-COMMS-2/mkeeprom# cat data.eeprom > /sys/bus/i2c/devices/1-0054/eeprom
 
cat: write error: Connection timed out
 
cat: write error: Connection timed out
−
Prepare to re-run
+
</pre>
−
Type
+
* Prepare to re-run
 +
* Type
 +
<pre>
 
halt
 
halt
−
Combined Copy/Paste
+
</pre>
 +
*Combined Copy/Paste
 +
<pre>
 
cd ~/pyBBB/BBB-COMMS-2/blink-BBB-COMMS-2
 
cd ~/pyBBB/BBB-COMMS-2/blink-BBB-COMMS-2
 
python blink-BBB-COMMS-2.py
 
python blink-BBB-COMMS-2.py
Line 144: Line 168:
 
cat /sys/bus/i2c/devices/1-0054/eeprom | hexdump -C
 
cat /sys/bus/i2c/devices/1-0054/eeprom | hexdump -C
 
   
 
   
−
BBB-COMMS-2 Assembly Sheet
+
<pre>
−
BBB-COMMS-2 Rev X1 Assembly Sheet
 
−
Issues with X1 card
 
−
TBD
 
  
 
== BBB-COMMS-2 Assembly Sheet/Parts List ==
 
== BBB-COMMS-2 Assembly Sheet/Parts List ==
  
 
* [[BBB-COMMS-2 Rev X1 Assembly Sheet]]
 
* [[BBB-COMMS-2 Rev X1 Assembly Sheet]]

Revision as of 11:35, 25 January 2020

Tindie-mediums.png

BBB-COMMS-2-P418-720px.jpg

Features

Extensive I/O connections

  • (13) GPIOs - GVS (Ground/Voltage/Signal) pins
    • GVS (Ground/Voltage/Signal) pins
  • (3) UARTs - GVTxRx (Ground/Voltage/Tx/Rx) pins
    • GVTxRx (Ground/Voltage/Tx/Rx) pins
  • (1) I2C bus- GVSdaScl (Ground/Voltage/SDA/SCL) pins
    • GVSdaScl (Ground/Voltage/SDA/SCL) pins
    • Support for keyed headers
  • Cape Support features
    • Cape configuration EEPROM with write enable jumper
  • Beaglebone Black form factor
  • Power LED

Headers and Connectors

BBB-COMMS-1-CAD-OSHPark-X1.png

Header

H1 - Write Enable Header

  • Install jumper onto header to allow writes to EEPROM
  • Remove jumper from header to prevent writes to EEPROM

Connectors

H2-H9 = 4 Pin Headers

Card Header	GPIO	BBB Pin
H2-3	N/A	N/A
H2-4 (Key)
No pin

N/A	N/A
H3-3	GPIO3_19	P9_27
H3-4	GPIO1_17	P9_23
H4-3	UART1_TX	P9_24
H4-4	UART1_RX	P9_26
H5-3	UART2_TX	P9_21
H5-4	UART2_RX	P9_22
H6-3	I2C_SDA	P9_18
H6-4	I2C_SCL	P9_17
H7-3	EHPWM1B	P9_16
H7-4	GPIO1_16	P9_15
H8-3	EHRPWM1A	P9_14
H8-4	GPIO1_28	P9_12
H9-3	UART4_TX	P9_13
H9-4	UART4_RX	P9_11

H10-H17 = 3 Pin Headers

Card Header	GPIO	BBB Pin
H10-3 (KEY)
No pin

N/A	N/A
H11-3	GPIO1_29	P8_26
H12-3	GPIO2_1	P8_18
H13-3	GPIO0_27	P8_17
H14-3	GPIO1_14	P8_16
H15-3	GPIO1_15	P8_15
H16-3	GPIO1_12	P8_12
H17-3	GPIO1_13	P8_11

Production Testing

Setup

  • Install BBB-COMMS-2 on BBB
  • Install shunt at H1 (Write Enable)
  • Ethernet connection to BBB
  • Power via 5V jack to BBB
  • Verify 3.3V LED is lit
  • Log in via putty
    • User = root
    • Password = enter

GPIO Testing

  • Hook up LED-32 Card to these pins
D0 = "P8_26"
D1 = "P8_17"
D2 = "P8_15"
D3 = "P8_11"
D4 = "P9_23"
D5 = "P9_26"
D6 = "P9_22"
D7 = "P9_15"
D8 = "P9_12"
D9 = "P9_11"

D16 = "P8_18"
D17 = "P8_16"
D18 = "P8_12"
D19 = "P9_27"
D20 = "P9_24"
D21 = "P9_21"
D22 = "P9_16"
D23 = "P9_14"
D24 = "P9_13"
  • Run test via:
cd ~/pyBBB/BBB-COMMS-2/blink-BBB-COMMS-2/
python blink-BBB-COMMS-2.py
<pre>
 
=== I2C Testing/EEPROM Programming ===

* Go to directory
* Program the EEPROM
* Verify by typing
<pre>
cd ~/pyBBB/BBB-COMMS-2/mkeeprom
cat data.eeprom > /sys/bus/i2c/devices/1-0054/eeprom
cat /sys/bus/i2c/devices/1-0054/eeprom | hexdump -C
  • Result should be like -
00000000  aa 55 33 ee 41 30 42 42  42 2d 47 56 53 2d 33 00  |.U3.A0BBB-COMMS-|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |2...............|
00000020  00 00 00 00 00 00 58 31  00 00 4c 61 6e 64 20 42  |......X1..Land B|
00000030  6f 61 72 64 73 2c 20 4c  4c 43 42 42 42 2d 47 56  |oards, LLCBBB-CO|
00000040  53 2d 33 00 00 00 00 00  00 00 00 00 30 30 30 30  |MS-2........0000|
00000050  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
000000e0  00 00 00 00 00 00 00 00  00 00 00 00 00 fa 01 f4  |................|
000000f0  00 fa 00 00 ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
00000100  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
*
00008000
  • Remove WE jumper
  • Type
cat data.eeprom > /sys/bus/i2c/devices/1-0054/eeprom
  • Result should be error
root@BBB01:~/pyBBB/BBB-COMMS-2/mkeeprom# cat data.eeprom > /sys/bus/i2c/devices/1-0054/eeprom
cat: write error: Connection timed out
  • Prepare to re-run
  • Type
halt
  • Combined Copy/Paste
cd ~/pyBBB/BBB-COMMS-2/blink-BBB-COMMS-2
python blink-BBB-COMMS-2.py

cd ~/pyBBB/BBB-COMMS-2/mkeeprom/
cat data.eeprom > /sys/bus/i2c/devices/1-0054/eeprom
cat /sys/bus/i2c/devices/1-0054/eeprom | hexdump -C
 



BBB-COMMS-2 Assembly Sheet/Parts List

* BBB-COMMS-2 Rev X1 Assembly Sheet
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