Difference between revisions of "BBB-GVS-3"

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Line 10: Line 10:
 
** GVS pins
 
** GVS pins
 
* (3) UARTs, GVTxRx pins
 
* (3) UARTs, GVTxRx pins
−
** GVTxRx pins
+
** Gnd, Vcc, Tx, Rx pins
−
* (1) I2C bus, GVSdaSck
+
* (1) I2C bus, G, V, SDA, SCL
−
** GVSdaSck
+
** Ground, Voltage, SDA, SCL
 
* (8) Channels of 3.3V to 5V level translators
 
* (8) Channels of 3.3V to 5V level translators
 
** Use female to female jumpers to route the GPIO lines to the translator channels
 
** Use female to female jumpers to route the GPIO lines to the translator channels
 
** 5V side has GVS pins
 
** 5V side has GVS pins
 
* (7) 1.8V analog GVS connections with analog voltage/ground
 
* (7) 1.8V analog GVS connections with analog voltage/ground
−
** Buffer opamps on the analog inputs
+
** Buffer Opamps on the analog inputs
 
* 5V pins are all ESD protected pins with 15 kV of protection
 
* 5V pins are all ESD protected pins with 15 kV of protection
 
* Selectable 5V source (SYS_5V or VDD_5V)
 
* Selectable 5V source (SYS_5V or VDD_5V)
−
LEDs for 3.3V and 5V power
+
* LEDs for 3.3V and 5V power
 
* Cape configuration EEPROM with write enable jumper
 
* Cape configuration EEPROM with write enable jumper
 
* Beaglebone Black form factor
 
* Beaglebone Black form factor
Line 26: Line 26:
 
== Connectors ==
 
== Connectors ==
  
−
[[File:BBB-GVS-3-X2-CAD.PNG]]
+
[[File:BBB-GVS-3-X2-CAD-02.PNG]]
 +
 
 +
=== J1 Connector - SPI1_D1 ===
  
 
<pre>
 
<pre>
−
Card Header GPIO BBB Pin
+
Conn GPIO BBB Pin
−
J1 SPI1_D1 P9_30
+
J1 SPI1_D1 P9_30
 +
</pre>
 +
 
 +
=== J2 Connector - GPIO3_19 ===
 +
 
 +
<pre>
 +
Conn GPIO BBB Pin
 
J2 GPIO3_19 P9_27
 
J2 GPIO3_19 P9_27
 +
</pre>
 +
 +
=== J3 Connector - UART1 ===
 +
 +
<pre>
 +
Conn GPIO BBB Pin
 
J3_3 UART1_RX P9_26
 
J3_3 UART1_RX P9_26
 
J3_4 UART1_TX P9_24
 
J3_4 UART1_TX P9_24
 +
</pre>
 +
 +
=== J4 Connector - GPIO1_17 ===
 +
 +
<pre>
 +
Conn GPIO BBB Pin
 
J4 GPIO1_17 P9_23
 
J4 GPIO1_17 P9_23
 +
</pre>
 +
 +
=== J5 Connector - UART2 ===
 +
 +
<pre>
 +
Conn GPIO BBB Pin
 
J5_3 UART2_TX P9_21
 
J5_3 UART2_TX P9_21
 
J5_4 UART2_RX P9_22
 
J5_4 UART2_RX P9_22
 +
</pre>
 +
 +
=== J6 Connector - I2C1 ===
 +
 +
<pre>
 +
Conn GPIO BBB Pin
 
J6_3 I2C1_SDA P9_18
 
J6_3 I2C1_SDA P9_18
 
J6_4 I2C1_SCL P9_17
 
J6_4 I2C1_SCL P9_17
 +
</pre>
 +
 +
=== J7 Connector - GPIO1_16 ===
 +
 +
<pre>
 +
Conn GPIO BBB Pin
 
J7 GPIO1_16 P9_15
 
J7 GPIO1_16 P9_15
 +
</pre>
 +
 +
=== J8 Connector - UART4 ===
 +
 +
<pre>
 +
Conn GPIO BBB Pin
 
J8_3 UART4_TX P9_13
 
J8_3 UART4_TX P9_13
 
J8_4 UART4_RX P9_11
 
J8_4 UART4_RX P9_11
 +
</pre>
 +
 +
=== J9 Connector - EHRPWM1A ===
 +
 +
<pre>
 +
Conn GPIO BBB Pin
 
J9 EHRPWM1A P9_14
 
J9 EHRPWM1A P9_14
 +
</pre>
 +
 +
=== J10 Connector - GPIO1_28 ===
 +
 +
<pre>
 +
Conn GPIO BBB Pin
 
J10 GPIO1_28 P9_12
 
J10 GPIO1_28 P9_12
 +
</pre>
 +
 +
=== J12 Connector - GPIO1_29 ===
 +
 +
<pre>
 +
Conn GPIO BBB Pin
 
J12 GPIO1_29 P8_26
 
J12 GPIO1_29 P8_26
 +
</pre>
 +
 +
=== J13 Connector - EHRPWM2A ===
 +
 +
<pre>
 +
Conn GPIO BBB Pin
 
J13 EHRPWM2A P8_19
 
J13 EHRPWM2A P8_19
−
J14 GPIO2_1 P8_18
+
</pre>
 +
 
 +
=== J14 Connector - GPIO2_1 ===
 +
 
 +
<pre>
 +
Conn GPIO BBB Pin
 +
J14 GPIO2_1 P8_18
 +
</pre>
 +
 
 +
=== J15 Connector - GPIO0_27 ===
 +
 
 +
<pre>
 +
Conn GPIO BBB Pin
 
J15 GPIO0_27 P8_17
 
J15 GPIO0_27 P8_17
 +
</pre>
 +
 +
=== J16 Connector - GPIO1_14 ===
 +
 +
<pre>
 +
Conn GPIO BBB Pin
 
J16 GPIO1_14 P8_16
 
J16 GPIO1_14 P8_16
 +
</pre>
 +
 +
=== J17 Connector - GPIO1_15 ===
 +
 +
<pre>
 +
Conn GPIO BBB Pin
 
J17 GPIO1_15 P8_15
 
J17 GPIO1_15 P8_15
 +
</pre>
 +
 +
=== J18 Connector - EHRPWM2B ===
 +
 +
<pre>
 +
Conn GPIO BBB Pin
 
J18 EHRPWM2B P8_13
 
J18 EHRPWM2B P8_13
 +
</pre>
 +
 +
=== J19 Connector - GPIO1_12 ===
 +
 +
<pre>
 +
Conn GPIO BBB Pin
 
J19 GPIO1_12 P8_12
 
J19 GPIO1_12 P8_12
 +
</pre>
 +
 +
=== J20 Connector - GPIO1_13 ===
 +
 +
<pre>
 +
Conn GPIO BBB Pin
 
J20 GPIO1_13 P8_11
 
J20 GPIO1_13 P8_11
−
J21 TIMER5 P8_09
 
−
J22 TIMER6 P8_10
 
−
J23 TIMER4 P8_07
 
−
J24 TIMER7 P8_08
 
 
</pre>
 
</pre>
  
−
=== EEPROM Connections ===
+
=== J21 Connector - TIMER5 ===
 +
 
 +
<pre>
 +
Conn GPIO BBB Pin
 +
J21 TIMER5 P8_09
 +
</pre>
 +
 
 +
=== J22 Connector - TIMER6 ===
 +
 
 +
<pre>
 +
Conn GPIO BBB Pin
 +
J22 TIMER6 P8_10
 +
</pre>
 +
 
 +
=== J23 Connector - TIMER4 ===
 +
 
 +
<pre>
 +
Conn GPIO BBB Pin
 +
J23 TIMER4 P8_07
 +
</pre>
 +
 
 +
=== J24 Connector - TIMER7 ===
 +
 
 +
<pre>
 +
Conn GPIO BBB Pin
 +
J24 TIMER7 P8_08
 +
</pre>
 +
 
 +
=== J25 Connector - 5V Selection Jumper ===
 +
 
 +
* 1-2 = SYS_5V
 +
* 2-3 = VDD_5V
 +
 
 +
VDD_5V is the main power supply from the DC input jack. '''This voltage is not present when the board is powered via USB.''' The amount of current supplied by this rail is dependent upon the amount of current available. Based on the board design, this rail is limited to 1A per pin from the main board.
 +
 
 +
The SYS_5V rail is the main rail for the regulators on the main board. When powered from a DC supply or USB, this rail will be 5V. The available current from this rail depends on the current available from the USB and DC external supplies.
  
−
* The EEPROM connections are on I2C and have on-board pullup resistors.
+
* Available current (per pin)
−
* The connections are local to the card.
+
** 1000mA (x2 pins), VDD_5V
−
* The EEPROM part number is CAT24C256WI-GT3 [1]
+
** 250mA (x2 pins), SYS_5V
  
 
=== J11 - Write Enable (WE) ===
 
=== J11 - Write Enable (WE) ===
Line 69: Line 210:
 
* Install for write enable
 
* Install for write enable
 
* Remove for write protect
 
* Remove for write protect
 +
 +
=== EEPROM Connections ===
 +
 +
* The EEPROM connections are on I2C and have on-board pullup resistors.
 +
* The connections are local to the card.
 +
* The EEPROM part number is [https://www.mouser.com/ProductDetail/onsemi/CAT24C256WI-GT3?qs=rZgeL6XvLwaEqwp5Dppodg%3D%3D CAT24C256WI-GT3]
  
 
== Python pin assignments by header J number ==
 
== Python pin assignments by header J number ==
Line 100: Line 247:
 
</pre>
 
</pre>
  
−
== Production Testing ==
+
== Production Test Procedure ==
 +
 
 +
<video type="youtube">hsYC1Ckihcc</video>
  
 
=== Setup ===
 
=== Setup ===
  
 
* Install BBB-GVS-3 on Rev C BeagleBone Black card
 
* Install BBB-GVS-3 on Rev C BeagleBone Black card
−
* Install shunt at SYS on 5VSEL
+
* Install shunt at SYS on J25 (5VSEL)
 
* Install shunt at WE
 
* Install shunt at WE
 
* Ethernet connection to BBB
 
* Ethernet connection to BBB
 
* Power via 5V jack to BBB
 
* Power via 5V jack to BBB
−
* Verify 5V and 3.3V LEDs are lit
+
* Verify 5V and 3.3V LEDs on the card are lit
 +
* BBB are located on the Secondary net at:
 +
** BBB Rev C - 192.168.1.177
 +
** BBB Rev B - 192.168.2.110
 
* Log in via putty
 
* Log in via putty
 
** User = root
 
** User = root
 
** Password = enter
 
** Password = enter
 +
 +
=== EEPROM Programming ===
 +
 +
* Go to directory
 +
* Program the EEPROM
 +
* [https://github.com/land-boards/BBB/tree/master/BBB-GVS-3/mkeeprom mkeeprom code folder]
 +
* Verify by typing
 +
<pre>
 +
cd ~/pyBBB/BBB-GVS-3/mkeeprom
 +
cat data.eeprom > /sys/bus/i2c/devices/1-0054/eeprom
 +
cat /sys/bus/i2c/devices/1-0054/eeprom | hexdump -C
 +
 +
</pre>
 +
* Result should be like -
 +
<pre>
 +
00000000  aa 55 33 ee 41 30 42 42  42 2d 47 56 53 2d 33 00  |.U3.A0BBB-GVS-3.|
 +
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
 +
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-GV|
 +
00000040  53 2d 33 00 00 00 00 00  00 00 00 00 30 30 30 30  |S-3.........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
 +
</pre>
 +
 +
* Remove WE jumper
 +
* Type
 +
<pre>
 +
cat data.eeprom > /sys/bus/i2c/devices/1-0054/eeprom
 +
 +
</pre>
 +
* Result should be error
 +
<pre>
 +
root@BBB01:~/pyBBB/BBB-GVS-3/mkeeprom# cat data.eeprom > /sys/bus/i2c/devices/1-0054/eeprom
 +
cat: write error: Connection timed out
 +
</pre>
  
 
=== Analog Testing ===
 
=== Analog Testing ===
  
−
* Connect GRID49 card with resistor ladder
+
[[FILE:BBB-GVS-3_TEST_P1838_720PX.jpg]]
−
* (8) 10K resistors
+
 
−
* From 1.8V to all 7 inputs to ground
+
* [[GRID49]] card has a resistor ladder
−
* Input in 1/8 steps
+
** (8) 10K resistors
 +
** From 1.8V to all 7 inputs to ground
 +
** Input in 1/8 steps
 +
* Cable connections
 +
** 1x9 end marked "PROTOA12" plugs into resistor card with "PROTOA12" label facing towards resistors
 +
*** Green wire at A1 grid location on [[GRID49]] card, white wire at K12 grid location
 +
** 3-pin connector marked "A5" goes to A5
 +
*** Label faces Ethernet jack
 +
*** Green wire goes to ground, white wire goes to +1.8V
 
* Run analog ladder code
 
* Run analog ladder code
 +
** May need to run 2x to get accurate value
 +
* [https://github.com/land-boards/BBB/blob/master/BBB-GVS-3/analogLadder/analogLadder.py analogLadder.py] - Analog Test Code
 +
 
<pre>
 
<pre>
 
cd ~/pyBBB/BBB-GVS-3/analogLadder
 
cd ~/pyBBB/BBB-GVS-3/analogLadder
Line 127: Line 330:
 
</pre>
 
</pre>
 
* Pass/Fail message will be displayed
 
* Pass/Fail message will be displayed
 +
* Ideal values are
 
<pre>
 
<pre>
 
val0  0.625
 
val0  0.625
 
val1  0.125
 
val1  0.125
 
val2  0.75
 
val2  0.75
−
val3  0.248888894916
+
val3  0.24
−
val4  0.498888880014
+
val4  0.50
−
val5  0.372777789831
+
val5  0.375
 
val6  0.875
 
val6  0.875
 
PASS - Analog values match expected ladder values
 
PASS - Analog values match expected ladder values
Line 139: Line 343:
  
 
=== GPIO Testing ===
 
=== GPIO Testing ===
 +
 +
==== Cable set ====
 +
 +
* Cables connect [[LED-32]] card in ODAS Test Station to UUT
 +
 +
===== LED-32 connections =====
 +
 +
[[ FILE:BBB-GVS-3_TEST_P1841_720PX.jpg]]
  
 
* Hook up LED-32 Card to these pins
 
* Hook up LED-32 Card to these pins
 +
** Connect LED32-1 to [[LED-32]] card at pin 1
 +
** Connect LED32-21 to [[LED-32]] card at pin 21
 +
 +
===== BBB-GVS-3 connections =====
 +
 +
[[file:BBB-GVS-3_IMG_6133_Jacks_720px.jpg]]
 +
 +
* Connect "loose" 1x8 cable marked "3.3V-SIG" from UUT 3.3V side of translator, connect to "J12-SIG" UUT J12
 +
* Connect 1x8 cable from [[LED-32]] marked "GND" to UUT 5V side of translator GND pins
 +
* Connect 1x8 cable from [[LED-32]] marked "5V-SIG" to UUT 5V side of translator
 +
* Connect 1x5 cable from [[LED-32]] marked "J20-SIG" to UUT J20 SIG pins
 +
* Connect 2x5 cable from [[LED-32]] marked "J1-SIG" to UUT J1
 +
* Connect 2x5 cable from [[LED-32]] marked "J7-SIG" to UUT J6
 +
 
<pre>
 
<pre>
 
D0 = "P9_30" # GR-1 - D0
 
D0 = "P9_30" # GR-1 - D0
Line 169: Line 395:
 
# Common Ground
 
# Common Ground
 
</pre>
 
</pre>
−
Run test via:
+
 
 +
==== Run test ====
 +
 
 +
* [https://github.com/land-boards/BBB/blob/master/BBB-GVS-3/blink-BBB-GVS-3/src/blink-BBB-GVS-3.py blink-BBB-GVS-3.py] - Test code
 +
 
 
<pre>
 
<pre>
 
cd ~/pyBBB/BBB-GVS-3/blink-BBB-GVS-3/src
 
cd ~/pyBBB/BBB-GVS-3/blink-BBB-GVS-3/src
Line 178: Line 408:
 
* Lights will circulate around the card in a ring
 
* Lights will circulate around the card in a ring
 
* CTRL-C to end test
 
* CTRL-C to end test
−
 
−
=== I2C Testing/EEPROM Programming ===
 
−
 
−
* Go to directory
 
−
* Program the EEPROM
 
−
* Verify by typing
 
−
<pre>
 
−
cd ~/pyBBB/BBB-GVS-3/mkeeprom
 
−
cat data.eeprom > /sys/bus/i2c/devices/1-0054/eeprom
 
−
cat /sys/bus/i2c/devices/1-0054/eeprom | hexdump -C
 
−
 
−
</pre>
 
−
* Result should be like -
 
−
<pre>
 
−
00000000  aa 55 33 ee 41 30 42 42  42 2d 47 56 53 2d 33 00  |.U3.A0BBB-GVS-3.|
 
−
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
 
−
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-GV|
 
−
00000040  53 2d 33 00 00 00 00 00  00 00 00 00 30 30 30 30  |S-3.........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
 
−
</pre>
 
−
 
−
* Remove WE jumper
 
−
* Type
 
−
<pre>
 
−
cat data.eeprom > /sys/bus/i2c/devices/1-0054/eeprom
 
−
 
−
</pre>
 
−
* Result should be error
 
−
<pre>
 
−
root@BBB01:~/pyBBB/BBB-GVS-3/mkeeprom# cat data.eeprom > /sys/bus/i2c/devices/1-0054/eeprom
 
−
cat: write error: Connection timed out
 
−
</pre>
 
  
 
=== Prepare to re-run ===
 
=== Prepare to re-run ===
Line 224: Line 415:
 
halt
 
halt
 
</pre>
 
</pre>
 +
* Remove 5V Power cable to power of card
  
 
=== Combined Copy/Paste ===
 
=== Combined Copy/Paste ===
Line 239: Line 431:
  
 
halt
 
halt
−
  </pre>
+
   
 +
</pre>
 +
 
 +
== Drivers / Example Code ==
 +
 
 +
* [https://github.com/beagleboard/beaglebone-black/wiki/System-Reference-Manual BeagleBone Black System Reference Manual]
 +
 
 +
=== Blink LEDs code ===
 +
 
 +
* [https://github.com/land-boards/BBB/blob/master/BBB-GVS-3/blink-BBB-GVS-3/src/blink-BBB-GVS-3.pyy Blink LEDS on BBB-GVS-3 GPIO lines]
 +
 
 +
=== I2C Example Code ===
 +
 
 +
* [https://github.com/land-boards/BBB/tree/master/MCP23008 MCP23008 Example code]
 +
** [http://land-boards.com/blwiki/index.php?title=BeagleBone#Enable_the_I2C_devices_on_the_BeagleBone_Black_Rev_C Enable the I2C devices on the BeagleBone Black Rev C]
 +
** 2nd method - [https://datko.net/2013/11/03/bbb_i2c/ BeagleBone Black I2C References]
 +
* [https://sites.google.com/a/cameon.net/beaglebone/home/i2c-devices Enable the I2C devices on the BeagleBone Black]
 +
 
 +
== Issues ==
  
−
== Issues with X2 card ==
+
=== Issues with X2 card ===
  
 
* No known or reported issues
 
* No known or reported issues
  
−
== Issues with X1 card ==
+
=== Issues with X1 card ===
  
 
* WP jumper should be WE
 
* WP jumper should be WE

Latest revision as of 14:07, 21 June 2022

Tindie-mediums.png

BBB-GVS-3 6135-640px.jpg

Features

  • (19) GPIOs, GVS pins
    • GVS pins
  • (3) UARTs, GVTxRx pins
    • Gnd, Vcc, Tx, Rx pins
  • (1) I2C bus, G, V, SDA, SCL
    • Ground, Voltage, SDA, SCL
  • (8) Channels of 3.3V to 5V level translators
    • Use female to female jumpers to route the GPIO lines to the translator channels
    • 5V side has GVS pins
  • (7) 1.8V analog GVS connections with analog voltage/ground
    • Buffer Opamps on the analog inputs
  • 5V pins are all ESD protected pins with 15 kV of protection
  • Selectable 5V source (SYS_5V or VDD_5V)
  • LEDs for 3.3V and 5V power
  • Cape configuration EEPROM with write enable jumper
  • Beaglebone Black form factor

Connectors

BBB-GVS-3-X2-CAD-02.PNG

J1 Connector - SPI1_D1

Conn	GPIO		BBB Pin
J1	SPI1_D1		P9_30

J2 Connector - GPIO3_19

Conn	GPIO		BBB Pin
J2	GPIO3_19	P9_27

J3 Connector - UART1

Conn	GPIO		BBB Pin
J3_3	UART1_RX	P9_26
J3_4	UART1_TX	P9_24

J4 Connector - GPIO1_17

Conn	GPIO		BBB Pin
J4	GPIO1_17	P9_23

J5 Connector - UART2

Conn	GPIO		BBB Pin
J5_3	UART2_TX	P9_21
J5_4	UART2_RX	P9_22

J6 Connector - I2C1

Conn	GPIO		BBB Pin
J6_3	I2C1_SDA	P9_18
J6_4	I2C1_SCL	P9_17

J7 Connector - GPIO1_16

Conn	GPIO		BBB Pin
J7	GPIO1_16	P9_15

J8 Connector - UART4

Conn	GPIO		BBB Pin
J8_3	UART4_TX	P9_13
J8_4	UART4_RX	P9_11

J9 Connector - EHRPWM1A

Conn	GPIO		BBB Pin
J9	EHRPWM1A	P9_14

J10 Connector - GPIO1_28

Conn	GPIO		BBB Pin
J10	GPIO1_28	P9_12

J12 Connector - GPIO1_29

Conn	GPIO		BBB Pin
J12	GPIO1_29	P8_26

J13 Connector - EHRPWM2A

Conn	GPIO		BBB Pin
J13	EHRPWM2A	P8_19

J14 Connector - GPIO2_1

Conn	GPIO		BBB Pin
J14	GPIO2_1		P8_18

J15 Connector - GPIO0_27

Conn	GPIO		BBB Pin
J15	GPIO0_27	P8_17

J16 Connector - GPIO1_14

Conn	GPIO		BBB Pin
J16	GPIO1_14	P8_16

J17 Connector - GPIO1_15

Conn	GPIO		BBB Pin
J17	GPIO1_15	P8_15

J18 Connector - EHRPWM2B

Conn	GPIO		BBB Pin
J18	EHRPWM2B	P8_13

J19 Connector - GPIO1_12

Conn	GPIO		BBB Pin
J19	GPIO1_12	P8_12

J20 Connector - GPIO1_13

Conn	GPIO		BBB Pin
J20	GPIO1_13	P8_11

J21 Connector - TIMER5

Conn	GPIO		BBB Pin
J21	TIMER5		P8_09

J22 Connector - TIMER6

Conn	GPIO		BBB Pin
J22	TIMER6		P8_10

J23 Connector - TIMER4

Conn	GPIO		BBB Pin
J23	TIMER4		P8_07

J24 Connector - TIMER7

Conn	GPIO		BBB Pin
J24	TIMER7		P8_08

J25 Connector - 5V Selection Jumper

  • 1-2 = SYS_5V
  • 2-3 = VDD_5V

VDD_5V is the main power supply from the DC input jack. This voltage is not present when the board is powered via USB. The amount of current supplied by this rail is dependent upon the amount of current available. Based on the board design, this rail is limited to 1A per pin from the main board.

The SYS_5V rail is the main rail for the regulators on the main board. When powered from a DC supply or USB, this rail will be 5V. The available current from this rail depends on the current available from the USB and DC external supplies.

  • Available current (per pin)
    • 1000mA (x2 pins), VDD_5V
    • 250mA (x2 pins), SYS_5V

J11 - Write Enable (WE)

  • Install for write enable
  • Remove for write protect

EEPROM Connections

  • The EEPROM connections are on I2C and have on-board pullup resistors.
  • The connections are local to the card.
  • The EEPROM part number is CAT24C256WI-GT3

Python pin assignments by header J number

J1 = "P9_30"		# GR-1 - D0
J2 = "P9_27"		# BL-1 - D16
J3_3 = "P9_26"		# VI-1 - D1
J3_4 = "P9_24"		# GY-1 - D17
J4 = "P9_23"		# WH-1 - D2
J5_3 = "P9_21"		# BL-1 - D18
J5_4 = "P9_22"		# BR-2 - D3
J7 = "P9_15"		# RD-2 - D19
J8_3 = "P9_13"		# OR-2 - D4
J8_4 = "P9_11"		# YL-2 - D20
J9 = "P9_14"		# GR-2 - D5
J10 = "P9_12"		# BU-2 - D21
J20 = "P8_11"		# VI-2 - D6
J21 = "P8_9"		# GY-2 - D22
J22 = "P8_10"		# WH-2 - D7
J23 = "P8_7"		# BL-2 - D23
J24 = "P8_8"		# BR-3 - D8
J12 = "P8_26"		# RD-3 - D24
J13 = "P8_19"		# OR-3 - D9
J14 = "P8_18"		# YL-3 - D25
J15 = "P8_17"		# GR-3 - D10
J16 = "P8_16"		# BU-3 - D26
J17 = "P8_15"		# VI-3 - D11
J18 = "P8_13"		# GY-3 - D27
J19 = "P8_12"		# WH-3 - D12

Production Test Procedure

Setup

  • Install BBB-GVS-3 on Rev C BeagleBone Black card
  • Install shunt at SYS on J25 (5VSEL)
  • Install shunt at WE
  • Ethernet connection to BBB
  • Power via 5V jack to BBB
  • Verify 5V and 3.3V LEDs on the card are lit
  • BBB are located on the Secondary net at:
    • BBB Rev C - 192.168.1.177
    • BBB Rev B - 192.168.2.110
  • Log in via putty
    • User = root
    • Password = enter

EEPROM Programming

cd ~/pyBBB/BBB-GVS-3/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-GVS-3.|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
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-GV|
00000040  53 2d 33 00 00 00 00 00  00 00 00 00 30 30 30 30  |S-3.........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-GVS-3/mkeeprom# cat data.eeprom > /sys/bus/i2c/devices/1-0054/eeprom
cat: write error: Connection timed out

Analog Testing

BBB-GVS-3 TEST P1838 720PX.jpg

  • GRID49 card has a resistor ladder
    • (8) 10K resistors
    • From 1.8V to all 7 inputs to ground
    • Input in 1/8 steps
  • Cable connections
    • 1x9 end marked "PROTOA12" plugs into resistor card with "PROTOA12" label facing towards resistors
      • Green wire at A1 grid location on GRID49 card, white wire at K12 grid location
    • 3-pin connector marked "A5" goes to A5
      • Label faces Ethernet jack
      • Green wire goes to ground, white wire goes to +1.8V
  • Run analog ladder code
    • May need to run 2x to get accurate value
  • analogLadder.py - Analog Test Code
cd ~/pyBBB/BBB-GVS-3/analogLadder
python analogLadder.py
  • Pass/Fail message will be displayed
  • Ideal values are
val0  0.625
val1  0.125
val2  0.75
val3  0.24
val4  0.50
val5  0.375
val6  0.875
PASS - Analog values match expected ladder values

GPIO Testing

Cable set

  • Cables connect LED-32 card in ODAS Test Station to UUT
LED-32 connections

BBB-GVS-3 TEST P1841 720PX.jpg

  • Hook up LED-32 Card to these pins
    • Connect LED32-1 to LED-32 card at pin 1
    • Connect LED32-21 to LED-32 card at pin 21
BBB-GVS-3 connections

BBB-GVS-3 IMG 6133 Jacks 720px.jpg

  • Connect "loose" 1x8 cable marked "3.3V-SIG" from UUT 3.3V side of translator, connect to "J12-SIG" UUT J12
  • Connect 1x8 cable from LED-32 marked "GND" to UUT 5V side of translator GND pins
  • Connect 1x8 cable from LED-32 marked "5V-SIG" to UUT 5V side of translator
  • Connect 1x5 cable from LED-32 marked "J20-SIG" to UUT J20 SIG pins
  • Connect 2x5 cable from LED-32 marked "J1-SIG" to UUT J1
  • Connect 2x5 cable from LED-32 marked "J7-SIG" to UUT J6
D0 = "P9_30"		# GR-1 - D0
D1 = "P9_26"		# VI-1 - D1
D2 = "P9_23"		# WH-1 - D2
D3 = "P9_22"		# BR-2 - D3
D4 = "P9_13"		# OR-2 - D4
D5 = "P9_14"		# GR-2 - D5
D6 = "P8_11"		# RD-3 - D6
D7 = "P8_10"		# YL-3 - D7
D8 = "P8_8"		# BU-3 - D8
D9 = "P8_19"		# GY-3 - D9
D10 = "P8_17"		# VI-2 - D10
D11 = "P8_15"		# WH-2 - D11
D12 = "P8_12"		# BR-3 - D12
D27 = "P8_13"		# BL-2 - D27
D26 = "P8_16"		# GY-2 - D26
D25 = "P8_18"		# WH-3 - D25
D24 = "P8_26"		# VI-3 - D24
D23 = "P8_7"		# GR-3 - D23
D22 = "P8_9"		# OR-3 - D22
D21 = "P9_12"		# BU-2 - D21
D20 = "P9_11"		# YL-2 - D20
D19 = "P9_15"		# RD-2 - D19
D18 = "P9_21"		# BL-1 - D18
D17 = "P9_24"		# GY-1 - D17
D16 = "P9_27"		# BL-1 - D16
# Common Ground

Run test

cd ~/pyBBB/BBB-GVS-3/blink-BBB-GVS-3/src
python blink-BBB-GVS-3.py
  • Lights will circulate around the card in a ring
  • CTRL-C to end test

Prepare to re-run

  • Type
halt
  • Remove 5V Power cable to power of card

Combined Copy/Paste

cd ~/pyBBB/BBB-GVS-3/mkeeprom
cat data.eeprom > /sys/bus/i2c/devices/1-0054/eeprom
cat /sys/bus/i2c/devices/1-0054/eeprom | hexdump -C

cd ~/BBB/BBB-GVS-3/analogLadder
python analogLadder.py

cd ~/pyBBB/BBB-GVS-3/blink-BBB-GVS-3/src
python blink-BBB-GVS-3.py

halt

Drivers / Example Code

Blink LEDs code

I2C Example Code

Issues

Issues with X2 card

  • No known or reported issues

Issues with X1 card

  • WP jumper should be WE
  • EEPROM A3 s/b high not low
  • Cut etch to U1-3
  • Add wire U1-3 to U1-8

BBB-GVS-3 Assembly Sheet

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