Difference between revisions of "BBB-GVS-3"
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[[File:BBB-GVS-3-X2-CAD-02.PNG]] | [[File:BBB-GVS-3-X2-CAD-02.PNG]] | ||
| − | === J1 Connector === | + | === J1 Connector - SPI1_D1 === |
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| − | === J2 Connector === | + | === J2 Connector - GPIO3_19 === |
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| − | === J3 Connector === | + | === J3 Connector - UART1 === |
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| − | === J4 Connector === | + | === J4 Connector - GPIO1_17 === |
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| − | === J5 Connector === | + | === J5 Connector - UART2 === |
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| − | === J6 Connector === | + | === J6 Connector - I2C1 === |
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| − | === J7 Connector === | + | === J7 Connector - GPIO1_16 === |
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| − | === J8 Connector === | + | === J8 Connector - UART4 === |
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| − | === J9 Connector === | + | === J9 Connector - EHRPWM1A === |
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| − | === J10 Connector === | + | === J10 Connector - GPIO1_28 === |
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| − | === J12 Connector === | + | === J12 Connector - GPIO1_29 === |
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| − | === J13 Connector === | + | === J13 Connector - EHRPWM2A === |
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| − | === J14 Connector === | + | === J14 Connector - GPIO2_1 === |
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| − | === J15 Connector === | + | === J15 Connector - GPIO0_27 === |
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| − | === J16 Connector === | + | === J16 Connector - GPIO1_14 === |
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| − | === J17 Connector === | + | === J17 Connector - GPIO1_15 === |
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| − | === J18 Connector === | + | === J18 Connector - EHRPWM2B === |
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| − | === J19 Connector === | + | === J19 Connector - GPIO1_12 === |
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| − | === J20 Connector === | + | === J20 Connector - GPIO1_13 === |
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| − | === J21 Connector === | + | === J21 Connector - TIMER5 === |
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| − | === J22 Connector === | + | === J22 Connector - TIMER6 === |
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| − | === J23 Connector === | + | === J23 Connector - TIMER4 === |
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| − | === J24 Connector === | + | === J24 Connector - TIMER7 === |
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Revision as of 13:40, 8 April 2022
Contents
- 1 Features
- 2 Connectors
- 2.1 J1 Connector - SPI1_D1
- 2.2 J2 Connector - GPIO3_19
- 2.3 J3 Connector - UART1
- 2.4 J4 Connector - GPIO1_17
- 2.5 J5 Connector - UART2
- 2.6 J6 Connector - I2C1
- 2.7 J7 Connector - GPIO1_16
- 2.8 J8 Connector - UART4
- 2.9 J9 Connector - EHRPWM1A
- 2.10 J10 Connector - GPIO1_28
- 2.11 J12 Connector - GPIO1_29
- 2.12 J13 Connector - EHRPWM2A
- 2.13 J14 Connector - GPIO2_1
- 2.14 J15 Connector - GPIO0_27
- 2.15 J16 Connector - GPIO1_14
- 2.16 J17 Connector - GPIO1_15
- 2.17 J18 Connector - EHRPWM2B
- 2.18 J19 Connector - GPIO1_12
- 2.19 J20 Connector - GPIO1_13
- 2.20 J21 Connector - TIMER5
- 2.21 J22 Connector - TIMER6
- 2.22 J23 Connector - TIMER4
- 2.23 J24 Connector - TIMER7
- 2.24 J11 - Write Enable (WE)
- 2.25 EEPROM Connections
- 3 Python pin assignments by header J number
- 4 Production Testing
- 5 Drivers / Example Code
- 6 Issues
- 7 BBB-GVS-3 Assembly Sheet
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
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
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 Testing
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 are lit
- BBB are located on the Secondary net at:
- BBB Rev C - 192.168.2.109
- BBB Rev B - 192.168.2.110
- Log in via putty
- User = root
- Password = enter
EEPROM Programming
- Go to directory
- Program the EEPROM
- Verify by typing
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
- 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
- 1x9 end marked "PROTOA12" plugs into resistor card with "PROTOA12" label facing towards resistors
- Run analog ladder code
- May need to run 2x to get accurate value
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
- Hook up LED-32 Card to these pins
BBB-GVS-3 connections
- 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
