Difference between revisions of "BBB-COMMS-2"
Jump to navigation
Jump to search
Blwikiadmin (talk | contribs) |
Blwikiadmin (talk | contribs) |
||
| Line 36: | Line 36: | ||
==== H2-H9 = 4 Pin Headers ==== | ==== H2-H9 = 4 Pin Headers ==== | ||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | + | ==== H2 - Power/Ground ==== | |
| − | H3- | + | |
| − | + | # GND | |
| − | H4- | + | # VCC |
| − | + | # N/C | |
| − | H5- | + | |
| − | + | ==== H3 - GPIO Pins ==== | |
| − | H6- | + | |
| − | + | # GND | |
| − | H7- | + | # VCC |
| − | + | # GPIO3_19 | |
| − | + | # GPIO1_17 | |
| − | H8- | + | |
| − | H9- | + | ==== H4 - UART1 ==== |
| − | + | ||
| − | + | # GND | |
| + | # VCC | ||
| + | # UART1_TXD | ||
| + | # UART1_RXD | ||
| + | |||
| + | ==== H5 - UART2 ==== | ||
| + | |||
| + | # GND | ||
| + | # VCC | ||
| + | # UART2_TXD | ||
| + | # UART2_RXD | ||
| + | |||
| + | ==== H6 - I2C1 ==== | ||
| + | |||
| + | # GND | ||
| + | # VCC | ||
| + | # I2C1_SDA | ||
| + | # I2C1_SCL | ||
| + | |||
| + | ==== H7 - GPIO Pins ==== | ||
| + | |||
| + | # GND | ||
| + | # VCC | ||
| + | # EHRPWM1A | ||
| + | # GPIO1_28 | ||
| + | |||
| + | ==== H8 - GPIO Pins ==== | ||
| + | |||
| + | # GND | ||
| + | # VCC | ||
| + | # EHRPWM1B | ||
| + | # GPIO3_19 | ||
| + | |||
| + | ==== H9 - UART4 ==== | ||
| + | |||
| + | # GND | ||
| + | # VCC | ||
| + | # UART4_TXD | ||
| + | # UART4_RXD | ||
==== H10-H17 = 3 Pin Headers ==== | ==== H10-H17 = 3 Pin Headers ==== | ||
Revision as of 18:34, 7 April 2022
Contents
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
- On I2C2 interface
- Beaglebone Black form factor
- Power LED
Headers and Connectors
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
H2 - Power/Ground
- GND
- VCC
- N/C
H3 - GPIO Pins
- GND
- VCC
- GPIO3_19
- GPIO1_17
H4 - UART1
- GND
- VCC
- UART1_TXD
- UART1_RXD
H5 - UART2
- GND
- VCC
- UART2_TXD
- UART2_RXD
H6 - I2C1
- GND
- VCC
- I2C1_SDA
- I2C1_SCL
H7 - GPIO Pins
- GND
- VCC
- EHRPWM1A
- GPIO1_28
H8 - GPIO Pins
- GND
- VCC
- EHRPWM1B
- GPIO3_19
H9 - UART4
- GND
- VCC
- UART4_TXD
- UART4_RXD
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
I2C Testing/EEPROM Programming
- Go to directory
- Program the EEPROM
- Verify by typing
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 -CBBB-COMMS-2 Assembly Sheet/Parts List
* BBB-COMMS-2 Rev X1 Assembly Sheet
