Hello Tim.
That's absolutely brilliant! I will get on and make a 'map' page for
the site.
One more thing...can you identify four more things:
1. The SMD push button in the extreme north east corner, furthest from
the ethernet port.
2. The SMD push button level with the previous one but close to, and
almost touching the ethernet connector.
3. The SMD push button in the south east corner and placed almost
directly over the micro-SD slot.
4. Where is the bank of four SMD LEDs that light when holding down
whichever of the push buttons is for flashing new OS.
That would make things pretty complete and I can then write a textual
description that is similar in approach to those we have for each Pi.
Thanks.
Mike
On 12/12/2016 20:51, Tim Chase wrote:
On December 12, 2016, Mike Ray wrote:
I now have to find blind person readable tables of pinouts online
or get a sighted person to help me identify the connections. When
I do I will make a Beaglebone Black description page for the Web
site.
If it's the diagram I've found online, holding it oriented so that
the USB port is on the bottom/south edge in the left corner, the 5v
DC input is on the top/north edge in the left corner, and the
ethernet connector is on the top/north edge in the center, I can give
you the following pinout based on the diagrams I've seen:
There are three main attachment points. Along the left/west edge,
theres a 46-hole (2x23) connector described as "P9". Adjacent to
that, just inside of it is a 6x1 pin serial debug port (supporting RX
& TX but none of the handshake signals) called UART0. Along the
right/east edge, there's another 46-hole (2x23) connector described
as "P8". For the following pin numberings, #1 is the top left, #2 is
the top right, #3 is below #1, continuing to #46 in the bottom right.
For the serial port, I've only found definitions for 3 of the 6
pins, though my reading suggests that this is some sort of "standard".
From bottom/south to top/north:
0: ?
1: TxD
2: RxD
3: ?
4: ?
5: GND
On the P9 (left/west) connector
1: DGND
2: DGND
3: VDD 3.3V
4: VDD 3.3V
5: VDD 5V
6: VDD 5V
7: SYS 5V
8: SYS 5V
9: PWR_BUT
10: SYS_RESET
11: UART4_RXD/GPIO_30
12: GPIO_60
13: UART4_TXD
14: EHRPWM1A
15: GPIO_48
16: EHRPWM1B
17: SPIO_CSO
18: SPIO_D1
19: I2C2_SCL
20: I2C2_SDA
21: SPIO_DO
22: SPIO_SLCK
23: GPIO_49
24: UART1_TXD
25: GPIO_117
26: UART1_RXD
27: GPIO_115
28: SPI1_CSO
29: SPI1_DO
30: GPIO_112
31: SP11_SCLK
32: VDD_ADC
33: AIN4
34: GND_ADC
35: AIN6
36: AIN5
37: AIN4
38: AIN3
39: AIN0
40: AIN1
41: GPIO_20
42: ECAPWMO
43: DGND
44: DGND
45: DGND
46: DGND
On the P8 (right/east)
1: DGND
2: DGND
3: MMC1_DAT6
4: MMC1_DAT7
5: MMC1_DAT2
6: MMC1_DAT3
7: GPIO_66
8: GPIO_67
9: GPIO_69
10: GPIO_68
11: GPIO_45
12: GPIO_44
13: EHRPWM2B
14: GPIO_26
15: GPIO_47
16: GPIO_46
17: GPIO_27
18: GPIO_65
19: EHRPWM2A
20: MMC1_CMD
21: MMC1_CLK
22: MMC1_DAT5
23: MMC1_DAT4
24: MMC1_DAT1
25: MMC1_DAT0
26: GPIO_61
27: LCD_VSYNC
28: LCD_PCLK
29: LCD_HSYNC
30: LCD_AC_BIAS
31: LCD_DATA14
32: LCD_DATA15
33: LCD_DATA13
34: LCD_DATA11
35: LCD_DATA12
36: LCD_DATA10
37: LCD_DATA8
38: LCD_DATA9
39: LCD_DATA6
40: LCD_DATA7
41: LCD_DATA4
42: LCD_DATA5
43: LCD_DATA2
44: LCD_DATA3
45: LCD_DATA0
46: LCD_DATA1
The digital pins are
P9: 11, 12, 13, 15, 17, 18, 23-27, 30, 41
P8: 7-12, 14-18, 26
The PWM pins are
P9: 14, 16, 21, 22, 42
P8: 13, 19
The 1.8v analog inputs are the "AIN0-AIN6"
The shared I2C bus are P9 19 & 20
The power/ground/reset pins are
P9: 1-10, 32, 34, 43-46
P8: 1 & 2
The reconfigurable digital pins are
P9: 28, 29, 31
P8: 3-6, 20-25, 27-46
Hope this helps,
-tim
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