SBC/Beaglebone¶

Software¶

Hardware¶

Header References¶

../../_images/beagle_bone_header.png

../../_images/beagle_bone_headers_pwm.png

../../_images/beagle_bone_headers_serial.png

../../_images/beagle_bone_headers_pru.png

Input/Output (IO)¶

ADC¶

12 Bit
125 ns sample time
0-1.8V
2uA sample current
Overlays: BB-ADC
Sysfs Path: /sys/bus/iio/devices/iio:device0

Warning

Vmax on ADC is 1.8V

GPIO¶

3.3 V
Source 6mA, Sink 8 mA [2]_
Pins limited to sourcing 4mA: P9_19, P9_20, P9_24, P9_26, P9_41, P9_24
Internal Pullup/down resistors: 25K
Sysfs path: /sys/class/gpio

Note

GPIO number matches the export number under /sys/class/gpio.
EX: GPIO_66 = echo 66 > /sys/class/gpio/export

../../_images/beagle_bone_headers_digital.png

Default Configurations:

Header Pin	Pin Name	PU/PD
P8_7	GPIO_66	PU
P8_8	GPIO_67	PU
P8_9	GPIO_69	PU
P8_10	GPIO_68	PU
P8_11	GPIO_45	PD
P8_12	GPIO_44	PD
P8_15	GPIO_47	PD
P8_16	GPIO_46	PD
P8_17	GPIO_27	PD
P8_18	GPIO_65	PD

PWM¶

xyz

Timers¶

xyz

Busses¶

I2C¶

Overlays: BB-I2C1, BB-I2C2

Note

I2C-0 is not exposed on headers
I2C-1 conflicts with SPI-0
External pullups required on SDA & SCL

../../_images/beagle_bone_headers_i2c.png

	I2C1	I2C1	I2C2	I2C2
Signal	Number	Name	Number	Name
SCL	P9_17	SPI0_CS0	P9_19	I2C2_SCL
SDA	P9_18	SPI0_D1	P9_20	I2C2_SDA

SPI¶

Overlays: BB-SPIDEV-0, BB-SPIDEV1

Note

SPI-0 conflicts with I2C-1

../../_images/beagle_bone_headers_spi.png

	SPI0	SPI0	SPI1	SPI1
Signal	Number	Name	Number	Name
SCLK	P9_22	spi0_sclk	P9_31	spi1_sclk
MOSI	P9_18	spi0_d1	P9_30	spi1_d1
MISO	P9_21	spi0_do	P9_29	spi1_d0
CS0	P9_17	spi0_cs0	P9_28	spi1_cs0
CS1

UART¶

xyz

Community¶

Accessories¶

References¶