TechLab cape - beagleboard/pocketbeagle GitHub Wiki

Go see https://beagleboard.org/techlab

Purchase a full selection of parts via https://www.digikey.com/short/p01cj1

Getting Started

Setup microSD card

Use image XYZ or newer

Login

Use Cloud9 IDE or serial terminal

user: debian
password: temppwd

Install overlays

sudo sed -i -e "s/#?uboot_overlay_addr0=.*$/uboot_overlay_pru=\/lib\/firmware\/PB-I2C2-ACCEL-TECHLAB-CAPE.dtbo/;" /boot/uEnv.txt
sudo sed -i -e "s/#?uboot_overlay_addr1=.*$/uboot_overlay_pru=\/lib\/firmware\/PB-PWM-RGB-TECHLAB-CAPE.dtbo/;" /boot/uEnv.txt
sudo sed -i -e "s/#?uboot_overlay_addr2=.*$/uboot_overlay_pru=\/lib\/firmware\/PB-SPI1-7SEG-TECHLAB-CAPE.dtbo/;" /boot/uEnv.txt
sudo sed -i -e "s/#?uboot_overlay_pru=.*RPROC.*$/uboot_overlay_pru=\/lib\/firmware\/AM335X-PRU-RPROC-4-14-TI-00A0.dtbo/;" /boot/uEnv.txt
sudo shutdown -r now

Testing interfaces

Buttons

  • L
    • Pin: P2_33
    • Ball: R12
    • GPIO: 45
  • R
    • Pin: P1_29
    • Ball: A14
    • GPIO: 117
    • PRU: PRU0_7
config-pin p1.29 gpio
cd /sys/class/gpio;watch -n0 cat gpio45/value gpio117/value

Light sensor

  • Pin: P1_19
  • Ball: B6
  • AIN: 0
watch -n0 cat /sys/bus/iio/devices/iio\:device0/in_voltage0_raw

I2C Accelerometer

  • Bus: I2C2
  • Pins:
    • SDA: P1_26
    • SCL: P1_28
    • INT1: P1_34
    • INT2: P1_33
cd /sys/bus/iio/devices/iio\:device1;watch -n0 cat in_accel_x_raw in_accel_y_raw in_accel_z_raw

SPI 7-segment LEDs

  • Bus: SPI1
  • Pins:
    • SCLK: P2_29
    • CS1: P2_31
    • MOSI: P2_25
    • MISO: P2_27
echo 1 > /sys/class/leds/techlab\:\:seg0/brightness
echo 1 > /sys/class/leds/techlab\:\:seg1/brightness
echo 1 > /sys/class/leds/techlab\:\:seg2/brightness
echo 1 > /sys/class/leds/techlab\:\:seg3/brightness
echo 1 > /sys/class/leds/techlab\:\:seg4/brightness
echo 1 > /sys/class/leds/techlab\:\:seg5/brightness
echo 1 > /sys/class/leds/techlab\:\:seg6/brightness
echo 1 > /sys/class/leds/techlab\:\:seg8/brightness
echo 1 > /sys/class/leds/techlab\:\:seg9/brightness
echo 1 > /sys/class/leds/techlab\:\:seg10/brightness
echo 1 > /sys/class/leds/techlab\:\:seg11/brightness
echo 1 > /sys/class/leds/techlab\:\:seg12/brightness
echo 1 > /sys/class/leds/techlab\:\:seg13/brightness
echo 1 > /sys/class/leds/techlab\:\:seg14/brightness

PWM RGB LED

  • Red
    • Pin: P1_33
    • PWM: EHRPWM0B
    • PRU: PRU0_1
  • Green
    • Pin: P2_1
    • PWM: EHRPWM1A
  • Blue
    • Pin: P1_36
    • PWM: EHRPWM0A
config-pin p1.33 pwm
echo 10 | sudo tee /sys/class/leds/techlab\:\:red/brightness
echo 10 | sudo tee /sys/class/leds/techlab\:\:green/brightness
echo 10 | sudo tee /sys/class/leds/techlab\:\:blue/brightness

PRU Buzzer

Requires PRU0 firmware image from beagle-tester. Needs to be put into the bone101 demos.

#echo pruout > /sys/devices/platform/ocp/ocp\:P2_30_pinmux/state
config-pin p2.30 pruout
echo stop | sudo tee /sys/class/remoteproc/remoteproc1/state
echo start | sudo tee /sys/class/remoteproc/remoteproc1/state

mikroBUS

Left Right
AIN6/GPIO87 (P1_2) PWM1A (P2_1) **
INT/GPIO89 (P1_4) RST/GPIO23 (P2_3)
SPI0 CS (P1_6) UART4 RX (P2_5)
SPI0 CLK (P1_8) UART4 TX (P2_7)
SPI0 MISO (P1_10) I2C1 SCL (P2_9)
SPI0 MOSI (P1_12) I2C1 SDA (P2_11)
+5V/VOUT +3.3V
GND GND
  • ** PWM1A (P2_1) is shared with the green of the RGB LED.

To do

echo 10 > /sys/class/leds/techlab\:\:green/brightness
echo 100 > /sys/class/leds/techlab\:\:blue/brightness
echo pwm > /sys/devices/platform/ocp/ocp\:P1_33_pinmux/state
echo 200 > /sys/class/leds/techlab\:\:red/brightness
echo 1 > /sys/class/leds/techlab\:\:seg0/brightness
echo 1 > /sys/class/leds/techlab\:\:seg1/brightness
echo 1 > /sys/class/leds/techlab\:\:seg2/brightness
echo 1 > /sys/class/leds/techlab\:\:seg3/brightness
echo 1 > /sys/class/leds/techlab\:\:seg4/brightness
echo 1 > /sys/class/leds/techlab\:\:seg5/brightness
echo 1 > /sys/class/leds/techlab\:\:seg6/brightness
echo 1 > /sys/class/leds/techlab\:\:seg8/brightness
echo 1 > /sys/class/leds/techlab\:\:seg9/brightness
echo 1 > /sys/class/leds/techlab\:\:seg10/brightness
echo 1 > /sys/class/leds/techlab\:\:seg11/brightness
echo 1 > /sys/class/leds/techlab\:\:seg12/brightness
echo 1 > /sys/class/leds/techlab\:\:seg13/brightness
echo 1 > /sys/class/leds/techlab\:\:seg14/brightness
echo pruout > /sys/devices/platform/ocp/ocp\:P2_30_pinmux/state
echo start > /sys/class/remoteproc/remoteproc1/state
echo stop > /sys/class/remoteproc/remoteproc1/state
echo start > /sys/class/remoteproc/remoteproc1/state
cat /sys/bus/iio/devices/iio\:device0/in_voltage0_raw
cat /sys/bus/iio/devices/iio\:device0/in_voltage0_raw
cat /sys/bus/iio/devices/iio\:device1/in_accel_x_raw
cat /sys/bus/iio/devices/iio\:device1/in_accel_x_raw
cat /sys/bus/iio/devices/iio\:device1/in_accel_x_raw
echo gpio > /sys/class/leds/techlab\:\:seg0/trigger
echo 45 > /sys/class/leds/techlab\:\:seg0/gpio
echo 1 > /sys/class/leds/techlab\:\:seg0/inverted
cat /sys/class/leds/techlab\:\:seg0/brightness
cat /sys/class/leds/techlab\:\:seg0/brightness
echo gpio > /sys/devices/platform/ocp/ocp\:P1_29_pinmux/state
echo gpio > /sys/class/leds/techlab\:\:seg1/trigger
echo 117 > /sys/class/leds/techlab\:\:seg1/gpio
echo 1 > /sys/class/leds/techlab\:\:seg1/inverted
cat /sys/class/leds/techlab\:\:seg1/brightness
cat /sys/class/leds/techlab\:\:seg1/brightness

Version info for examples

debian@beaglebone:/var/lib/cloud9$ sudo /opt/scripts/tools/version.sh
[sudo] password for debian:
git:/opt/scripts/:[1aa73453b2c980b75e31e83dab7dd8b6696f10c7]
eeprom:[A335PBGL00A21741GPB42934]
model:[TI_AM335x_PocketBeagle]
dogtag:[BeagleBoard.org Debian Image 2018-10-07]
bootloader:[microSD]:[/dev/mmcblk0]:[U-Boot 2018.09-00002-g0b54a51eee]:[location: dd MBR]
kernel:[4.14.71-ti-r80]
nodejs:[v6.14.4]
uboot_overlay_options:[enable_uboot_overlays=1]
uboot_overlay_options:[uboot_overlay_addr0=/lib/firmware/PB-I2C2-ACCEL-TECHLAB-CAPE.dtbo]
uboot_overlay_options:[uboot_overlay_addr1=/lib/firmware/PB-PWM-RGB-TECHLAB-CAPE.dtbo]
uboot_overlay_options:[uboot_overlay_addr2=/lib/firmware/PB-SPI1-7SEG-TECHLAB-CAPE.dtbo]
uboot_overlay_options:[uboot_overlay_pru=/lib/firmware/AM335X-PRU-RPROC-4-14-TI-00A0.dtbo]
uboot_overlay_options:[enable_uboot_cape_universal=1]
pkg check: to individually upgrade run: [sudo apt install --only-upgrade <pkg>]
pkg:[bb-cape-overlays]:[4.4.20180928.0-0rcnee0~stretch+20180928]
pkg:[bb-wl18xx-firmware]:[1.20180517-0rcnee0~stretch+20180517]
pkg:[kmod]:[23-2rcnee1~stretch+20171005]
pkg:[librobotcontrol]:[1.0.3-git20181005.0-0rcnee0~stretch+20181005]
pkg:[firmware-ti-connectivity]:[20170823-1rcnee1~stretch+20180328]
groups:[debian : debian adm kmem dialout cdrom floppy audio dip video plugdev users systemd-journal i2c bluetooth netdev cloud9ide gpio pwm eqep admin spi tisdk weston-launch xenomai]
cmdline:[console=ttyO0,115200n8 bone_capemgr.uboot_capemgr_enabled=1 root=/dev/mmcblk0p1 ro rootfstype=ext4 rootwait coherent_pool=1M net.ifnames=0 quiet]
dmesg | grep pinctrl-single
[    1.079830] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568
dmesg | grep gpio-of-helper
[    1.088027] gpio-of-helper ocp:cape-universal: ready
END
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