Journal

Week 1

• Jun 1: Compiled Linux
  • forked and then cloned the beagleboard/linux repo.
  • Compiled linux from source using these commmands:
    • make -j4 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- mrproper
    • $ make -j4 ARCH=arm bb.org_defconfig
    • $ make -j4 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- zImage
    • $ make -j4 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- modules
    • $ make -j4 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- dtbs
• Jun 2: Worked on this website
  • Updgraded to lanyon theme.
  • Udated details accordingly.
  • Created this Journal.
• Jun 3:
  • DT overlay PRs for LCD-4 Cape (BBAI) and Servo Cape (BBB)
• Jun 4:
  • Created Hello World Loadable Kernel Module (LKM).
  • Updated 2020 Projects wiki page.
• Jun 5:
  • Created the presentation for Intro Video.
• Jun 6:
  • Submitted pr for GSoC warm up task.
  • Seprate repo with the GSoC char driver and a usespace program to test that simple char driver.
• Jun 7:
  • Published intro YouTube Video.

Week 2

• Jun 8:
  • Tested LCD4 cape on BBBWL
• Jun 9:
  • Cleard some doubts on DT and beagle-tester with the help of ds2, jkridner and rcn-ee.
  • Used minicom to see the boot log/debug message of the BBBWL
    • sudo minicom -s
    • serial port setup -> Baud: 115200, Device: /dev/ttyUSB0, HFC: NO.
    • save setup as dfl
    • sudo minicon + reset on BBBWL
• Jun 10:
  • Installed fan on BBAI.
  • Tried flashing new image on BBAI but no success, boot log.
  • updating bb.org-overlays on the preinstalled image of BBAI to test LCD4 cape overlay.
• Jun 11:
  • Flashed new image on BBAI (sdcard was causing the problem before).
  • added comments to am5729-beagleboneai.dts
• Jun 12:
  • 4D systems LCD4 not working on BBAI still.
  • started working on servo cape with BBBWl.
• Jun 13:
  • Tested Servo, Load and Relay capes on BBWL.
  • Started working on comms cape with BBWL.
• Jun 14:
  • Partially tested comms cape, can bus and 4-20mA are reamined to be tested.
  • Started working on beagle-tester.

Week 3

• Jun 15:
  • Installed beagle-tester on BBWL.
  • Trying to understand it’s working (running behind the schedule).
• Jun 16:
  • Got the I2C5 virtual cape overlay working on BBAI.
• Jun 17:
  • Created BBAI UART Virtual cape overlays.
    • BBAI UART3
    • BBAI UART5
    • BBAI UART8
    • BBAI UART10
• Jun 18:
  • Got same DT overlay to work on BBB ans BBAI
• Jun 19:
  • Updated BBAI kernel to 4.19.
  • worked on /bone/uart/{1,2,3,4,5} overlays.
• Jun 20:
  • Created initial compatibility layer for BBB and BBAI.
  • Submitted Virtual Cape UART overlays that work on both BBB and BBAI.
• Jun 21:
  • Resolved changes requred in above PRs

Week 4

• Jun 22:
  • Started working on beagle-tester code refactoring.
• Jun 23:
  • Worked on beagle-tester makefile.
• Jun 24:
  • created a post about servo cape testing on BBB
• Jun 25:
  • Rebased compatibility branch.
• Jun 26:
  • Started working on I2C bone buses code.
• Jun 27
  • Completed initial work for I2C bone buses.
    • /bone/i2c overlays
    • Updated compatibility layer
• Jun 28:
  • Started working on SPI bone buses code.

Week 5

• Jun 29:
  • Completed initial work for I2C bone buses.
    • /bone/i2c overlays
    • Updated compatibility layer
  • Started working on comms cape testing (4-20mA and CAN bus were remaining).
• Jun 30:
  • Used logic anaylzer to capture the SPI data.
• Jul 1:
  • Preparing hardware for 4-20mA and can bus testing of comms cape.
• Jul 2:
  • Tested CAN bus of comms cape using MCP2515.
• Jul 3 & Jul 4:
  • Break from work ;)
• Jul 5:
  • Started working on the ultimate easy pinmuxing macros.
• Jul 6:
  • Updated BBAI dts files.
  • Started working on Relay cape.

Week 6

• Jul 7:
  • Relay and Load cape working on BBB and BBAI using same overlay
    • Relay Cape overlay
    • Load Cape overlay
• Jul 8:
  • Started working on new macros for easy BBAI pinmuxing.
• Jul 9:
  • Completed initial work for BBAI pinmuxing macros, will test the code tomorrow.
• Jul 10:
  • pushed BBAI pinmuxing macros
    • Initial combined macros for P8 & P9 headers
    • Update pin header nodes
• Jul 11:
  • Started code clean up.
  • Reading about libgpiod.
• Jul 12:
  • Submitted code cleanup and bug fixing commites.

Week 7

• Jul 13:
  • servoCape and motorCape now work with same DT overlay.
    • servoCape: https://github.com/beagleboard/bb.org-overlays/pull/174
    • motorCape: https://github.com/beagleboard/bb.org-overlays/pull/188
  • Added PWM nodes in compatibility code
  • Tested libgpiod on BBAI using C examples from https://github.com/starnight/libgpiod-example
• Jul 14:
  • Started working on the LCD cape.
• Jul 15:
  • LCD cape not working on BBAI. one of the DT overlay i tried -> https://pastebin.com/0nAqQug5
• Jul 16:
  • Tested more code for LCD, not working still.
• Jul 17:
  • Tried updating & upgrading as rcn-ee suggested but no success still.
• Jul 18:
  • I was out for some work, not able do anything for project today.

Week 8

• Jul 19:
  • Worked on CAN bus, submitted a PR for CAN0 & CAN1
• Jul 20:
  • Started working on UART, I2C, SPI, PWM.
• Jul 21:
  • Submitted PR for bone bus PWM DT overlays.
• Jul 22 - 25:
  • Worked on documentation and examples
    • Updated Cape Interface Spec page.
• Jul 26:
  • Started working on the cape examples.

Week 9

• Jul 27:
  • Started working on pwm-timer.
• Jul 28:
  • submitted PR for pwm-timer.
• Jul 29:
  • Did some reading on PRU.
• Jul 30 & 31:
  • Break from work due to EXAM (BTP presentation).
• Aug 1:
  • Started working on PRU & ADC.
• Aug 2:
  • got cloud9 PRU examples to work on BBAI.

Week 10

• Aug 3:
  • got PRU1_0 & PRU1_1 to work on BBAI, wrote overlays and cloud9 examples for it.
• Aug 4:
  • tried rcn-ee’s testing image (v5.4x)
• Aug 5:
  • tested PRU macros.
• Aug 6:
  • Updated cape interface spec.
• Aug 7:
  • Worked on PRU examples.
• Aug 8:
  • Started working on v5.4x kernel for BBAI
• Aug 9:
  • Got BBBWL working with ecn-ee’s testing image.

Week 11

• Aug 10:
  • Not able to make the compatibility code to work on v5.4x-ti-overlay branch.
• Aug 11:
  • Tried merging compatibility code uisng meld but things didn’t work out well.
  • rcn-ee’s creating 4.19x-ti-overlays and that will solve the issue hopefully.
• Aug 12:
  • Compatibility layer got merged into v4.19.x-ti-overlays branch.
• Aug 13:
  • Submitted UART console example to cloud9-examples.
• Aug 14:
  • updted blinkR30 examples PR.
• Aug 15:
  • Independence Day break 🤩
• Aug 16:
  • added McASP nodes and labels for BBBWL, BBB and BBAI.

Week 12

• Aug 17:
  • added eCAP pinmux nodes.
  • started working on eQEP.
• Aug 18:
  • Completed McASP, eCAP, ADC, and eQEP DT nodes.
• Aug 19:
  • compatibility_update1 has been merged.
• Aug 20:
  • Started working on compatibility_update2.
• Aug 21:
  • Worked in compatibility_update2.
• Aug 22:
  • Created new nodes and cleaned up things for compatibility_update2.
• Aug 23:
  • Completed compatibility_update2 coding.
  • Started Testing i.e. Loading each overlays on boards.

Week 13

• Aug 24:
  • Compatibility update got merged.
• Aug 25:
  • looking into TI SDK for LCD solution.
• Aug 26:
  • Started Working on this site, updated page handling.
  • New Table of content file /_data/toc.yaml for finer control.
• Aug 27:
  • Created new collapsable item for site.description, press 📌to see the message.
  • Updated Blog page for better pagination.
  • LCD4 is working with BBAI now!
    • BBAI-4D4C-00A1.dts
• Aug 28:
  • Finalized cape interface spec page.
• Aug 29:
  • Updated this site, ready to submit GSoC final report.
• Aug 30:
  • Submitted Final evaluation.
• Aug 31:
  • End of my GSoC2020 journey!
  • Will continue to work on this site!