Lup Yuen Lee 李立源 @lupyuen@qoto.org

"Tauri vs Flutter"

https://www.reddit.com/r/rust/comments/pb4bqm/tauri_or_flutter/?utm_medium=android_app&utm_source=share

"Developers that bundle ever more features into a Super App risk frustrating users"

https://www.channelnewsasia.com/commentary/super-app-grab-gojek-taxi-food-delivery-pay-big-tech-2135026

Weekly #Linux Phone news / media roundup

https://linmob.net/linbits-59-weekly-linux-phone-news-week33-34/

Intro to JQ, the command-line JSON processor

https://earthly.dev/blog/jq-select/

The Search for a FLOSS Mobile OS

https://blog.emacsen.net/blog/2021/08/23/floss-mobile-os-aug-2021/

GPIO 4 works as MOSI but not GPIO 17 ... What if we connect GPIO 4 to 17? Nope still nothing on the #PineDio Stack ST7789 Display 🤔

Which is super strange because GPIO 4 is supposed to be MISO on #BL604 ... Not MOSI! 🤔

https://lupyuen.github.io/articles/spi#spi-data-pins-are-flipped

Yep #BL604 MOSI works if we switch to GPIO 4 ... So what's wrong with GPIO 17? 🤔

#BL604 doesn't seem to be transmitting anything to ST7789 on SPI MOSI (GPIO 17) ... Let's try a different pin for MOSI

ST7789's CS Pin (GPIO 20) is not exposed on #PineDio Stack's GPIO Connector ... So we use GPIO 5 to Shadow the CS Pin

https://github.com/lupyuen/bl_iot_sdk/blob/3wire/customer_app/pinedio_st7789/pinedio_st7789/display.c#L504-L534

#PineDio Stack SPI Port is exposed on the GPIO Connector ... So we connect our Logic Analyser there

https://github.com/lupyuen/bl_iot_sdk/blob/3wire/customer_app/pinedio_st7789/pinedio_st7789/display.h#L48-L58

Let's connect a Logic Analyser to #PineDio Stack #BL604 ... And troubleshoot the SPI connection to ST7789 Display

"Yoshizawa–Randlett system is a diagramming system used to describe the folds of origami models"

https://en.m.wikipedia.org/wiki/Yoshizawa%E2%80%93Randlett_system

Old iPhones become faster if you change the region to France

https://www.gizchina.com/2021/08/23/old-iphones-become-faster-if-you-change-the-region-to-france/

Reliable Firmware Updates for the Information-Centric #IoT

https://arxiv.org/abs/2108.09555

Verifying the packed #ST7789 9-bit data with a spreadsheet ... Our packing is indeed correct 🤔

https://docs.google.com/spreadsheets/d/1Qy0MjU79s__wzTAFwpTYUUIzLWcrFnKCrvvo_rHamiE/edit?usp=sharing

Chip shortage set to worsen as Covid-19 rampages through Malaysia (STMicro, NXP, Infineon)

https://www.straitstimes.com/asia/se-asia/chip-shortage-set-to-worsen-as-covid-19-rampages-through-malaysia

#PineDio Stack SPI Port is exposed on the GPIO Connector ... Shall we connect a Logic Analyser to troubleshoot #ST7789 Display? 🤔

https://github.com/lupyuen/bl_iot_sdk/blob/3wire/customer_app/pinedio_st7789/pinedio_st7789/demo.c#L227-L2661