Lup Yuen Lee 李立源 @lupyuen@social.cleverlibre.org

And that's how we flip the ST7789 Data / Command Pin ... Inside the SPI Driver for #BL602 #NuttX!

https://github.com/lupyuen/incubator-nuttx/pull/44

Tested the ST7789 Data / Command Pin with a Logic Analyser ... Yep it works on #BL602 #NuttX! 🎉

https://github.com/lupyuen/incubator-nuttx/pull/44

Spresenseで #NuttX のpthreadsを使用しマルチスレッドを学ぶ #4　〜条件変数で【タイムアウト付き】条件待ちする〜

https://zenn.dev/k_abe/articles/d0b34d410535f6

#Linux on Mobile Weekly Update

https://linmob.net/

Capyloon's web-based OS is now available for mainline #Linux phones (PinePhone Pro and Librem 5)

https://liliputing.com/2022/03/capyloons-web-based-os-is-now-available-for-mainline-linux-phones-pinephone-pro-and-librem-5.html

After every ST7789 SPI Transfer on #BL602 #NuttX, we revert MISO from GPIO Pin back to SPI Pin ... In case other drivers need MISO

https://github.com/lupyuen/incubator-nuttx/blob/st7789/arch/risc-v/src/bl602/bl602_spi.c#L414-L454

To flip the ST7789 Data / Command Pin on #BL602 #NuttX: We reconfigure SPI MISO as a GPIO Pin ... On the fly!

https://github.com/lupyuen/incubator-nuttx/blob/st7789/arch/risc-v/src/bl602/bl602_spi.c#L678-L731

"Chinese Is A Rich Language" (Singapore)

https://youtu.be/rbe308rWbuQ

SPI Driver for #ESP32 #NuttX flips the ST7789 Data / Command Pin as though it was GPIO ... But actually the pin is designated as SPI MISO ... Let's do the same for BL602

https://github.com/apache/incubator-nuttx/blob/master/boards/risc-v/esp32c3/esp32c3-devkit/src/esp32c3_board_spi.c#L64-L84

Making strange changes to #BL602 #NuttX SPI Driver ... Hope this works for ST7789 Display 🙏

https://github.com/lupyuen/incubator-nuttx/blob/st7789/arch/risc-v/src/bl602/bl602_spi.c#L678-L729

ST7789 Display with PineCone #BL602 @PINE64 on Apache #NuttX RTOS ... Coming up next!

"It’s hard to be a moral person. Technology is making it harder" (2021)

https://www.vox.com/the-highlight/22585287/technology-smartphones-gmail-attention-morality

Managing several Displays with the Multi-Screen Window Placement API (JavaScript)

https://web.dev/multi-screen-window-placement/

Here's the SPI Problem on #BL602 #NuttX: SPI Poll Exchange works OK ... But if we call SPI Poll Send (instead of Poll Exchange), the SPI Port is not configured ... And the function hangs!

I'll submit this PR to NuttX soon https://github.com/lupyuen/incubator-nuttx/pull/42

Dyson opens new global HQ in Singapore

https://www.channelnewsasia.com/singapore/dyson-global-headquarters-hq-st-james-power-station-2585726?cid=internal_sharetool_androidphone_25032022_cna

Dongshan Nezha STU devkit features Allwinner D1 #RISCV SoM/SBC

https://www.cnx-software.com/2022/03/25/dongshan-nezha-stu-devkit-features-allwinner-d1-risc-v-som-sbc/

This Week in #RustLang

https://this-week-in-rust.org/blog/2022/03/23/this-week-in-rust-435/

#BL602 #NuttX SPI Driver has a glaringly obvious bug ... Can you spot it? 🤔

Hint: Both SPI Functions are exposed to NuttX Apps

https://github.com/apache/incubator-nuttx/blob/master/arch/risc-v/src/bl602/bl602_spi.c#L763-L930