Lup Yuen Lee 李立源 @lupyuen@qoto.org

Since our #ST7789 Driver Code is in C, let's test it locally on Linux!

https://github.com/lupyuen/bl_iot_sdk/blob/3wire/customer_app/pinedio_st7789/pinedio_st7789/display.c

We're sending SPI data to #ST7789 in multiples of 9 Bytes ... Due to the 9-bit packing

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

Packed #ST7789 9-bit data looks correct ... But nothing appears on #PineDio Stack Display 🤔

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

Now we test the code that packs #ST7789 9-bit data into 8-bit SPI

https://github.com/lupyuen/bl_iot_sdk/blob/3wire/customer_app/pinedio_st7789/pinedio_st7789/display.c#L338-L404

How we pack 9-bit #ST7789 data ... Into 8-bit SPI

https://github.com/lupyuen/bl_iot_sdk/blob/3wire/customer_app/pinedio_st7789/pinedio_st7789/display.c#L299-L406

"Loon"? Oh dear...

https://edition.cnn.com/2021/08/23/politics/kamala-harris-singapore-afghanistan/index.html

Normally we talk to #ST7789 SPI Display in 4-Wire (8-bit) Mode ... But today we do 3-Wire (9-bit) Mode ... With a sneaky packing hack

https://www.rhydolabz.com/documents/33/ST7789.pdf

#PineDio Stack #BL604 is connected to ST7789 Display in 3-Wire (9-bit) Mode ... Let's make it work with 8-bit SPI 🤔

https://www.rhydolabz.com/documents/33/ST7789.pdf

BL602 Firmware runs OK on PineDio Stack #BL604 @PINE64 ... Here's our Blinky Firmware

https://github.com/lupyuen/bl_iot_sdk/blob/3wire/customer_app/pinedio_blinky/pinedio_blinky/demo.c

Yep PineDio Stack has #BL604 #RISCV + WiFi SoC onboard ... Plus #LoRa SX1262! How would you use this? Lemme know! 🙏

https://www.pine64.org/2021/08/15/introducing-the-pinenote/

Voilà! Solar Panel with Touchscreen inside 😂

https://www.pine64.org/2021/08/15/introducing-the-pinenote/

Yep the Touchscreen snaps into #PineDio Stack #BL604

https://www.pine64.org/2021/08/15/introducing-the-pinenote/

Underside of #PineDio Stack #BL604 @PINE64 ... I see the LCD Connector! Sorry I grazed the board (top hole) 🙏

https://www.pine64.org/2021/08/15/introducing-the-pinenote/

Our Transcoder converts #Rhai Loops and Conditions to uLisp #BL602 too!

https://github.com/lupyuen/bl602-simulator/tree/transcode/bl602-script#transcode-rhai-script-to-ulisp

Super familiar touchscreen ... Will it connect with #PineDio Stack? 🤔

https://www.pine64.org/2021/08/15/introducing-the-pinenote/

Mystery Connector at edge of #PineDio Stack #BL604 🤔

https://www.pine64.org/2021/08/15/introducing-the-pinenote/

Hello #PineDio Stack #BL604 @PINE64 👋 ... Hope I don't need to unscrew the board 🤔

https://www.pine64.org/2021/08/15/introducing-the-pinenote/

Secret Treasure inside Solar Panel 🤔

Solar Panel ... With a JTAG Port? 🤔

Our #Rhai Script transcoded into uLisp #BL602 runs correctly! 🎉

https://github.com/lupyuen/bl602-simulator/blob/transcode/bl602-script/src/transcode.rs#L393-L622