Lup Yuen Lee 李立源 @lupyuen@qoto.org

Mystery Connector for ST7789 Display ... On #PineDio Stack #BL604 🤔

https://lupyuen.github.io/articles/pinedio#st7789-display

GPIO 8 is your friend ... For flashing #PineDio Stack #BL604

https://lupyuen.github.io/articles/pinedio#flash-firmware-to-bl604

A "Serial Monitor"? 🤔

https://www.reddit.com/r/pcmasterrace/comments/pdpz57/is_this_a_port_to_connect_a_monitor_and_if_so/?utm_medium=android_app&utm_source=share

Yep @JF and I have plenty to test on #PineDio Stack #BL604 @PINE64 ... If you're keen to help please let us know! 🙏

https://lupyuen.github.io/articles/pinedio?18#seeking-volunteers

Maybe our #ST7789 Display isn't wired for 3-Wire (9-Bit) Interface? 🤔

https://lupyuen.github.io/articles/pinedio?17#problem-with-st7789

We ported moononournation's awesome 9-Bit-Banging Arduino GFX Library to #BL604 ... But something seems broken in our #ST7789 Display 🤔

https://lupyuen.github.io/articles/pinedio?16#arduino-gfx-ported-to-bl604

Nope nothing appears on #PineDio Stack's #ST7789 Display 😭

https://lupyuen.github.io/articles/pinedio?15#does-it-work

Testing the 9-Bit Packing ... With Linux and a spreadsheet

https://lupyuen.github.io/articles/pinedio?14#test-the-9-bit-packing

How we pack 9-Bit Data for 8-Bit SPI

https://lupyuen.github.io/articles/pinedio?13#packing-9-bit-data

Sending 9-Bit Data to #ST7789 ... Over 8-Bit SPI? 🤔

https://lupyuen.github.io/articles/pinedio?12#9-bit-spi-for-st7789

#PineDio Stack uses the 3-Wire Interface for #ST7789 ... Instead of the familiar 4-Wire Interface

https://lupyuen.github.io/articles/pinedio?11#st7789-display

#BL604 SPI Pins are Swapped! 🙄 Here's the workaround for #PineDio Stack

https://lupyuen.github.io/articles/pinedio?10#spi-pins-are-swapped

Always have a Logic Analyser ready ... When testing Prototype Hardware! 👍

https://lupyuen.github.io/articles/pinedio?9#logic-analyser

SPI with DMA on #PineDio Stack #BL604

https://lupyuen.github.io/articles/pinedio?8#transfer-spi-data

How we init the #PineDio Stack #BL604 SPI Port

https://lupyuen.github.io/articles/pinedio?7#initialise-spi-port

SPI Bus on #PineDio Stack #BL604 ... Shared by ST7789 Display, LoRa SX1262 and SPI Flash

https://lupyuen.github.io/articles/pinedio?6#bl604-spi

Flashing Firmware to #PineDio Stack #BL604 ... With the same tools as BL602!

https://lupyuen.github.io/articles/pinedio?5#flash-firmware-to-bl604

#BL604 Blinky Firmware ... Exactly the same as #BL602!

https://lupyuen.github.io/articles/pinedio?4#bl604-blinky

Connecting #PineDio Stack BL604 @PINE64 ... To a super-familiar ST7789 SPI Display

https://lupyuen.github.io/articles/pinedio?3#connect-the-display

Solar Panel @PINE64 ... With hidden treasure inside

https://lupyuen.github.io/articles/pinedio?2