Arg this #EInk Display has no documented protocol ... Guess we'll have to read the Arduino code and talk UART to STM32 F031 🤔

https://github.com/Seeed-Studio/Grove_Triple_Color_E-lnk_2.13/blob/master/examples/Eink_factory_code_213/Eink_factory_code_213.ino

Where's the #STM32 F031 (Cortex-M0) source code for this Grove #EInk Display? 🤔 I'm curious too

https://github.com/Seeed-Studio/Grove_Triple_Color_E-lnk_2.13/issues/3

Let's do #BL602 UART with the Low Level HAL ... Without AliOS 😉

https://pine64.github.io/bl602-docs/Examples/demo_peripherals_uart_echo/uart_echo.html

Grove #EInk Display runs on a cute UART protocol: "c" ... "a" ... "b" 😂

https://github.com/Seeed-Studio/Grove_Triple_Color_E-lnk_2.13/blob/master/examples/Eink_factory_code_213/Eink_factory_code_213.ino#L419

Am I supposed to feel Pain with Grove #EInk Display ... ? Getting worried 🤔

https://wiki.seeedstudio.com/Grove-Triple_Color_E-Ink_Display_2_13/

Let's connect Grove #EInk Display to #BL602 at Pins 3 and 4 ... The second UART Port in BL602 Device Tree

https://lupyuen.github.io/articles/flash#uart

#BL602 doing the UART Handshake with Grove #EInk Display ... Good Board!

https://github.com/lupyuen/bl_iot_sdk/blob/eink/customer_app/sdk_app_uart_eink/sdk_app_uart_eink/demo.c

#BL602 UART Handshake with Grove #EInk Display works OK yay! Good Board!

https://github.com/lupyuen/bl_iot_sdk/blob/eink/customer_app/sdk_app_uart_eink/sdk_app_uart_eink/demo.c

#BL602 UART Port sends pixels to Grove #EInk Display ... Black Pixels then Red Pixels

https://github.com/lupyuen/bl_iot_sdk/blob/eink/customer_app/sdk_app_uart_eink/sdk_app_uart_eink/demo.c

#BL602 UART renders an image on Grove #EInk Display yay! But first we need to fix the pixel encoding for this hot mess 🤔

https://github.com/lupyuen/bl_iot_sdk/blob/eink/customer_app/sdk_app_uart_eink/sdk_app_uart_eink/demo.c

Mopped up the hot mess on Grove #EInk Display ... Are you seeing what I'm seeing, #BL602?

https://github.com/lupyuen/bl_iot_sdk/blob/eink/customer_app/sdk_app_uart_eink/sdk_app_uart_eink/demo.c

Grove #EInk Display supports 3 colours: Black, White and Red ... Let's use Red to fill in as Grey ... Here's the #RustLang code for converting Greyscale PNG to Black and Red Bitmaps

https://github.com/lupyuen/pinetime-graphic/blob/master/src/main.rs#L99-L148

... Channelling my inner Bob Ross 😂

Today's "Catchphrase" is ... "#BL602 Pushing Pixels" 😂 ... Or maybe "BL602 Haunts My Dreams" 🤔

https://github.com/lupyuen/bl_iot_sdk/blob/eink/customer_app/sdk_app_uart_eink/sdk_app_uart_eink/demo.c

How we use Red to fill in as Grey ... On Grove #EInk Display

https://github.com/lupyuen/pinetime-graphic/blob/master/src/main.rs#L99-L153

Yep Grove #EInk Display doesn't need power from #PineCone #BL602 @PINE64 ... Unless we're pushing pixels to the display

https://github.com/lupyuen/bl_iot_sdk/blob/eink/customer_app/sdk_app_uart_eink/sdk_app_uart_eink/demo.c

#PineCone #BL602 @PINE64 talking #UART to Grove #EInk Display ... All shall be explained in this (short) article ... Thanks for watching the 24-hour #RISCV BL602 Hackathon! 🙏

https://lupyuen.github.io/articles/uart

@lupyuen Everything looks just a little bloody :P

@brandon Haha yeah... Don't look too close 😉