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

... Channelling my inner Bob Ross 😂

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

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

#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

"Why did I leave #Google or, why did I stay so long?"

https://paygo.media/p/25171

129,000 #Singtel customers' personal information, including NRIC details, stolen in data breach

https://www.channelnewsasia.com/news/singapore/singtel-data-breach-customer-information-stolen-nric-14219268

#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 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 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

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

@memiks I think an I2C GPIO Extender might be good ... Since most of the pins I need are plain GPIOs: https://www.tindie.com/products/SwitchDocLabs/8-gpio-extender-board-i2c-controlled/

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

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

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

...And that was one of many Kitchen Sink Photos I've taken 😉

https://github.com/lupyuen/lupyuen.github.io/blob/master/images/display-backlight.jpg

Connecting #ST7789's Backlight Pin (BLK) to 3V3 saves us one precious #BL602 Pin ... But we won't be able to switch off the backlight and reduce Power Consumption

https://lupyuen.github.io/articles/display#connect-bl602-to-st7789-spi-display

I would expect ALL Microcontrollers to provide a decent Hardware Abstraction Layer, please 🙏

http://cowlark.com/2021-02-16-fuzix-pi-pico/

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

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

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

This #EInk Display is powered by #STM32 F031 ... Interesting! 🤔
https://wiki.seeedstudio.com/Grove-Triple_Color_E-Ink_Display_2_13/