Running Apache #NuttX RTOS on #PineDio Stack #BL604 @PINE64 ... All shall be explained in this article

https://lupyuen.github.io/articles/pinedio2?1

Fun Experiments with Apache #NuttX RTOS ... On #PineDio Stack #BL604

https://lupyuen.github.io/articles/pinedio2?2#what-is-nuttx

Here's how we build Apache #NuttX RTOS for #PineDio Stack #BL604

https://lupyuen.github.io/articles/pinedio2?3#build-nuttx

Unwrapping #PineDio Stack #BL604 @PINE64

https://lupyuen.github.io/articles/pinedio2?4#prepare-pinedio-stack

How we flash Apache #NuttX RTOS to #PineDio Stack #BL604

https://lupyuen.github.io/articles/pinedio2?5#flash-pinedio-stack

Apache #NuttX RTOS boots with a Pink Screen on #PineDio Stack #BL604

https://lupyuen.github.io/articles/pinedio2?6#boot-pinedio-stack

Rendering our own text and graphics with #LVGL on #PineDio Stack #BL604

https://lupyuen.github.io/articles/pinedio2?7#nuttx-apps

#NuttX Apps bundled with #PineDio Stack #BL604 ... Includes BASIC Interpreter!

https://lupyuen.github.io/articles/pinedio2?8#more-apps

#PineDio Stack #BL604 connects ST7789 Display, LoRa SX1262 and SPI Flash to a Shared SPI Bus ... Here's how we modded #NuttX RTOS to support this

https://lupyuen.github.io/articles/pinedio2?9#appendix-shared-spi-bus

Swapping SPI MISO and MOSI on the fly ... Because ST7789 is wired "backwards" on #PineDio Stack #BL604

https://lupyuen.github.io/articles/pinedio2?10#swap-miso--mosi

Pin Definitions for #PineDio Stack #BL604 on Apache #NuttX RTOS

https://lupyuen.github.io/articles/pinedio2?11#pin-definitions

#NuttX handles the Shared SPI Bus on #PineDio Stack #BL604 ... By looking up the SPI Device Table

https://lupyuen.github.io/articles/pinedio2?12#select--deselect-spi-device

How we flip MISO or MOSI as the ST7789 Data / Command Pin ... For #NuttX on #PineDio Stack #BL604

https://lupyuen.github.io/articles/pinedio2?15#spi-command--data

Shared SPI Bus works OK on #PineDio Stack #BL604 ... While #NuttX swaps MISO and MOSI on the fly! 🎉

https://lupyuen.github.io/articles/pinedio2?16#test-shared-spi-bus

#BL602 talks to ST7789 Display in SPI Mode 1 or Mode 3 ... Here's why

https://lupyuen.github.io/articles/pinedio2?18#st7789-spi-mode

Fixing a Race Condition with SPI Chip Select ... For #NuttX on #PineDio Stack #BL604

https://lupyuen.github.io/articles/pinedio2?17#sx1262-chip-select

#LoRa and LoRaWAN work great on #PineDio Stack #BL604!

https://lupyuen.github.io/articles/pinedio2?19#appendix-sx1262-lora-transceiver

Here's how we test #LoRa on #PineDio Stack #BL604

https://lupyuen.github.io/articles/pinedio2?20#test-lora

Testing #LoRaWAN on #PineDio Stack #BL604 with Apache #NuttX RTOS

https://lupyuen.github.io/articles/pinedio2?21#test-lorawan

#PineDio Stack #BL604 supports CBOR Encoding for LoRa messages

https://lupyuen.github.io/articles/pinedio2?22#test-cbor-encoder

All 23 GPIOs used by #PineDio Stack #BL604 ... Interesting muxing! 🤔

https://lupyuen.github.io/articles/pinedio2?24#appendix-gpio-assignment

#NuttX Features bundled for #PineDio Stack #BL604

https://lupyuen.github.io/articles/pinedio2?27#appendix-bundled-features

Handling 23 GPIOs on #BL604 with Apache #NuttX RTOS ... GPIO Expander can help!

https://lupyuen.github.io/articles/pinedio2?23#gpio-expander

Push Button on #PineDio Stack #BL604 will appear as "/dev/buttons"

https://lupyuen.github.io/articles/pinedio2?25#push-button

Porting #PineDio Stack #BL604's Touch Panel Driver to Apache #NuttX RTOS

https://lupyuen.github.io/articles/pinedio2?26#touch-panel

2 types of SPI Flash on #PineDio Stack #BL604 ... Wonder why 🤔

https://lupyuen.github.io/articles/pinedio2?28#spi-flash

We need SPI DMA on #BL602 for better multitasking

https://lupyuen.github.io/articles/pinedio2?29#spi-direct-memory-access

Automated Testing on #PineDio Stack #BL604

https://lupyuen.github.io/articles/pinedio2?30#automated-testing