Lup Yuen Lee 李立源 @lupyuen@qoto.org

Let's test GPIO on #BL602 #NuttX ... By enabling the GPIO Driver

https://nuttx.apache.org/docs/latest/quickstart/configuring.html

Let's enable the "help" and "ls" Shell Commands in #BL602 #NuttX

https://nuttx.apache.org/docs/latest/quickstart/configuring.html

Here are the Pin Definitions for #BL602 #NuttX ... We'll change this in a while

https://github.com/apache/incubator-nuttx/blob/master/boards/risc-v/bl602/bl602evb/include/board.h

Though SPI with DMA is not yet supported on #BL602 #NuttX OS

https://github.com/apache/incubator-nuttx/blob/master/arch/risc-v/src/bl602/bl602_spi.c#L734-L761

Here are the #BL602 Peripherals supported by #NuttX OS

https://nuttx.apache.org/docs/latest/platforms/risc-v/bl602/index.html#bl602-peripheral-support

Timer Demo on #BL602 #NuttX opens "/dev/timer0" ... And controls it with "ioctl" and "sigaction" ... Looks like Linux

https://github.com/apache/incubator-nuttx-apps/blob/master/examples/timer/timer_main.c

#BL602 #NuttX "Hello World" ... Looks exactly like on Linux

https://github.com/apache/incubator-nuttx-apps/blob/master/examples/hello/hello_main.c

#NuttX Demo Apps are configured before build with "make menuconfig"

https://nuttx.apache.org/docs/latest/quickstart/configuring.html

Default #BL602 #NuttX Firmware includes 2 Demo Apps: "hello" and "timer"

https://github.com/apache/incubator-nuttx-apps/tree/master/examples/hello

https://github.com/apache/incubator-nuttx-apps/tree/master/examples/timer

#NuttX boots OK on PineCone #BL602 ... Also on PineDio Stack #BL604! 🎉

https://nuttx.apache.org/docs/latest/platforms/risc-v/bl602/index.html

We flash #NuttX Firmware to #BL602 ... With the excellent "blflash" by spacemeowx2

https://github.com/spacemeowx2/blflash

#NuttX #BL602 builds easily on WSL Ubuntu ... Uses plain "make" with "kconfig"

https://nuttx.apache.org/docs/latest/platforms/risc-v/bl602/index.html

#NuttX OS works on Arm, #RISCV and ESP32

https://nuttx.apache.org/docs/latest/platforms/index.html

Apache #NuttX OS is super interesting because 1️⃣ It runs on all kinds of MCUs 2️⃣ Its APIs work like POSIX (Linux-lite)

https://nuttx.apache.org/docs/latest/introduction/about.html

Let's run Apache #NuttX OS on RISC-V #BL602

https://nuttx.apache.org/docs/latest/platforms/risc-v/bl602/index.html

"#WSL: Data Is Invalid" on Windows 10 Insider Preview 🙄

https://github.com/microsoft/WSL/issues/6509

Good old days 🥲

TIL: #BL602's PWM can run below 2 kHz ... Just set the PWM Clock Divider. Many thanks to Chandler! 👍

https://lupyuen.github.io/articles/led#initialise-pwm

No plans to migrate to Bouffalo Lab's Revamped #BL602 IoT SDK and "hosal" HAL ... Because we would need to rewrite "The RISC-V BL602 Book" ... All 37 articles 🤔

https://lupyuen.github.io/articles/lorawan2#notes

I hope @PINE64 will release the #PineDio Family of #LoRa Gadgets real soon! 👍

https://lupyuen.github.io/articles/gateway?17#whats-next