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

🙄 "an unauthorized party acquired certain Personal Data from a system connected to our online portal, #NXP .com"

UART is not ready to Transmit on Apache #NuttX RTOS for Star64 #JH7110 ... Let's find out why

Article: https://lupyuen.codeberg.page/articles/plic.html#star64-vs-qemu-serial-io

Star64 #JH7110 Display Driver ... Gets very complicated 😬

Source: https://github.com/lupyuen/nuttx-star64#direct-rendering-manager-driver-for-dc8200

Apache #NuttX RTOS handles UART Interrupts for Serial Input

Article: https://lupyuen.codeberg.page/articles/plic.html#serial-input-in-nuttx-qemu

Serial Output in Apache #NuttX RTOS works like this

Article: https://lupyuen.codeberg.page/articles/plic.html#serial-output-in-nuttx-qemu

Inside Star64 #JH7110 is the DC8200 Dual Display Controller ... Which is totally undocumented 🙄

Source: https://github.com/lupyuen/nuttx-star64#dc8200-display-controller-for-star64-jh7110

#NuttX Apps on Star64 #JH7110 won't produce any Console Output ... Let's find out why

Article: https://lupyuen.codeberg.page/articles/plic.html#no-console-output-from-nuttx-apps

Apache #NuttX RTOS on @PINE64 Star64 #JH7110 #RISCV SBC has a problem with Serial I/O and the Platform-Level Interrupt Controller (PLIC) ... Here's how we fixed it

Article: https://lupyuen.codeberg.page/articles/plic

Will HDMI work with Star64 #JH7110 and Apache #NuttX RTOS? Let's figure out 🤔

Source: https://github.com/lupyuen/nuttx-star64#hdmi-display-for-star64-jh7110

Finally we boot Apache #NuttX RTOS on Star64 #JH7110 with an Initial RAM Disk (initrd)

Article: https://lupyuen.codeberg.page/articles/semihost.html#nuttx-star64-with-initial-ram-disk

#RISCV PineTab-V #JH7110 Schematic

Source: https://wiki.pine64.org/wiki/PineTab-V#Schematics_and_certifications

Here's how we boot Apache #NuttX RTOS on QEMU with an Initial RAM Disk (initrd)

Article: https://lupyuen.codeberg.page/articles/semihost.html#boot-nuttx-qemu-with-initial-ram-disk

Let's modify Apache #NuttX RTOS for QEMU ... To load the Initial RAM Disk (initrd) at startup

Article: https://lupyuen.codeberg.page/articles/semihost.html#modify-nuttx-qemu-for-initial-ram-disk

Automated Daily Builds of Apache #NuttX RTOS for Star64 #JH7110 SBC ... Maybe we'll run Automated Daily Tests over TFTP 🤔

Source: https://github.com/lupyuen/nuttx-star64#nuttx-automated-daily-build-for-star64

Semihosting is needed by Apache #NuttX RTOS on QEMU ... To access the Apps Filesystem

Article: https://lupyuen.codeberg.page/articles/semihost.html#semihosting-on-nuttx-qemu

Inside the Apps Filesystem for Apache #NuttX RTOS

Article: https://lupyuen.codeberg.page/articles/semihost.html#nuttx-apps-filesystem

Now doing #NuttX on PineCone, PinePhone, PinePhone Pro, Star64 AND PineTab-V ... Life gets super exciting! 👍

Source: https://github.com/lupyuen

[Work in Progress] #PinePhonePro with Apache #NuttX RTOS! 👍

Source: https://github.com/apache/nuttx/pull/10193

Apache #NuttX RTOS for QEMU calls Semihosting ... To access the Host File System

Article: https://lupyuen.codeberg.page/articles/semihost.html#nuttx-calls-semihosting

#RISCV EBREAK Instruction is used for Semihosting ... Like breaking out of the #QEMU Virtual Machine to do powerful things

Article: https://lupyuen.codeberg.page/articles/semihost.html#decipher-the-risc-v-exception