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

Let's patch the #NuttX UART Driver ... So it will print to the #Ox64 BL808 Serial Console

Source: https://github.com/lupyuen/nuttx-ox64#fix-the-nuttx-uart-driver-for-ox64-bl808

Here's how we set the Boot Address of #Ox64 BL808 in Apache #NuttX RTOS

Source: https://github.com/lupyuen/nuttx-ox64#update-the-nuttx-boot-address-for-ox64-bl808

TFTP Timeout seems specific to JH7110 #UBoot ... We might need to dig inside U-Boot's JH7110 Network Driver and TFTP Client

Article: https://lupyuen.codeberg.page/articles/tftp2.html#all-things-considered

#Ox64 BL808 #RISCV SBC boots a tiny bit of Apache #NuttX RTOS 🎉

Source: https://github.com/lupyuen/nuttx-ox64#print-to-ox64-serial-console-in-nuttx-boot-code

When we Throttle our TFTP Server ... #UBoot Bootloader still shows TFTP Timeouts

Article: https://lupyuen.codeberg.page/articles/tftp2.html#throttle-tftp-server

Here's how we print to the #Ox64 BL808 Serial Console ... In #RISCV Assembly!

Source: https://github.com/lupyuen/nuttx-ox64#print-to-ox64-serial-console-in-nuttx-boot-code

TFTP Timeouts in #UBoot Bootloader ... Other folks might have the same problem

Article: https://lupyuen.codeberg.page/articles/tftp2.html#anyone-else-seeing-this

Apache #NuttX RTOS on #Ox64 BL808 #RISCV SBC ... Our very first Stack Dump! 🎉

Source: https://github.com/lupyuen/nuttx-ox64#fix-the-nuttx-uart-driver-for-ox64-bl808

Booting Star64 #NuttX on Ox64 #BL808 shows nothing ... Let's add some logs

Source: https://github.com/lupyuen/nuttx-ox64#boot-apache-nuttx-rtos-on-ox64-bl808

😬 My horrigible soldering of #RISCV Ox64 #BL808 @PINE64

Article: https://lupyuen.codeberg.page/articles/ox64.html

Sending every TFTP Packet twice to #UBoot Bootloader ... Will increase our transfer rate from 390 kbps to 8 Mbps! 👍

Article: https://lupyuen.codeberg.page/articles/tftp2.html#no-more-timeouts

#RISCV Ox64 #BL808 SBC ... Boots a tiny bit of Apache #NuttX RTOS! 🎉

Source: https://github.com/lupyuen/nuttx-ox64#boot-apache-nuttx-rtos-on-ox64-bl808

BL DevCube 1.8.4 (and later) might not flash Ox64 #BL808 correctly 😬 ... Best to stick with 1.8.3

Source: https://github.com/lupyuen/nuttx-ox64#flash-opensbi-and-u-boot-bootloader-to-ox64-bl808

Sending every TFTP Packet Twice ... Fixes the TFTP Timeouts in #UBoot Bootloader 🤔

Article: https://lupyuen.codeberg.page/articles/tftp2.html#send-everything-twice

Some USB Serial Adapters won't work with Ox64 #BL808! 😬 ... 2 Mbps might be too fast for some USB dongles

Source: https://github.com/lupyuen/nuttx-ox64#flash-opensbi-and-u-boot-bootloader-to-ox64-bl808

Let's fix the TFTP Timeouts in the #RISCV Star64 #JH7110 U-Boot Bootloader ... With a Strange Workaround 🤔

Article: https://lupyuen.codeberg.page/articles/tftp2

Clickety Micro USB Cable is super handy for rebooting #RISCV Ox64 #BL808 SBC 👍

Source: https://github.com/lupyuen/nuttx-ox64#flash-opensbi-and-u-boot-bootloader-to-ox64-bl808

#RISCV is a complex creature in Ox64 #BL808 🤔

Source: https://github.com/lupyuen/nuttx-ox64

UART Ports get messy on #RISCV Ox64 #BL808 ... Can we make this easier? 🤔

Source: https://github.com/lupyuen/nuttx-ox64#flashing-uart-vs-serial-console

Fear of soldering Ox64 #BL808 😬 ... This Wire Wrap will do for now

Source: https://github.com/lupyuen/nuttx-ox64#boot-linux-on-ox64-bl808