Lup Yuen Lee 李立源 @lupyuen@qoto.org

Quick check of #BL602 Boot2 Disassembly ... To be sure that it matches the Boot2 Bootloader that we have been flashing to BL602. Great exercise for learning #RISCV Assembly! 👍

https://github.com/lupyuen/bl_iot_sdk/releases/download/v8.0.2/bl602_boot2.S

A smart home consumer's wish list

https://raymondjulin.com/blog/a-smart-home-consumers-wish-list

MyCobot robotic arm is offered with Raspberry Pi 4 or M5Stack ESP32 modules

https://www.cnx-software.com/2021/05/30/mycobot-robotic-arm-is-offered-with-raspberry-pi-4-or-m5stack-esp32-modules/

"She memorised IBM typewriter codes for 5,400 Chinese characters but couldn’t save tech giant’s ill-fated machine"

https://www.scmp.com/magazines/post-magazine/long-reads/article/3135053/she-memorised-ibm-typewriter-codes-5400-chinese

"Best #embedded device to learn #RustLang?"

https://www.reddit.com/r/embedded/comments/noa0rs/best_embedded_device_to_learn_rust/?utm_medium=android_app&utm_source=share

"I lost millions through #cryptocurrency addiction"

https://www.bbc.com/news/uk-scotland-57268024

When #BL602 boots, it runs the Boot2 Bootloader Firmware at 0x2300 0000 ... Which loads the Application Firmware into (yikes!) 0x2300 0000 ... Let's investigate how the Bootloader makes this self-overlay possible

https://github.com/lupyuen/bl_iot_sdk/blob/master/tools/flash_tool/bl602/builtin_imgs/blsp_boot2.map#L6884

#BL602 Linker Map shows Boot2 Code is always loaded at 0x2300 0300 ... Let's find out what's inside

https://github.com/lupyuen/bl_iot_sdk/releases/download/v8.0.1/sdk_app_blinky.map

My hunch: #BL602 Boot2 and ESP32 Secure Boot V2 have similar bootloader features 🤔

https://docs.espressif.com/projects/esp-idf/en/latest/esp32/security/secure-boot-v2.html

#BL602 "Boot2" ... The Boot Code that starts every BL602 Firmware ... Shall I unravel and document the code? 🤔

https://github.com/bouffalolab/bl_iot_sdk/tree/master/customer_app/bl602_boot2/bl602_boot2

Six-axis manipulation robot sells for $699

http://linuxgizmos.com/six-axis-manipulation-robot-based-on-raspberry-pi-4b-sells-for-699/

"The #RISCV #BL602 Book" ... Everything about BL602 spanning 18 articles ... And still growing! 👍

https://lupyuen.github.io/articles/book

"Amazon Web Services has come under fire for lack of hard spending limits on accounts, after some users reported unexpected bills from what they thought were tutorial accounts"

https://www.theregister.com/2021/05/28/aws_free_tier/

Sipeed RV-Debugger Plus: UART & JTAG board comes with BL702 Zigbee & BLE #RISCV SoC

https://www.cnx-software.com/2021/05/28/rv-debugger-plus-uart-jtag-debug-board-bl702-zigbee-ble-risc-v-soc/

An Intuition for #Lisp Syntax

https://stopa.io/post/265

"Blog about what you've struggled with"

https://jvns.ca/blog/2021/05/24/blog-about-what-you-ve-struggled-with/

Lazada fails to catch up to Shopee, while parent company Alibaba loses 33% in value

https://vulcanpost.com/747214/lazada-shopee-alibaba-e-commerce/

uLisp for #PineTime Smartwatch? 🤔

https://www.reddit.com/r/PINE64official/comments/nm70kz/simulate_riscv_bl602_with_webassembly_ulisp_and/?utm_medium=android_app&utm_source=share

Ah Heng Chicken Curry Bee Hoon Mee (Michelin Recommended)

https://danielfooddiary.com/2019/03/07/ahheng/

"Where to start learning C for #embedded ?"

https://www.reddit.com/r/C_Programming/comments/nm1isg/where_to_start_learning_c_for_embedded/?utm_medium=android_app&utm_source=share