Lup Yuen Lee 李立源 @lupyuen@qoto.org

...Or use a real Logic Analyser ... To debug the #BL602 SPI Bus? 🤔

https://www.seeedstudio.com/LA2016-Logic-Analyzer-p-2218.html

🤔 "Covid-19 not an excuse to ditch Chinese New Year tradition"

https://www.straitstimes.com/opinion/forum/forum-covid-19-not-an-excuse-to-ditch-chinese-new-year-tradition

Potential Bug in #BL602 SPI HAL

https://github.com/bouffalolab/bl_iot_sdk/blob/master/components/hal_drv/bl602_hal/hal_spi.c#L243

Will we know if the #TraceTogether AES Decryption Key has been leaked ... Or cracked? 🤔

Contemplating my Life Choices ... Erm whether I should use #BusPirate to sniff the #BL602 SPI Bus 🤔

http://dangerousprototypes.com/docs/SPI#SPI_Bus_sniffer

Wonder who holds the #TraceTogether AES Decryption Key 🤔

https://www.channelnewsasia.com/news/singapore/trace-together-data-police-use-tougher-penalties-bill-parliament-14086650

#BME280 SPI tests OK with #BusPirate

https://github.com/lupyuen/bl_iot_sdk/blob/spi/customer_app/sdk_app_spi/sdk_app_spi/demo.c#L157-L219

RIOT OS powered balloon with #LoRaWAN sensors

https://www.hackster.io/project-riot-20-21-team-miniloon-haw-hamburg/miniloon-60a9c9

Let's test #BME280 SPI with #BusPirate

...And why did the #PineCone #BL602 WiFi Light (top LED) switch on? 🤔

Aha #BL602 SPI DMA is now Transmitting AND Receiving! The SPI Mode was incorrect ... Got confused between the AliOS docs and the BL602 implementation 🙁

Received SPI Data is garbage though 🤔

https://github.com/lupyuen/bl_iot_sdk/blob/spi/customer_app/sdk_app_spi/sdk_app_spi/demo.c#L49-L67

#BL602 SPI DMA uses a Linked List of DMA requests ... Let's dump the DMA Linked List and verify the SPI Transmit and Receive requests

https://github.com/lupyuen/bl_iot_sdk/blob/spi/components/hal_drv/bl602_hal/hal_spi.c#L160-L199

#BL602 SPI Transmit seems OK but not SPI Receive ... After calling "hal_spi_init" 🤔

https://github.com/lupyuen/bl_iot_sdk/blob/spi/components/hal_drv/bl602_hal/hal_spi.c#L826-L876

LinBits 30: Weekly #Linux Phone news

https://linmob.net/2021/01/31/linbits30-weekly-linux-phone-news-week4.html

What is #OpenSource?

https://openeveryone.substack.com/p/what-is-open-source

Building a microcluster with RockPro64

https://mattbernhard.medium.com/building-a-microcluster-812b176e2f76

These 2 #BL602 SPI Functions are begging me to call them ... Phew this SPI HAL is confusing 🤔

https://github.com/lupyuen/bl_iot_sdk/blob/spi/components/hal_drv/bl602_hal/hal_spi.c#L405