**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 16, 2021, 00:43

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 16, 2021, 00:43

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Lup Yuen Lee 李立源 @lupyuen@qoto.org

21.6K Posts

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Pronouns/Gender/Sexuality: He/Him/They, Bisexual/Asexual 🇸🇬

Date of Birth: 1969

Twitter: https://twitter.com/MisterTechBlog

Articles: https://lupyuen.org

IoT Techie and Educator / Apache NuttX PMC

Joined Jan 2020

1.92K Following 2K Followers

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Apr 16, 2021, 00:43

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Semtech's Reference Implementation of #LoRa SX1262 Driver is a little odd ... It doesn't process interrupts automatically! Fortunately on #BL602 FreeRTOS we can easily forward the interrupt to the Application Task for processing

https://github.com/lupyuen/bl_iot_sdk/blob/sx1262/components/3rdparty/lora-sx1262/src/radio.c#L1249-L1267

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**Lup Yuen Lee 李立源** · Apr 15, 2021, 23:53

Lup Yuen Lee 李立源 boosted

**federico** @federico3@mastodon.social · Apr 15, 2021, 23:53

Apr 15, 2021, 23:53

federico @federico3@mastodon.social

@lupyuen
This is exactly what #Nim fits best.

**Lup Yuen Lee 李立源** · Apr 16, 2021, 00:28

Lup Yuen Lee 李立源 boosted

**Blort™ 🐀Ⓥ🥋☣️** @Blort@social.tchncs.de · Apr 16, 2021, 00:28

Apr 16, 2021, 00:28

Blort™ 🐀Ⓥ🥋☣️ @Blort@social.tchncs.de

@lupyuen @PINE64

PineRa? (Kind of references the Egyptian sun god, too...)

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 15, 2021, 23:50

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 15, 2021, 23:50

Apr 15, 2021, 23:50

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Seeking #LoRa names @PINE64

https://www.pine64.org/2021/04/15/april-update-new-developments/

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**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 15, 2021, 23:25

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 15, 2021, 23:25

Apr 15, 2021, 23:25

Lup Yuen Lee 李立源 @lupyuen@qoto.org

"High-level language for #embedded systems that is faster than Micropython?"

https://www.reddit.com/r/embedded/comments/mr9uxx/highlevel_language_for_embedded_systems_that_is/?utm_medium=android_app&utm_source=share

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 15, 2021, 23:22

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 15, 2021, 23:22

Apr 15, 2021, 23:22

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Why #RustLang Strings seem hard

https://www.brandons.me/blog/why-rust-strings-seem-hard

**Lup Yuen Lee 李立源** · Apr 15, 2021, 12:43

Lup Yuen Lee 李立源 boosted

**jeancf** @jeancf@mastodon.social · Apr 15, 2021, 12:43

Apr 15, 2021, 12:43

jeancf @jeancf@mastodon.social

I just launched a new bot replicating the feed of CNX-Software on Twitter.

If like me you are interested in electronics and microcontrollers this is a very good one to follow.

@cnxsoft

Others on my list of favorites:
@lupyuen
@hackaday @hackster_io

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 15, 2021, 13:04

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 15, 2021, 13:04

Apr 15, 2021, 13:04

Lup Yuen Lee 李立源 @lupyuen@qoto.org

RAKwireless #WisBlock receives #LoRa Packets ... From #PineCone #BL602 connected to #Pine64 LoRa Module! 🎉 Now we do the other way ... WisBlock sending LoRa Packets to BL602

https://github.com/lupyuen/wisblock-lora-receiver

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**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 15, 2021, 11:18

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 15, 2021, 11:18

Apr 15, 2021, 11:18

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Awesome #LoRa Goodies @PINE64 ... Many thanks to RAKwireless 👍

https://www.pine64.org/2021/04/15/april-update-new-developments/

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 15, 2021, 11:11

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 15, 2021, 11:11

Apr 15, 2021, 11:11

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Huge relief because HopeRF RFM90 Datasheet doesn't say that #LoRa 923 MHz is supported for Asia Region ... But we proved that the #Pine64 LoRa Module works at 923 MHz!

👍

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**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 15, 2021, 10:48

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 15, 2021, 10:48

Apr 15, 2021, 10:48

Lup Yuen Lee 李立源 @lupyuen@qoto.org

#LoRa Chirp transmitted by #BL602 LoRa SX1262 Driver ... Captured by Airspy SDR ... In super slo mo

08646b2e87a3cb29.mp4

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**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 15, 2021, 10:34

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 15, 2021, 10:34

Apr 15, 2021, 10:34

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Sorry I goofed ... Mixed up microseconds and milliseconds in #BL602 #LoRa SX1262 Driver ... Now AirSpy SDR shows the complete LoRa Chirp! 🎉

https://github.com/lupyuen/bl_iot_sdk/commit/bbd5395e04160d97f7d56193ad7f0a2022bcb45d

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**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 15, 2021, 10:05

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Apr 15, 2021, 10:05

Apr 15, 2021, 10:05

Lup Yuen Lee 李立源 @lupyuen@qoto.org

We have configured the #BL602 #LoRa Transmit Timeout as 3 seconds ... But it's timing out way too quickly ... Possibly quitting the packet too soon ... Lemme check the Timer Code 🤔

https://github.com/lupyuen/bl_iot_sdk/blob/sx1262/customer_app/sdk_app_lorawan/sdk_app_lorawan/demo.c

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**Lup Yuen Lee 李立源** · Apr 15, 2021, 09:27

Lup Yuen Lee 李立源 boosted

**AmpBenzScientist** @AmpBenzScientist@qoto.org · Apr 15, 2021, 09:27

Apr 15, 2021, 09:27

AmpBenzScientist @AmpBenzScientist@qoto.org

@jz @lupyuen @PINE64 I really wanted to make a half mini pcie wireless/bt card based on the BL602. It has mostly happened already.

**Lup Yuen Lee 李立源** · Apr 15, 2021, 09:21

Lup Yuen Lee 李立源 boosted

**Jérémie Zimmermann🎶💗🧀🫖5946** @jz@mamot.fr · Apr 15, 2021, 09:21

Apr 15, 2021, 09:21

Jérémie Zimmermann🎶💗🧀🫖5946 @jz@mamot.fr

@AmpBenzScientist @lupyuen I was following RiscV since its inception, as part of a dream of exactly-what-we-wanted in terms of potential for freedom, modularity, but also lo-fi/frugal computing etc.

For a while i dreamt, and waited, and got convinced one future for freedom will have to be paved in RiscV chips!

I would have never expected that my first RiscV chip ever would be a... 25$ soldering iron!!! <3 amazing #pinecil

Prob a testperiment from @PINE64 towards riscV SBC (recntly anounced)

**Lup Yuen Lee 李立源** · Apr 15, 2021, 09:08

Lup Yuen Lee 李立源 boosted

**AmpBenzScientist** @AmpBenzScientist@qoto.org · Apr 15, 2021, 09:08

Apr 15, 2021, 09:08

AmpBenzScientist @AmpBenzScientist@qoto.org

@lupyuen With RISC-V it seems that the choice is either to pay a lot of money for open hardware or pay pocket change for a handful of odd Shenzhen Samples from good ole Guangdong, Zhongguo.

**Lup Yuen Lee 李立源** · Apr 15, 2021, 09:04

Lup Yuen Lee 李立源 boosted

**AmpBenzScientist** @AmpBenzScientist@qoto.org · Apr 15, 2021, 09:04

Apr 15, 2021, 09:04

AmpBenzScientist @AmpBenzScientist@qoto.org

@lupyuen I called it lol. Ever since I got the k210 dual core 64bit RISC-V SoC in the M5 Camera, I knew that RISC-V was going to take over certain areas. I saw object detection faster than anything I have experienced before. This architecture is much like the Linux kernel of CPUs.