@lupyuen
What hw part is being talked to over said dma? Does order of dma reads matter? Can you cache requests issue dma read burst and send result asynchronously etc or per queue keeping order? We had similar problem in nokia on radiomodules i think. Dont remember exact solution though.

**Lup Yuen Lee 李立源** · Mar 26, 2021, 01:31

Lup Yuen Lee 李立源 boosted

**🎓 Doc Freemo 🇳🇱** @freemo@qoto.org · Mar 26, 2021, 01:31

Mar 26, 2021, 01:31

🎓 Doc Freemo 🇳🇱 @freemo@qoto.org

@lupyuen Well if its just a hacked together port and not a write from scratch then at least it meakes sense why.. I was worried it was intentional or written from scratch and just poor design.

**Lup Yuen Lee 李立源** · Mar 26, 2021, 00:59

Lup Yuen Lee 李立源 boosted

**projectgus** @projectgus@mastodon.social · Mar 26, 2021, 00:59

Mar 26, 2021, 00:59

projectgus @projectgus@mastodon.social

@lupyuen Ah yes, the 1917 Russian revolution. That famous event where the Bolsheviks wrote an open letter asking the Czar and his inner circle to step down.

**Lup Yuen Lee 李立源** · Mar 26, 2021, 01:14

Lup Yuen Lee 李立源 boosted

**🎓 Doc Freemo 🇳🇱** @freemo@qoto.org · Mar 26, 2021, 01:14

Mar 26, 2021, 01:14

🎓 Doc Freemo 🇳🇱 @freemo@qoto.org

@icedquinn

Get in line!

@footjamfan @szalayricha @bonifartius @lupyuen

**Lup Yuen Lee 李立源** · Mar 26, 2021, 00:08

Lup Yuen Lee 李立源 boosted

**Q.U.I.N.N.** @icedquinn@blob.cat · Mar 26, 2021, 00:08

Mar 26, 2021, 00:08

Q.U.I.N.N. @icedquinn@blob.cat

@freemo @szalayricha @footjamfan @bonifartius @lupyuen well fuck me.

i thought it was going to be the cancel camp that shot first on this.

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 26, 2021, 01:29

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 26, 2021, 01:29

Mar 26, 2021, 01:29

Lup Yuen Lee 李立源 @lupyuen@qoto.org

@freemo Haha ahem ... I ported this LoRa driver from Mynewt OS. The driver was designed for platforms without DMA.

Since we support DMA on BL602, we can do better ... But the driver needs to be redesigned.

**Lup Yuen Lee 李立源** · Mar 26, 2021, 01:20

Lup Yuen Lee 李立源 boosted

**🎓 Doc Freemo 🇳🇱** @freemo@qoto.org · Mar 26, 2021, 01:20

Mar 26, 2021, 01:20

🎓 Doc Freemo 🇳🇱 @freemo@qoto.org

@lupyuen wow, that is some crappy implementation by the sound of it! Honestly I am surprised, usually the low-level uC people (the ones working with assembly and C) tend to do a way better job than that.

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 26, 2021, 01:17

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 26, 2021, 01:17

Mar 26, 2021, 01:17

Lup Yuen Lee 李立源 @lupyuen@qoto.org

#BL602 #LoRa Driver creates hundreds of SPI DMA Requests ... Each request reads / writes only ONE byte! 🙄 ... Note to future self: Combine the SPI DMA Requests

https://github.com/lupyuen/bl_iot_sdk/blob/lorarecv/customer_app/sdk_app_lora/sdk_app_lora/sx1276.c#L265-L306

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**Lup Yuen Lee 李立源** · Mar 26, 2021, 00:25

Lup Yuen Lee 李立源 boosted

**projectgus** @projectgus@mastodon.social · Mar 26, 2021, 00:25

Mar 26, 2021, 00:25

projectgus @projectgus@mastodon.social

@lupyuen Do... they think you're American? or they're American and know you're not? 🤔 I guess anger and thoughtfulness don't go together.

The abuse is really disappointing and I'm sorry it's happening to you. I guess it's not that surprising though. 🙁

I assume there are probably some signatories getting even worse than this.

Nothing in my email yet, even though I used my normal email address for the commit...

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 26, 2021, 00:03

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 26, 2021, 00:03

Mar 26, 2021, 00:03

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Here comes the threats ... Really demoralises folks like us who create free #OpenSource software 🙁

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**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 25, 2021, 23:48

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 25, 2021, 23:48

Mar 25, 2021, 23:48

Lup Yuen Lee 李立源 @lupyuen@qoto.org

#BL602 receives 4 #LoRa Packets by executing 458 SPI requests ... Great load test for SPI 👍

https://github.com/lupyuen/bl_iot_sdk/blob/lorarecv/customer_app/sdk_app_lora/sdk_app_lora/demo.c

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**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 25, 2021, 22:57

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 25, 2021, 22:57

Mar 25, 2021, 22:57

Lup Yuen Lee 李立源 @lupyuen@qoto.org

"#RustLang: Now that the long-awaited const generics (MVP) have come to stable in 1.51, what crates are going to gain the most from it?"

https://www.reddit.com/r/rust/comments/md3r18/now_that_the_longawaited_const_generics_mvp_have/?utm_medium=android_app&utm_source=share

**Lup Yuen Lee 李立源** · Mar 25, 2021, 20:03

Lup Yuen Lee 李立源 boosted

**🎓 Doc Freemo 🇳🇱** @freemo@qoto.org · Mar 25, 2021, 20:03

Mar 25, 2021, 20:03

🎓 Doc Freemo 🇳🇱 @freemo@qoto.org

@szalayricha

Oh in that case now im going to sign it just for spite...

@footjamfan @bonifartius @lupyuen

**Lup Yuen Lee 李立源** · Mar 25, 2021, 19:50

Lup Yuen Lee 李立源 boosted

**Whisperity** @szalayricha@mastodon.elte.hu · Mar 25, 2021, 19:50

Mar 25, 2021, 19:50

Whisperity @szalayricha@mastodon.elte.hu

@freemo @footjamfan @bonifartius @lupyuen If you signed the RMS letter you most likely did it with a commit that has your email address on it, so it's pretty trivial to get to.

**Lup Yuen Lee 李立源** · Mar 25, 2021, 17:54

Lup Yuen Lee 李立源 boosted

**I support RMS!** @footjamfan@freesoftwareextremist.com · Mar 25, 2021, 17:54

Mar 25, 2021, 17:54

I support RMS! @footjamfan@freesoftwareextremist.com

@bonifartius @freemo @lupyuen yes, the people doing this are becoming exactly what the RMS support letter was against - campaigns of harassment against innocents.