**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Feb 22, 2021, 02:10

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Feb 22, 2021, 02:10

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Feb 22, 2021, 02:10

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Let's connect #PineCone #BL602 @PINE64 to #LoRa RF96 ... Always connect Antenna before Power! ⚡... Bought from Tindie

https://www.tindie.com/products/m2m/lora-module-for-breadboard-with-antenna/

590ed8168af5b8ba.jpg

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Feb 22, 2021, 05:51

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Feb 22, 2021, 05:51

Feb 22, 2021, 05:51

Lup Yuen Lee 李立源 @lupyuen@qoto.org

We'll port the #LoRa SX1276 Driver from #Mynewt OS to #BL602 IoT SDK ... Because the GPIO and SPI Hardware Abstraction Layers are quite similar

https://github.com/apache/mynewt-core/blob/master/hw/drivers/lora/sx1276/src/sx1276.c

a60d1bf998fb86b8.png

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Feb 27, 2021, 11:58

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Feb 27, 2021, 11:58

Feb 27, 2021, 11:58

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Porting #LoRa SX1276 Driver from Mynewt to #BL602 IoT SDK

https://github.com/lupyuen/bl_iot_sdk/blob/lora/customer_app/sdk_app_lora/sdk_app_lora/sx1276-board.c#L64

3c867f32c8df8842.png

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 01, 2021, 06:05

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 01, 2021, 06:05

Mar 01, 2021, 06:05

Lup Yuen Lee 李立源 @lupyuen@qoto.org

#LoRa SX1276 Driver listens for GPIO Interrupts on 6 (!) GPIO Pins ... Maybe #BL602 can defer this ... If we're not receiving LoRa Packets 🤔

https://github.com/lupyuen/bl_iot_sdk/blob/lora/customer_app/sdk_app_lora/sdk_app_lora/sx1276-board.c#L137-L185

fc8e45d45491b2b9.png

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 01, 2021, 08:06

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 01, 2021, 08:06

Mar 01, 2021, 08:06

Lup Yuen Lee 李立源 @lupyuen@qoto.org

#BL602 IoT SDK builds #LoRa Driver successfully yay! Now filling in the SPI Functions to talk to SX1276

https://github.com/lupyuen/bl_iot_sdk/blob/lora/customer_app/sdk_app_lora/sdk_app_lora/sx1276.c#L213-L252

d7ff82b19f439cb6.png

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 01, 2021, 08:50

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 01, 2021, 08:50

Mar 01, 2021, 08:50

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Transmit and Receive #SPI Data on #RISCV #BL602 ... Piece of kueh! 🍰

https://github.com/lupyuen/bl_iot_sdk/blob/lora/customer_app/sdk_app_lora/sdk_app_lora/sx1276.c#L245-L286

706392e49a6c01cb.png

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 02, 2021, 00:10

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 02, 2021, 00:10

Mar 02, 2021, 00:10

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Let's test the #BL602 #LoRa Driver ... With the "LoRa Ping" app ported from #Mynewt OS

https://github.com/apache/mynewt-core/blob/master/apps/loraping/src/main.c

524950ad52620fc1.png

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 02, 2021, 05:17

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 02, 2021, 05:17

Mar 02, 2021, 05:17

Lup Yuen Lee 李立源 @lupyuen@qoto.org

#PineCone #BL602 nearly out of pins (and colours) for #LoRa SX1276 ... Let's use these pins for now

https://github.com/lupyuen/bl_iot_sdk/blob/lora/customer_app/sdk_app_lora/sdk_app_lora/sx1276.h#L24-L54

24d3324f633f3696.png

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 02, 2021, 07:25

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 02, 2021, 07:25

Mar 02, 2021, 07:25

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Let's test whether #BL602 can talk to #LoRa SX1276 over SPI ... By dumping some SX1276 registers

https://github.com/lupyuen/bl_iot_sdk/blob/lora/customer_app/sdk_app_lora/sdk_app_lora/demo.c#L199-L213

b4c98520326a9b1f.png

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 02, 2021, 10:24

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 02, 2021, 10:24

Mar 02, 2021, 10:24

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Yep #BL602 talks OK to #LoRa SX1276 over SPI ... SX1276 register values look correct ... Now let's transmit a LoRa Message!

https://github.com/lupyuen/bl_iot_sdk/blob/lora/customer_app/sdk_app_lora/sdk_app_lora/demo.c#L199-L213

f20d321dce1d628a.png

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · 2021-03-02T10:46:33Z

Lup Yuen Lee 李立源 @lupyuen@qoto.org

#BL602 #SPI Unsolved Mystery ... BL602 must be configured for SPI Phase 1 to talk to #LoRa SX1276 ... But SX1276 actually uses SPI Phase 0! 🤔

https://github.com/lupyuen/bl_iot_sdk/blob/lora/customer_app/sdk_app_lora/sdk_app_lora/sx1276-board.c#L112-L137

dab1762ac5e97b76.png

Mar 02, 2021, 10:46 · · Tusky · · ·

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 02, 2021, 11:43

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 02, 2021, 11:43

Mar 02, 2021, 11:43

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Our #LoRa SX1276 (actually RF96) is factory configured for 434 MHz, sez the Frequency Registers ... #BL602 will tune it to 923 MHz for Singapore

https://github.com/lupyuen/bl_iot_sdk/blob/lora/customer_app/sdk_app_lora/sdk_app_lora/demo.c#L199-L213

95fe744858dcdbb2.jpeg

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 02, 2021, 11:58

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 02, 2021, 11:58

Mar 02, 2021, 11:58

Lup Yuen Lee 李立源 @lupyuen@qoto.org

How will we know if our #BL602 + #LoRa SX1276 are misbehavin’ on the airwaves? We got a spy ... An AirSpy Software Defined Radio

https://airspy.com/airspy-r2

3cf53561cfbc047e.jpg

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 02, 2021, 15:34

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 02, 2021, 15:34

Mar 02, 2021, 15:34

Lup Yuen Lee 李立源 @lupyuen@qoto.org

923 MHz on a quiet Singapore night ... Captured by #Gqrx and #Airspy R2 Software Defined Radio 📻

https://youtu.be/RJIRTz2zUok

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 02, 2021, 23:55

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 02, 2021, 23:55

Mar 02, 2021, 23:55

Lup Yuen Lee 李立源 @lupyuen@qoto.org

#BL602 inits the #LoRa SX1276 Driver ... By writing a bunch of SX1276 Registers over SPI ... So far so good!

https://github.com/lupyuen/bl_iot_sdk/blob/lora/customer_app/sdk_app_lora/sdk_app_lora/demo.c#L220-L270

00b3a43bfb1720bb.png

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 00:19

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 00:19

Mar 03, 2021, 00:19

Lup Yuen Lee 李立源 @lupyuen@qoto.org

#BL602 sends a #LoRa message ... By copying the message to SX1276 Transmit FIFO over SPI ... Was the message actually transmitted? Airspy will tell!

https://github.com/lupyuen/bl_iot_sdk/blob/lora/customer_app/sdk_app_lora/sdk_app_lora/demo.c#L107-L124

e14e59cd5d30893a.png

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 01:10

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 01:10

Mar 03, 2021, 01:10

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Someday we shall pack #PineCone #BL602 @ThePine64 with #LoRa ... Into this cute clear Junction Box

dc98bd40ed15d5cb.jpg

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 01:37

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 01:37

Mar 03, 2021, 01:37

Lup Yuen Lee 李立源 @lupyuen@qoto.org

But today we shall spy on #BL602 + #LoRa ... With an #Airspy R2 Software Defined Radio 📻

94fea0827adf63c7.jpg

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 01:52

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 01:52

Mar 03, 2021, 01:52

Lup Yuen Lee 李立源 @lupyuen@qoto.org

#BL602 + #LoRa SX1276 + Airspy SDR ... Inside an improvised Faraday Cage 🫕 ... It really works!

145f3bb12caae995.jpg

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 02:40

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 02:40

Mar 03, 2021, 02:40

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Nope Airspy SDR couldn't sniff our #BL602 #LoRa at 923 MHz ... Though it sniffed others thru the Faraday Cage (erm) Pot 🤔

https://github.com/lupyuen/bl_iot_sdk/blob/lora/customer_app/sdk_app_lora/sdk_app_lora/demo.c#L220-L270

8141df03fc4a1fab.png

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 06:35

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 06:35

Mar 03, 2021, 06:35

Lup Yuen Lee 李立源 @lupyuen@qoto.org

CubicSDR software works better with Airspy ... Here's the #BL602 #LoRa Packet (64 bytes) centered at 923 MHz with bandwidth 125 kHz

https://cubicsdr.com/

cf7e4da44650c098.png

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 07:04

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 07:04

Mar 03, 2021, 07:04

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Let's zoom into the #BL602 #LoRa Packet ... And hunt for the LoRa Chirp!

https://pubs.gnuradio.org/index.php/grcon/article/download/8/7/

d8a90876d9d7a8b0.png

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 10:03

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 10:03

Mar 03, 2021, 10:03

Lup Yuen Lee 李立源 @lupyuen@qoto.org

1️⃣ Enable #LoRa SX1276 Power Amplifier 2️⃣ Increase Airspy sample rate to 10 MHz ... LoRa Packets never looked better!

https://github.com/lupyuen/bl_iot_sdk/commit/ae7e11a87f58ef63fea9b5c158aa66f3e81c145e#diff-6d25e21aa14e973456e3eb35c4298a576f14a5296ae392544e1ca61d8e463ed4

c930b82862e3ce2a.png

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 10:57

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 10:57

Mar 03, 2021, 10:57

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Captured the Legendary #LoRa Chirp! (The helix thingy)

https://pubs.gnuradio.org/index.php/grcon/article/download/8/7/

09119fbeb07b28f0.png

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 11:09

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 03, 2021, 11:09

Mar 03, 2021, 11:09

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Someone captured this #LoRa Chirp with HackRF One SDR ... Isn't this beautiful?

https://www.linkedin.com/feed/update/urn:li:activity:6772707414933430272?commentUrn=urn%3Ali%3Acomment%3A%28activity%3A6772707414933430272%2C6772744850791124992%29

b105eba0652f556a.jpg

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 04, 2021, 01:58

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 04, 2021, 01:58

Mar 04, 2021, 01:58

Lup Yuen Lee 李立源 @lupyuen@qoto.org

#BL602 #LoRa Chirp ... One last shot

https://pubs.gnuradio.org/index.php/grcon/article/download/8/7/

507f3f0908e32726.png

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 04, 2021, 02:15

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 04, 2021, 02:15

Mar 04, 2021, 02:15

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Sending #LoRa Packets from #PineCone #BL602 @PINE64 ? Connect these 5 data pins to Semtech SX1276 or Hope RF96

https://github.com/lupyuen/bl_iot_sdk/blob/lora/customer_app/sdk_app_lora/sdk_app_lora/sx1276.h#L24-L56

07dae021275cc551.jpg

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 04, 2021, 04:52

**Lup Yuen Lee 李立源** @lupyuen@qoto.org · Mar 04, 2021, 04:52

Mar 04, 2021, 04:52

Lup Yuen Lee 李立源 @lupyuen@qoto.org

Connect #PineCone #BL602 @PINE64 to #LoRa #IoT Transceiver ... All shall be explained here

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

b1833bf82e87a185.jpeg

**Kermode** @gemlog@mastodonten.de · Mar 02, 2021, 15:41

**Kermode** @gemlog@mastodonten.de · Mar 02, 2021, 15:41

Mar 02, 2021, 15:41

Kermode @gemlog@mastodonten.de

@lupyuen I guess there's no sound in space.

**👁 socat** @socat@nanao.cybtex.fr · Mar 03, 2021, 02:10

**👁 socat** @socat@nanao.cybtex.fr · Mar 03, 2021, 02:10

Mar 03, 2021, 02:10

👁 socat @socat@nanao.cybtex.fr

@lupyuen It's a nice trick :þ

**Kermode** @gemlog@mastodonten.de · Mar 03, 2021, 11:15

**Kermode** @gemlog@mastodonten.de · Mar 03, 2021, 11:15

Mar 03, 2021, 11:15

Kermode @gemlog@mastodonten.de

@lupyuen

https://cubicsdr.com/?page_id=35

Trending now

Resources

Developers

What is Mastodon?

qoto.org

More…