Search found 40 matches

by michcfr
Wed Dec 18, 2024 4:01 am
Forum: General Discussion
Topic: esp-now over 802.15.4?
Replies: 4
Views: 4034

Re: esp-now over 802.15.4?

up :-)
by michcfr
Wed Dec 11, 2024 9:03 am
Forum: General Discussion
Topic: esp-now over 802.15.4?
Replies: 4
Views: 4034

Re: esp-now over 802.15.4?


I guess we could make something similar, but why would you want this? It's a simpler modulation scheme than WiFi, iirc.


Reasons:
-not all ESP32 are Wifi: use ESPNOW with ESP32-Hx
-latency: according to https://electricui.com/blog/latency-comparison#results 802.15.4 has a better latency than ...
by michcfr
Tue Dec 10, 2024 9:48 am
Forum: General Discussion
Topic: esp-now over 802.15.4?
Replies: 4
Views: 4034

Re: esp-now over 802.15.4?

Hello,
Is there a plan to have esp-now over 802.15.4?
Up :-)
by michcfr
Wed Dec 04, 2024 1:43 pm
Forum: ESP-IDF
Topic: Many IR receivers on a single ESP32 using RMT?
Replies: 12
Views: 3854

Re: Many IR receivers on a single ESP32 using RMT?



For the 16 gpio in parallel in dma mode: can we go above 56Khz? what would be the maximum khz?

it depends on your algorithms - how fast you process
16 i2s/dma channels - will take data down to 40 mhz. minimum 2 samples per bit -- 20 mhz, but you won't have time to process this stream


So ...
by michcfr
Wed Dec 04, 2024 1:00 pm
Forum: ESP-IDF
Topic: Many IR receivers on a single ESP32 using RMT?
Replies: 12
Views: 3854

Re: Many IR receivers on a single ESP32 using RMT?


and all receivers work simultaneously or in turn ?

for simultaneous mode for 56khz you can take data from 16 gpio (i2s/cam) in parallel in dma mode and process it software
for 15mhz so most likely will not work

for serial mode - just switch gpio to the required rmt channel.


All receivers ...
by michcfr
Wed Dec 04, 2024 8:26 am
Forum: ESP-IDF
Topic: Many IR receivers on a single ESP32 using RMT?
Replies: 12
Views: 3854

Re: Many IR receivers on a single ESP32 using RMT?

What speed do you need?
Two configurations:
-At least 56khz per IR receiver.
-At least 15Mhz per IR receiver
by michcfr
Mon Dec 02, 2024 6:14 pm
Forum: General Discussion
Topic: esp-now over 802.15.4?
Replies: 4
Views: 4034

esp-now over 802.15.4?

Hello,
Is there a plan to have esp-now over 802.15.4?
by michcfr
Mon Dec 02, 2024 3:56 pm
Forum: ESP-IDF
Topic: Many IR receivers on a single ESP32 using RMT?
Replies: 12
Views: 3854

Re: Many IR receivers on a single ESP32 using RMT?

I need 16 IR receivers managed by a single ESP32 using RMT.
Can we imagine the multiplexing of IR receivers? For example, one channel manages 2 IR receivers each?
by michcfr
Sun Dec 01, 2024 9:26 am
Forum: ESP-IDF
Topic: Many IR receivers on a single ESP32 using RMT?
Replies: 12
Views: 3854

Re: Many IR receivers on a single ESP32 using RMT?

ok so RMT can manage only one IR receivers?
by michcfr
Thu Nov 28, 2024 10:02 am
Forum: ESP-IDF
Topic: Many IR receivers on a single ESP32 using RMT?
Replies: 12
Views: 3854

Many IR receivers on a single ESP32 using RMT?

Hello,
I need to connect many IR receivers on a single ESP32 using RMT.
Can RMT manage multiple IR receivers?
If yes, what is the maximum IR receivers can I connect?
What is the more appropriate ESP32 model you would advise?

Thank you

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