Search found 15 matches

by iot-bits.com
Wed Jan 17, 2018 2:49 pm
Forum: ESP8266 SDK
Topic: Stack pointer area?
Replies: 7
Views: 205

Re: Stack pointer area?

That's some cool information, I'd have to request permission to include all this in a guest post on my website. :D
by iot-bits.com
Thu Jan 11, 2018 11:07 am
Forum: ESP8266 SDK
Topic: NRF24L01 NONOS SDK
Replies: 6
Views: 123

Re: NRF24L01 NONOS SDK

I haven't worked with this particular chip, but I'm sure you'd figure it out, huge community support for the nRF chip! :)
The bigger problem is always the ESP8266 HSPI interface, which is not too well documented. And then RF board layout stuff.
by iot-bits.com
Wed Jan 10, 2018 5:13 pm
Forum: ESP8266 SDK
Topic: FCC sample code missing
Replies: 5
Views: 128

Re: FCC sample code missing

Ohh, I understand that. That's a problem then.
You should see what the support team tells you, they respond better if you contact via the Fb page.
Otherwise you have to write your own firmware there.
by iot-bits.com
Wed Jan 10, 2018 2:47 pm
Forum: General Q&A
Topic: ESP8266 or ESP32 for automotive use
Replies: 1
Views: 111

Re: ESP8266 or ESP32 for automotive use

You could use them in automotive, the chips are very reliable if you design the hardware right and the programming is robust. If you operate across wide temperature ranges, you need to run RF calibration more often on power-up. The entire board design and components also start to matter a lot. As fo...
by iot-bits.com
Wed Jan 10, 2018 2:44 pm
Forum: ESP8266 SDK
Topic: NRF24L01 NONOS SDK
Replies: 6
Views: 123

Re: NRF24L01 NONOS SDK

You can use GPIO then, if the CS signal is inverted.
The signal looks okay to me, there seem to be no errors, otherwise you'd see that in the logic analyser.
by iot-bits.com
Tue Jan 09, 2018 11:03 pm
Forum: ESP8266 SDK
Topic: NRF24L01 NONOS SDK
Replies: 6
Views: 123

Re: NRF24L01 NONOS SDK

Yeah, you would need to use HSPI for this. The CE pin is automatically handled by the HSPI hardware if you like it that way. Or you could just have the CE pin connected to a GPIO and control is manually, whatever works best for your application.
by iot-bits.com
Mon Jan 08, 2018 5:57 pm
Forum: ESP8266 SDK
Topic: FCC sample code missing
Replies: 5
Views: 128

Re: FCC sample code missing

by iot-bits.com
Mon Jan 08, 2018 12:55 am
Forum: ESP8266 SDK
Topic: Stack pointer area?
Replies: 7
Views: 205

Re: Stack pointer area?

Well you guessed the author right. Well, all I can say is that the nonOS SDK has tasks with priorities too (as in the os_task APIs). It is not a preemptive scheduling system, but it is something anyway. In FreeRTOS yo uhave the framework taking care of everything, all you need to do is have your ass...
by iot-bits.com
Fri Jan 05, 2018 3:10 pm
Forum: ESP8266 SDK
Topic: Stack pointer area?
Replies: 7
Views: 205

Re: Stack pointer area?

The DRAM is actually 96kB.
With nonOS SDK, the remaining 16kB gets used for ROM code.
In RTOS SDK, you have the entire 96kB for data, bss, rodata and heap.
Because heap is the flexible one here, it depends on the size of (data+bss+rodata).
by iot-bits.com
Tue Jan 02, 2018 8:58 pm
Forum: Report Bugs
Topic: ESP doesn't work plugged to breaboard, but unplugged works
Replies: 1
Views: 141

Re: ESP doesn't work plugged to breaboard, but unplugged works

Looks interesting, I think this has something to do with ground loops. Also, use a proper USB source, do not power this via cheap hubs, they cannot supply enough current to the ESP. And if it is not a breadboard problem, not sure what it could be otherwise. It seems like you get different exception ...

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