Search found 14 matches

by Baoshi
Wed Oct 18, 2017 4:54 am
Forum: Hardware
Topic: Can we run the ESP32 on 2x AA batteries
Replies: 5
Views: 6704

Re: Can we run the ESP32 on 2x AA batteries

WiFive wrote:Gd25 3v flash only rated down to 2.7v? So yes it seems 2.3v is not relevant spec.
I think this way too. Seems the datasheet needs update
by Baoshi
Wed Oct 18, 2017 12:59 am
Forum: Hardware
Topic: Can we run the ESP32 on 2x AA batteries
Replies: 5
Views: 6704

Re: Can we run the ESP32 on 2x AA batteries

I’m evaluating PICO-D4 vs D2WD in a 2xAAA project.
In this sense, PICO with bounded GD25 flash (3.3v) is not as good as D2WD with internal 1.8V flash? Although both devices are rated at 2.3-3.6V ?
by Baoshi
Tue Oct 17, 2017 2:40 pm
Forum: Hardware
Topic: Antenna matching network on ESP32-PICO-D4
Replies: 2
Views: 1955

Antenna matching network on ESP32-PICO-D4

Hi, In the ESP32-Pico-D4 datasheet, the reference schematic shows a matching network after antenna. matching.png But the values are all TBD. I notice that on the many development boards made by Microwavemont the LNA_IN pin is directly connected to the PCB antenna. Currently I have some "W3008C" http...
by Baoshi
Tue Feb 14, 2017 2:23 pm
Forum: Hardware
Topic: 2 layer PCB
Replies: 1
Views: 1507

2 layer PCB

Well, I may need to design a board with ESP32 bare chip (not module) on a 2 layer board. Passing FCC is mandatory. Any pioneer can tell me if it is possible, any rules-of-thumb, or I'd better starting with 4 layers? The project is just at planning stage. It is better to make sure than sorry later. T...
by Baoshi
Tue Jan 03, 2017 2:17 pm
Forum: ESP32 IDF
Topic: Windows eclipse make wrapper
Replies: 2
Views: 1955

Re: Windows eclipse make wrapper

Hello Angus,

Yes this works perfectly now. Thanks for the patch.
I'm not aware of CDT builtin support for cygpath, maybe it is time to dig into it.

Baoshi
by Baoshi
Fri Dec 30, 2016 3:25 pm
Forum: ESP32 IDF
Topic: Windows eclipse make wrapper
Replies: 2
Views: 1955

Windows eclipse make wrapper

Under esp-idf\tools\windows, there is a nice Windows eclipse make wrapper, which replaces building command as make $@ V=1 | sed -E "s@ /([a-z])/(.+)/@ \1:/\2/@g" | sed -E "s@-I/([a-z])/(.+)/@-I\1:/\2/@g" | sed -E "s@-L/([a-z])/(.+)/@-L\1:/\2/@g" I understand the purpose is to replace something like ...
by Baoshi
Thu Oct 27, 2016 5:03 am
Forum: News
Topic: ESP-IDF 1.0 Release plan
Replies: 59
Views: 39387

Re: ESP-IDF 1.0 Release plan

Any plan about DMA and external RAM?

Would very much like to see SPIFFS but in fact give me flash APIs I can port it in one day.

FAT is good for SDCARD though.
by Baoshi
Mon Dec 28, 2015 5:33 am
Forum: General Discussion
Topic: Merry Christmas!
Replies: 10
Views: 6089

Re: Merry Christmas!

Just raw pixels, so 128x160x2byes= 40960bytes/frame. Should do some compression but I just wanted to push it up before Christmas.
The source code is still ugly. I've put up here:
https://github.com/baoshi/ESP32-XMAS
by Baoshi
Mon Dec 28, 2015 12:57 am
Forum: ESP32 IDF
Topic: compiled windows (64?) xtensa-esp108 toolchain
Replies: 7
Views: 8596

Re: compiled windows (64?) xtensa-esp108 toolchain

Hi ladyada, I'm able to run it under Cygwin environment, Thanks! However it seems I'm not able to run it alone outside Cygwin. It gives " *** fatal error - cygheap base mismatch detected - 0x180320400/0x180321400. This problem is probably due to using incompatible versions of the cygwin DLL. Search ...
by Baoshi
Sun Dec 27, 2015 3:02 pm
Forum: General Discussion
Topic: workaround install toolchain
Replies: 4
Views: 6026

Re: workaround install toolchain

Rui,

Do not put sudo before make, that should work.

Baoshi

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