Search found 2811 matches

by ESP_Sprite
Fri Sep 20, 2019 4:56 am
Forum: ESP32 IDF
Topic: Debug without JTAG adapter, is it possible
Replies: 3
Views: 132

Re: Debug without JTAG adapter, is it possible

Theoretically, the hardware could allow you to do live debugging with gdbstub, but at the moment, no, it is not possible.
by ESP_Sprite
Thu Sep 19, 2019 3:57 am
Forum: ESP32 Arduino
Topic: ESP32 Deep sleep power consumption
Replies: 3
Views: 147

Re: ESP32 Deep sleep power consumption

You can try, but do note that those LDOs are limited to 250mA. The ESP32 needs a minimum of 500mA on WiFi initialization, otherwise it'll brown out. (If you want to test it anyway: a hacky solution would be to put two HT7333 chips in parallel.)
by ESP_Sprite
Thu Sep 19, 2019 3:37 am
Forum: ESP32 IDF
Topic: how much the HTTP transfer rate can archive on esp32
Replies: 1
Views: 74

Re: how much the HTTP transfer rate can archive on esp32

Suggest you check the iperf example in esp-idf; that at least can tell you the ideal speed you can get in your particular situation (AP, environment, etc).
by ESP_Sprite
Thu Sep 19, 2019 3:32 am
Forum: General Discussion
Topic: Mcpwm Flickering
Replies: 2
Views: 98

Re: Mcpwm Flickering

Have you tried looking at the signal with an oscilloscope?
by ESP_Sprite
Wed Sep 18, 2019 3:18 am
Forum: Hardware
Topic: Using External Memory on ESP32-WROOM
Replies: 3
Views: 123

Re: Using External Memory on ESP32-WROOM

That RAM indeed is not supported. Suggest you switch to an ESP32-Wrover as it already supported RAM built in.
by ESP_Sprite
Wed Sep 18, 2019 3:14 am
Forum: ESP32 Arduino
Topic: ESP32 Deep sleep power consumption
Replies: 3
Views: 147

Re: ESP32 Deep sleep power consumption

If any, replace the AMS1117 LDO, they're notoriously inefficient.
by ESP_Sprite
Tue Sep 17, 2019 6:55 am
Forum: ESP32 Arduino
Topic: Upload to PushingBox error
Replies: 4
Views: 273

Re: Upload to PushingBox error

Perhaps it helps if you can copy-paste the error message here?
by ESP_Sprite
Tue Sep 17, 2019 3:20 am
Forum: ESP32 Arduino
Topic: I2S DAC overshooting signal form
Replies: 1
Views: 85

Re: I2S DAC overshooting signal form

This looks more-or-less normal. Internally, the DAC consists of a bank of resistors that are switched on or off. The glitch you see is probably from the fact that not all switches switch at exactly the same time. I wouldn't worry about them: there is very little energy in them and the rest of your a...
by ESP_Sprite
Tue Sep 17, 2019 3:13 am
Forum: ESP32 Arduino
Topic: abort() was called at PC 0x40081e43 on core 1
Replies: 1
Views: 101

Re: abort() was called at PC 0x40081e43 on core 1

Moving to Arduino subforum. I suggest you double-check what restrictions the Arduino environment has for interrupt handlers; in plain ESP-IDF that would be your issue.
by ESP_Sprite
Tue Sep 17, 2019 3:08 am
Forum: General Discussion
Topic: PSRAM refresh / burst suspend
Replies: 1
Views: 108

Re: PSRAM refresh / burst suspend

The data you're looking for is in the 'Read/Write Timing' table. On the PSRAM64, to do refresh correctly, /CS should be made inactive at least once every 8 uS, and should stay inactive for 50 ns. Aside from that, as far as I can tell, clock timings do not matter and you can stop the clock if needed.

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