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by ESP_Sprite
Tue Aug 04, 2020 11:15 am
Forum: Hardware
Topic: ESP32-S2 Power supply
Replies: 1
Views: 122

Re: ESP32-S2 Power supply

It's a tad hairy as the maximum power requirement for the ESP is pretty close to what USB can deliver at max, but as a rule of thumb, as long as your sensors don't use too much power (say 50-100mA max), you should be able to power them safely from USB.
by ESP_Sprite
Tue Aug 04, 2020 7:53 am
Forum: ESP32 Arduino
Topic: Crash fter running couple of days
Replies: 10
Views: 558

Re: Crash fter running couple of days

I honestly can't tell you, sorry... something is wrong early in the boot process, possibly to do with flash, but it's not something that I have seen before. Hence me asking all those questions instead of just telling you what's going on :)
by ESP_Sprite
Tue Aug 04, 2020 7:50 am
Forum: ESP32 Arduino
Topic: Core panic without registor dump
Replies: 1
Views: 111

Re: Core panic without registor dump

Hard to say without seeing your code or setup or knowing more about when this happens. Could be that something you did managed to confuse the panic handler into crashing, could be a power supply issue as well.
by ESP_Sprite
Tue Aug 04, 2020 7:48 am
Forum: ESP32 IDF
Topic: Accurate Periodic ISR
Replies: 4
Views: 297

Re: Accurate Periodic ISR

Your comment and https://www.esp32.com/viewtopic.php?t=3715#p17038 appears to conflict though - were there changes after ESP_igrr's comment? The internal RTC clock having an frequency error of 5% seems extremely large if thats tied to the error of the 40MHz crystal. When in deep sleep, the internal...
by ESP_Sprite
Tue Aug 04, 2020 7:45 am
Forum: ESP32 IDF
Topic: UDP stream not consistent parsed
Replies: 10
Views: 565

Re: UDP stream not consistent parsed

Is there any chance you can upload the software somewhere so I can check on an ESP32 here? (No need to clean up any Dutch/Flemish comments, I can read them :) )
by ESP_Sprite
Tue Aug 04, 2020 7:39 am
Forum: Hardware
Topic: ESP32 WD
Replies: 3
Views: 197

Re: ESP32 WD

Yes, all WDTs have registers accessible from both CPUs. However, all WDTs have a 'lock' function, where writing to any register is ignored until a very specific 32-bit value is written to one of the registers. This also means the watchdog cannot be reset until the WDT registers are 'unlocked' this w...
by ESP_Sprite
Tue Aug 04, 2020 7:36 am
Forum: General Discussion
Topic: How assign a given pin to another pin?
Replies: 3
Views: 167

Re: How assign a given pin to another pin?

You can't route pins to pins; you can route functions to pins. For instance, if you do not like the default UART or SPI pins, you can use the GPIO matrix (usually indirectly, using an argument to the driver initialization call) to re-route it to a different GPIO. For GPIO pins used as GPIO pins, you...
by ESP_Sprite
Mon Aug 03, 2020 8:53 am
Forum: ESP32 IDF
Topic: UDP stream not consistent parsed
Replies: 10
Views: 565

Re: UDP stream not consistent parsed

for example i received 3 of 4 or 5 packets then the ESP answer on the 3-4-5 packets... but, with the same sequence number...
Wait, how does that work? So as the response, you get three identical packets instead of three packets with increasing seq number?
by ESP_Sprite
Mon Aug 03, 2020 8:52 am
Forum: ESP32 Arduino
Topic: Crash fter running couple of days
Replies: 10
Views: 558

Re: Crash fter running couple of days

Not specifically... Can you expand a bit on the 'But I cannot download from Arduino IDE, though it appears to go through sequence without problem.' sentence? How do you conclude you cannot download?

Ah, also, have you tried erasing the entire flash chip?
by ESP_Sprite
Mon Aug 03, 2020 8:06 am
Forum: ESP32 IDF
Topic: Accurate Periodic ISR
Replies: 4
Views: 297

Re: Accurate Periodic ISR

I've considered using a hardware timer which supports periodic ISRs. The issue here is that the hardware timers are clocked by the APB clock which is likely to drift over time. System time can be made more accurate by using an external RTC crystal Note that the APB clock is based on the 40MHz cryst...

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