Search found 6 matches

by kindaTall
Mon Nov 21, 2022 9:10 am
Forum: General Discussion
Topic: MALLOC_CAP_32BIT and float
Replies: 6
Views: 6801

Re: MALLOC_CAP_32BIT and float

Hello ESP_igrr, Thank you for your quick response. For now, I have shifted and optimized some allocations, so that we have sufficient 8B capable memory. I realize the error may be niche, but I think it might warrent an update in the documentation. This workaround seems to also work, though I underst...
by kindaTall
Thu Nov 17, 2022 3:03 pm
Forum: General Discussion
Topic: MALLOC_CAP_32BIT and float
Replies: 6
Views: 6801

Re: MALLOC_CAP_32BIT and float

I realize this is super old. But I just ran into this problem today. I was wondering if this has been fixed in newer versions. We are currently still on 4.4 and are running into this issue. Though I expect this to be a silicon issue tbh. We are currently working around this, by casting the malloced ...
by kindaTall
Thu Jul 09, 2020 6:23 pm
Forum: ESP-IDF
Topic: Enter deep sleep in custom start_cpu0
Replies: 1
Views: 2667

Enter deep sleep in custom start_cpu0

Hello there fellow esp-enthusiats, I am working on a project, where the esp in normal operation is powered by a power source. If the power source disconnects, a battery supplies the voltage. In order to not drain the batteries, the esp is supposed to enter deep sleep mode. This all works fine. But a...
by kindaTall
Tue Apr 21, 2020 8:09 am
Forum: General Discussion
Topic: Build ULP example provided failed on windows
Replies: 2
Views: 3870

Re: Build ULP example provided failed on windows

Have you been able to solve this? Does anybody else know of a solution? Just installed the tool chain, copied the ulp example and am getting the same error. (I am using Windows, installed and reinstalled the toolchain according to https://docs.espressif.com/projects/esp-idf/en/latest/esp32/get-start...
by kindaTall
Tue Jan 21, 2020 5:41 pm
Forum: ESP-IDF
Topic: RMT Communication with MCP3910
Replies: 1
Views: 2737

Re: RMT Communication with MCP3910 (Update)

Me again :) I found a forum with a somewhat related problem that suggested using the spi peripheral for digital reading at high frequency. So I did, code is posted below. I am running into the issue that between two spi-transactions there is a delay of about 90us. I assume that is just overhead one ...
by kindaTall
Tue Jan 21, 2020 9:01 am
Forum: ESP-IDF
Topic: RMT Communication with MCP3910
Replies: 1
Views: 2737

RMT Communication with MCP3910

Hello everybody, I am trying to communicate with an MCP3910, ADFE. Besides running SPI as a protocol the developers have implemented a rather simple 2-wire protocol, which works as follows. The master-device, in my case an esp32, uses one line to supply a clock signal (square wave, >40kHz). The MCP3...