Search found 6 matches
- 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...
- 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 ...
- 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...
- 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...
- 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 ...
- 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...