Search found 90 matches

by markwj
Thu May 27, 2021 3:03 am
Forum: ESP-IDF
Topic: Using SPI RAM from C++ programs
Replies: 3
Views: 6134

Re: Using SPI RAM from C++ programs

Did you find a solution to make the new() operator allocate from the SPI RAM ? A few. You can checkout our code at: https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3 In particular: https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/blob/master/vehicle/OVMS.V3/main/ovms....
by markwj
Thu Jul 16, 2020 11:40 am
Forum: ESP-IDF
Topic: OSX download link for toolchain 1.22.0-96-g2852398 is broken
Replies: 1
Views: 3189

OSX download link for toolchain 1.22.0-96-g2852398 is broken

I'm trying to download the toolchain for 3.3.2 release (with the PSRAM corruption bug fix), for OSX, but the download link is failing. Site I am using is here: https://docs.espressif.com/projects/esp-idf/en/release-v3.3/get-started/macos-setup.html Download link is: https://dl.espressif.com/dl/xtens...
by markwj
Tue Jul 16, 2019 2:26 pm
Forum: Hardware
Topic: ESP-WROOM-32 and extending the flash
Replies: 10
Views: 32838

Re: ESP-WROOM-32 and extending the flash

Hi, I am SPIFFS library to store the data received from bluetooth into flash.At the same time two timer interrupts are working. But I am facing an issue , both timer interrupts and SPIFFS crash the ESP32 and shows an error 'Guru Meditation Error: Core 1 panic'ed (Cache disabled but cached memory re...
by markwj
Thu Apr 25, 2019 2:12 am
Forum: ESP-IDF
Topic: Faster, optimized ESP-IDF fork + PSRAM Issues
Replies: 21
Views: 28702

Re: Faster, optimized ESP-IDF fork + PSRAM Issues

ESP_Sprite wrote:
Thu Apr 25, 2019 2:06 am
I'm hoping I can find time to finally finish this in the next few weeks.
Thanks for the update. Very helpful.

If/when you get a toolchain, please let us know. This is impacting us quite badly.
by markwj
Thu Apr 25, 2019 1:45 am
Forum: ESP-IDF
Topic: Faster, optimized ESP-IDF fork + PSRAM Issues
Replies: 21
Views: 28702

Re: Faster, optimized ESP-IDF fork + PSRAM Issues

We're coming into 4 months after this bug was reported, but no movement on the GitHub issue.

This is a fundamental random memory corruption fault that is causing all sorts of issues. Can we get a resolution, or at least an update as to what is going on?
by markwj
Fri Aug 31, 2018 12:19 am
Forum: Hardware
Topic: ESP-WROOM-32 and extending the flash
Replies: 10
Views: 32838

Re: ESP-WROOM-32 and extending the flash

We wasted about a year with external flash. It works ok on WROOM32 (in DIO mode), but just too much trouble on WROVER32 (due to no spare 1.8v GPIO for CS, 1.8v not exposed externally, level shifting, hard-coded firmware not supporting it, etc). My recommendation is to use modules with 16MB flash alr...
by markwj
Mon Aug 13, 2018 5:02 am
Forum: Report Bugs
Topic: Corrupt MAC address in efuse
Replies: 5
Views: 17473

Corrupt MAC address in efuse

espefuse output is showing: Identity fuses: MAC MAC Address = 30:ae:a4:53:dc:b1 (CRC b2 invalid - calculated 0x3d) R/W and that causes a fatal error on boot: I (659) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE E (669) system_api: Base MAC address from BL...
by markwj
Thu Jul 05, 2018 11:43 pm
Forum: Showcase
Topic: ESP32 with GSM modem - PPP over Serial (PPPoS) client example
Replies: 34
Views: 218952

Re: ESP32 with GSM modem - PPP over Serial (PPPoS) client example

What is the expected output of this PPPOS? I have interfaced GSM module(from simcom) with ESP32 and ESP32 is in WIFI AP mode. I need internet access to devices which are connected to ESP. A wifi hotspot? What you would need is: A router for messages going between the two interfaces. To do Source NA...
by markwj
Wed Jun 06, 2018 1:48 am
Forum: ESP-IDF
Topic: Wifi AP scanning in AP mode
Replies: 3
Views: 12527

Re: Wifi AP scanning in AP mode

Scan can be done in AP+STA mode, but it will interrupt the AP activity while scan is in progress. AP+STA in general works well. You can even leave the STA side idle (just used for scanning, etc) while the AP is running. Only issue is that you can't leave the AP idle (if unconfigured, it just starts ...