Search found 50 matches
- Thu Nov 07, 2019 10:46 pm
- Forum: ESP-IDF
- Topic: What is the lowest supported I2C clock speed?
- Replies: 4
- Views: 10410
- Wed Nov 06, 2019 4:18 pm
- Forum: ESP-IDF
- Topic: What is the lowest supported I2C clock speed?
- Replies: 4
- Views: 10410
Re: What is the lowest supported I2C clock speed?
Thanks.
Should I create a github issue for the driver and how it calculates the clk_speed?
Should I create a github issue for the driver and how it calculates the clk_speed?
- Tue Nov 05, 2019 10:36 pm
- Forum: ESP-IDF
- Topic: What is the lowest supported I2C clock speed?
- Replies: 4
- Views: 10410
What is the lowest supported I2C clock speed?
Hi, For: ESP-IDF v3.3 I want to configure a low I2C clock speed of 1K because I want to use the ESP32 in combination with a few slave devices using a relatively long cable of 1 meter. I cannot use another data protocol in this project. The ESP-IDF docs do not specify a lowest I2C clock speed so I as...
- Wed Aug 28, 2019 3:31 pm
- Forum: Hardware
- Topic: ADC VRef calibration eFuse
- Replies: 3
- Views: 14076
Re: ADC VRef calibration eFuse
FYI I'm also using the Lolin D32 board intensively. I have always assumed that the fuse takes priority and there is no way around that. But I hope I am wrong.No matter what I supply for the VREF param it always gets set to 1100 because the fuse takes priority.
- Sun Jul 28, 2019 2:33 pm
- Forum: General Discussion
- Topic: Uptime in millis
- Replies: 3
- Views: 6979
Re: Uptime in millis
I see 2 possibilities: 1. esp_log_timestamp() https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/system/log.html?highlight=esp_log_timestamp#_CPPv417esp_log_timestampv This also includes the time in the bootloader. 2. xTaskGetTickCount() * portTICK_PERIOD_MS https://docs.espressif.c...
- Sun Jun 09, 2019 2:32 pm
- Forum: ESP-IDF
- Topic: eclipse setup
- Replies: 2
- Views: 4868
Re: eclipse setup
The toolchain is part of https://dl.espressif.com/dl/esp32_win32 ... 181001.zip which is described on the instructions page https://docs.espressif.com/projects/esp ... setup.html
- Tue May 21, 2019 8:00 am
- Forum: ESP-IDF
- Topic: Internal RTC Drifting -8 Minutes in 15 Hours.
- Replies: 5
- Views: 8598
Re: Internal RTC Drifting -8 Minutes in 15 Hours.
Hi, You can try to change in menuconfig the "RTC clock source" to from "Internal 150kHz oscillator" to "Internal 8.5MHz oscillator divided by 256". The accuracy should improve. The online help in menuconfig provides more information: - "Internal 8.5MHz oscillator divided by 256" option results in hi...
- Mon May 20, 2019 6:56 pm
- Forum: Hardware
- Topic: Need guidelines: wiring and configuring an external 32Khz oscillator input in EDP-IDF
- Replies: 10
- Views: 20086
Re: Need guidelines: wiring and configuring an external 32Khz oscillator input in EDP-IDF
Hi WIfive, Thanks for the review! I have created a 0.8V power rail and used that for the pullups in this test. Test#1 (my production setup): - Menuconfig: "(*) External 32kHz oscillator at 32K_XP pin" - RTC board pin "32K" => 10K pullup resistor => Power rail 0.8V (this pullup is specific for the DS...
- Mon May 20, 2019 8:30 am
- Forum: Hardware
- Topic: Need guidelines: wiring and configuring an external 32Khz oscillator input in EDP-IDF
- Replies: 10
- Views: 20086
Need guidelines: wiring and configuring an external 32Khz oscillator input in EDP-IDF
Hi, For ESP-IDF v3.2 in combination with Adafruit HUZZAH32 (ESP32-WROOM-32 module). This question is about the technical documentation and configuring an external 32Khz oscillator in EDP-IDF. I'm searching for instructions on how to use an external 32Khz oscillator output signal as input for the ESP...
- Thu May 16, 2019 6:09 pm
- Forum: General Discussion
- Topic: Eclipse still showing "unresolved inclusion" and "Symbol couldn't be resolved"
- Replies: 19
- Views: 38785
Re: Eclipse still showing "unresolved inclusion" and "Symbol couldn't be resolved"
Hi Gunar, Thanks for trying. To be complete, I also import the attached XML file as follows: Project -> Properties: C/C++ General -> "Path & Symbols" property page -> tabIncludes: For Language="GNU C" Do: => Import "esp32-eclipse-includes.xml" # Do the following every time you copied files into the ...