Search found 26 matches
- Thu Feb 22, 2018 4:17 pm
- Forum: General Discussion
- Topic: ESP32 as ISP
- Replies: 20
- Views: 28220
ESP32 as ISP
Hi! Is there a way to use an ESP32 as an ISP for another ESP32? I have managed to access the external flash of the board that needs to been programmed, by exposing it's pins and disabling it's CPU (by tying CHIP_PU line to GND). This way the external flash memory that needs to be programmed it's not...
- Thu Feb 22, 2018 2:31 pm
- Forum: ESP32 Arduino
- Topic: Setting GPIO as High Impedance
- Replies: 0
- Views: 6389
Setting GPIO as High Impedance
Hi! Is there a way to set a GPIO pin as a high impedance pin? I'm trying to program an ESP32 (board 1) external flash, using another ESP32 (board 2) conected via SPI. I can access board 1 external flash using board 2, but once I do that board 1 is not able to boot anymore, as the SPI lines seem to n...
- Wed Feb 14, 2018 11:45 am
- Forum: ESP-IDF
- Topic: ESP32 PSRAM support
- Replies: 112
- Views: 194847
Re: ESP32 PSRAM support
To all newbies out there (me included) testing pSRAM compatibility with their boards, here's what I did to get it working. First of all make sure you're on the latest ESP-IDF verison . I'm on ESP-IDF v3.1-dev-380-gca3faa61 2nd stage bootloader as of testing this. Second of all do you see SPI SRAM (s...
- Thu Feb 01, 2018 11:53 am
- Forum: ESP32 Arduino
- Topic: ESP32 ADC Non-linear Issues - How do I fix / change Attenuation or width?
- Replies: 43
- Views: 127685
Re: ESP32 ADC Non-linear Issues - How do I fix / change Attenuation or width?
Getting an official answer from Espressif, they do plan on fixing the factory calibration in the near future
- Tue Jan 30, 2018 1:48 pm
- Forum: Hardware
- Topic: ADC input impedance
- Replies: 6
- Views: 19277
Re: ADC input impedance
I would also like to know that; couldn't find it either!
- Mon Oct 16, 2017 4:49 pm
- Forum: ESP32 Arduino
- Topic: 128kSPS fast ADC data logging and processing
- Replies: 1
- Views: 4761
128kSPS fast ADC data logging and processing
Hi all, I recently got a task to do using the AD7767 128 kSPS 24-bit ADC. The task states that I need to plot the output of the ADC on a time scale. (the ADC is hooked up to a load cell). I've worked with slower ADCs in the past (@4.8kSPS) and what I used to do then is print the values along with mi...