Not Run Correctly on STACK-M5 ATOM-U (ESP32)

[gegedvd]

Not Run Correctly on STACK-M5 ATOM-U (ESP32)

[GeorgeIoak]

Hi @gegedvd I'm not able to explain why we are getting different values to work. What I did to determine the value was in this post #102 (comment)

What did you measure in order to find that you had to increase from 51 to 71? You mentioned that you didn't have 1ms but what value did you have? Maybe this value isn't always the same and my value was at 1 end of the range and now your value is at the other end of the acceptable range. I just ran a few tests adjusting VALUE_IPL until I was close to 1ms and the code was working but I didn't spend time trying to find the window of acceptable values.

[gegedvd]

PlatformIO Project Configuration File

; PlatformIO Project Configuration File
;
;   Build options: build flags, source filter
;   Upload options: custom upload port, speed and extra flags
;   Library options: dependencies, extra library storages
;   Advanced options: extra scripting
;
; Please visit documentation for the other options and examples
; https://docs.platformio.org/page/projectconf.html

[env:m5stack-atom]
platform = espressif32
board = m5stack-atom
framework = arduino
upload_protocol = esptool
upload_port = COM8
monitor_speed = 115200
lib_deps = 
	SPI
	Wire
	adafruit/Adafruit MLX90614 Library
	adafruit/Adafruit BMP3XX Library
	OneWire
	DallasTemperature
	orgua/OneWireHub@^3.0.0

[gegedvd]

I checked issue #102 VALUE_IPL and I didn't have 1ms on the debug pin , I adjusted the VALUE_IPL value from 51 to 71 to get 996µs and now the OneWireSlave works fine

@GeorgeIoak : can you explain different value of VALUE_IPL on ESP32 chip @240Mhz

Thanks a Lot

[gegedvd]

Hello , thank you for our reply
I have check with oscilloscope on debug pin with master 1w disconnect during measure
IPL:51 => Debug:1.38ms not run
IPL:55 => Debug:1.27ms not run
IPL:61 => Debug:1.13ms run flirckly
...
IPL:70 => Debug:1.01ms run (diff 10µs)
IPL:71 => Debug:0.996ms run (diff 4µs better)

I run on Stack-M5 Atom-U USB-A STICK

@GeorgeIoak do not hesitate to submit me a test on this platform