<![CDATA[m5stack ToF vl53l0x unit will stop scanning I2C devices]]>When m5stack ToF sensor is connected to Gray Core, i2c_scanner could not find/detect internal Mpu9250
The scanning is stopping at :
"I2C device found at address 0x29 !"
If we will connect GYVL53L0X module from other supplier, we will get correct scanning results:
"I2C device found at address 0x29 !"
"I2C device found at address 0x68 !"

]]>https://community.m5stack.com/topic/513/m5stack-tof-vl53l0x-unit-will-stop-scanning-i2c-devicesRSS for NodeSat, 14 Mar 2026 02:48:04 GMTThu, 17 Jan 2019 09:57:53 GMT60<![CDATA[Reply to m5stack ToF vl53l0x unit will stop scanning I2C devices on Thu, 24 Jan 2019 08:07:11 GMT]]>@playthegame thank you for help!
I updated esp32-arduino with this link - nothing happens
The same result - just 0x68 in I2C scanner listing(

]]>https://community.m5stack.com/post/2678https://community.m5stack.com/post/2678Thu, 24 Jan 2019 08:07:11 GMT<![CDATA[Reply to m5stack ToF vl53l0x unit will stop scanning I2C devices on Wed, 23 Jan 2019 12:43:02 GMT]]>@vvs551 Could you make a picture of the TOF PCB? The schematics are not yet available
I have a hypothesis on all this I2C issuses.

But before just to exclude software bugs, please check to use the latest ESP32 Arduino core, at least V1.0.1 https://github.com/espressif/arduino-esp32/releases including all the recent I2C fixes.

]]>https://community.m5stack.com/post/2662https://community.m5stack.com/post/2662Wed, 23 Jan 2019 12:43:02 GMT<![CDATA[Reply to m5stack ToF vl53l0x unit will stop scanning I2C devices on Tue, 22 Jan 2019 07:54:10 GMT]]>@watson there is scanning just 0x68 without any units/
You can see this listing in previous post

]]>https://community.m5stack.com/post/2627https://community.m5stack.com/post/2627Tue, 22 Jan 2019 07:54:10 GMT<![CDATA[Reply to m5stack ToF vl53l0x unit will stop scanning I2C devices on Tue, 22 Jan 2019 07:50:07 GMT]]>0_1548143397290_d5fe9e38-2c31-4edd-b090-5f320f23db88-image.png https://photos.app.goo.gl/xQVAn8TftW32pEfz9

]]>https://community.m5stack.com/post/2626https://community.m5stack.com/post/2626Tue, 22 Jan 2019 07:50:07 GMT<![CDATA[Reply to m5stack ToF vl53l0x unit will stop scanning I2C devices on Tue, 22 Jan 2019 02:34:34 GMT]]>@vvs551
What's the hardware version of your basic core?

0_1548124420121_TIM截图20190122103212.png

]]>https://community.m5stack.com/post/2621https://community.m5stack.com/post/2621Tue, 22 Jan 2019 02:34:34 GMT<![CDATA[Reply to m5stack ToF vl53l0x unit will stop scanning I2C devices on Tue, 22 Jan 2019 02:05:41 GMT]]>@vvs551
Hey, IP5306 was built in M5Core board without battery extension.

How about M5Core running with I2C_Scanner.ino without any unit?

IP5306 was built in M5Core Fire, so the terminal will display two I2C addresses: 0x68(MPU9250), 0x75(IP5306).

IP5306 was built in M5Core Basic, so the terminal will display one I2C address: 0x75(IP5306).

]]>https://community.m5stack.com/post/2620https://community.m5stack.com/post/2620Tue, 22 Jan 2019 02:05:41 GMT<![CDATA[Reply to m5stack ToF vl53l0x unit will stop scanning I2C devices on Mon, 21 Jan 2019 09:45:49 GMT]]>@watson Did you mean battery extension?
I have not 0x75 when scan I2C

]]>https://community.m5stack.com/post/2599https://community.m5stack.com/post/2599Mon, 21 Jan 2019 09:45:49 GMT<![CDATA[Reply to m5stack ToF vl53l0x unit will stop scanning I2C devices on Mon, 21 Jan 2019 04:31:55 GMT]]>@vvs551
0x75 is the address of IP5306 IC. Because this IC is customized. It is designed to communicate with M5Core through IIC.

0_1548045095008_TIM截图20190121123121.png

]]>https://community.m5stack.com/post/2588https://community.m5stack.com/post/2588Mon, 21 Jan 2019 04:31:55 GMT<![CDATA[Reply to m5stack ToF vl53l0x unit will stop scanning I2C devices on Fri, 18 Jan 2019 16:30:05 GMT]]>@watson without any chance for me

With ToF unit connected:

0_1547828715394_2de0980b-738f-451f-ae4e-e73c0f897556-image.png

With disconnected ToF unit:

0_1547828816954_08e239f7-8fd7-4033-9f78-c8d3d14a1428-image.png

What is 0x75 in your listing?

]]>https://community.m5stack.com/post/2552https://community.m5stack.com/post/2552Fri, 18 Jan 2019 16:30:05 GMT<![CDATA[Reply to m5stack ToF vl53l0x unit will stop scanning I2C devices on Fri, 18 Jan 2019 02:14:13 GMT]]>@vvs551
Hey, Here's my result. My Gray Core works well.
0_1547777640770_i2c_scanner_result.png

https://github.com/tackelua/I2C_Scanner/blob/master/I2C_Scanner.ino

]]>https://community.m5stack.com/post/2547https://community.m5stack.com/post/2547Fri, 18 Jan 2019 02:14:13 GMT