SMBus Error

ruch
New Member

Posts: 12

SMBus Error Mar 30, 2018 7:40:12 GMT -8

Quote

Post by ruch on Mar 30, 2018 7:40:12 GMT -8

Hi,

I am having an issue trying to run the testSDL_Pi_TCA9545.py scripts after connecting all the boards per the instruction. I tried searching and it appears somebody had the same problem in the past too, but I cannot find the answer in the thread.

sudo python testSDL_Pi_TCA9545.py

Test SDL_Pi_TCA9545 Version 1.0 - SwitchDoc Labs

Sample uses 0x73

Program Started at:2018-03-30 15:07:03

Traceback (most recent call last):

File "testSDL_Pi_TCA9545.py", line 51, in <module>

tca9545 = SDL_Pi_TCA9545.SDL_Pi_TCA9545(addr=TCA9545_ADDRESS, bus_enable = TCA9545_CONFIG_BUS0)

File "/home/pi/Desktop/SDL_Pi_GroveWeatherPi-master/SDL_Pi_TCA9545/SDL_Pi_TCA9545.py", line 44, in _init_

self._bus = smbus.SMBus(twi)

IOError: [Errno 2] No such file or directory

I am using Raspbian Stretch OS running on Raspberry Pi B+. I installed the packages per the readme file of the SDL_Pi_GroveWeatherPi package.

Can somebody help me point out what could be the issue?

Thank!

SDL Global Moderator Posts: 5,655 Raspberry Pi: Yes Other Device: PC, arduino, beagleBone	SMBus Error Mar 30, 2018 8:01:24 GMT -8 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by SDL on Mar 30, 2018 8:01:24 GMT -8 Hello Ruch, It looks to me like you haven't installed the i2c bus. What happens if you type "sudo i2cdetect -y 1"? BP

ruch New Member Posts: 12	SMBus Error Mar 31, 2018 23:16:41 GMT -8 SDL and scott like this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by ruch on Mar 31, 2018 23:16:41 GMT -8 Hi BP, Thanks for your reply. I did not realize I have to enable I2C. Solved it by enabling I2C interface under Raspberry Pi Software Config Tool. Again, thanks for your help! -Ruch
	Last Edit: Mar 31, 2018 23:27:37 GMT -8 by ruch

scott New Member Posts: 3	SMBus Error May 22, 2018 17:16:58 GMT -8 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by scott on May 22, 2018 17:16:58 GMT -8 Same here.

SDL Global Moderator Posts: 5,655 Raspberry Pi: Yes Other Device: PC, arduino, beagleBone	SMBus Error May 23, 2018 8:43:03 GMT -8 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by SDL on May 23, 2018 8:43:03 GMT -8 Scott, Install the I2C bus on the Raspberry Pi using the Pi Software config tool (lots of tutorials on line). BP

Post by ruch on Mar 30, 2018 7:40:12 GMT -8

Post by SDL on Mar 30, 2018 8:01:24 GMT -8

Post by ruch on Mar 31, 2018 23:16:41 GMT -8

Post by scott on May 22, 2018 17:16:58 GMT -8

Post by SDL on May 23, 2018 8:43:03 GMT -8

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