Dear all: we recently acquired from your Italian representative and seller (Robot Italy) few "Adalogger feather M0" boards and "OLED 2,47 - 128x64 SSD1305" displays.
After installing the libraries (Adafruit_SSD1305, Adafruit_GFX), when "feather M0" is in use, the sketch of test that Adafruit proposes ("ssd1305test") is rejected and refused, even with the plate disconnected.
We realize that only when set on "Arduino uno" the verification passes positively the test.
We kindly ask you where we can acquire other sketch of test for “SSD1305” which could be suitable to work on "Adafruit feather M0" boards.
Please consider that the “OLED” module will have to communicate with "Mode I2C" e that “Jamper R18 and R21” resistances have been already properly put in place.
Many thanks for your assistance.
Kindest regards,
Oled display SDD1305
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Re: Oled display SDD1305
I just updated the ssd1305 library this morning to work with the M0. Please try it. The library should be available from the Library Manager. If not, you can get it here:
https://github.com/adafruit/Adafruit_SSD1305_Library
https://github.com/adafruit/Adafruit_SSD1305_Library
- Alfredoadafruit
- Posts: 5
- Joined: Sat Aug 12, 2017 10:01 am
Re: Oled display SDD1305
Thanks for modifying the sketch now it passes the test but the test only works in SPI MODE.
I need to use it exclusively in I2C MODE.
I attach the photos and screen shot of the current situation, kindly ask you to help me understand what the problem is.
Thank you
I need to use it exclusively in I2C MODE.
I attach the photos and screen shot of the current situation, kindly ask you to help me understand what the problem is.
Thank you
- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Re: Oled display SDD1305
Looks OK, but you don't want the resistive divider on RST, since the voltage level is already 3.3V. Maybe that's the problem.
- Alfredoadafruit
- Posts: 5
- Joined: Sat Aug 12, 2017 10:01 am
Re: Oled display SDD1305
I tried without resistive divider but did not change anything, the display stays completely off.
I do not think the display is defective, as SPI mode works perfectly.
Do you have the ability to test the same display in I2C mode with a M0 feather and the new sketch?
I would be sure that the display, the feather M0 and I2C mode are compatible.
Thanks
I do not think the display is defective, as SPI mode works perfectly.
Do you have the ability to test the same display in I2C mode with a M0 feather and the new sketch?
I would be sure that the display, the feather M0 and I2C mode are compatible.
Thanks
- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Re: Oled display SDD1305
i don't have the equipment with me right now, I'll see what I can do over the weekend
- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Re: Oled display SDD1305
Well, I discovered that I don't have an SSD1305 display after all. I'll have to get one before I can check this out.
Sorry - I'll get one as soon as possible.
Sorry - I'll get one as soon as possible.
- adafruit2
- Posts: 22148
- Joined: Fri Mar 11, 2005 7:36 pm
Re: Oled display SDD1305
it works, make sure you add 2x 10K pullups to SDA and SCL to 3.3V!
- Alfredoadafruit
- Posts: 5
- Joined: Sat Aug 12, 2017 10:01 am
Re: Oled display SDD1305
True, I did not put the pull-up resistors! In the instructions of the display it was not indicated but I knew it had to be done!
I'm sorry to have made you waste time for this nonsense.
Thank you!
I'm sorry to have made you waste time for this nonsense.
Thank you!
- adafruit2
- Posts: 22148
- Joined: Fri Mar 11, 2005 7:36 pm
Re: Oled display SDD1305
lol its ok! we updated the guide :)
Please be positive and constructive with your questions and comments.