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maarten-pennings / iAQcore

Arduino library for the iAQ-core indoor air quality sensor module with I2C interface
MIT License
15 stars 7 forks source link

STM32F103C8 support #1

Closed ghost closed 6 years ago

ghost commented 6 years ago

Hello,

this is the first time i'm writing an issue on Github.

Well, i'm using your library with STM32duino and a "Blue Pill" STM32F103C8 - It's working fine out of the box! I just set the I2C clock speed to 100kHz and added a small ceramic capacitor (0.1 µF) between GND and VCC near the sensor.

Maybe you can add this MCU to the list of supported ones.

Best regards,

anwofis

maarten-pennings commented 6 years ago

Hi Anwofis,

Sorry for the late reply. I didn't even know people could submit issues on Github, so I never checked them. Now I know. I have added your comment to the list of tested boards (with a link to your github page, hope that is ok). Thanks for the feedback.

And I will try to put this "issue" to "close" :-)

Maarten

RomeuCarvalhoPT commented 5 years ago

Hi. I'm using this lib on NodeMCU (ESP8266). I'm having problems getting "good" values. I'm calling read() every 10s but most of the time I get error status, but once in a while I get OK status and good result. Did you experienced this? What am I doing wrong?

Thank you very much

maarten-pennings commented 5 years ago

Hi @RomeuCarvalhoPT, are you using one of the standard examples. The line with setClockStretchLimit is very important for nodemcu.

RomeuCarvalhoPT commented 5 years ago

Hi @maarten-pennings . Yep, I'm using the basic example. I'm using a nodeMCU v3 esp-12 on pins D1 and D2. I guess that this might be related to not have pullup resistors on D1 and D2. I still didn't test with resistors because I have none in hand. Did you ever tried with this boar without pullups?

Thank you

maarten-pennings commented 5 years ago

I hardly ever use pull-ups. The ESP has internal pull-ups that are good enough.

Can you show the output when running the basic example?