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Unable to get value from SHT-31 #76

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matsujirushi opened this issue Aug 3, 2021 · 1 comment
Open

Unable to get value from SHT-31 #76

matsujirushi opened this issue Aug 3, 2021 · 1 comment

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@matsujirushi
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The sunlight sensor is connected to I2C0, and the SHT-31 is connected to I2C1.
When I try to get the humidity of SHT-31, I get an "unknown reason" error.

image
@matsujirushi
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It seems that multiple I2C buses cannot be used at the same time because SDA and SCL are static variables.

https://github.com/Seeed-Studio/Wio_Link/blob/master/esp8266_arduino/Wire.cpp#L58
https://github.com/Seeed-Studio/Wio_Link/blob/master/esp8266_arduino/core_esp8266_si2c.c#L64
https://github.com/Seeed-Studio/Wio_Link/blob/master/esp8266_arduino/core_esp8266_si2c.c#L26

The latest version of Arduino core for ESP8266 seems to correct this.

https://github.com/esp8266/Arduino/blob/master/cores/esp8266/core_esp8266_si2c.cpp#L67

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@matsujirushi