Add a way to remap I2C1 pins after construction of standard Wire instance #726
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Normally there is no way to edit the dev_flags variable after Wire has been constructed. It is sometimes helpful to do so though. Example: u8g2 uses the builtin Wire instance to communicate with I2C displays which is normally set to the standard pins. Using the added functions from this PR it is possible to: //during setup(): uint8_t df = Wire.getDevFlags(); df |= I2C_REMAP; Wire.setDevFlags(df); After that u8g2 will nicely communicate with an I2C display connected to the alternate pins.
Normally there is no way to edit the dev_flags variable after Wire has been constructed. It is sometimes helpful to do so though. Example: u8g2 uses the builtin Wire instance to communicate with I2C displays which is normally set to the standard pins. Using the added functions from this PR it is possible to: //during setup(): uint8_t df = Wire.getDevFlags(); df |= I2C_REMAP; Wire.setDevFlags(df); After that u8g2 will nicely communicate with an I2C display connected to the alternate pins.
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@gmcn42 , |
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Sure. Amended PR. |
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I think there is a small mistake, the input parameter should be |
stevstrong
added
the
wait for OP answer
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Normally there is no way to edit the dev_flags variable after Wire has been constructed. It is sometimes helpful to do so though. Example: u8g2 uses the builtin Wire instance to communicate with I2C displays which is normally set to the standard pins.
Using the added functions from this PR it is possible to:
After that u8g2 will nicely communicate with an I2C display connected to the alternate pins.