![]() There is a 'I2C Master Library' written by DSSCircuits in September 2012, that modified the Wire library to accommodate the 'repeated starts' feature. The StreamFire library was posted in 2012. The 'StreamFire' wire library at GitHub - steamfire/WSWireLib: Arduino Wire Library modified to add timeouts to the freeze-prone TWI while() loops has the modifications that prevent infinite 'while()' loops originally posted two years earlier (September 2010) by 'unaie' in. Just like the other posters here, I have tried to figure out why the original Wire library (with the broken twi.c) hasn't been fixed. Serial.Like many others on this forum, I too have had problems with I2C, and after much experimentation it was clear the root problem is the blocking while() loops in twi.c. Wire.requestFrom(SLAVE_I2C_ADDRESS, 1) // This register is 8 bits = 1 byte longĭelay(2) // Wait for data to be available Wire.beginTransmission(SLAVE_I2C_ADDRESS) const uint8_t SLAVE_I2C_ADDRESS = 0b1010 Ĭonst uint16_t SLAVE_I2C_REGISTER_ADDRESS = 0x50 We will provide a full example with error handling in a followup post. This is a minimal example so it creates minimal confusion for the reader. Additionally, we wait for data using delay() instead of Wire.available(). Note that this code does not implement error handling for the sake of simplicity. In my opinion, it’s most efficient to just try out the standard way of reading a register and start from there. ![]() Note that some devices like the LAN9303 have a slightly different addressing scheme or other peculiarities. It will work with almost all I2C devices like EEPROMs, ADCs and others, provided you have the correct. The following code demonstrates how to read a register that is 1 byte (8 bits) long over I2C.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |