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We are using the CYBLE-022001-00 module in a project and need to send some commands to another device via the I2c bus. Is anyone aware of a sample project that covers this application?
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Welcome in the forum, William!
Byte I2C interface is quite simple: After setting up the component and starting it you use
I2C_MasterSendStart(DeviceAddress,I2C_WRITE_XFER_MODE); // Initialize a transaction for writing
I2C_MasterWriteByte(Register); // Indicate which register you want to write to
I2C_MasterWriteByte(Value); // Write to register
I2C_MasterSendStop(); // End of transaction
When you want to read from a device you use (example for reading two bytes
I2C_MasterSendStart(DeviceAddress,I2C_WRITE_XFER_MODE); // Initialize a transaction for writing
I2C_MasterWrite(Register); // Indicate which register you want to write to
I2C_MasterSendRestart(DeviceAddress,I2C_READ_XFER_MODE);
I2C_MasterReadByte(I2C_ACK_DATA); // Read from register
I2C_MasterReadByte(I2C_NAK_DATA); // Read from register, last byte is NAKed
I2C_MasterSendStop(); // End of transaction
Not too difficult. Keep in mind that most of the APIs (except those for reading a byte) return a status byte which, when non-zero indicate an error condition.
Bob