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Hi, I posted a question on e2e but I found interesting to ask here too. I'm trying to port the Adafruit MCP4725 library to MSP430 using the Driverlib. I'm testing with launchpad EXP43FR2433 running at 1MHz and I would not want to use interruption to keep the code more portable. The sequence to write some value on DAC is relatively simple. - Set address -> send start -> send write cmd -> send upper byte -> send lower byte -> send stop. Using the following code one byte of the value is lost. msp43x_I2C_setSlaveAddress(EUSCI_B0_BASE, _i2caddr); ms