I am trying to use an LPC11C24 microcontroller to send digital values to a DAC8718 (https://www.ti.com.cn/cn/lit/ds/symlink/dac8718.pdf) to convert to an analog voltage value. I am attempting to communicate via SPI and I am using mbed.h with the SPI.h capability to send an arbitrary stream of bits to the DAC. However I am not seeing any output on the DAC output. I am communicating via a PCAN-USB dongle. Here is my code: