LTC2662-16 some channel can't ouput

Question

The customer use DAC LTC2662 to drive 5 channels LED output(From 25mA to 300mA)， as they FSADJ pin CONECT REF to 5V Vcc power across 10 resister, the reference use internal . And use 24bits code words for program. When use their own c project code found out that there some channel no output. Their main MCU is STM32H745. 
 Is there any c source code project for customer refer?

vsethia · Accepted Answer

There are drivers for another DAC with the same interface but different functionalities. 
 Linux Drivers [Analog Devices Wiki] 
 Customer can look at the following products LTC2636/LTC2632 and modify the same. 
 Let me know if this meets the customer requirements.)