ARD-LTC1867 shield ADC sampling rate issue

I am currently using ARD-LTC1867 shield from Iowa Scaled Engineering for 16 bit ADC and 200ksps. i managed to get 16 bit ADC but only receiving a sampling rate of up to 1ksps. The attached file is the code that i am using. Please help me with this. Thanks

ADC_v2.ino (1.2 KB)

  int scan = t.every(1, doSomething);

Does this not mean "run doSomething() every millisecond"? If so, that would explain your 1 kHz sample rate.

At 250,000 baud you can send about 25,000 characters per second. At 200,000 samples per second you would only be able to send 1/8th of a character per sample.

You will have to find a way to buffer your samples. Perhaps some external FRAM would work.