HighSpeed A/D and Baud Rates

[tenaja]

Im sending HSEROUT [ bin ADRESH,Bin ADRESL," "] Is this 3 bytes of data total or 6 bytes?

No.
It's actually 17 bytes. The "BIN" qualifier sends one byte for each bit, either "0" or "1". If you want 3 bytes, you need to delete the two "BIN":

HSEROUT [ ADRESH, ADRESL," "]

BTW, If you want fast a/d, then you need to start the new a/d conversion as soon as the last one was finished--don't wait until after your serial is sent.

[Charles Linquis]

The way to really get some speed is to send two bytes only. The TXregister is copied to the transmit shift register one clock cycle after you load the TX register, then the TX register can be loaded immedately again. Your routine can proceed while the bytes are being sent.

If you send more than two bytes, your routine has to wait until all but the last two bytes are shifted out.

Sending two bytes takes only microseconds (in program time), while sending more than two bytes takes those same microseconds + ((number of bytes - 2)* byte send time).

Another way to make things go fast - as Tenaja has said, don't use the ADCIN command. Instead, do it manually.

1. Set up the ADC channel and start the conversion.
2. Send some data.
3. Read the result of the conversion you started in step 1.
4. Set up the ADC channel and start the conversion.
5. Send some data.
7. Read the result of the conversion your started in step 4.
8. Go back to step 1.