FTDI DLP-245PB Module A/D converter problem?

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btbass

Joined: 20 Jul 2001
Posts: 1187
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Location: Oberon

25 Oct 2009 8:38 FTDI DLP-245PB Module A/D converter problem?

I am trying to use the A/D converter on a FTDI DLP-245PB module. I send the byte array
byte[] setup_ad = {0x03, 0xA8, 0x89, 0x81, 0xA3};
to set up the A/D and send
byte[] read_switch = {0x02, 0xA9, 0x02, 0xA9};
to read a channel.
All I get back is 3 bytes of 0x55?
Has anybody sucsessfully used this module. If so, can they give me any pointers as to whats going wrong?