Search found 2 matches

by Bjorn
Mon Sep 14, 2009 1:14 pm
Forum: Components (Comms)
Topic: SPI communication
Replies: 2
Views: 6676

Re: SPI communication

Hi Benj, We used to toggle the cs line with a digital I/O pin on the MCU. But that's also not working. So we decided, according to page 20 figure 5a, to permanently pull down the cs line to ground. According to figure 6 on page 20 the clock polarity should be idle high. We're not sure about the othe...
by Bjorn
Mon Sep 14, 2009 11:11 am
Forum: Components (Comms)
Topic: SPI communication
Replies: 2
Views: 6676

SPI communication

Hi, I use a MCU (18f4685) and ADC (AD7738). I've connected SDO (MCU) to DIN (ADC), SDI (MCU) to DOUT (ADC), SCK (MCU) to SCK (ADC) and connected the #CS (ADC) to the ground. In my attached flowcode programme first I init the SPI hardware and reset the ADC by sending 0,1,1,1 over SPI. After that I se...