Search found 4 matches

by broth1969
Tue Jul 23, 2019 2:22 pm
Forum: EVE2 & EVE3 & EVE4 SPI TFT's
Topic: EVE2 QSPI not responding
Replies: 5
Views: 4964

Re: EVE2 QSPI not responding

After slowing the SPI clock down below 11Mhz for initialization we have a backlight and are reading the DEV_ID correctly!
by broth1969
Tue Jul 23, 2019 1:50 pm
Forum: EVE2 & EVE3 & EVE4 SPI TFT's
Topic: EVE2 QSPI not responding
Replies: 5
Views: 4964

Re: EVE2 QSPI not responding

I don't have any of the USB2SPI bridges, or an Arduino Scoodo Shields....yet. I'd hope to not have to go that route but if I do need to can you suggest part numbers and the best place to order these host examples? Here are some screen shots of the initialization sequence from our logic analyzer trac...
by broth1969
Mon Jul 22, 2019 2:41 pm
Forum: EVE2 & EVE3 & EVE4 SPI TFT's
Topic: EVE2 QSPI not responding
Replies: 5
Views: 4964

Re: EVE2 QSPI not responding

From software: "According to the programmers guide, you need to send CLKEXT and ACTIVE commands before trying to read any registers. I’ve added this code now, but I’m still getting 0’s back for both the REG_ID and for the DeviceID reads." We have the trace in a Saleae logic analyzer file. ...
by broth1969
Thu Jul 18, 2019 3:18 pm
Forum: EVE2 & EVE3 & EVE4 SPI TFT's
Topic: EVE2 QSPI not responding
Replies: 5
Views: 4964

EVE2 QSPI not responding

I have a EVE2-43A-BLM-TPN connected to our FPGA platform with Ambiq Micros MSPI quad master controller. Attached is the schematic connection through a 1.8V to 3.3V level shifter to the 20 pin FPC connector on J5. We cannot get any response from the FT812 on the EVE2 module when we try to read the el...