18F4620 SPI SCK not working Oshonsoft.

[camerart]

Hi,
Since changing to 18F4620 from 18LF4520, I haven't been able to get the SPI working.

The SPI SCK PIN doesn't appear to be switching as it should.
Here is a Logic analysis of the SPI PINS:

I've tried a PORT ON/OFF program, but the SCK PIN only switches between 0-0.5V

Camerart.

 

[camerart]

Hi,
I read that the SPI SCK cant run too fast. I'm not sure if this is true, but I set the Program to
INT OSC 8MHz
osccon = %01110010
SSPCON1 = %0010000

and got this:

C.

 

[jjw]

Hi,
I read that the SPI SCK cant run too fast. I'm not sure if this is true, but I set the Program to
INT OSC 8MHz
osccon = %01110010
SSPCON1 = %0010000

and got this:

C.

Oshonsoft uses software SPI.
No use for SSPCON1 = ...
It might interfere with software SPI?

 

[Ian Rogers]

Hi E

Eric and I showed you how to run a TFT in hardware SPI... I'll dig it out again if you don't have it..

 

[camerart]

Hi E

Eric and I showed you how to run a TFT in hardware SPI... I'll dig it out again if you don't have it..

Hi I,
If you mean this thread: https://www.electro-tech-online.com...ts-ideas-applications-open-discussion.152344/

I didn't really engage with it as I use the simpler 5110 screens at the moment, but hope to look deeper into the TFT type later.
C.

 

[camerart]

Hi,
I've now got the SPI SCK working.
(I've also got a program like a bag on knitting, so I won't post it
Thanks.
C.

 

[camerart]

Hi,
I spoke too soon, regarding getting the SPI SCK working, as it was working up to a certain point.

After much analysing, it turns out to be the second PIC on the same PCB, sending a tick, which stopped the SCL. I've turned off the second PIC for now, then I'll investigate later.

Thanks, C.