Why can't use the MSSP2 module for the SPI protocol

saj's picture
saj

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Joined: Sep 28, 2018

Replies: 19
Why can't use the MSSP2 module for the SPI protocol
November 2, 2019 - 12:55am

Hi all, I

I am using compiler CCS (v5.008) and MCU PIC18F46k22(has 2 MSSP module) , to display text in P10-DMD using MSSP2 module of the MCU.

---My target to use MSSP1 for hardware I2C (for RTC clock) and MSSP2 for hardware SPI (to display clock data in DMD).-----

For that, FIRST going to setup  Hardware SPI for DMD with MSSP2 Module, 

All things are going correct if MSSP1 is used with the code below SPI configuration---

#use SPI(SPI1, MODE = 0, BITS = 8, STREAM = P10_Panel_Driver)

 

but if MSSP2 is configure with below, the  the MSSP2 for SPI is not working even SCK2 pin is not responding.

#use SPI(SPI2, MODE = 0, BITS = 8, STREAM = P10_Panel_Driver)

 

Is there anythings what i am missing to setup MSSP2.
 
Anyone can help me?
 
Thanks

Aswinth Raj's picture

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Joined: Aug 16, 2016

Replies: 943
Try debugging
November 3, 2019 - 4:46pm

Hi how are you telling that it is not working?

 

but if MSSP2 is configure with below, the  the MSSP2 for SPI is not working even SCK2 pin is not responding.

#use SPI(SPI2, MODE = 0, BITS = 8, STREAM = P10_Panel_Driver)

The syntax looks fine to me. Are you trying to debug with simulation or with actual hardware. Also I am not sure why you are using CCS, Microchip XC8 is free to use and MPLAB has some good debugging options if you have pickit3. Anyways how are you testing your set-up?