MC9S12XEP100 SPI Problem!

[CIA_MAN275]

Hello!

I have a question! Is the following initialization for my MC9S12XEP100 okay?

Because my SPI-Bus, which worked on my HC12 don't work on this new evaluation Board!?

/* Init for SPI Interface */
  PTS |= 0x80;
  DDRS = DDRS | 0xF0; /* outputs */
  SPI0CR1 = 0x58; /* 0b01011000 */
  SPI0CR2 = 0; /* Normal mode */
  SPI0BR = 0x01; /* SPI clock */

I would appreciate it, if you could give me some help for my problem!

Thank you!

[LeandroLeite]

Take a look at the MODRR (Module Routing Register) register, it redirects the SPI to alternative ports.

I have the same trouble in my MC9S12XET256, then I set the bit MODRR4 and it works.

Good Luck!

Leandro

[CIA_MAN275 · Accepted solution]

The problem belongs to a missing cable!

Now it works!

Thanks a lot!