S12 / MagniV MicrocontrollersのトピックRe: MC9S12XEP100 SPI Problem!

MC9S12XEP100 SPI Problem!

CIA_MAN275 — Wed, 06 Jul 2011 16:18:38 GMT

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!

Re: MC9S12XEP100 SPI Problem!

LeandroLeite — Fri, 15 Jul 2011 20:13:57 GMT

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

Re: MC9S12XEP100 SPI Problem!

CIA_MAN275 — Thu, 21 Jul 2011 14:02:47 GMT

The problem belongs to a missing cable!

Now it works!

Thanks a lot!