dsPic30F3014 SPI interfacing

[Double_Dion]

I am using MPLAB compiler and I am using a dsPic mcu. I am trying to interface with the spi to send data to a peripheral (audio attenuator) using C coding. I think I have the initialization correct, but I am stumped.



//************************************************** **********//

#include <stdio.h>
_FOSC(CSW_FSCM_OFF & XT_PLL8); // (clock switching and fail safe monitor are disabled &
// crystal connected to OSC1 is the clock source (8x PLL applied, primary oscillator)
_FWDT(WDT_OFF); // Watchdog timer disabled
_FBORPOR(PBOR_OFF & BORV_27 & PWRT_16 & MCLR_EN); // Brown-out reset disabled &_____&____& MCLR reset enabled


#define FCY 8000000 // Instruction cycle rate (Osc(4Mhz) x PLL(8) / 4) = 8 MIPS
#define T1Period 800 // T1Period = FCY*100 us = 800

void setup_spi();

int main()
{

setup_spi();

return 0;
}


//***********************
void setup_spi()
{

SPI1CON = 0x063E; // 0000 | 0110 | 0011 | 1110
SPI1STAT = 0x8000; // enable SPI port

printf("To C, or not to C: that is the question.\n");

return;
}[/CODE]

[Peanut]

... tech talk forum?!

[FanIn80]

I'm still staring at his avatar...

[Bigtime]

[Mike F]

I have no idea what you're talking about, but I'd be willing to bet any 6 year old could do it in between naps

[bcb]

uhhh.
Control Alt Delete???

[Regulator75]

Ctrl - F4

[MelBridgeman]

popen()
fputs()
?

not much of a device control dude

[ZedMan]

From my limited experience you most likely have to put the data you want to send into a specific register.
Have you looked at the documentation? Microchip inc. probably has it on their website.
Also try being less specific when you search, i.e. just dspic30f instead of the whole name.

-edit-
this should help... http://digikey.com/PTM/IndividualPTM...ng=en&ptm=5610

[Huntingwhale]

[Double_Dion]

No electrical engineers or robot/electronic hobbyists in here?

[Muta]

That **** scares me.

[FanIn80]

Oh wait a minute... I've seen this problem before. Just wiggle the wire a bit on the Catastrophic Converter, and you should be fine.

[Double_Dion]

Originally Posted by FanIn80

Oh wait a minute... I've seen this problem before. Just wiggle the wire a bit on the Catastrophic Converter, and you should be fine.

You're still looking at my avatar, aren't you?

[Phanuthier]

Poor sucker, Loren isn't helping you?

[Rathji]

Hey,

I went and found a thread of clearly intelligent people who are discussing this exact issue right now.

http://tinyurl.com/yz7jvbs

Its the top link! I don't know how you missed it!

[_Q_]

Originally Posted by Double_Dion

No electrical engineers or robot/electronic hobbyists in here?
I have searched all over the web for over 15 hours, Ive looked through textbooks, I have seen that tutorial, but nothing gives me an example. I know I need to send it the the SPI1BUF but I need the commands that will do that for me. Every example code I look at is either in a different language or it uses special compilers with specific libraries, so I can't decipher what is going on.

I'm an electrical engineer and this is the reason why I work in Power transmission and distribution. I don't have to look at C/C++ code ever again in my life. This kind of stuff down right scares the crap out of me, I could never understand why anyone would willingly put themselves through this.

[Double_Dion]

Originally Posted by _Q_

I'm an electrical engineer and this is the reason why I work in Power transmission and distribution. I don't have to look at C/C++ code ever again in my life. This kind of stuff down right scares the crap out of me, I could never understand why anyone would willingly put themselves through this.

I'm hoping to get a job in power.

[FlamingStuffedTiger]

I am no electrical engineer, but from my limited experiences with C, this is probably how its done:

Originally Posted by ZedMan

From my limited experience you most likely have to put the data you want to send into a specific register.
Have you looked at the documentation? Microchip inc. probably has it on their website.
Also try being less specific when you search, i.e. just dspic30f instead of the whole name.

-edit-
this should help... http://digikey.com/PTM/IndividualPTM...ng=en&ptm=5610

You just have to figure out which registers are involved in what you want to do and how to go about filling them properly in your language/library of choice. There should be documentation for all of this somewhere... Maybe like this?

http://www.microchip.com/wwwproducts...cName=en010344

Maybe I'm just spewing nonsense because this is definately not my area of expertise but, I hope it helps heh...

Btw, is this you?

http://www.electro-tech-online.com/m...terfacing.html

I'll bet you will get a better answer there than in the off-topic section of a hockey forum

[Rathji]

Using assembly to get to the registers seems like the easiest bet to me. Most API stuff pulls stuff directly from a specific register.