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In summary, you are reading a byte where the bits are split across two ports?

I would do something like:

Read 1st Port
Mask and shift
Read 2nd Port
Mask and shift
'or' them together

If ne ...

I think the recommendation is for a scenario where 'out of control' code might actually execute the watchdog kick, and therefore will never recover. If 'Goto here' instructions were executed then it's ...

I used to get problems like this, although I think it was with pretty old versions of the compiler - not seen any issues for years now. Would be good to know if this is still 'lurking' in newer versio ...

See:

http://en.wikipedia.org/wiki/Printf

So '3.2' means *at least* 3 digits before the decimal point (adding spaces if reqd) and *at least* 2 digits after the decimal point.

FvM, thank you for the clarification re the CCS implementation - as good as a stack (except when you want recursion!)

thanks a lot. it helped me so much.

but if i need to rotate only the 4 low bits ?

lets say i have : 00001010
i need to rotate left only the 4 right bits.. so i wanna get: 00000101
how i do tha ...

I think you *can* return a struct in C - since a struct is a known length at compile time, stack space will be used to hold the struct members. It might not be too efficient of course since the return ...

#define MAX519_DATA_COMMAND_DAC0 0x00 //Set channel 0 on dual dac
#define MAX519_DATA_COMMAND_DAC1 0x02 //Set channel 1 on dual dac

DAC1 should be 0x01
I think your problem is that you need ' ...

120MHz PLL clock will give a 30MIPS instruction clock - I think this exceeds the devices rating, datasheet indicates 20MHz as a maximum. So if your using PLL modes stick to 80MHz

Its not just a coding issue, its understanding what the devices actually do - thats why it jumped out at me, you were sending the ADC setup/convert command and then (a few tens of nanoseconds later) e ...

spi_write(controlo);
//delay_ms(50); <<-- you need some delay here to let ADC convert!
RB2=spi_read(0); /*guarda os 1ºs 8 bits*/
delay_ms(25);
RB3=spi_ ...

setup_spi(SPI_MASTER|SPI_H_TO_L|SPI_XMIT_L_TO_H|SPI_CLK_DIV_4);

You only need to do this once, not every time you read the ADC. Wont do any harm though.

return (MSB||RB3);

Th ...

What i need to accomplish is after every 250us int from tmr0 i must jump from case WAIT into SAMPLE then after SAMPLE store the value in the array and increment n when n == 32 i must print the array. ...

As treitmey says, some form of powerline sounds ideal. You only need communication from trailer to tractor. Tractor couples an AC signal onto the reverse wire which the trailer picks up and rectifies ...

printf(lcd_putc("%2luC"),TEMP_IN);
lcd_gotoxy(14,1);
printf(lcd_putc("%2luC"),TEMP_OUT);

Dont you mean -

printf(lcd_putc, &q ...