spi data register

lssuer — Sun, 23 Apr 2006 04:24:11 GMT

I am trying to send data from one hs12 to another hs12using spi and whenever i write the data to the SPI0DR it doesnt work. It looks like the data never gets written to the register.

Here is my routine firs the setup then the send

void init_spi(void){
DDRS = 0xE2;
SPI0CR1 = 0x50;
SPI0CR2 = 0x00;
SPI0BR = 0x00;
}

void data_transfer(void)
{
// Declare Variables
for (i=0;i5;i++){

PTH &= 0x7F;
SPI0DR = data_array[i];
while (!(SPI0SR & 0x80));
PTH |= 0x80;
}
}

can anybody see or know any reason why this wouldnt send the data or copy the data into the SPI0DR register to be sent.

thanks

Re: spi data register

imajeff — Mon, 24 Apr 2006 23:04:16 GMT

Some pointers:

1. The code you posted won't compile, so I know you have not tested it in a simple form.

2. Your selected baud rate is rather fast. Try a fairly slow rate just to make sure that's not the problem.

topic spi data register in S12 / MagniV Microcontrollers

spi data register

Re: spi data register