?? spi.c
字號:
#include <LPC21xx.H> // LPC21xx definitions
static void SPI0_Init(void)
{
// PINSEL0 |= 0x5500; // configure SPI0 pins
PINSEL1 = 0x2A8;
S1SPCCR = 12; // SCK = 1 MHz, counter > 8 and even
S1SPCR = 0x20; // Master, no interrupt enable
}
int main (void)
{
// Fosc = 12.000.000 MHz, PLL not used
volatile unsigned result;
SPI0_Init();
while (1)
{
result = S1SPDR;
S1SPDR = 0xAA; // send next SPI channel 0 data
while (!(S1SPSR & 0x80)) ; // wait for transfer completed
}
}
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