本帖最后由 sinanjj 于 2011-11-5 13:38 编辑
// master
#include <ioCC2530.h>
void main()
{
CLKCONCMD = 0x80; while (CLKCONSTA != 0x80); // 32MHz
// SPI Master Mode
PERCFG |= 0x02; // map USART1 to its alternative 2 location. P1_4: SSN, P1_5: SCK, P1_6: MOSI, P1_7: MISO
P1SEL |= 0xE0; // P1_5, P1_6, and P1_7 are peripherals
P1SEL &= ~0x10; // P1_4 is GPIO (SSN)
P1DIR |= 0x10; // SSN is set as output
U1BAUD = 0x00; U1GCR |= 0x11; // Set baud rate to max (system clock frequency / 8)
U1CSR &= ~0xA0; // SPI Master Mode
// U1CSR &= ~0x80; U1CSR |= 0x20; // SPI Slave Mode
U1GCR &= ~0xC0; U1GCR |= 0x20; // MSB
for(;;) {
P1_4 = 0; // SSN LOW
U1DBUF = 0x55; while (!(U1CSR&0x02)); U1CSR &= 0xFD;
U1DBUF = 0x00; while (!(U1CSR&0x02)); U1CSR &= 0xFD;
unsigned char temp = U1DBUF;
P1_4 = 1; // SSN high
}
}
// slave
#include <ioCC2530.h>
void main()
{
CLKCONCMD = 0x80; while (CLKCONSTA != 0x80); // 32MHz
PERCFG |= 0x02; // map USART1 to its alternative 2 location. P1_4: SSN, P1_5: SCK, P1_6: MOSI, P1_7: MISO
P1SEL |= 0xF0; // P1_4, P1_5, P1_6, and P1_7 are peripherals
U1BAUD = 0x00; U1GCR |= 0x11; // Set baud rate to max (system clock frequency / 8)
U1CSR &= ~0x80; U1CSR |= 0x20; // SPI Slave Mode
U1GCR &= ~0xC0; U1GCR |= 0x20; // MSB
for(;;) {
U1DBUF = 0x88;
while (!(U1CSR&0x04)); U1CSR &= 0xFB;
unsigned char temp = U1DBUF;
}
} |
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