这是一个正常的时序,RC522(51模拟).
这是MSP430 eUSCI_SPI.关键代码如下.
P1SEL |= BIT4 | BIT5;
P2SEL |= BIT4;
UCA1CTLW0 |= UCSWRST;
UCA1CTLW0 |= UCMST | UCSYNC | UCMSB;
UCA1CTLW0 |= UCSSEL_2;
UCA0BRW_L = 0x02;
UCA0BRW_H = 0;
UCA1MCTLW = 0;
UCA1CTLW0 &= ~UCSWRST;
怎么数据不准呢?根据我测试74HC595是可以的,RC522和nRF24L01,ENC28J60都不行.不可能他们都坏了的吧.
