求问啊，我在使用MSP430F6638的SPI主从机例程时，主机的数据UCA0TXBUF确实在增加，我调试从机时，发现没有进入USCI_A0_ISR中断里面进行数据接收啊，请问这是怎么回事啊？而且从机里面有一个p1.4的中断，主机里面也没有啊，不太明白到底是怎么做的额？下面是例程中主机和从机的功能注释，主机：MSP430F66x Demo - USCI_A0, SPI 3-Wire Master Incremented Data//
// Description: SPI master talks to SPI slave using 3-wire mode. Incrementing
// data is sent by the master starting at 0x01. Received data is expected to
// be same as the previous transmission. USCI RX ISR is used to handle
// communication with the CPU, normally in LPM0. If high, P1.0 indicates
// valid data reception. Because all execution after LPM0 is in ISRs,
// initialization waits for DCO to stabilize against ACLK.
//
// ACLK = ~32.768kHz, MCLK = SMCLK = DCO ~ 1048kHz. BRCLK = SMCLK/2
//
// Use with SPI Slave Data Echo code example. The master code example uses
// a GPIO P1.1 to reset the SPI slave state machine.
从机： MSP430F66x Demo - USCI_A0, SPI 3-Wire Slave Data Echo
//
// Description: SPI slave talks to SPI master using 3-wire mode. Data received
// from master is echoed back. USCI RX ISR is used to handle communication,
// CPU normally in LPM0. Prior to initial data exchange, master pulses
// slaves USCI RST using an interrupt on P1.4.
//
// ACLK = ~32.768kHz, MCLK = SMCLK = DCO ~ 1048kHz
//
// Use with SPI Master Incremented Data code example.
我把程序下载进去，连接好两块单片机的引脚，那个指示灯也没有亮啊！有人知道怎么验证这个代码吗？ |
楼主
标题置顶
标题高亮
