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楼主 |
发表于 2012-10-5 22:22:36
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BBC 发表于 2012-10-5 18:15 
是哪个芯片呀....完整的程序？......TAR是主计数器的计数寄存器吧，另外还有几个比较模块的，一般中断、端 ...
MSP430F5438。不够哪个芯片都差不多一样。如果要定时可以用TAR来定时吗？程序一（TI 的C代码例子）如下：
//******************************************************************************
// MSP430F54x Demo - Timer_A3, Toggle P1.0, CCR0 Up Mode ISR, DCO SMCLK
//
// Description: Toggle P1.0 using software and TA_1 ISR. Timer1_A is
// configured for up mode, thus the timer overflows when TAR counts
// to CCR0. In this example, CCR0 is loaded with 50000.
// ACLK = n/a, MCLK = SMCLK = TACLK = default DCO ~1.045MHz
//
// MSP430F5438
// ---------------
// /|\| |
// | | |
// --|RST |
// | |
// | P1.0|-->LED
//
// M Smertneck / W. Goh
// Texas Instruments Inc.
// September 2008
// Built with CCE Version: 3.2.2 and IAR Embedded Workbench Version: 4.11B
//******************************************************************************
#include "msp430x54x.h"
void main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
P1DIR |= 0x01; // P1.0 output
TA1CCTL0 = CCIE; // CCR0 interrupt enabled
TA1CCR0 = 50000;
TA1CTL = TASSEL_2 + MC_1 + TACLR; // SMCLK, upmode, clear TAR
__bis_SR_register(LPM0_bits + GIE); // Enter LPM0, enable interrupts
__no_operation(); // For debugger
}
// Timer A0 interrupt service routine
#pragma vector=TIMER1_A0_VECTOR
__interrupt void TIMER1_A0_ISR(void)
{
P1OUT ^= 0x01; // Toggle P1.0
}
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发表于 2012-10-5 17:54:12
我自己都晕了，不知道自己说了啥......
