msp430x21x2_ta1_18.c

来自「msp430f21x2程序例程」· C语言 代码 · 共 16 行

//******************************************************************************
//  MSP430F21x2 Demo - Timer1_A2, PWM TA1_1, Up Mode, HF XTAL ACLK
//
//  Description: This program generates one PWM output on P3.7 using
//  Timer1_A2 configured for up mode. The value in TA1CCR0, 512-1, defines the
//  period and the value in TA1CCR1 the PWM duty cycle. Using
//  HF XTAL ACLK as TA1CLK, the timer period is HF XTAL/512 with a 75% duty
//  cycle on P3.7
//  ACLK = MCLK = TA1CLK = HF XTAL
//  //* HF XTAL REQUIRED AND NOT INSTALLED ON FET *//
//  //* Min Vcc required varies with MCLK frequency - refer to datasheet *//
//
//               MSP430F21x2
//            -----------------
//        /|\|              XIN|-
//         | |                 | HF XTAL (3