[参考译文] EK-TM4C123GXL：关闭 A 配置的 GPIO 定时器

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https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1210761/ek-tm4c123gxl-switch-a-configured-gpio-timer-off

器件型号：EK-TM4C123GXL

禁用计时器后的默认值。我还要关闭已配置的引脚。

我怎么能做到这一点呢？

因为当我再次启动两个计时器时。我想以预先配置的状态启动。

void init_TIMER_0()
{
    MAP_SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);
    while(!MAP_SysCtlPeripheralReady(SYSCTL_PERIPH_TIMER0));
    
    // Timer 0A is the data signal 1: PB6
    // Timer 0B is the udma trigger signal to GPIO: PB7
    
    MAP_GPIOPinConfigure(GPIO_PB6_T0CCP0);
    MAP_GPIOPinConfigure(GPIO_PB7_T0CCP1);
    
    MAP_GPIOPinTypeTimer(GPIO_PORTB_BASE, GPIO_PIN_6);
    MAP_GPIOPinTypeTimer(GPIO_PORTB_BASE, GPIO_PIN_7);
    
    MAP_TimerConfigure(TIMER0_BASE, TIMER_CFG_SPLIT_PAIR | 
                       TIMER_CFG_A_PWM | TIMER_CFG_B_PWM);
    
    MAP_TimerLoadSet(TIMER0_BASE, TIMER_BOTH, 
                     (SysCtlClockGet()/SIGNAL_FREQUENZ) - 1);
    
    // start led signal with the reset signal
    MAP_TimerMatchSet(TIMER0_BASE, TIMER_A, SIGNAL_RESET);
    
    // DMA Request
    MAP_TimerMatchSet(TIMER0_BASE, TIMER_B, SIGNAL_DMA);
}

1 年多前