CC1310中定时器怎么用？

jad json

Intellectual 360 points

Other Parts Discussed in Thread: CC1310, SYSBIOS

向各位大神请教一下，我想实现用cc1310开启定时器定时执行某个任务，定时器相关配置设置怎么弄？又可以参考的例子吗，谢谢了！

9 年多前

0 xin wang22 9 年多前

Expert 1166 points

http://www.deyisupport.com/question_answer/wireless_connectivity/f/45/t/114594.aspx

0 Maka Luo 9 年多前

TI__Genius 12740 points

clock_CC1310_LAUNCHXL_TI_CC1310F128

TI RTOS for CC13XX and CC26XX 下的Clock例程。

0 jad json 9 年多前回复 Maka Luo

Intellectual 360 points

Int main()
{
    /* Construct BIOS Objects */
    Clock_Params clkParams;

    /* Call board init functions */
    Board_initGeneral();

    Clock_Params_init(&clkParams);
    clkParams.period = 5000/Clock_tickPeriod;
    clkParams.startFlag = TRUE;

    /* Construct a periodic Clock Instance */
    Clock_construct(&clk0Struct, (Clock_FuncPtr)clk0Fxn,
                    5000/Clock_tickPeriod, &clkParams);

    clkParams.period = 0;
    clkParams.startFlag = FALSE;

    /* Construct a one-shot Clock Instance */
    Clock_construct(&clk1Struct, (Clock_FuncPtr)clk1Fxn,
                    11000/Clock_tickPeriod, &clkParams);

    clk2Handle = Clock_handle(&clk1Struct);

    Clock_start(clk2Handle);

    BIOS_start();    /* does not return */
    return(0);
}

请教一下，这里的周期事件运行两次，一次性事件运行一次是怎么设置？1）定时时间间隔，在哪设置？2）如果要一直定时执行某个任务，而非只执行两次，怎么做？谢谢了

0 xin wang22 9 年多前回复 jad json

Expert 1166 points

没有研究clock

#include <stdlib.h> 
#include <xdc/std.h> 
#include <xdc/runtime/System.h> 
#include <ti/sysbios/BIOS.h> 
#include <ti/sysbios/knl/Task.h> 
#include <ti/sysbios/knl/Mailbox.h> 
#include <ti/sysbios/knl/Event.h> 
/* Drivers */ 
#include <ti/drivers/rf/RF.h> 
#include <ti/drivers/PIN.h> 
#include <driverlib/timer.h> 
#include <ti/drivers/Power.h> 
#include <ti/drivers/power/PowerCC26XX.h> 
/* Board Header files */ 
#include "Board.h" 
PIN_Handle ledPinHandle; 
PIN_State ledPinState; 
#define TASK_STACK_SIZE 1024 
#define TASK_PRIORITY   2 
Hwi_Struct timerHwi; 
void waitingTaskFunction(UArg arg0, UArg arg1); 
static Task_Params waitingTaskParams; 
Task_Struct waitingTask; 
static uint8_t waitingTaskStack[TASK_STACK_SIZE]; 
void interruptTimerA(UArg arg0) 
{ 
  uint32_t status = TimerIntStatus(GPT0_BASE, true); 
  PIN_setOutputValue(ledPinHandle, Board_LED3,1); 
  if (TIMER_TIMA_TIMEOUT & status) { 
    TimerIntClear(GPT0_BASE, TIMER_TIMA_TIMEOUT); 
  } 
  PIN_setOutputValue(ledPinHandle, Board_LED3,0); 
} 
void timerInit(void) 
{ 
  /* Switches the peripheral power domain on */ 
  Power_setDependency(PowerCC26XX_PERIPH_GPT0); 
  /* Prevents the controller from going to standby */ 
  Power_setConstraint(PowerCC26XX_SB_DISALLOW); 
  // register ISR and enable hardware interrupt for timer 
  Hwi_Params params; 
  Hwi_Params_init(&params); 
  params.enableInt = TRUE; 
  Hwi_construct(&timerHwi, INT_GPT0A, &interruptTimerA, &params, NULL); 
  /* Configure the timer hardware */ 
  TimerDisable(GPT0_BASE, TIMER_A); 
  TimerConfigure(GPT0_BASE, TIMER_CFG_SPLIT_PAIR | TIMER_CFG_A_PERIODIC | TIMER_CFG_B_PERIODIC); 
  TimerPrescaleSet(GPT0_BASE, TIMER_A, 255); // prescaler is 256 - 187.5 kHz 
  TimerLoadSet(GPT0_BASE, TIMER_A, 313); // a random number 
  TimerIntClear(GPT0_BASE, TIMER_TIMA_TIMEOUT); 
  TimerIntEnable(GPT0_BASE, TIMER_TIMA_TIMEOUT); 
  TimerEnable(GPT0_BASE, TIMER_A); 
} 
void WaitingTask_init(void) 
{ 
  Task_Params_init(&waitingTaskParams); 
  waitingTaskParams.stackSize = TASK_STACK_SIZE; 
  waitingTaskParams.priority = TASK_PRIORITY; 
  waitingTaskParams.stack = &waitingTaskStack; 
  Task_construct(&waitingTask, waitingTaskFunction, &waitingTaskParams, NULL); 
} 
void waitingTaskFunction(UArg arg0, UArg arg1) 
{ 
  timerInit(); 
  for (;;) { 
    Task_sleep(30 *1000 / Clock_tickPeriod);               // 30 ms wait 
    PIN_setOutputValue(ledPinHandle, Board_LED2, 1); 
    PIN_setOutputValue(ledPinHandle, Board_LED2, 0); 
  } 
} 
int main(void) 
{ 
  Board_initGeneral(); 
  ledPinHandle = PIN_open(&ledPinState, BoardGpioInitTable); 
  if (!ledPinHandle) { 
    System_abort("Error initializing board LED pins\n"); 
  } 
  WaitingTask_init(); 
  BIOS_start(); 
  return (0); 

}

亲测可用，而且更加直观

0 jad json 9 年多前回复 xin wang22

Intellectual 360 points

好的，多谢大侠，我看看！

0 jad json 9 年多前回复 xin wang22

Intellectual 360 points

有些地方不太明白什么意思，可否解释一下？

1）在for循环里面，是每隔30ms让led2亮灭一下吗？

2）timeInit()定时器初始化之后，定时器进入中断是让led3亮灭一下吗？

3）

TimerPrescaleSet(GPT0_BASE, TIMER_A, 255); // prescaler is 256 - 187.5 kHz

TimerLoadSet(GPT0_BASE, TIMER_A, 313); // a random number

这两句的作用是什么？

4）定时器定时时间间隔怎么设置？

谢谢了

0 xin wang22 9 年多前回复 jad json

Expert 1166 points

TimerConfigure(GPT0_BASE, TIMER_CFG_SPLIT_PAIR | TIMER_CFG_A_PERIODIC | TIMER_CFG_B_PERIODIC);

TimerPrescaleSet(GPT0_BASE, TIMER_A, 255); // prescaler is 256 - 187.5 kHz

TimerLoadSet(GPT0_BASE, TIMER_A, 313); // a random number

这三句决定了计时时间，分别是模式、分频、计时初值

低于 1GHz

低于 1GHz 论坛

CC1310中定时器怎么用？