CC1310中定时器怎么用？
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！
http://www.deyisupport.com/question_answer/wireless_connectivity/f/45/t/114594.aspx
clock_CC1310_LAUNCHXL_TI_CC1310F128
TI RTOS for CC13XX and CC26XX 下的Clock例程。
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
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(¶ms);
params.enableInt = TRUE;
Hwi_construct(&timerHwi, INT_GPT0A, &interruptTimerA, ¶ms, 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
好的，多谢大侠，我看看！
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
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