CC1310 PWM输出脚配置问题

我使用SDK带的PWM点灯的例程，发现无法找到定义PWM输出口的代码：

Void pwmLEDFxn(UArg arg0, UArg arg1)
{
PWM_Handle pwm1;
PWM_Params params;
uint16_t pwmPeriod = 3000; // Period and duty in microseconds
uint16_t duty = 0;
uint16_t dutyInc = 100;

PWM_Params_init(&params);
params.dutyUnits = PWM_DUTY_US;
params.dutyValue = 0;
params.periodUnits = PWM_PERIOD_US;
params.periodValue = pwmPeriod;
pwm1 = PWM_open(Board_PWM0, &params);

这里显示打开的是Board_PWM0，我往下找依次是：

/* Generic PWM instance identifiers */
#define Board_PWM0 CC1310DK_4XD_PWM0
#define Board_PWM1 CC1310DK_4XD_PWM1
#define Board_PWM2 CC1310DK_4XD_PWM2
#define Board_PWM3 CC1310DK_4XD_PWM3
#define Board_PWM4 CC1310DK_4XD_PWM4
#define Board_PWM5 CC1310DK_4XD_PWM5
#define Board_PWM6 CC1310DK_4XD_PWM6
#define Board_PWM7 CC1310DK_4XD_PWM7

typedef enum CC1310DK_4XD_PWM
{
CC1310DK_4XD_PWM0 = 0,
CC1310DK_4XD_PWM1,
CC1310DK_4XD_PWM2,
CC1310DK_4XD_PWM3,
CC1310DK_4XD_PWM4,
CC1310DK_4XD_PWM5,
CC1310DK_4XD_PWM6,
CC1310DK_4XD_PWM7,
CC1310DK_4XD_PWMCOUNT
} CC1310DK_4XD_PWM;

并没有看到制度具体的IO口，反而在同样的头文件找到这样的定义：

/* PWM outputs */
#define Board_PWMPIN0 Board_DK_LED3
#define Board_PWMPIN1 Board_DK_LED4
#define Board_PWMPIN2 PIN_UNASSIGNED
#define Board_PWMPIN3 PIN_UNASSIGNED
#define Board_PWMPIN4 PIN_UNASSIGNED
#define Board_PWMPIN5 PIN_UNASSIGNED
#define Board_PWMPIN6 PIN_UNASSIGNED
#define Board_PWMPIN7 PIN_UNASSIGNED

#define Board_LED_ON 1 /* LEDs on CC1310 are active high */
#define Board_LED_OFF 0
#define Board_DK_LED1 PIN_UNASSIGNED
#define Board_DK_LED2 PIN_UNASSIGNED
#define Board_DK_LED3 IOID_5 /* P1.2 */

这两者是在哪里关联起来的呢？

Loops：

就是在open里面做的初始化啊（关联）。 CC1310DK_4XD_PWM 这个只是枚举啊。你是想清楚具体open函数里面怎么控制的吗？

yanqing zhou：

回复 Loops:

是的，我想知道哪里可以查看到具体的实现源码，因为在CCS里很多具体的实现函数都看不到

Felix ZF：

在CC1310DK_7XD.h文件里

/* Generic PWM instance identifiers */#define Board_PWM0 CC1310_LAUNCHXL_PWM0#define Board_PWM1 CC1310_LAUNCHXL_PWM1#define Board_PWM2 CC1310_LAUNCHXL_PWM2#define Board_PWM3 CC1310_LAUNCHXL_PWM3#define Board_PWM4 CC1310_LAUNCHXL_PWM4#define Board_PWM5 CC1310_LAUNCHXL_PWM5#define Board_PWM6 CC1310_LAUNCHXL_PWM6#define Board_PWM7 CC1310_LAUNCHXL_PWM7

Felix ZF：

回复 Felix ZF:

在CC1310DK_4XD.h文件里

/* Generic PWM instance identifiers */#define Board_PWM0 CC1310DK_4XD_PWM0#define Board_PWM1 CC1310DK_4XD_PWM1#define Board_PWM2 CC1310DK_4XD_PWM2#define Board_PWM3 CC1310DK_4XD_PWM3#define Board_PWM4 CC1310DK_4XD_PWM4#define Board_PWM5 CC1310DK_4XD_PWM5#define Board_PWM6 CC1310DK_4XD_PWM6#define Board_PWM7 CC1310DK_4XD_PWM7

Felix ZF：

回复 yanqing zhou:

C:\TI\tirtos_cc13xx_cc26xx_2_21_00_06\products\tidrivers_cc13xx_cc26xx_2_21_00_04\packages\ti\drivers\pwm\PWMTimerCC26XX.c

这个文件里有具体实现，CCS不会跳转到.c文件，只会跳转到.h文件。

你可以自己到对应文件夹找到.c文件查看具体实现。