add:补充函数

luat/include/luat_pwm.h

@@ -14,6 +14,10 @@ typedef struct luat_pwm_conf {
     uint8_t reverse;
 } luat_pwm_conf_t;
 
+#ifdef __LUATOS__
+#else
+int luat_pwm_set_callback(int channel, CBFuncEx_t callback, void *param);
+#endif
 int luat_pwm_open(int channel, size_t period, size_t pulse, int pnum);
 int luat_pwm_setup(luat_pwm_conf_t* conf);
 int luat_pwm_capture(int channel,int freq);