usrapp.h:
struct usrapp_t
{
struct vsfsm_pt_t pt;
struct vsfsm_t sm;
bool toggle;
};
extern struct usrapp_t usrapp;
void usrapp_srt_init(struct usrapp_t *app);
usrapp.c:
#include "vsf.h"
#include "usrapp.h"
vsf_err_t usrapp_led_thread(struct vsfsm_pt_t *pt, vsfsm_evt_t evt);
struct usrapp_t usrapp =
{
.pt.thread = usrapp_led_thread,
.pt.user_data = &usrapp,
};
#define USRAPP_EVT_ON1S VSFSM_EVT_USER
vsf_err_t usrapp_led_thread(struct vsfsm_pt_t *pt, vsfsm_evt_t evt)
{
struct usrapp_t *app = (struct usrapp_t *)pt->user_data;
vsfsm_pt_begin(pt);
vsfhal_gpio_init(0);
vsfhal_gpio_config_pin(0, 1, GPIO_OUTPP);
vsftimer_create(pt->sm, 1000, -1, USRAPP_EVT_ON1S);
while (1)
{
if (app->toggle)
vsfhal_gpio_set(0, 1 << 1);
else
vsfhal_gpio_clear(0, 1 << 1);
app->toggle = !app->toggle;
vsfsm_pt_wfe(pt, USRAPP_EVT_ON1S);
}
vsfsm_pt_end(pt);
return VSFERR_NONE;
}
void usrapp_srt_init(struct usrapp_t *app)
{
vsfsm_pt_init(&app->sm, &app->pt);
}
这里，usrapp_led_thread中的app变量，在每次调用的时候，都会初始化。代码功能和之前的事件驱动的闪灯程序一样。
