static void tmrcb(void *p) {
event_timer_t *etp = p;
chSysLockFromISR();
chEvtBroadcastI(&etp->et_es);
chVTDoSetI(&etp->et_vt, etp->et_interval, tmrcb, etp);
chSysUnlockFromISR();
}
/*
* This callback is invoked when a transmission has physically completed.
*/
static void txend2(UARTDriver *uartp) {
(void)uartp;
palClearPad(GPIOB, GPIOB_LED4);
chSysLockFromISR();
chVTResetI(&vt1);
chVTDoSetI(&vt1, MS2ST(5000), restart, NULL);
chSysUnlockFromISR();
}
/**
* @brief Virtual timers common callback.
*/
static void timer_cb(void const *arg) {
osTimerId timer_id = (osTimerId)arg;
timer_id->ptimer(timer_id->argument);
if (timer_id->type == osTimerPeriodic) {
chSysLockFromISR();
chVTDoSetI(&timer_id->vt, timer_id->millisec,
(vtfunc_t)timer_cb, timer_id);
chSysUnlockFromISR();
}
}
/*
* This callback is invoked when a character is received but the application
* was not ready to receive it, the character is passed as parameter.
*/
static void rxchar(UARTDriver *uartp, uint16_t c) {
(void)uartp;
(void)c;
/* Flashing the LED each time a character is received.*/
palSetPad(GPIOB, GPIOB_LED4);
chSysLockFromISR();
chVTResetI(&vt2);
chVTDoSetI(&vt2, MS2ST(200), ledoff, NULL);
chSysUnlockFromISR();
}
/* Triggered when the button is pressed or released. The LED4 is set to ON.*/
static void extcb1(EXTDriver *extp, expchannel_t channel) {
static virtual_timer_t vt4;
(void)extp;
(void)channel;
palSetPad(GPIOB, GPIOB_LED4);
chSysLockFromISR();
chVTResetI(&vt4);
/* LED4 set to OFF after 200mS.*/
chVTDoSetI(&vt4, MS2ST(200), led4off, NULL);
chSysUnlockFromISR();
}
/**
* @brief Puts the current thread to sleep into the specified state with
* timeout specification.
* @details The thread goes into a sleeping state, if it is not awakened
* explicitly within the specified timeout then it is forcibly
* awakened with a @p MSG_TIMEOUT low level message. The possible
* @ref thread_states are defined into @p threads.h.
*
* @param[in] newstate the new thread state
* @param[in] time the number of ticks before the operation timeouts, the
* special values are handled as follow:
* - @a TIME_INFINITE the thread enters an infinite sleep
* state, this is equivalent to invoking
* @p chSchGoSleepS() but, of course, less efficient.
* - @a TIME_IMMEDIATE this value is not allowed.
* .
* @return The wakeup message.
* @retval MSG_TIMEOUT if a timeout occurs.
*
* @sclass
*/
msg_t chSchGoSleepTimeoutS(tstate_t newstate, systime_t time) {
chDbgCheckClassS();
if (TIME_INFINITE != time) {
virtual_timer_t vt;
chVTDoSetI(&vt, time, wakeup, currp);
chSchGoSleepS(newstate);
if (chVTIsArmedI(&vt))
chVTDoResetI(&vt);
}
else {
chSchGoSleepS(newstate);
}
return currp->p_u.rdymsg;
}
