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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ch.h"
#include "hal.h"
#include "test.h"
#include "lwipthread.h"
#include "usbshell.h"
#include "web/web.h"
/*===========================================================================*/
/* Card insertion monitor. */
/*===========================================================================*/
#define POLLING_INTERVAL 10
#define POLLING_DELAY 10
/**
* @brief Card monitor timer.
*/
static VirtualTimer tmr;
/**
* @brief Debounce counter.
*/
static unsigned cnt;
/**
* @brief Card event sources.
*/
static EventSource inserted_event, removed_event;
/**
* @brief Insertion monitor timer callback function.
*
* @param[in] p pointer to the @p BaseBlockDevice object
*
* @notapi
*/
static void tmrfunc(void *p) {
BaseBlockDevice *bbdp = p;
/* The presence check is performed only while the driver is not in a
transfer state because it is often performed by changing the mode of
the pin connected to the CS/D3 contact of the card, this could disturb
the transfer.*/
blkstate_t state = blkGetDriverState(bbdp);
chSysLockFromIsr();
if ((state != BLK_READING) && (state != BLK_WRITING)) {
/* Safe to perform the check.*/
if (cnt > 0) {
if (blkIsInserted(bbdp)) {
if (--cnt == 0) {
chEvtBroadcastI(&inserted_event);
}
}
else
cnt = POLLING_INTERVAL;
}
else {
if (!blkIsInserted(bbdp)) {
cnt = POLLING_INTERVAL;
chEvtBroadcastI(&removed_event);
}
}
}
chVTSetI(&tmr, MS2ST(POLLING_DELAY), tmrfunc, bbdp);
chSysUnlockFromIsr();
}
/**
* @brief Polling monitor start.
*
* @param[in] p pointer to an object implementing @p BaseBlockDevice
*
* @notapi
*/
static void tmr_init(void *p) {
chEvtInit(&inserted_event);
chEvtInit(&removed_event);
chSysLock();
cnt = POLLING_INTERVAL;
chVTSetI(&tmr, MS2ST(POLLING_DELAY), tmrfunc, p);
chSysUnlock();
}
/*===========================================================================*/
/* Main and generic code. */
/*===========================================================================*/
/*
* Card insertion event.
*/
static void InsertHandler(eventid_t id) {
(void)id;
}
/*
* Card removal event.
*/
static void RemoveHandler(eventid_t id) {
(void)id;
}
/*
* Green LED blinker thread, times are in milliseconds.
*/
static WORKING_AREA(waThread1, 128);
static msg_t Thread1(void *arg) {
(void)arg;
chRegSetThreadName("blinker");
while (TRUE) {
palClearPad(GPIOC, GPIOC_LED);
chThdSleepMilliseconds(500);
palSetPad(GPIOC, GPIOC_LED);
chThdSleepMilliseconds(500);
}
}
/*
* Application entry point.
*/
int main(void) {
static const evhandler_t evhndl[] = {
InsertHandler,
RemoveHandler
};
struct EventListener el0, el1;
/*
* System initializations.
* - HAL initialization, this also initializes the configured device drivers
* and performs the board-specific initializations.
* - Kernel initialization, the main() function becomes a thread and the
* RTOS is active.
*/
halInit();
chSysInit();
/*
* Activates the shell on the USB-CDC.
*/
usInit();
/*
* Activates the serial driver 6 using the driver default configuration.
*/
sdStart(&SD6, NULL);
/*
* Activates the card insertion monitor.
*/
tmr_init(&SDCD1);
/*
* Creates the blinker thread.
*/
chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
/*
* Creates the LWIP threads (it changes priority internally).
*/
chThdCreateStatic(wa_lwip_thread, LWIP_THREAD_STACK_SIZE, NORMALPRIO + 1,
lwip_thread, NULL);
/*
* Creates the HTTP thread (it changes priority internally).
*/
chThdCreateStatic(wa_http_server, sizeof(wa_http_server), NORMALPRIO + 1,
http_server, NULL);
/*
* Normal main() thread activity, in this demo it does nothing except
* sleeping in a loop and listen for events.
*/
chEvtRegister(&inserted_event, &el0, 0);
chEvtRegister(&removed_event, &el1, 1);
while (TRUE) {
usStateCheck();
if (palReadPad(GPIOA, GPIOA_BUTTON_WKUP) != 0) {
}
chEvtDispatch(evhndl, chEvtWaitOne(ALL_EVENTS));
}
}
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