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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2012-06-26 18:18:14 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2012-06-26 18:18:14 +0000 |
| commit | 9492ff4976cb9e8af40c9a6715b7d9f7ef5f9428 (patch) | |
| tree | 1f6a61a57f6502c1c072cc1f0834da6d006919df /demos/ARMCM3-STM32F103ZG-FATFS/main.c | |
| parent | 853b0fd51c80d9b8640639321a950f16800d57d4 (diff) | |
| download | ChibiOS-9492ff4976cb9e8af40c9a6715b7d9f7ef5f9428.tar.gz ChibiOS-9492ff4976cb9e8af40c9a6715b7d9f7ef5f9428.tar.bz2 ChibiOS-9492ff4976cb9e8af40c9a6715b7d9f7ef5f9428.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@4349 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'demos/ARMCM3-STM32F103ZG-FATFS/main.c')
| -rw-r--r-- | demos/ARMCM3-STM32F103ZG-FATFS/main.c | 50 |
1 files changed, 28 insertions, 22 deletions
diff --git a/demos/ARMCM3-STM32F103ZG-FATFS/main.c b/demos/ARMCM3-STM32F103ZG-FATFS/main.c index b21e7a864..b44612091 100644 --- a/demos/ARMCM3-STM32F103ZG-FATFS/main.c +++ b/demos/ARMCM3-STM32F103ZG-FATFS/main.c @@ -34,8 +34,8 @@ /* Card insertion monitor. */
/*===========================================================================*/
-#define SDC_POLLING_INTERVAL 10
-#define SDC_POLLING_DELAY 10
+#define POLLING_INTERVAL 10
+#define POLLING_DELAY 10
/**
* @brief Card monitor timer.
@@ -55,47 +55,55 @@ static EventSource inserted_event, removed_event; /**
* @brief Insertion monitor timer callback function.
*
- * @param[in] p pointer to the @p SDCDriver object
+ * @param[in] p pointer to the @p BaseBlockDevice object
*
* @notapi
*/
static void tmrfunc(void *p) {
- SDCDriver *sdcp = 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 (cnt > 0) {
- if (sdcIsCardInserted(sdcp)) {
- if (--cnt == 0) {
- chEvtBroadcastI(&inserted_event);
+ 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
- cnt = SDC_POLLING_INTERVAL;
- }
- else {
- if (!sdcIsCardInserted(sdcp)) {
- cnt = SDC_POLLING_INTERVAL;
- chEvtBroadcastI(&removed_event);
+ else {
+ if (!blkIsInserted(bbdp)) {
+ cnt = POLLING_INTERVAL;
+ chEvtBroadcastI(&removed_event);
+ }
}
}
- chVTSetI(&tmr, MS2ST(SDC_POLLING_DELAY), tmrfunc, sdcp);
+ chVTSetI(&tmr, MS2ST(POLLING_DELAY), tmrfunc, bbdp);
chSysUnlockFromIsr();
}
/**
* @brief Polling monitor start.
*
- * @param[in] sdcp pointer to the @p SDCDriver object
+ * @param[in] p pointer to an object implementing @p BaseBlockDevice
*
* @notapi
*/
-static void tmr_init(SDCDriver *sdcp) {
+static void tmr_init(void *p) {
chEvtInit(&inserted_event);
chEvtInit(&removed_event);
chSysLock();
- cnt = SDC_POLLING_INTERVAL;
- chVTSetI(&tmr, MS2ST(SDC_POLLING_DELAY), tmrfunc, sdcp);
+ cnt = POLLING_INTERVAL;
+ chVTSetI(&tmr, MS2ST(POLLING_DELAY), tmrfunc, p);
chSysUnlock();
}
@@ -276,8 +284,6 @@ static void InsertHandler(eventid_t id) { static void RemoveHandler(eventid_t id) {
(void)id;
- if (sdcGetDriverState(&SDCD1) == SDC_ACTIVE)
- sdcDisconnect(&SDCD1);
fs_ready = FALSE;
}
|