Added tamper functions

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@11893 110e8d01-0319-4d1e-a829-52ad28d1bb01

2 files changed, 89 insertions, 2 deletions

diff --git a/os/hal/ports/SAMA/LLD/RTCv1/hal_rtc_lld.c b/os/hal/ports/SAMA/LLD/RTCv1/hal_rtc_lld.c
index e35df0fe9..e408cd77d 100644
--- a/os/hal/ports/SAMA/LLD/RTCv1/hal_rtc_lld.c
+++ b/os/hal/ports/SAMA/LLD/RTCv1/hal_rtc_lld.c
@@ -337,6 +337,8 @@ void rtc_lld_init(void) {
   /* Disable write protection */

 //  syscDisableWP();

 

+  RTCD0.rtc->RTC_IDR = RTC_IDR_ALRDIS | RTC_IDR_SECDIS;

+

   /* Clear all status flag.*/

   RTCD0.rtc->RTC_SCCR = 0x3F;

 

@@ -373,6 +375,7 @@ void rtc_lld_set_time(RTCDriver *rtcp, const RTCDateTime *timespec) {
 

   timr = rtc_encode_time(timespec);

   calr = rtc_encode_date(timespec);

+  ver = rtcp->rtc->RTC_VER;

 

   /* Disable write protection */

 //  syscDisableWP();

@@ -445,6 +448,85 @@ void rtc_lld_get_time(RTCDriver *rtcp, RTCDateTime *timespec) {
 }

 

 /**

+ * @brief   Get tamper time.

+ * @note    The function can be called from any context.

+ *

+ * @param[in] rtcp      pointer to RTC driver structure

+ * @param[in] reg       number of register to return

+ * @param[out] timespec pointer to a @p RTCDateTime structure

+ *

+ * @note RTC_TSSR0 and RTC_TSDR cannot be overwritten, so once it has been written

+ *       all data are stored until the registers are reset: these register are

+ *       storing the first tamper occurrence after a read.

+ *       RTC_TSSR0 and RTC_TSDR are overwritten each time a tamper event is detected.

+ *

+ */

+void rtcGetTamperTime(RTCDriver *rtcp, uint8_t reg, RTCDateTime *timespec) {

+  uint32_t calr, timr;

+  uint32_t subs = 0;

+

+  timr  = rtcp->rtc->RTC_TS[reg].RTC_TSTR;

+  calr  = rtcp->rtc->RTC_TS[reg].RTC_TSDR;

+

+  rtc_decode_time(timr, timespec);

+  timespec->millisecond += subs;

+

+  /* Decoding date, this concludes the atomic read sequence.*/

+  rtc_decode_date(calr, timespec);

+

+  /* Retrieving the DST bit.*/

+  timespec->dstflag = 0;

+}

+

+/**

+ * @brief   Returns source of tamper register.

+ *

+ * @param[in] rtcp        pointer to RTC driver structure

+ * @param[in] reg         number of register source to return

+ *

+ * return content of RTC_SSRx register

+ *

+ * @note RTC_TSSR0  cannot be overwritten, so once it has been written

+ *       all data are stored until the registers are reset: that register is

+ *       storing the first tamper occurrence after a read.

+ *       RTC_TSSR1 is overwritten each time a tamper event is detected.

+ *

+ */

+uint32_t rtcGetTamperSource(RTCDriver *rtcp, uint8_t reg) {

+  return ((rtcp)->rtc->RTC_TS[reg].RTC_TSSR);

+}

+

+/**

+ * @brief   Returns numbers of total tamper events.

+ *

+ * @param[in] rtcp        pointer to RTC driver structure

+ *

+ * return numbers of total tamper events.

+ */

+uint32_t rtcGetTamperEventCounter(RTCDriver *rtcp) {

+  return ((rtcp)->rtc->RTC_TS[0].RTC_TSTR & RTC_TSTR_TEVCNT_Msk) >> RTC_TSTR_TEVCNT_Pos;

+}

+

+/**

+ * @brief   Returns backup or normal mode of tamper event.

+ *

+ * @param[in] rtcp        pointer to RTC driver structure

+ * @param[in] reg         number of register source to return

+ *

+ * @return 0x1 if system is in backup mode when tamper events occurs

+ *         0x0 if system is not in backup mode when tamper events occurs

+ *

+ * @note RTC_TSTR0  cannot be overwritten, so once it has been written

+ *       all data are stored until the registers are reset: that register is

+ *       storing the first tamper occurrence after a read.

+ *       RTC_TSTR1 is overwritten each time a tamper event is detected.

+ *

+ */

+uint8_t rtcGetTamperMode(RTCDriver *rtcp, uint8_t reg) {

+    return (rtcp)->rtc->RTC_TS[reg].RTC_TSTR & RTC_TSTR_BACKUP ? 0x1u : 0x0u;

+}

+

+/**

  * @brief   Set alarm time.

  * @note    The function can be called from any context.

  *

@@ -535,8 +617,8 @@ void rtc_lld_set_callback(RTCDriver *rtcp, rtccb_t callback) {
     /* IRQ sources enabled only after setting up the callback.*/

     rtcp->callback = callback;

 

-    rtcp->rtc->RTC_SCCR &= ~(RTC_SCCR_ALRCLR | RTC_SCCR_SECCLR | RTC_SCCR_TIMCLR |

-                             RTC_SCCR_CALCLR | RTC_SCCR_TDERRCLR);

+    rtcp->rtc->RTC_SCCR = RTC_SCCR_ALRCLR | RTC_SCCR_SECCLR | RTC_SCCR_TIMCLR |

+                          RTC_SCCR_CALCLR | RTC_SCCR_TDERRCLR;

     rtcp->rtc->RTC_IER = RTC_IER_ALREN | RTC_IER_SECEN;

   }

   else {

diff --git a/os/hal/ports/SAMA/LLD/RTCv1/hal_rtc_lld.h b/os/hal/ports/SAMA/LLD/RTCv1/hal_rtc_lld.h
index 25a5b6883..a5d4b8918 100644
--- a/os/hal/ports/SAMA/LLD/RTCv1/hal_rtc_lld.h
+++ b/os/hal/ports/SAMA/LLD/RTCv1/hal_rtc_lld.h
@@ -202,6 +202,11 @@ extern "C" {
                          rtcalarm_t alarm,

                          RTCAlarm *alarmspec);

   void rtc_lld_set_callback(RTCDriver *rtcp, rtccb_t callback);

+  /* Driver specific */

+  void rtcGetTamperTime(RTCDriver *rtcp, uint8_t reg, RTCDateTime *timespec);

+  uint32_t rtcGetTamperSource(RTCDriver *rtcp, uint8_t reg);

+  uint32_t rtcGetTamperEventCounter(RTCDriver *rtcp);

+  uint8_t rtcGetTamperMode(RTCDriver *rtcp, uint8_t reg);

 #ifdef __cplusplus

 }

 #endif