From 65520865b124dc0d47338e5384f48c8f31c9ebdd Mon Sep 17 00:00:00 2001
From: Hauke Petersen <hauke.petersen@fu-berlin.de>
Date: Fri, 7 Nov 2014 12:25:59 +0100
Subject: [PATCH] cpu/stm32f1: adjusted to RTT interface changes
---
cpu/stm32f1/periph/rtt.c | 32 ++++++++++++++++++++++++++++++--
1 file changed, 30 insertions(+), 2 deletions(-)
diff --git a/cpu/stm32f1/periph/rtt.c b/cpu/stm32f1/periph/rtt.c
index 3e4c54d779..281e840962 100644
--- a/cpu/stm32f1/periph/rtt.c
+++ b/cpu/stm32f1/periph/rtt.c
@@ -42,9 +42,15 @@ inline void _rtt_leave_config_mode(void);
/*
* callback and argument for an active alarm
*/
-static rtt_alarm_cb_t alarm_cb;
+static rtt_cb_t alarm_cb;
static void *alarm_arg;
+/*
+ * callback and argument for overflow callback
+ */
+static rtt_cb_t overflow_cb;
+static void *overflow_arg;
+
void rtt_init(void)
{
rtt_poweron();
@@ -69,6 +75,24 @@ void rtt_init(void)
_rtt_leave_config_mode();
}
+void rtt_set_overflow_cb(rtt_cb_t cb, void *arg)
+{
+ overflow_cb = cb;
+ overflow_arg = arg;
+ _rtt_enter_config_mode();
+ /* Enable overflow interrupt */
+ RTT_DEV->CRH |= RTC_CRH_OWIE;
+ _rtt_leave_config_mode();
+}
+
+void rtt_clear_overflow_cb(void)
+{
+ _rtt_enter_config_mode();
+ /* Clear overflow interrupt */
+ RTT_DEV->CRH &= ~(RTC_CRH_OWIE);
+ _rtt_leave_config_mode();
+}
+
uint32_t rtt_get_counter(void)
{
/* wait for syncronization */
@@ -97,7 +121,7 @@ uint32_t rtt_get_alarm(void)
return (((uint32_t)RTT_DEV->ALRH << 16 ) | (uint32_t)(RTT_DEV->ALRL));
}
-void rtt_set_alarm(uint32_t alarm, rtt_alarm_cb_t cb, void *arg)
+void rtt_set_alarm(uint32_t alarm, rtt_cb_t cb, void *arg)
{
_rtt_enter_config_mode();
@@ -169,6 +193,10 @@ void RTT_ISR(void)
RTT_DEV->CRL &= ~(RTC_CRL_ALRF);
alarm_cb(alarm_arg);
}
+ if (RTT_DEV->CRL & RTC_CRL_OWF) {
+ RTT_DEV->CRL &= ~(RTC_CRL_OWF);
+ overflow_cb(overflow_arg);
+ }
if (sched_context_switch_request) {
thread_yield();
}
--
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