From 0b20b8cb603acf811b8335f04d570d722fd78b1e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Wiesner=20Andr=C3=A1s?= <wabe@t-email.hu>
Date: Sun, 25 Dec 2022 11:03:01 +0100
Subject: [PATCH] timer aded

---
 arp_cache.c |  2 +-
 timer.c     | 22 ++++++++++++++++++++++
 timer.h     | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 73 insertions(+), 1 deletion(-)
 create mode 100644 timer.c
 create mode 100644 timer.h

diff --git a/arp_cache.c b/arp_cache.c
index 596745b..f08da10 100644
--- a/arp_cache.c
+++ b/arp_cache.c
@@ -76,7 +76,7 @@ const ArpEntry *arpc_get_ask(ArpCache *arpc, ip4_addr ip) {
     uint32_t attemptN = 0;
     while (((entry = arpc_get(arpc, ip)) == NULL) && (attemptN < ETHLIB_ARP_RETRY_COUNT)) {
         arpc_ask(arpc, ip);
-        ETHLIB_SLEEP(20);
+        ETHLIB_SLEEP_MS(20);
         //attemptN++;
     }
 
diff --git a/timer.c b/timer.c
new file mode 100644
index 0000000..28262c8
--- /dev/null
+++ b/timer.c
@@ -0,0 +1,22 @@
+//
+// Created by epagris on 2022.12.21..
+//
+
+#include "timer.h"
+#include "dynmem.h"
+#include "utils.h"
+
+Timer *timer_new(uint32_t maxSched) {
+    uint32_t tmrHdrSize = sizeof(TimePoint) + sizeof(AlarmAssignment *) + 2 * sizeof(uint32_t);
+    Timer * tmr = (Timer *) dynmem_alloc(tmrHdrSize + maxSched * sizeof(AlarmAssignment));
+    ASSERT_NULL(tmr);
+
+    tmr->maxSched = maxSched;
+    tmr->nSched = 0;
+    tmr->nextAlarm = NULL;
+    tmr->time.s = 0;
+    tmr->time.ns = 0;
+    memset(tmr->alarms, 0, maxSched * sizeof(AlarmAssignment));
+
+    return tmr;
+}
diff --git a/timer.h b/timer.h
new file mode 100644
index 0000000..e609b73
--- /dev/null
+++ b/timer.h
@@ -0,0 +1,50 @@
+#ifndef ETHERLIB_TEST_TIMER_H
+#define ETHERLIB_TEST_TIMER_H
+
+#include <stdint.h>
+
+/**
+ * A single point in time
+ */
+typedef struct {
+    uint32_t s; ///< Seconds
+    uint32_t ns; ///< Nanoseconds
+} TimePoint;
+
+
+struct Timer_;
+
+typedef union {
+    void * ptr;
+    uint32_t u;
+} AlarmUserData;
+
+typedef void (*TimerAlarmCb)(struct Timer_ * timer, AlarmUserData user);
+
+typedef struct {
+    TimePoint time; ///< Alarm time
+    TimerAlarmCb cb; ///< Pointer to callback function
+    AlarmUserData params; ///< User data passed to callback function
+} AlarmAssignment;
+
+/**
+ * Timer class
+ */
+typedef struct Timer_ {
+    TimePoint time; ///< Absolute time
+    AlarmAssignment * nextAlarm; ///< Nearest alarm
+    uint32_t maxSched; ///< Maximum number of scheduled alarms
+    uint32_t nSched; ///< Number of scheduled alarms
+    AlarmAssignment alarms[]; ///< Alarm assigment pool
+} Timer;
+
+/**
+ * Create new timer
+ * @param maxSched number of maximum alarms to be scheduled
+ * @return pointer to new instance OR NULL on error
+ */
+Timer * timer_new(uint32_t maxSched);
+
+
+
+#endif //ETHERLIB_TEST_TIMER_H