From dbc3b8fb0cd052308cfa478e009048d3fe008fb8 Mon Sep 17 00:00:00 2001
From: Jeff Gough <j@jeffreygough.com>
Date: Thu, 22 Aug 2019 22:50:31 +0200
Subject: [PATCH] Add timer to appDb persistant storage to group write
operations together
---
epicardium/ble/app/common/app_db.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/epicardium/ble/app/common/app_db.c b/epicardium/ble/app/common/app_db.c
index 285570f7..46c30755 100644
--- a/epicardium/ble/app/common/app_db.c
+++ b/epicardium/ble/app/common/app_db.c
@@ -33,6 +33,11 @@
#include "app_cfg.h"
#include "epicardium.h"
+#include "modules/log.h"
+#include "FreeRTOS.h"
+#include "timers.h"
+#include "mxc_sys.h"
+#include "wdt.h"
#include <string.h>
#include <stdio.h>
@@ -90,6 +95,12 @@ static appDb_t appDb;
/*! When all records are allocated use this index to determine which to overwrite */
static appDbRec_t *pAppDbNewRec = appDb.rec;
+/* Timer to delay writing to persistent storage until a burst of store() calls has finished */
+static TimerHandle_t store_timer;
+static StaticTimer_t store_timer_buffer;
+static void store_callback();
+#define STORE_DELAY pdMS_TO_TICKS(1000)
+
/*************************************************************************************************/
/*!
* \brief Initialize the device database.
@@ -107,13 +118,32 @@ void AppDbInit(void)
}
epic_file_close(fd);
}
+
+ store_timer = xTimerCreateStatic(
+ "appdb_store_timer",
+ STORE_DELAY,
+ pdFALSE,
+ NULL,
+ store_callback,
+ &store_timer_buffer
+ );
}
static void store(void)
+{
+ LOG_DEBUG("appDb", "store() called, resetting timer");
+ if (xTimerReset(store_timer, 10) != pdPASS) { /* (Re)start the timer */
+ /* Store timer could not be reset, write to persistent storage anyway */
+ store_callback();
+ }
+}
+
+static void store_callback()
{
int fd = epic_file_open("pairings.bin", "w");
if(fd >= 0) {
if(epic_file_write(fd, &appDb, sizeof(appDb)) != sizeof(appDb)) {
+ LOG_DEBUG("appDb", "STORE_DELAY passed, writing to persistent storage");
}
epic_file_close(fd);
}
--
GitLab