From 3c11bc1916410f8325135265b1c2e8e3c21436b8 Mon Sep 17 00:00:00 2001
From: bernie <bernie@38d2e660-2303-0410-9eaa-f027e97ec537>
Date: Tue, 16 Nov 2004 21:02:07 +0000
Subject: [PATCH] Make driver optional; mark AVR specific parts as such.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@273 38d2e660-2303-0410-9eaa-f027e97ec537
---
 drv/wdt.h | 73 ++++++++++++++++++++++++++++++++++++++-----------------
 1 file changed, 51 insertions(+), 22 deletions(-)

diff --git a/drv/wdt.h b/drv/wdt.h
index 617cc0b9..3f356cbb 100755
--- a/drv/wdt.h
+++ b/drv/wdt.h
@@ -14,6 +14,9 @@
 
 /*#*
  *#* $Log$
+ *#* Revision 1.2  2004/11/16 21:02:07  bernie
+ *#* Make driver optional; mark AVR specific parts as such.
+ *#*
  *#* Revision 1.1  2004/10/26 08:34:47  bernie
  *#* New DevLib module.
  *#*
@@ -21,17 +24,37 @@
 #ifndef DRV_WDT_H
 #define DRV_WDT_H
 
-#include <avr/io.h>
-#include <compiler.h>
-#include <cpu.h>
-#include <macros.h> // BV()
+#include <config.h>
+#include <compiler.h> // INLINE
+
+/* Configury sanity check */
+#if !defined(CONFIG_WATCHDOG) || (CONFIG_WATCHDOG != 0 && CONFIG_WATCHDOG != 1)
+	#error CONFIG_WATCHDOG must be defined to either 0 or 1
+#endif
+
+#if CONFIG_WATCHDOG
+	#include <cpu.h>
+
+	#if CPU_AVR
+		#include <avr/io.h>
+		#include <macros.h> // BV()
+	#else
+		#error unknown CPU
+	#endif
+#endif /* CONFIG_WATCHDOG */
 
 /*!
  * Reset the watchdog timer.
  */
 INLINE void wdt_reset(void)
 {
-	__asm__ __volatile__ ("wdr");
+#if CONFIG_WATCHDOG
+	#if CPU_AVR
+		__asm__ __volatile__ ("wdr");
+	#else
+		#error unknown CPU
+	#endif
+#endif /* CONFIG_WATCHDOG */
 }
 
 /*!
@@ -41,31 +64,37 @@ INLINE void wdt_reset(void)
  */
 INLINE void wdt_init(uint8_t timeout)
 {
-#if CPU_AVR
-	WDTCR |= BV(WDCE) | BV(WDE);
-	WDTCR = timeout;
-#else
-	#error unknown CPU
-#endif
+#if CONFIG_WATCHDOG
+	#if CPU_AVR
+		WDTCR |= BV(WDCE) | BV(WDE);
+		WDTCR = timeout;
+	#else
+		#error unknown CPU
+	#endif
+#endif /* CONFIG_WATCHDOG */
 }
 
 INLINE void wdt_start(void)
 {
-#if CPU_AVR
-	WDTCR |= BV(WDE);
-#else
-	#error unknown CPU
-#endif
+#if CONFIG_WATCHDOG
+	#if CPU_AVR
+		WDTCR |= BV(WDE);
+	#else
+		#error unknown CPU
+	#endif
+#endif /* CONFIG_WATCHDOG */
 }
 
 INLINE void wdt_stop(void)
 {
-#if CPU_AVR
-	WDTCR |= BV(WDCE) | BV(WDE);
-	WDTCR &= ~BV(WDE);
-#else
-	#error unknown CPU
-#endif
+#if CONFIG_WATCHDOG
+	#if CPU_AVR
+		WDTCR |= BV(WDCE) | BV(WDE);
+		WDTCR &= ~BV(WDE);
+	#else
+		#error unknown CPU
+	#endif
+#endif /* CONFIG_WATCHDOG */
 }
 
 #endif /* DRV_WDT_H */
-- 
2.25.1