Nuvoton: Change WDT clock source to LXT

ccli8 · ccli8 · commit 3d1fd6ae0d93 · 2020-05-14T11:45:38.000+08:00
LIRC has 40%~50% error rate, so change WDT clock source to LXT from LIRC.

NOTE: NANO100 series just supports LIRC-clocked WDT.
diff --git a/targets/TARGET_NUVOTON/TARGET_M451/watchdog_api.c b/targets/TARGET_NUVOTON/TARGET_M451/watchdog_api.c
@@ -23,7 +23,7 @@
 
 /* Define WDT clock source in target configuration option */
 #ifndef MBED_CONF_TARGET_WDT_CLKSRC_SEL
-#define MBED_CONF_TARGET_WDT_CLKSRC_SEL     LIRC
+#define MBED_CONF_TARGET_WDT_CLKSRC_SEL     LXT
 #endif
 
 /* WDT clock source definition */
diff --git a/targets/TARGET_NUVOTON/TARGET_M480/watchdog_api.c b/targets/TARGET_NUVOTON/TARGET_M480/watchdog_api.c
@@ -22,7 +22,7 @@
 
 /* Define WDT clock source in target configuration option */
 #ifndef MBED_CONF_TARGET_WDT_CLKSRC_SEL
-#define MBED_CONF_TARGET_WDT_CLKSRC_SEL     LIRC
+#define MBED_CONF_TARGET_WDT_CLKSRC_SEL     LXT
 #endif
 
 /* WDT clock source definition */
diff --git a/targets/TARGET_NUVOTON/TARGET_NUC472/watchdog_api.c b/targets/TARGET_NUVOTON/TARGET_NUC472/watchdog_api.c
@@ -22,7 +22,7 @@
 
 /* Define WDT clock source in target configuration option */
 #ifndef MBED_CONF_TARGET_WDT_CLKSRC_SEL
-#define MBED_CONF_TARGET_WDT_CLKSRC_SEL     LIRC
+#define MBED_CONF_TARGET_WDT_CLKSRC_SEL     LXT
 #endif
 
 /* WDT clock source definition */
