Ajout FishPeper

OpenSky/arch/cc251x/hal_wdt.c

@@ -0,0 +1,50 @@
+/*
+    Copyright 2017 fishpepper <AT> gmail.com
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http:// www.gnu.org/licenses/>.
+
+   author: fishpepper <AT> gmail.com
+*/
+
+#include "hal_wdt.h"
+#include "debug.h"
+#include "led.h"
+#include "delay.h"
+#include "hal_cc25xx.h"
+
+void hal_wdt_init(void) {
+    // check if 32khz clock source is rcosc:
+    if (!(CLKCON & CLKCON_OSC32K)) {
+        debug("wdt: error! low speed clock not based on int rc");
+        led_green_on();
+        while (1) {
+            led_red_on();
+            delay_ms(200);
+            led_red_off();
+            delay_ms(200);
+        }
+    }
+
+    // set wdt interval to approx 1 second
+    WDCTL = (WDCTL & ~WDCTL_INT) | WDCTL_INT_1S;
+
+    // enable wdt. NOTE: this can not be disabled in software!
+    WDCTL = (WDCTL & ~WDCTL_MODE) | WDCTL_EN;
+}
+
+void hal_wdt_reset(void) {
+    // reset wdt (special sequence)
+    WDCTL = (WDCTL & 0x0F) | 0b10100000;
+    WDCTL = (WDCTL & 0x0F) | 0b01010000;
+}