ports/psoc6: Implementation of machine WDT APIs.

Signed-off-by: Ramya Subramanyam <ramya.subramanyam@infineon.com>

ports/psoc6/Makefile

@@ -152,6 +152,7 @@ MOD_SRC_C += \
  machine_pin_phy.c \
  machine_pin.c \
  machine_rtc.c \
+ machine_wdt.c \
  machine_spi.c \
  machine_timer.c \
  machine_adc.c \

ports/psoc6/machine_wdt.c

@@ -0,0 +1,93 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2021 "Krzysztof Adamski" <k@japko.eu>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+// std includes
+#include <stdio.h>
+#include <string.h>
+#include <sys/time.h>
+#include <time.h>
+
+
+// micropython includes
+#include "py/nlr.h"
+#include "py/obj.h"
+#include "py/runtime.h"
+#include "py/mphal.h"
+#include "py/mperrno.h"
+#include "shared/timeutils/timeutils.h"
+#include "py/misc.h"
+
+
+// MTB includes
+#include "cyhal.h"
+
+
+// port-specific includes
+#include "modmachine.h"
+
+cyhal_wdt_t psoc6_wdt;
+
+
+typedef struct _machine_wdt_obj_t {
+ mp_obj_base_t base;
+} machine_wdt_obj_t;
+
+
+// singleton WDT object
+static const machine_wdt_obj_t machine_wdt = {{&machine_wdt_type}};
+
+/* This function is run from main.c to init the WDT at boot time. This will set the timeout of the WDT to 2ms */
+void wdt_init(void) {
+ uint32_t timeout_ms = 2000;
+ cy_rslt_t result = cyhal_wdt_init(&psoc6_wdt, timeout_ms);
+
+ if (CY_RSLT_SUCCESS != result) {
+ mp_raise_ValueError(MP_ERROR_TEXT("cyhal_wdt_init failed !"));
+ }
+}
+
+static machine_wdt_obj_t *mp_machine_wdt_make_new_instance(mp_int_t id, mp_int_t timeout_ms) {
+ if (id != 0) {
+ mp_raise_msg_varg(&mp_type_ValueError, MP_ERROR_TEXT("WDT(%d) doesn't exist"), id);
+ }
+
+ if (timeout_ms <= 0) {
+ mp_raise_ValueError(MP_ERROR_TEXT("WDT timeout too low"));
+ } else if (timeout_ms > cyhal_wdt_get_max_timeout_ms()) {
+ mp_raise_ValueError(MP_ERROR_TEXT("WDT timeout too high"));
+ }
+
+ cy_rslt_t result = cyhal_wdt_init(&psoc6_wdt, timeout_ms);
+ if (CY_RSLT_SUCCESS != result) {
+ mp_raise_ValueError(MP_ERROR_TEXT("cyhal_wdt_init failed !"));
+ }
+
+ return (machine_wdt_obj_t *)&machine_wdt;
+}
+
+static void mp_machine_wdt_feed(machine_wdt_obj_t *self) {
+ cyhal_wdt_kick(&self);
+}