nrf5/rtc: Adding skeleton for machine rtc module for nrf51/52.

nrf5/rtc.c

@@ -0,0 +1,117 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 Glenn Ruben Bakke
+ *
+ * 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.
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include "py/nlr.h"
+#include "py/runtime.h"
+#include "py/mphal.h"
+#include "rtc.h"
+#include "hal_rtc.h"
+
+#if MICROPY_PY_MACHINE_RTC
+
+typedef struct _machine_rtc_obj_t {
+    mp_obj_base_t base;
+    RTC_HandleTypeDef *rtc;
+} machine_rtc_obj_t;
+
+RTC_HandleTypeDef RTCHandle0 = {.instance = NULL, .id = 0};
+RTC_HandleTypeDef RTCHandle1 = {.instance = NULL, .id = 1};
+
+STATIC const machine_rtc_obj_t machine_rtc_obj[] = {
+    {{&machine_rtc_type}, &RTCHandle0},
+    {{&machine_rtc_type}, &RTCHandle1},
+};
+
+void rtc_init0(void) {
+    // reset the RTC handles
+    memset(&RTCHandle0, 0, sizeof(RTC_HandleTypeDef));
+    RTCHandle0.instance = RTC0;
+    memset(&RTCHandle1, 0, sizeof(RTC_HandleTypeDef));
+    RTCHandle0.instance = RTC1;
+}
+
+STATIC int rtc_find(mp_obj_t id) {
+    // given an integer id
+    int rtc_id = mp_obj_get_int(id);
+    if (rtc_id >= 0 && rtc_id <= MP_ARRAY_SIZE(machine_rtc_obj)
+        && machine_rtc_obj[rtc_id].rtc != NULL) {
+        return rtc_id;
+    }
+    nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError,
+        "RTC(%d) does not exist", rtc_id));
+}
+
+STATIC void rtc_print(const mp_print_t *print, mp_obj_t o, mp_print_kind_t kind) {
+    machine_rtc_obj_t *self = o;
+    mp_printf(print, "RTC(%u)", self->rtc->id);
+}
+
+/******************************************************************************/
+/* MicroPython bindings for machine API                                       */
+
+// for make_new
+enum {
+    ARG_NEW_id,
+};
+
+STATIC mp_obj_t machine_rtc_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
+    static const mp_arg_t allowed_args[] = {
+        { MP_QSTR_id,       MP_ARG_OBJ, {.u_obj = MP_OBJ_NEW_SMALL_INT(-1)} },
+    };
+
+    // parse args
+    mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
+    mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
+
+    if (args[ARG_NEW_id].u_obj == MP_OBJ_NEW_SMALL_INT(-1)) {
+        // index -1 does not exist
+        return mp_const_none;
+        // TODO: raise exception
+    }
+
+    // get static peripheral object
+    int rtc_id = rtc_find(args[ARG_NEW_id].u_obj);
+    const machine_rtc_obj_t *self = &machine_rtc_obj[rtc_id];
+
+    hal_rtc_init(self->rtc->instance, &self->rtc->init);
+
+    return MP_OBJ_FROM_PTR(self);
+}
+
+const mp_obj_type_t machine_rtc_type = {
+    { &mp_type_type },
+    .name = MP_QSTR_RTC,
+    .print = rtc_print,
+    .make_new = machine_rtc_make_new,
+#if 0
+    .locals_dict = (mp_obj_t)&machine_rtc_locals_dict
+#endif
+};
+
+#endif // MICROPY_PY_MACHINE_RTC

nrf5/rtc.h

@@ -0,0 +1,36 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 Glenn Ruben Bakke
+ *
+ * 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.
+ */
+
+#ifndef RTC_H__
+#define RTC_H__
+
+#include "hal_rtc.h"
+
+extern const mp_obj_type_t machine_rtc_type;
+
+void rtc_init0(void);
+
+#endif // RTC_H__