esp8266: Add pyb.ADC class

1 files changed, 84 insertions, 0 deletions

diff --git a/esp8266/modpybadc.c b/esp8266/modpybadc.c
new file mode 100644
index 0000000000..b4dfa67283
--- /dev/null
+++ b/esp8266/modpybadc.c
@@ -0,0 +1,84 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015 Josef Gajdusek
+ *
+ * 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/obj.h"
+#include "py/runtime.h"
+#include MICROPY_HAL_H
+#include "user_interface.h"
+
+const mp_obj_type_t pyb_adc_type;
+
+typedef struct _pyb_adc_obj_t {
+    mp_obj_base_t base;
+    bool isvdd;
+} pyb_adc_obj_t;
+
+STATIC pyb_adc_obj_t pyb_adc_vdd3 = {{&pyb_adc_type}, true};
+STATIC pyb_adc_obj_t pyb_adc_adc = {{&pyb_adc_type}, false};
+
+STATIC mp_obj_t pyb_adc_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw,
+    const mp_obj_t *args) {
+    mp_arg_check_num(n_args, n_kw, 1, 1, false);
+
+    mp_int_t chn = mp_obj_get_int(args[0]);
+
+    switch (chn) {
+    case 0:
+        return &pyb_adc_adc;
+    case 1:
+        return &pyb_adc_vdd3;
+    default:
+        nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError,
+            "not a valid ADC Channel: %d", chn));
+    }
+}
+
+STATIC mp_obj_t pyb_adc_read(mp_obj_t self_in) {
+    pyb_adc_obj_t *adc = self_in;
+
+    if (adc->isvdd) {
+        return mp_obj_new_int(system_get_vdd33());
+    } else {
+        return mp_obj_new_int(system_adc_read());
+    }
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_adc_read_obj, pyb_adc_read);
+
+STATIC const mp_map_elem_t pyb_adc_locals_dict_table[] = {
+    { MP_OBJ_NEW_QSTR(MP_QSTR_read), (mp_obj_t)&pyb_adc_read_obj }
+};
+STATIC MP_DEFINE_CONST_DICT(pyb_adc_locals_dict, pyb_adc_locals_dict_table);
+
+const mp_obj_type_t pyb_adc_type = {
+    { &mp_type_type },
+    .name = MP_QSTR_ADC,
+    .make_new = pyb_adc_make_new,
+    .locals_dict = (mp_obj_t)&pyb_adc_locals_dict,
+};