Added Function To Check the Serial Connection From CircuitPython Layer

ports/atmel-samd/Makefile

@@ -273,6 +273,8 @@ SRC_COMMON_HAL = \
 	neopixel_write/__init__.c \
 	os/__init__.c \
 	storage/__init__.c \
+        supervisor/__init__.c \
+	supervisor/Runtime.c \
 	time/__init__.c \
 	analogio/__init__.c \
 	analogio/AnalogIn.c \

ports/atmel-samd/common-hal/supervisor/Runtime.c

@@ -0,0 +1,34 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Michael Schroeder
+ *
+ * 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 <stdbool.h>
+#include "shared-bindings/supervisor/Runtime.h"
+#include "usb.h"
+
+bool common_hal_get_serial_connected(void) {
+    return (bool) usb_connected();
+}
+

ports/atmel-samd/common-hal/supervisor/Runtime.h

@@ -0,0 +1,37 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Michael Schroeder
+ *
+ * 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 MICROPY_INCLUDED_ATMEL_SAMD_COMMON_HAL_SUPERVISOR_RUNTIME_H
+#define MICROPY_INCLUDED_ATMEL_SAMD_COMMON_HAL_SUPERVISOR_RUNTIME_H
+
+#include "py/obj.h"
+
+typedef struct {
+    mp_obj_base_t base;
+    // Stores no state currently.
+} super_runtime_obj_t;
+
+#endif // MICROPY_INCLUDED_ATMEL_SAMD_COMMON_HAL_SUPERVISOR_RUNTIME_H

ports/atmel-samd/common-hal/supervisor/__init__.c

@@ -0,0 +1,40 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Michael Schroeder
+ *
+ * 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 "py/obj.h"
+
+#include "shared-bindings/supervisor/__init__.h"
+#include "shared-bindings/supervisor/Runtime.h"
+
+
+// The singleton supervisor.Runtime object, bound to supervisor.runtime
+// It currently only has properties, and no state.
+const super_runtime_obj_t common_hal_supervisor_runtime_obj = {
+    .base = {
+        .type = &supervisor_runtime_type,
+    },
+};

ports/atmel-samd/usb.c

@@ -232,7 +232,7 @@ static bool cdc_enabled(void) {
         cdcdf_acm_register_callback(CDCDF_ACM_CB_STATE_C, (FUNC_PTR)usb_device_cb_state_c);
         cdcdf_acm_register_callback(CDCDF_ACM_CB_LINE_CODING_C, (FUNC_PTR)usb_device_cb_line_coding_c);
         mp_cdc_enabled = true;
-    }    
+    }
 
     return true;
 }

ports/nrf/Makefile

@@ -208,6 +208,8 @@ SRC_COMMON_HAL += \
 	pulseio/PulseOut.c \
 	pulseio/PWMOut.c \
 	storage/__init__.c \
+        supervisor/__init__.c \
+        supervisor/Runtime.c \
 
 # These don't have corresponding files in each port but are still located in
 # shared-bindings to make it clear what the contents of the modules are.
@@ -219,7 +221,6 @@ SRC_BINDINGS_ENUMS = \
 	microcontroller/RunMode.c \
 	help.c \
 	math/__init__.c \
-	supervisor/__init__.c \
 	util.c
 
 SRC_COMMON_HAL_EXPANDED = $(addprefix shared-bindings/, $(SRC_COMMON_HAL)) \

ports/nrf/common-hal/supervisor/Runtime.c

@@ -0,0 +1,34 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Michael Schroeder
+ *
+ * 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 <stdbool.h>
+#include "shared-bindings/supervisor/Runtime.h"
+#include "supervisor/serial.h"
+
+bool common_hal_get_serial_connected(void) {
+    return (bool) serial_connected();
+}
+

ports/nrf/common-hal/supervisor/Runtime.h

@@ -0,0 +1,37 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Michael Schroeder
+ *
+ * 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 MICROPY_INCLUDED_NRF_COMMON_HAL_SUPERVISOR_RUNTIME_H
+#define MICROPY_INCLUDED_NRF_COMMON_HAL_SUPERVISOR_RUNTIME_H
+
+#include "py/obj.h"
+
+typedef struct {
+    mp_obj_base_t base;
+    // Stores no state currently.
+} super_runtime_obj_t;
+
+#endif // MICROPY_INCLUDED_NRF_COMMON_HAL_SUPERVISOR_RUNTIME_H

ports/nrf/common-hal/supervisor/__init__.c

@@ -0,0 +1,40 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Michael Schroeder
+ *
+ * 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 "py/obj.h"
+
+#include "shared-bindings/supervisor/__init__.h"
+#include "shared-bindings/supervisor/Runtime.h"
+
+
+// The singleton supervisor.Runtime object, bound to supervisor.runtime
+// It currently only has properties, and no state.
+const super_runtime_obj_t common_hal_supervisor_runtime_obj = {
+    .base = {
+        .type = &supervisor_runtime_type,
+    },
+};

shared-bindings/supervisor/Runtime.c

@@ -0,0 +1,93 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Michael Schroeder
+ *
+ * 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 <stdbool.h>
+#include "py/objproperty.h"
+#include "shared-bindings/supervisor/Runtime.h"
+
+//TODO: add USB, REPL to description once they're operational
+//| .. currentmodule:: supervisor
+//|
+//| :class:`Runtime` --- Supervisor Runtime information
+//| ----------------------------------------------------
+//|
+//| Get current status of runtime objects.
+//|
+//| Usage::
+//|
+//|    import supervisor
+//|    if supervisor.runtime.serial_connected:
+//|        print("Hello World!")
+//|
+
+//| .. class:: Runtime()
+//|
+//|     You cannot create an instance of `supervisor.Runtime`.
+//|     Use `supervisor.runtime` to access the sole instance available.
+//|
+
+//|     .. attribute:: runtime.serial_connected
+//|
+//|         Returns the USB serial communication status (read-only).
+//|
+//|     .. note::
+//|
+//|         SAMD: Will return ``True`` if the USB serial connection
+//|         has been established at any point.  Will not reset if
+//|         USB is disconnected but power remains (e.g. battery connected)
+//|
+//|         Feather52 (nRF52832): Currently returns ``True`` regardless
+//|         of USB connection status.
+//|
+
+STATIC mp_obj_t supervisor_get_serial_connected(mp_obj_t self){
+    if (!common_hal_get_serial_connected()) {
+        return mp_const_false;
+    }
+    else {
+        return mp_const_true;
+    }
+}
+MP_DEFINE_CONST_FUN_OBJ_1(supervisor_get_serial_connected_obj, supervisor_get_serial_connected);
+
+const mp_obj_property_t supervisor_serial_connected_obj = {
+    .base.type = &mp_type_property,
+    .proxy = {(mp_obj_t)&supervisor_get_serial_connected_obj,
+              (mp_obj_t)&mp_const_none_obj,
+              (mp_obj_t)&mp_const_none_obj},
+};
+
+STATIC const mp_rom_map_elem_t supervisor_runtime_locals_dict_table[] = {
+    { MP_ROM_QSTR(MP_QSTR_serial_connected), MP_ROM_PTR(&supervisor_serial_connected_obj) },
+};
+
+STATIC MP_DEFINE_CONST_DICT(supervisor_runtime_locals_dict, supervisor_runtime_locals_dict_table);
+
+const mp_obj_type_t supervisor_runtime_type = {
+    .base = { &mp_type_type },
+    .name = MP_QSTR_Runtime,
+    .locals_dict = (mp_obj_t)&supervisor_runtime_locals_dict,
+};