add circuitpython code

6 files changed, 527 insertions, 0 deletions

diff --git a/circuitpython/shared-bindings/memorymonitor/AllocationAlarm.c b/circuitpython/shared-bindings/memorymonitor/AllocationAlarm.c
new file mode 100644
index 0000000..b546452
--- /dev/null
+++ b/circuitpython/shared-bindings/memorymonitor/AllocationAlarm.c
@@ -0,0 +1,137 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 Scott Shawcroft for Adafruit Industries
+ *
+ * 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 <stdint.h>
+
+#include "py/objproperty.h"
+#include "py/runtime.h"
+#include "py/runtime0.h"
+#include "shared-bindings/memorymonitor/AllocationAlarm.h"
+#include "shared-bindings/util.h"
+#include "supervisor/shared/translate.h"
+
+//| class AllocationAlarm:
+//|
+//|     def __init__(self, *, minimum_block_count: int = 1) -> None:
+//|         """Throw an exception when an allocation of ``minimum_block_count`` or more blocks
+//|            occurs while active.
+//|
+//|         Track allocations::
+//|
+//|           import memorymonitor
+//|
+//|           aa = memorymonitor.AllocationAlarm(minimum_block_count=2)
+//|           x = 2
+//|           # Should not allocate any blocks.
+//|           with aa:
+//|               x = 5
+//|
+//|           # Should throw an exception when allocating storage for the 20 bytes.
+//|           with aa:
+//|               x = bytearray(20)
+//|
+//|         """
+//|         ...
+//|
+STATIC mp_obj_t memorymonitor_allocationalarm_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *all_args, mp_map_t *kw_args) {
+    enum { ARG_minimum_block_count };
+    static const mp_arg_t allowed_args[] = {
+        { MP_QSTR_minimum_block_count, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 1} },
+    };
+    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);
+    mp_int_t minimum_block_count = args[ARG_minimum_block_count].u_int;
+    if (minimum_block_count < 1) {
+        mp_raise_ValueError_varg(translate("%q must be >= 1"), MP_QSTR_minimum_block_count);
+    }
+
+    memorymonitor_allocationalarm_obj_t *self = m_new_obj(memorymonitor_allocationalarm_obj_t);
+    self->base.type = &memorymonitor_allocationalarm_type;
+
+    common_hal_memorymonitor_allocationalarm_construct(self, minimum_block_count);
+
+    return MP_OBJ_FROM_PTR(self);
+}
+
+//|     def ignore(self, count: int) -> AllocationAlarm:
+//|         """Sets the number of applicable allocations to ignore before raising the exception.
+//|            Automatically set back to zero at context exit.
+//|
+//|            Use it within a ``with`` block::
+//|
+//|              # Will not alarm because the bytearray allocation will be ignored.
+//|              with aa.ignore(2):
+//|                  x = bytearray(20)
+//|            """
+//|         ...
+//|
+STATIC mp_obj_t memorymonitor_allocationalarm_obj_ignore(mp_obj_t self_in, mp_obj_t count_obj) {
+    mp_int_t count = mp_obj_get_int(count_obj);
+    if (count < 0) {
+        mp_raise_ValueError_varg(translate("%q must be >= 0"), MP_QSTR_count);
+    }
+    common_hal_memorymonitor_allocationalarm_set_ignore(self_in, count);
+    return self_in;
+}
+MP_DEFINE_CONST_FUN_OBJ_2(memorymonitor_allocationalarm_ignore_obj, memorymonitor_allocationalarm_obj_ignore);
+
+//|     def __enter__(self) -> AllocationAlarm:
+//|         """Enables the alarm."""
+//|         ...
+//|
+STATIC mp_obj_t memorymonitor_allocationalarm_obj___enter__(mp_obj_t self_in) {
+    common_hal_memorymonitor_allocationalarm_resume(self_in);
+    return self_in;
+}
+MP_DEFINE_CONST_FUN_OBJ_1(memorymonitor_allocationalarm___enter___obj, memorymonitor_allocationalarm_obj___enter__);
+
+//|     def __exit__(self) -> None:
+//|         """Automatically disables the allocation alarm when exiting a context. See
+//|         :ref:`lifetime-and-contextmanagers` for more info."""
+//|         ...
+//|
+STATIC mp_obj_t memorymonitor_allocationalarm_obj___exit__(size_t n_args, const mp_obj_t *args) {
+    (void)n_args;
+    common_hal_memorymonitor_allocationalarm_set_ignore(args[0], 0);
+    common_hal_memorymonitor_allocationalarm_pause(args[0]);
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(memorymonitor_allocationalarm___exit___obj, 4, 4, memorymonitor_allocationalarm_obj___exit__);
+
+STATIC const mp_rom_map_elem_t memorymonitor_allocationalarm_locals_dict_table[] = {
+    // Methods
+    { MP_ROM_QSTR(MP_QSTR_ignore), MP_ROM_PTR(&memorymonitor_allocationalarm_ignore_obj) },
+    { MP_ROM_QSTR(MP_QSTR___enter__), MP_ROM_PTR(&memorymonitor_allocationalarm___enter___obj) },
+    { MP_ROM_QSTR(MP_QSTR___exit__), MP_ROM_PTR(&memorymonitor_allocationalarm___exit___obj) },
+};
+STATIC MP_DEFINE_CONST_DICT(memorymonitor_allocationalarm_locals_dict, memorymonitor_allocationalarm_locals_dict_table);
+
+const mp_obj_type_t memorymonitor_allocationalarm_type = {
+    { &mp_type_type },
+    .name = MP_QSTR_AllocationAlarm,
+    .make_new = memorymonitor_allocationalarm_make_new,
+    .locals_dict = (mp_obj_dict_t *)&memorymonitor_allocationalarm_locals_dict,
+};
diff --git a/circuitpython/shared-bindings/memorymonitor/AllocationAlarm.h b/circuitpython/shared-bindings/memorymonitor/AllocationAlarm.h
new file mode 100644
index 0000000..0a62971
--- /dev/null
+++ b/circuitpython/shared-bindings/memorymonitor/AllocationAlarm.h
@@ -0,0 +1,39 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 Scott Shawcroft for Adafruit Industries
+ *
+ * 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_SHARED_BINDINGS_MEMORYMONITOR_ALLOCATIONALARM_H
+#define MICROPY_INCLUDED_SHARED_BINDINGS_MEMORYMONITOR_ALLOCATIONALARM_H
+
+#include "shared-module/memorymonitor/AllocationAlarm.h"
+
+extern const mp_obj_type_t memorymonitor_allocationalarm_type;
+
+void common_hal_memorymonitor_allocationalarm_construct(memorymonitor_allocationalarm_obj_t *self, size_t minimum_block_count);
+void common_hal_memorymonitor_allocationalarm_pause(memorymonitor_allocationalarm_obj_t *self);
+void common_hal_memorymonitor_allocationalarm_resume(memorymonitor_allocationalarm_obj_t *self);
+void common_hal_memorymonitor_allocationalarm_set_ignore(memorymonitor_allocationalarm_obj_t *self, mp_int_t count);
+
+#endif // MICROPY_INCLUDED_SHARED_BINDINGS_MEMORYMONITOR_ALLOCATIONALARM_H
diff --git a/circuitpython/shared-bindings/memorymonitor/AllocationSize.c b/circuitpython/shared-bindings/memorymonitor/AllocationSize.c
new file mode 100644
index 0000000..1c39fdc
--- /dev/null
+++ b/circuitpython/shared-bindings/memorymonitor/AllocationSize.c
@@ -0,0 +1,182 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 Scott Shawcroft for Adafruit Industries
+ *
+ * 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 <stdint.h>
+
+#include "py/objproperty.h"
+#include "py/runtime.h"
+#include "py/runtime0.h"
+#include "shared-bindings/memorymonitor/AllocationSize.h"
+#include "shared-bindings/util.h"
+#include "supervisor/shared/translate.h"
+
+//| class AllocationSize:
+//|
+//|     def __init__(self) -> None:
+//|         """Tracks the number of allocations in power of two buckets.
+//|
+//|         It will have 16 16-bit buckets to track allocation counts. It is total allocations
+//|         meaning frees are ignored. Reallocated memory is counted twice, at allocation and when
+//|         reallocated with the larger size.
+//|
+//|         The buckets are measured in terms of blocks which is the finest granularity of the heap.
+//|         This means bucket 0 will count all allocations less than or equal to the number of bytes
+//|         per block, typically 16. Bucket 2 will be less than or equal to 4 blocks. See
+//|         `bytes_per_block` to convert blocks to bytes.
+//|
+//|         Multiple AllocationSizes can be used to track different code boundaries.
+//|
+//|         Track allocations::
+//|
+//|           import memorymonitor
+//|
+//|           mm = memorymonitor.AllocationSize()
+//|           with mm:
+//|             print("hello world" * 3)
+//|
+//|           for bucket, count in enumerate(mm):
+//|               print("<", 2 ** bucket, count)
+//|
+//|         """
+//|         ...
+//|
+STATIC mp_obj_t memorymonitor_allocationsize_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *all_args, mp_map_t *kw_args) {
+    memorymonitor_allocationsize_obj_t *self = m_new_obj(memorymonitor_allocationsize_obj_t);
+    self->base.type = &memorymonitor_allocationsize_type;
+
+    common_hal_memorymonitor_allocationsize_construct(self);
+
+    return MP_OBJ_FROM_PTR(self);
+}
+
+//|     def __enter__(self) -> AllocationSize:
+//|         """Clears counts and resumes tracking."""
+//|         ...
+//|
+STATIC mp_obj_t memorymonitor_allocationsize_obj___enter__(mp_obj_t self_in) {
+    common_hal_memorymonitor_allocationsize_clear(self_in);
+    common_hal_memorymonitor_allocationsize_resume(self_in);
+    return self_in;
+}
+MP_DEFINE_CONST_FUN_OBJ_1(memorymonitor_allocationsize___enter___obj, memorymonitor_allocationsize_obj___enter__);
+
+//|     def __exit__(self) -> None:
+//|         """Automatically pauses allocation tracking when exiting a context. See
+//|         :ref:`lifetime-and-contextmanagers` for more info."""
+//|         ...
+//|
+STATIC mp_obj_t memorymonitor_allocationsize_obj___exit__(size_t n_args, const mp_obj_t *args) {
+    (void)n_args;
+    common_hal_memorymonitor_allocationsize_pause(args[0]);
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(memorymonitor_allocationsize___exit___obj, 4, 4, memorymonitor_allocationsize_obj___exit__);
+
+//|     bytes_per_block: int
+//|     """Number of bytes per block"""
+//|
+STATIC mp_obj_t memorymonitor_allocationsize_obj_get_bytes_per_block(mp_obj_t self_in) {
+    memorymonitor_allocationsize_obj_t *self = MP_OBJ_TO_PTR(self_in);
+
+    return MP_OBJ_NEW_SMALL_INT(common_hal_memorymonitor_allocationsize_get_bytes_per_block(self));
+}
+MP_DEFINE_CONST_FUN_OBJ_1(memorymonitor_allocationsize_get_bytes_per_block_obj, memorymonitor_allocationsize_obj_get_bytes_per_block);
+
+MP_PROPERTY_GETTER(memorymonitor_allocationsize_bytes_per_block_obj,
+    (mp_obj_t)&memorymonitor_allocationsize_get_bytes_per_block_obj);
+
+//|     def __len__(self) -> int:
+//|         """Returns the number of allocation buckets.
+//|
+//|         This allows you to::
+//|
+//|           mm = memorymonitor.AllocationSize()
+//|           print(len(mm))"""
+//|         ...
+//|
+STATIC mp_obj_t memorymonitor_allocationsize_unary_op(mp_unary_op_t op, mp_obj_t self_in) {
+    memorymonitor_allocationsize_obj_t *self = MP_OBJ_TO_PTR(self_in);
+    uint16_t len = common_hal_memorymonitor_allocationsize_get_len(self);
+    switch (op) {
+        case MP_UNARY_OP_BOOL:
+            return mp_obj_new_bool(len != 0);
+        case MP_UNARY_OP_LEN:
+            return MP_OBJ_NEW_SMALL_INT(len);
+        default:
+            return MP_OBJ_NULL;      // op not supported
+    }
+}
+
+//|     def __getitem__(self, index: int) -> Optional[int]:
+//|         """Returns the allocation count for the given bucket.
+//|
+//|         This allows you to::
+//|
+//|           mm = memorymonitor.AllocationSize()
+//|           print(mm[0])"""
+//|         ...
+//|
+STATIC mp_obj_t memorymonitor_allocationsize_subscr(mp_obj_t self_in, mp_obj_t index_obj, mp_obj_t value) {
+    if (value == mp_const_none) {
+        // delete item
+        mp_raise_AttributeError(translate("Cannot delete values"));
+    } else {
+        memorymonitor_allocationsize_obj_t *self = MP_OBJ_TO_PTR(self_in);
+
+        if (mp_obj_is_type(index_obj, &mp_type_slice)) {
+            mp_raise_NotImplementedError(translate("Slices not supported"));
+        } else {
+            size_t index = mp_get_index(&memorymonitor_allocationsize_type, common_hal_memorymonitor_allocationsize_get_len(self), index_obj, false);
+            if (value == MP_OBJ_SENTINEL) {
+                // load
+                return MP_OBJ_NEW_SMALL_INT(common_hal_memorymonitor_allocationsize_get_item(self, index));
+            } else {
+                mp_raise_AttributeError(translate("Read-only"));
+            }
+        }
+    }
+    return mp_const_none;
+}
+
+STATIC const mp_rom_map_elem_t memorymonitor_allocationsize_locals_dict_table[] = {
+    // Methods
+    { MP_ROM_QSTR(MP_QSTR___enter__), MP_ROM_PTR(&memorymonitor_allocationsize___enter___obj) },
+    { MP_ROM_QSTR(MP_QSTR___exit__), MP_ROM_PTR(&memorymonitor_allocationsize___exit___obj) },
+
+    // Properties
+    { MP_ROM_QSTR(MP_QSTR_bytes_per_block), MP_ROM_PTR(&memorymonitor_allocationsize_bytes_per_block_obj) },
+};
+STATIC MP_DEFINE_CONST_DICT(memorymonitor_allocationsize_locals_dict, memorymonitor_allocationsize_locals_dict_table);
+
+const mp_obj_type_t memorymonitor_allocationsize_type = {
+    { &mp_type_type },
+    .name = MP_QSTR_AllocationSize,
+    .make_new = memorymonitor_allocationsize_make_new,
+    .subscr = memorymonitor_allocationsize_subscr,
+    .unary_op = memorymonitor_allocationsize_unary_op,
+    .getiter = mp_obj_new_generic_iterator,
+    .locals_dict = (mp_obj_dict_t *)&memorymonitor_allocationsize_locals_dict,
+};
diff --git a/circuitpython/shared-bindings/memorymonitor/AllocationSize.h b/circuitpython/shared-bindings/memorymonitor/AllocationSize.h
new file mode 100644
index 0000000..c677c1a
--- /dev/null
+++ b/circuitpython/shared-bindings/memorymonitor/AllocationSize.h
@@ -0,0 +1,42 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 Scott Shawcroft for Adafruit Industries
+ *
+ * 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_SHARED_BINDINGS_MEMORYMONITOR_ALLOCATIONSIZE_H
+#define MICROPY_INCLUDED_SHARED_BINDINGS_MEMORYMONITOR_ALLOCATIONSIZE_H
+
+#include "shared-module/memorymonitor/AllocationSize.h"
+
+extern const mp_obj_type_t memorymonitor_allocationsize_type;
+
+extern void common_hal_memorymonitor_allocationsize_construct(memorymonitor_allocationsize_obj_t *self);
+extern void common_hal_memorymonitor_allocationsize_pause(memorymonitor_allocationsize_obj_t *self);
+extern void common_hal_memorymonitor_allocationsize_resume(memorymonitor_allocationsize_obj_t *self);
+extern void common_hal_memorymonitor_allocationsize_clear(memorymonitor_allocationsize_obj_t *self);
+extern size_t common_hal_memorymonitor_allocationsize_get_bytes_per_block(memorymonitor_allocationsize_obj_t *self);
+extern uint16_t common_hal_memorymonitor_allocationsize_get_len(memorymonitor_allocationsize_obj_t *self);
+extern uint16_t common_hal_memorymonitor_allocationsize_get_item(memorymonitor_allocationsize_obj_t *self, int16_t index);
+
+#endif // MICROPY_INCLUDED_SHARED_BINDINGS_MEMORYMONITOR_ALLOCATIONSIZE_H
diff --git a/circuitpython/shared-bindings/memorymonitor/__init__.c b/circuitpython/shared-bindings/memorymonitor/__init__.c
new file mode 100644
index 0000000..64a3a6a
--- /dev/null
+++ b/circuitpython/shared-bindings/memorymonitor/__init__.c
@@ -0,0 +1,78 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 Scott Shawcroft
+ *
+ * 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 <stdint.h>
+
+#include "py/obj.h"
+#include "py/runtime.h"
+
+#include "shared-bindings/memorymonitor/__init__.h"
+#include "shared-bindings/memorymonitor/AllocationAlarm.h"
+#include "shared-bindings/memorymonitor/AllocationSize.h"
+
+//| """Memory monitoring helpers"""
+//|
+
+//| class AllocationError(Exception):
+//|     """Catchall exception for allocation related errors."""
+//|     ...
+MP_DEFINE_MEMORYMONITOR_EXCEPTION(AllocationError, Exception)
+
+NORETURN void mp_raise_memorymonitor_AllocationError(const compressed_string_t *fmt, ...) {
+    va_list argptr;
+    va_start(argptr,fmt);
+    mp_obj_t exception = mp_obj_new_exception_msg_vlist(&mp_type_memorymonitor_AllocationError, fmt, argptr);
+    va_end(argptr);
+    nlr_raise(exception);
+}
+
+STATIC const mp_rom_map_elem_t memorymonitor_module_globals_table[] = {
+    { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_memorymonitor) },
+    { MP_ROM_QSTR(MP_QSTR_AllocationAlarm), MP_ROM_PTR(&memorymonitor_allocationalarm_type) },
+    { MP_ROM_QSTR(MP_QSTR_AllocationSize), MP_ROM_PTR(&memorymonitor_allocationsize_type) },
+
+    // Errors
+    { MP_ROM_QSTR(MP_QSTR_AllocationError),      MP_ROM_PTR(&mp_type_memorymonitor_AllocationError) },
+};
+
+STATIC MP_DEFINE_CONST_DICT(memorymonitor_module_globals, memorymonitor_module_globals_table);
+
+void memorymonitor_exception_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t kind) {
+    mp_print_kind_t k = kind & ~PRINT_EXC_SUBCLASS;
+    bool is_subclass = kind & PRINT_EXC_SUBCLASS;
+    if (!is_subclass && (k == PRINT_EXC)) {
+        mp_print_str(print, qstr_str(MP_OBJ_QSTR_VALUE(memorymonitor_module_globals_table[0].value)));
+        mp_print_str(print, ".");
+    }
+    mp_obj_exception_print(print, o_in, kind);
+}
+
+const mp_obj_module_t memorymonitor_module = {
+    .base = { &mp_type_module },
+    .globals = (mp_obj_dict_t *)&memorymonitor_module_globals,
+};
+
+MP_REGISTER_MODULE(MP_QSTR_memorymonitor, memorymonitor_module, CIRCUITPY_MEMORYMONITOR);
diff --git a/circuitpython/shared-bindings/memorymonitor/__init__.h b/circuitpython/shared-bindings/memorymonitor/__init__.h
new file mode 100644
index 0000000..5d9dfdd
--- /dev/null
+++ b/circuitpython/shared-bindings/memorymonitor/__init__.h
@@ -0,0 +1,49 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 Scott Shawcroft
+ *
+ * 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_SHARED_BINDINGS_MEMORYMONITOR___INIT___H
+#define MICROPY_INCLUDED_SHARED_BINDINGS_MEMORYMONITOR___INIT___H
+
+#include "py/obj.h"
+
+
+void memorymonitor_exception_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t kind);
+
+#define MP_DEFINE_MEMORYMONITOR_EXCEPTION(exc_name, base_name) \
+    const mp_obj_type_t mp_type_memorymonitor_##exc_name = { \
+        { &mp_type_type }, \
+        .name = MP_QSTR_##exc_name, \
+        .print = memorymonitor_exception_print, \
+        .make_new = mp_obj_exception_make_new, \
+        .attr = mp_obj_exception_attr, \
+        .parent = &mp_type_##base_name, \
+    };
+
+extern const mp_obj_type_t mp_type_memorymonitor_AllocationError;
+
+NORETURN void mp_raise_memorymonitor_AllocationError(const compressed_string_t *msg, ...);
+
+#endif  // MICROPY_INCLUDED_SHARED_BINDINGS_MEMORYMONITOR___INIT___H