add circuitpython code

1 files changed, 301 insertions, 0 deletions

diff --git a/circuitpython/shared-bindings/is31fl3741/FrameBuffer.c b/circuitpython/shared-bindings/is31fl3741/FrameBuffer.c
new file mode 100644
index 0000000..e1a87e8
--- /dev/null
+++ b/circuitpython/shared-bindings/is31fl3741/FrameBuffer.c
@@ -0,0 +1,301 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2021 Mark Komus
+ *
+ * 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 "py/objproperty.h"
+#include "py/runtime.h"
+#include "py/objarray.h"
+
+#include "shared-bindings/is31fl3741/IS31FL3741.h"
+#include "shared-bindings/is31fl3741/FrameBuffer.h"
+#include "shared-bindings/util.h"
+#include "shared-module/displayio/__init__.h"
+#include "shared-module/framebufferio/__init__.h"
+#include "shared-module/framebufferio/FramebufferDisplay.h"
+#include "shared-bindings/busio/I2C.h"
+
+//| class IS31FL3741_FrameBuffer:
+//|     """Creates an in-memory framebuffer for a IS31FL3741 device."""
+//|
+//|     def __init__(self, is31: is31fl3741.IS31FL3741, width: int, height: int, mapping: Tuple[int, ...], *,
+//|         framebuffer: Optional[WriteableBuffer] = None, scale: bool = False, gamma: bool = False) -> None:
+//|         """Create a IS31FL3741_FrameBuffer object with the given attributes.
+//|
+//|         The framebuffer is in "RGB888" format using 4 bytes per pixel.
+//|         Bits 24-31 are ignored. The format is in RGB order.
+//|
+//|         If a framebuffer is not passed in, one is allocated and initialized
+//|         to all black.  In any case, the framebuffer can be retrieved
+//|         by passing the Is31fl3741 object to memoryview().
+//|
+//|         A Is31fl3741 is often used in conjunction with a
+//|         `framebufferio.FramebufferDisplay`.
+//|
+//|         :param is31fl3741.IS31FL3741 is31: base IS31FL3741 instance to drive the framebuffer
+//|         :param int width: width of the display
+//|         :param int height: height of the display
+//|         :param Tuple[int, ...] mapping: mapping of matrix locations to LEDs
+//|         :param Optional[WriteableBuffer] framebuffer: Optional buffer to hold the display
+//|         :param bool scale: if True display is scaled down by 3 when displayed
+//|         :param bool gamma: if True apply gamma correction to all LEDs"""
+//|         ...
+//|
+STATIC mp_obj_t is31fl3741_FrameBuffer_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
+    enum { ARG_is31, ARG_width, ARG_height, ARG_mapping, ARG_framebuffer, ARG_scale, ARG_gamma };
+    static const mp_arg_t allowed_args[] = {
+        { MP_QSTR_is31, MP_ARG_OBJ | MP_ARG_REQUIRED },
+        { MP_QSTR_width, MP_ARG_INT | MP_ARG_REQUIRED },
+        { MP_QSTR_height, MP_ARG_INT | MP_ARG_REQUIRED },
+        { MP_QSTR_mapping, MP_ARG_OBJ | MP_ARG_REQUIRED },
+        { MP_QSTR_framebuffer, MP_ARG_OBJ | MP_ARG_KW_ONLY, { .u_obj = mp_const_none } },
+        { MP_QSTR_scale, MP_ARG_BOOL | MP_ARG_KW_ONLY, { .u_bool = false } },
+        { MP_QSTR_gamma, MP_ARG_BOOL | MP_ARG_KW_ONLY, { .u_bool = false } },
+    };
+    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);
+
+    is31fl3741_FrameBuffer_obj_t *self = &allocate_display_bus_or_raise()->is31fl3741;
+    self->base.type = &is31fl3741_FrameBuffer_type;
+
+    if (args[ARG_width].u_int <= 0) {
+        mp_raise_ValueError(translate("width must be greater than zero"));
+    }
+
+    self->scale = args[ARG_scale].u_bool;
+    if (self->scale) {
+        if (((args[ARG_height].u_int % 3) != 0) || ((args[ARG_width].u_int % 3) != 0)) {
+            mp_raise_ValueError(translate("Scale dimensions must divide by 3"));
+        }
+
+        self->scale_width = args[ARG_width].u_int / 3;
+        self->scale_height = args[ARG_height].u_int / 3;
+    } else {
+        self->scale_width = args[ARG_width].u_int;
+        self->scale_height = args[ARG_height].u_int;
+    }
+
+    self->auto_gamma = args[ARG_gamma].u_bool;
+
+    mp_obj_t framebuffer = args[ARG_framebuffer].u_obj;
+    if (framebuffer == mp_const_none) {
+        int width = args[ARG_width].u_int;
+        int height = args[ARG_height].u_int;
+        int bufsize = 4 * width * height;
+        framebuffer = mp_obj_new_bytearray_of_zeros(bufsize);
+    }
+
+    common_hal_is31fl3741_FrameBuffer_construct(self,
+        args[ARG_width].u_int,
+        args[ARG_height].u_int,
+        framebuffer,
+        args[ARG_is31].u_obj,
+        args[ARG_mapping].u_obj
+        );
+
+    return MP_OBJ_FROM_PTR(self);
+}
+
+//|     def deinit(self) -> None:
+//|         """Free the resources associated with this
+//|         IS31FL3741 instance.  After deinitialization, no further operations
+//|         may be performed."""
+//|         ...
+//|
+STATIC mp_obj_t is31fl3741_FrameBuffer_deinit(mp_obj_t self_in) {
+    is31fl3741_FrameBuffer_obj_t *self = (is31fl3741_FrameBuffer_obj_t *)self_in;
+    common_hal_is31fl3741_FrameBuffer_deinit(self);
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(is31fl3741_FrameBuffer_deinit_obj, is31fl3741_FrameBuffer_deinit);
+
+static void check_for_deinit(is31fl3741_FrameBuffer_obj_t *self) {
+    if (self->framebuffer == NULL) {
+        raise_deinited_error();
+    }
+}
+
+//|     brightness: float
+//|     """In the current implementation, 0.0 turns the display off entirely
+//|     and any other value up to 1.0 turns the display on fully."""
+//|
+STATIC mp_obj_t is31fl3741_FrameBuffer_get_brightness(mp_obj_t self_in) {
+    is31fl3741_FrameBuffer_obj_t *self = (is31fl3741_FrameBuffer_obj_t *)self_in;
+    check_for_deinit(self);
+    uint8_t current = common_hal_is31fl3741_get_current(self->is31fl3741);
+
+    float brightness = (float)current / (float)0xFF;
+    return mp_obj_new_float(brightness);
+}
+MP_DEFINE_CONST_FUN_OBJ_1(is31fl3741_FrameBuffer_get_brightness_obj, is31fl3741_FrameBuffer_get_brightness);
+
+STATIC mp_obj_t is31fl3741_FrameBuffer_set_brightness(mp_obj_t self_in, mp_obj_t value_in) {
+    is31fl3741_FrameBuffer_obj_t *self = (is31fl3741_FrameBuffer_obj_t *)self_in;
+    check_for_deinit(self);
+    mp_float_t brightness = mp_obj_get_float(value_in);
+    if (brightness < 0.0f || brightness > 1.0f) {
+        mp_raise_ValueError(translate("Brightness must be 0-1.0"));
+    }
+
+    uint8_t current = (uint8_t)(brightness * 0xFF);
+    common_hal_is31fl3741_set_current(self->is31fl3741, current);
+
+    return mp_const_none;
+}
+MP_DEFINE_CONST_FUN_OBJ_2(is31fl3741_FrameBuffer_set_brightness_obj, is31fl3741_FrameBuffer_set_brightness);
+
+MP_PROPERTY_GETSET(is31fl3741_FrameBuffer_brightness_obj,
+    (mp_obj_t)&is31fl3741_FrameBuffer_get_brightness_obj,
+    (mp_obj_t)&is31fl3741_FrameBuffer_set_brightness_obj);
+
+//|     def refresh(self) -> None:
+//|         """Transmits the color data in the buffer to the pixels so that
+//|         they are shown."""
+//|         ...
+//|
+STATIC mp_obj_t is31fl3741_FrameBuffer_refresh(mp_obj_t self_in) {
+    is31fl3741_FrameBuffer_obj_t *self = (is31fl3741_FrameBuffer_obj_t *)self_in;
+    check_for_deinit(self);
+    common_hal_is31fl3741_FrameBuffer_refresh(self, 0);
+    return mp_const_none;
+}
+MP_DEFINE_CONST_FUN_OBJ_1(is31fl3741_FrameBuffer_refresh_obj, is31fl3741_FrameBuffer_refresh);
+
+//|     width: int
+//|     """The width of the display, in pixels"""
+//|
+STATIC mp_obj_t is31fl3741_FrameBuffer_get_width(mp_obj_t self_in) {
+    is31fl3741_FrameBuffer_obj_t *self = (is31fl3741_FrameBuffer_obj_t *)self_in;
+    check_for_deinit(self);
+    return MP_OBJ_NEW_SMALL_INT(common_hal_is31fl3741_FrameBuffer_get_width(self));
+}
+MP_DEFINE_CONST_FUN_OBJ_1(is31fl3741_FrameBuffer_get_width_obj, is31fl3741_FrameBuffer_get_width);
+MP_PROPERTY_GETTER(is31fl3741_FrameBuffer_width_obj,
+    (mp_obj_t)&is31fl3741_FrameBuffer_get_width_obj);
+
+//|     height: int
+//|     """The height of the display, in pixels"""
+//|
+STATIC mp_obj_t is31fl3741_FrameBuffer_get_height(mp_obj_t self_in) {
+    is31fl3741_FrameBuffer_obj_t *self = (is31fl3741_FrameBuffer_obj_t *)self_in;
+    check_for_deinit(self);
+    return MP_OBJ_NEW_SMALL_INT(common_hal_is31fl3741_FrameBuffer_get_height(self));
+}
+MP_DEFINE_CONST_FUN_OBJ_1(is31fl3741_FrameBuffer_get_height_obj, is31fl3741_FrameBuffer_get_height);
+MP_PROPERTY_GETTER(is31fl3741_FrameBuffer_height_obj,
+    (mp_obj_t)&is31fl3741_FrameBuffer_get_height_obj);
+
+STATIC const mp_rom_map_elem_t is31fl3741_FrameBuffer_locals_dict_table[] = {
+    { MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&is31fl3741_FrameBuffer_deinit_obj) },
+    { MP_ROM_QSTR(MP_QSTR_brightness), MP_ROM_PTR(&is31fl3741_FrameBuffer_brightness_obj) },
+    { MP_ROM_QSTR(MP_QSTR_refresh), MP_ROM_PTR(&is31fl3741_FrameBuffer_refresh_obj) },
+    { MP_ROM_QSTR(MP_QSTR_width), MP_ROM_PTR(&is31fl3741_FrameBuffer_width_obj) },
+    { MP_ROM_QSTR(MP_QSTR_height), MP_ROM_PTR(&is31fl3741_FrameBuffer_height_obj) },
+};
+STATIC MP_DEFINE_CONST_DICT(is31fl3741_FrameBuffer_locals_dict, is31fl3741_FrameBuffer_locals_dict_table);
+
+STATIC void is31fl3741_FrameBuffer_get_bufinfo(mp_obj_t self_in, mp_buffer_info_t *bufinfo) {
+    is31fl3741_FrameBuffer_obj_t *self = (is31fl3741_FrameBuffer_obj_t *)self_in;
+    check_for_deinit(self);
+
+    *bufinfo = self->bufinfo;
+}
+
+STATIC void is31fl3741_FrameBuffer_swapbuffers(mp_obj_t self_in, uint8_t *dirty_row_bitmap) {
+    common_hal_is31fl3741_FrameBuffer_refresh(self_in, dirty_row_bitmap);
+}
+
+STATIC void is31fl3741_FrameBuffer_deinit_proto(mp_obj_t self_in) {
+    common_hal_is31fl3741_FrameBuffer_deinit(self_in);
+}
+
+STATIC float is31fl3741_FrameBuffer_get_brightness_proto(mp_obj_t self_in) {
+    return common_hal_is31fl3741_FrameBuffer_get_paused(self_in) ? 0.0f : 1.0f;
+}
+
+STATIC bool is31fl3741_FrameBuffer_set_brightness_proto(mp_obj_t self_in, mp_float_t value) {
+    common_hal_is31fl3741_FrameBuffer_set_paused(self_in, value <= 0);
+    return true;
+}
+
+STATIC int is31fl3741_FrameBuffer_get_width_proto(mp_obj_t self_in) {
+    return common_hal_is31fl3741_FrameBuffer_get_width(self_in);
+}
+
+STATIC int is31fl3741_FrameBuffer_get_height_proto(mp_obj_t self_in) {
+    return common_hal_is31fl3741_FrameBuffer_get_height(self_in);
+}
+
+STATIC int is31fl3741_FrameBuffer_get_color_depth_proto(mp_obj_t self_in) {
+    // The way displayio works depth is used to calculate bytes
+    // We use an uint32_t for color already so setting to 24 causes
+    // more changes required
+    return 32;
+}
+
+STATIC int is31fl3741_FrameBuffer_get_bytes_per_cell_proto(mp_obj_t self_in) {
+    return 1;
+}
+
+STATIC int is31fl3741_FrameBuffer_get_native_frames_per_second_proto(mp_obj_t self_in) {
+    return 60; // This was just chosen may vary based on LEDs used?
+}
+
+STATIC const framebuffer_p_t is31fl3741_FrameBuffer_proto = {
+    MP_PROTO_IMPLEMENT(MP_QSTR_protocol_framebuffer)
+    .get_bufinfo = is31fl3741_FrameBuffer_get_bufinfo,
+    .set_brightness = is31fl3741_FrameBuffer_set_brightness_proto,
+    .get_brightness = is31fl3741_FrameBuffer_get_brightness_proto,
+    .get_width = is31fl3741_FrameBuffer_get_width_proto,
+    .get_height = is31fl3741_FrameBuffer_get_height_proto,
+    .get_color_depth = is31fl3741_FrameBuffer_get_color_depth_proto,
+    .get_bytes_per_cell = is31fl3741_FrameBuffer_get_bytes_per_cell_proto,
+    .get_native_frames_per_second = is31fl3741_FrameBuffer_get_native_frames_per_second_proto,
+    .swapbuffers = is31fl3741_FrameBuffer_swapbuffers,
+    .deinit = is31fl3741_FrameBuffer_deinit_proto,
+};
+
+STATIC mp_int_t is31fl3741_FrameBuffer_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, mp_uint_t flags) {
+    is31fl3741_FrameBuffer_obj_t *self = (is31fl3741_FrameBuffer_obj_t *)self_in;
+    // a readonly framebuffer would be unusual but not impossible
+    if ((flags & MP_BUFFER_WRITE) && !(self->bufinfo.typecode & MP_OBJ_ARRAY_TYPECODE_FLAG_RW)) {
+        return 1;
+    }
+    *bufinfo = self->bufinfo;
+    bufinfo->typecode = 'H';
+    return 0;
+}
+
+const mp_obj_type_t is31fl3741_FrameBuffer_type = {
+    { &mp_type_type },
+    .flags = MP_TYPE_FLAG_EXTENDED,
+    .name = MP_QSTR_is31fl3741,
+    .locals_dict = (mp_obj_dict_t *)&is31fl3741_FrameBuffer_locals_dict,
+    .make_new = is31fl3741_FrameBuffer_make_new,
+    MP_TYPE_EXTENDED_FIELDS(
+        .buffer_p = { .get_buffer = is31fl3741_FrameBuffer_get_buffer, },
+        .protocol = &is31fl3741_FrameBuffer_proto,
+        ),
+};