1 files changed, 95 insertions, 0 deletions
diff --git a/circuitpython/shared-bindings/sharpdisplay/SharpMemoryFramebuffer.c b/circuitpython/shared-bindings/sharpdisplay/SharpMemoryFramebuffer.c
new file mode 100644
index 0000000..35e06b7
--- /dev/null
+++ b/circuitpython/shared-bindings/sharpdisplay/SharpMemoryFramebuffer.c
@@ -0,0 +1,95 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 Jeff Epler 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 "py/objarray.h"
+#include "py/runtime.h"
+
+#include "shared-bindings/busio/SPI.h"
+#include "shared-bindings/microcontroller/Pin.h"
+#include "shared-bindings/sharpdisplay/SharpMemoryFramebuffer.h"
+#include "shared-module/displayio/__init__.h"
+#include "shared-module/sharpdisplay/SharpMemoryFramebuffer.h"
+
+STATIC mp_obj_t sharpdisplay_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_spi_bus, ARG_chip_select, ARG_width, ARG_height, ARG_baudrate, NUM_ARGS };
+    static const mp_arg_t allowed_args[] = {
+        { MP_QSTR_spi_bus, MP_ARG_OBJ | MP_ARG_REQUIRED, {.u_obj = MP_OBJ_NULL} },
+        { MP_QSTR_chip_select, MP_ARG_OBJ | MP_ARG_REQUIRED, {.u_obj = MP_OBJ_NULL} },
+        { MP_QSTR_width, MP_ARG_INT | MP_ARG_REQUIRED, {.u_int = 0} },
+        { MP_QSTR_height, MP_ARG_INT | MP_ARG_REQUIRED, {.u_int = 0} },
+        { MP_QSTR_baudrate, MP_ARG_INT, {.u_int = 2000000} },
+    };
+    mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
+    MP_STATIC_ASSERT(MP_ARRAY_SIZE(allowed_args) == NUM_ARGS);
+
+    mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
+
+    const mcu_pin_obj_t *chip_select = validate_obj_is_free_pin(args[ARG_chip_select].u_obj);
+    busio_spi_obj_t *spi = validate_obj_is_spi_bus(args[ARG_spi_bus].u_obj);
+
+    sharpdisplay_framebuffer_obj_t *self = &allocate_display_bus_or_raise()->sharpdisplay;
+    self->base.type = &sharpdisplay_framebuffer_type;
+
+    common_hal_sharpdisplay_framebuffer_construct(self, spi, chip_select, args[ARG_baudrate].u_int, args[ARG_width].u_int, args[ARG_height].u_int);
+
+    return MP_OBJ_FROM_PTR(self);
+}
+
+
+STATIC mp_int_t sharpdisplay_framebuffer_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, mp_uint_t flags) {
+    sharpdisplay_framebuffer_obj_t *self = (sharpdisplay_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;
+    return 0;
+}
+
+STATIC mp_obj_t sharpdisplay_framebuffer_deinit(mp_obj_t self_in) {
+    sharpdisplay_framebuffer_obj_t *self = (sharpdisplay_framebuffer_obj_t *)self_in;
+    common_hal_sharpdisplay_framebuffer_deinit(self);
+
+    return mp_const_none;
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(sharpdisplay_framebuffer_deinit_obj, sharpdisplay_framebuffer_deinit);
+
+STATIC const mp_rom_map_elem_t sharpdisplay_framebuffer_locals_dict_table[] = {
+    { MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&sharpdisplay_framebuffer_deinit_obj) },
+};
+STATIC MP_DEFINE_CONST_DICT(sharpdisplay_framebuffer_locals_dict, sharpdisplay_framebuffer_locals_dict_table);
+
+const mp_obj_type_t sharpdisplay_framebuffer_type = {
+    { &mp_type_type },
+    .name = MP_QSTR_SharpMemoryFramebuffer,
+    .flags = MP_TYPE_FLAG_EXTENDED,
+    .make_new = sharpdisplay_framebuffer_make_new,
+    .locals_dict = (mp_obj_dict_t *)&sharpdisplay_framebuffer_locals_dict,
+    MP_TYPE_EXTENDED_FIELDS(
+        .buffer_p = { .get_buffer = sharpdisplay_framebuffer_get_buffer, },
+        .protocol = &sharpdisplay_framebuffer_proto,
+        ),
+};