310 lines
11 KiB
C
310 lines
11 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2020 Jeff Epler for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <string.h>
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#include "py/gc.h"
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#include "py/obj.h"
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#include "py/objarray.h"
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#include "py/objproperty.h"
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#include "py/runtime.h"
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#include "shared-module/is31fl3741/allocator.h"
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#include "shared-bindings/is31fl3741/is31fl3741.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "shared-bindings/microcontroller/__init__.h"
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#include "shared-bindings/util.h"
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#include "shared-module/framebufferio/FramebufferDisplay.h"
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#include "shared-bindings/busio/I2C.h"
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void common_hal_is31fl3741_is31fl3741_construct(is31fl3741_is31fl3741_obj_t *self, int width, int height, mp_obj_t framebuffer, busio_i2c_obj_t *i2c, uint8_t addr) {
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self->width = width;
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self->height = height;
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self->bufsize = sizeof(uint32_t) * width * height;
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// Probe the bus to see if a device acknowledges the given address.
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if (!common_hal_busio_i2c_probe(i2c, addr)) {
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self->base.type = &mp_type_NoneType;
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mp_raise_ValueError_varg(translate("Unable to find I2C Display at %x"), addr);
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}
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self->i2c = i2c;
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self->device_address = addr;
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common_hal_is31fl3741_is31fl3741_reconstruct(self, framebuffer);
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}
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void common_hal_is31fl3741_is31fl3741_reconstruct(is31fl3741_is31fl3741_obj_t *self, mp_obj_t framebuffer) {
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self->paused = 1;
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if (framebuffer) {
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self->framebuffer = framebuffer;
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mp_get_buffer_raise(self->framebuffer, &self->bufinfo, MP_BUFFER_READ);
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if (mp_get_buffer(self->framebuffer, &self->bufinfo, MP_BUFFER_RW)) {
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self->bufinfo.typecode = 'H' | MP_OBJ_ARRAY_TYPECODE_FLAG_RW;
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} else {
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self->bufinfo.typecode = 'H';
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}
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// verify that the matrix is big enough
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mp_get_index(mp_obj_get_type(self->framebuffer), self->bufinfo.len, MP_OBJ_NEW_SMALL_INT(self->bufsize - 1), false);
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} else {
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common_hal_is31fl3741_free_impl(self->bufinfo.buf);
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self->framebuffer = NULL;
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self->bufinfo.buf = common_hal_is31fl3741_allocator_impl(self->bufsize);
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self->bufinfo.len = self->bufsize;
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self->bufinfo.typecode = 'H' | MP_OBJ_ARRAY_TYPECODE_FLAG_RW;
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}
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common_hal_displayio_is31fl3741_begin_transaction(self);
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uint8_t command = 0xFC;
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common_hal_busio_i2c_write(self->i2c, self->device_address, &command, 1, false);
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uint8_t data = 0;
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common_hal_busio_i2c_read(self->i2c, self->device_address, &data, 1);
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is31fl3741_send_reset(self->i2c, self->device_address);
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is31fl3741_send_enable(self->i2c, self->device_address);
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is31fl3741_set_current(self->i2c, self->device_address, 0x08);
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// set scale to max for all
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for (int i; i < 351; i++) {
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is31fl3741_set_led(self->i2c, self->device_address, i, 0xFF, 2);
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}
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common_hal_displayio_is31fl3741_end_transaction(self);
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self->paused = 0;
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}
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void common_hal_is31fl3741_is31fl3741_deinit(is31fl3741_is31fl3741_obj_t *self) {
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self->base.type = NULL;
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// If a framebuffer was passed in to the constructor, NULL the reference
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// here so that it will become GC'able
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self->framebuffer = NULL;
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}
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void common_hal_is31fl3741_is31fl3741_set_paused(is31fl3741_is31fl3741_obj_t *self, bool paused) {
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self->paused = paused;
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}
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bool common_hal_is31fl3741_is31fl3741_get_paused(is31fl3741_is31fl3741_obj_t *self) {
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return self->paused;
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}
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void common_hal_is31fl3741_is31fl3741_set_global_current(is31fl3741_is31fl3741_obj_t *self, uint8_t current) {
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common_hal_displayio_is31fl3741_begin_transaction(self);
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is31fl3741_set_current(self->i2c, self->device_address, current);
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common_hal_displayio_is31fl3741_end_transaction(self);
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}
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uint8_t common_hal_is31fl3741_is31fl3741_get_global_current(is31fl3741_is31fl3741_obj_t *self) {
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common_hal_displayio_is31fl3741_begin_transaction(self);
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uint8_t current = is31fl3741_get_current(self->i2c, self->device_address);
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common_hal_displayio_is31fl3741_end_transaction(self);
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return current;
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}
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void common_hal_is31fl3741_is31fl3741_refresh(is31fl3741_is31fl3741_obj_t *self, uint8_t *dirtyrows) {
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common_hal_displayio_is31fl3741_begin_transaction(self);
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uint8_t dirty_row_flags = 0xFF; // only supports 8 rows gotta fix
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if (dirtyrows != 0) {
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dirty_row_flags = *dirtyrows;
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}
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if (!self->paused) {
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if (self->scale) {
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uint32_t *buffer = self->bufinfo.buf;
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for (int x = 0; x < self->scale_width; x++) {
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uint32_t *ptr = &buffer[x * 3]; // Entry along top scan line w/x offset
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for (int y = 0; y < self->scale_height; y++) {
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uint16_t rsum = 0, gsum = 0, bsum = 0;
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// Inner x/y loops are row-major on purpose (less pointer math)
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for (uint8_t yy = 0; yy < 3; yy++) {
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for (uint8_t xx = 0; xx < 3; xx++) {
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uint32_t rgb = ptr[xx];
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rsum += rgb >> 16 & 0xFF;
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gsum += (rgb >> 8) & 0xFF;
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bsum += rgb & 0xFF;
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}
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ptr += self->width; // canvas->width(); // Advance one scan line
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}
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rsum = rsum / 9;
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gsum = gsum / 9;
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bsum = bsum / 9;
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uint32_t color = 0;
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if (self->auto_gamma) {
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color = (IS31GammaTable[rsum] << 16) +
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(IS31GammaTable[gsum] << 8) +
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IS31GammaTable[bsum];
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} else {
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color = (rsum << 16) + (gsum << 8) + bsum;
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}
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is31fl3741_draw_pixel(self->i2c, self->device_address, x, y, color);
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}
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}
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} else {
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uint32_t *buffer = self->bufinfo.buf;
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for (int y = 0; y < self->height; y++) {
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if ((dirty_row_flags >> y) & 0x1) {
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uint32_t color = 0;
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if (self->auto_gamma) {
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color = IS31GammaTable[((*buffer) >> 16 & 0xFF)] +
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IS31GammaTable[((*buffer) >> 8 & 0xFF)] +
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IS31GammaTable[((*buffer) & 0xFF)];
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} else {
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color = *buffer;
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}
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for (int x = 0; x < self->width; x++) {
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is31fl3741_draw_pixel(self->i2c, self->device_address, x, y, color);
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buffer++;
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}
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}
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}
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}
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}
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common_hal_displayio_is31fl3741_end_transaction(self);
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}
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int common_hal_is31fl3741_is31fl3741_get_width(is31fl3741_is31fl3741_obj_t *self) {
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return self->width;
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}
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int common_hal_is31fl3741_is31fl3741_get_height(is31fl3741_is31fl3741_obj_t *self) {
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return self->height;
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}
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void common_hal_displayio_is31fl3741_begin_transaction(is31fl3741_is31fl3741_obj_t *self) {
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while (!common_hal_busio_i2c_try_lock(self->i2c)) {
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RUN_BACKGROUND_TASKS;
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}
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}
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void common_hal_displayio_is31fl3741_end_transaction(is31fl3741_is31fl3741_obj_t *self) {
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common_hal_busio_i2c_unlock(self->i2c);
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}
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void *common_hal_is31fl3741_allocator_impl(size_t sz) {
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supervisor_allocation *allocation = allocate_memory(align32_size(sz), false, true);
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return allocation ? allocation->ptr : NULL;
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}
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void common_hal_is31fl3741_free_impl(void *ptr_in) {
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free_memory(allocation_from_ptr(ptr_in));
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}
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void is31fl3741_is31fl3741_collect_ptrs(is31fl3741_is31fl3741_obj_t *self) {
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gc_collect_ptr(self->framebuffer);
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}
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uint8_t cur_page = 99; // set to invalid page to start
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void is31fl3741_send_unlock(busio_i2c_obj_t *i2c, uint8_t addr) {
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uint8_t unlock[2] = { 0xFE, 0xC5 }; // unlock command
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common_hal_busio_i2c_write(i2c, addr, unlock, 2, true);
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}
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void is31fl3741_set_page(busio_i2c_obj_t *i2c, uint8_t addr, uint8_t p) {
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if (p == cur_page) {
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return;
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}
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cur_page = p;
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is31fl3741_send_unlock(i2c, addr);
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uint8_t page[2] = { 0xFD, 0x00 }; // page command
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page[1] = p;
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common_hal_busio_i2c_write(i2c, addr, page, 2, true);
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}
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void is31fl3741_send_enable(busio_i2c_obj_t *i2c, uint8_t addr) {
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is31fl3741_set_page(i2c, addr, 4);
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uint8_t enable[2] = { 0x00, 0x01 }; // enable command
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common_hal_busio_i2c_write(i2c, addr, enable, 2, true);
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}
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void is31fl3741_send_reset(busio_i2c_obj_t *i2c, uint8_t addr) {
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is31fl3741_set_page(i2c, addr, 4);
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uint8_t rst[2] = { 0x3F, 0xAE }; // reset command
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common_hal_busio_i2c_write(i2c, addr, rst, 2, true);
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}
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void is31fl3741_set_current(busio_i2c_obj_t *i2c, uint8_t addr, uint8_t current) {
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is31fl3741_set_page(i2c, addr, 4);
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uint8_t gcur[2] = { 0x01, 0x00 }; // global current command
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gcur[1] = current;
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common_hal_busio_i2c_write(i2c, addr, gcur, 2, true);
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}
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uint8_t is31fl3741_get_current(busio_i2c_obj_t *i2c, uint8_t addr) {
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is31fl3741_set_page(i2c, addr, 4);
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uint8_t gcur = 0x01; // global current command
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common_hal_busio_i2c_write(i2c, addr, &gcur, 1, true);
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uint8_t data = 0;
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common_hal_busio_i2c_read(i2c, addr, &data, 1);
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return data;
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}
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void is31fl3741_set_led(busio_i2c_obj_t *i2c, uint8_t addr, uint16_t led, uint8_t level, uint8_t page) {
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uint8_t cmd[2] = { 0x00, 0x00 };
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if (led < 180) {
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is31fl3741_set_page(i2c, addr, page);
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cmd[0] = (uint8_t)led;
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} else {
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is31fl3741_set_page(i2c, addr, page + 1);
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cmd[0] = (uint8_t)(led - 180);
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}
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cmd[1] = level;
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common_hal_busio_i2c_write(i2c, addr, cmd, 2, true);
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}
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void is31fl3741_draw_pixel(busio_i2c_obj_t *i2c, uint8_t addr, int16_t x, int16_t y, uint32_t color) {
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uint8_t r = color >> 16 & 0xFF;
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uint8_t g = color >> 8 & 0xFF;
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uint8_t b = color & 0xFF;
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int16_t x1 = (x * 5 + y) * 3;
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uint16_t ridx = glassesmatrix_ledmap[x1 + 2];
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if (ridx != 65535) {
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uint16_t gidx = glassesmatrix_ledmap[x1 + 1];
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uint16_t bidx = glassesmatrix_ledmap[x1 + 0];
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is31fl3741_set_led(i2c, addr, ridx, r, 0);
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is31fl3741_set_led(i2c, addr, gidx, g, 0);
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is31fl3741_set_led(i2c, addr, bidx, b, 0);
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}
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}
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