229 lines
8.5 KiB
C
229 lines
8.5 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) 2021 Mark Komus
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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-bindings/is31fl3741/IS31FL3741.h"
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#include "shared-bindings/is31fl3741/FrameBuffer.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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#include "supervisor/port.h"
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void common_hal_is31fl3741_framebuffer_construct(is31fl3741_framebuffer_obj_t *self, int width, int height, mp_obj_t framebuffer, is31fl3741_IS31FL3741_obj_t *is31, mp_obj_t mapping) {
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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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self->is31fl3741 = is31;
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common_hal_busio_i2c_never_reset(self->is31fl3741->i2c);
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mp_obj_t *items;
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size_t len;
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mp_obj_tuple_get(mapping, &len, &items);
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if (len != (size_t)(self->scale_width * self->scale_height * 3)) {
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mp_raise_ValueError(MP_ERROR_TEXT("LED mappings must match display size"));
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}
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self->mapping = port_malloc(sizeof(uint16_t) * len, false);
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if (self->mapping == NULL) {
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m_malloc_fail(sizeof(uint16_t) * len);
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}
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for (size_t i = 0; i < len; i++) {
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mp_int_t value = mp_obj_get_int(items[i]);
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// We only store up to 16 bits
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if (value > 0xFFFF) {
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value = 0xFFFF;
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}
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self->mapping[i] = (uint16_t)value;
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}
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common_hal_is31fl3741_framebuffer_reconstruct(self, framebuffer);
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}
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void common_hal_is31fl3741_framebuffer_reconstruct(is31fl3741_framebuffer_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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if (self->framebuffer == NULL && self->bufinfo.buf != NULL) {
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port_free(self->bufinfo.buf);
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}
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self->framebuffer = NULL;
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self->bufinfo.buf = port_malloc(self->bufsize, false);
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if (self->bufinfo.buf == NULL) {
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return;
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}
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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_is31fl3741_begin_transaction(self->is31fl3741);
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common_hal_is31fl3741_send_reset(self->is31fl3741);
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common_hal_is31fl3741_set_current(self->is31fl3741, 0xFE);
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// set scale (brightness) to max for all LEDs
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for (int i = 0; i < 351; i++) {
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common_hal_is31fl3741_set_led(self->is31fl3741, i, 0xFF, 2);
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}
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common_hal_is31fl3741_send_enable(self->is31fl3741);
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common_hal_is31fl3741_end_transaction(self->is31fl3741);
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self->paused = 0;
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}
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void common_hal_is31fl3741_framebuffer_deinit(is31fl3741_framebuffer_obj_t *self) {
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common_hal_is31fl3741_end_transaction(self->is31fl3741); // in case we still had a lock
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common_hal_is31fl3741_IS31FL3741_deinit(self->is31fl3741);
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if (self->mapping != NULL) {
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port_free(self->mapping);
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self->mapping = NULL;
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}
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if (self->framebuffer == NULL && self->bufinfo.buf != NULL) {
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port_free(self->bufinfo.buf);
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}
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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_framebuffer_set_paused(is31fl3741_framebuffer_obj_t *self, bool paused) {
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self->paused = paused;
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}
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bool common_hal_is31fl3741_framebuffer_get_paused(is31fl3741_framebuffer_obj_t *self) {
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return self->paused;
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}
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void common_hal_is31fl3741_framebuffer_refresh(is31fl3741_framebuffer_obj_t *self, uint8_t *dirtyrows) {
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if (!self->paused) {
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common_hal_is31fl3741_begin_transaction(self->is31fl3741);
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uint8_t dirty_row_flags = 0xFF;
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if (self->scale) {
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// Based on the Arduino IS31FL3741 driver code
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// dirtyrows flag current not implemented for scaled displays
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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; // 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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common_hal_is31fl3741_draw_pixel(self->is31fl3741, x, y, color, self->mapping, self->scale_height);
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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 ((dirtyrows != 0) && ((y % 8) == 0)) {
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dirty_row_flags = *dirtyrows++;
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}
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if ((dirty_row_flags >> (y % 8)) & 0x1) {
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for (int x = 0; x < self->width; x++) {
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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)] << 16) +
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(IS31GammaTable[((*buffer) >> 8 & 0xFF)] << 8) +
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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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common_hal_is31fl3741_draw_pixel(self->is31fl3741, x, y, color, self->mapping, self->scale_height);
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buffer++;
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}
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} else {
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buffer += self->width; // row did not have to be redrawn, skip it in the buffer
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}
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}
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}
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common_hal_is31fl3741_end_transaction(self->is31fl3741);
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}
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}
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int common_hal_is31fl3741_framebuffer_get_width(is31fl3741_framebuffer_obj_t *self) {
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return self->width;
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}
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int common_hal_is31fl3741_framebuffer_get_height(is31fl3741_framebuffer_obj_t *self) {
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return self->height;
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}
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void is31fl3741_framebuffer_collect_ptrs(is31fl3741_framebuffer_obj_t *self) {
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gc_collect_ptr(self->framebuffer);
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gc_collect_ptr(self->is31fl3741->i2c);
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gc_collect_ptr(self->is31fl3741);
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}
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