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/*
* Copyright (c) 2022 Arm Limited. All rights reserved.
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "lcd_img.h"
#include "log_macros.h"
#include "glcd.h"
#include <string.h>
#include <assert.h>
static int show_title(void)
{
const char title[] = "Arm ML embedded code samples";
lcd_set_text_color(White);
return lcd_display_text(title, strlen(title), 10, 0, false);
}
int lcd_init(void)
{
GLCD_Initialize();
GLCD_Clear(Black);
return show_title();
}
int lcd_display_image(const uint8_t* data, const uint32_t width,
const uint32_t height, const uint32_t channels,
const uint32_t pos_x, const uint32_t pos_y,
const uint32_t downsample_factor)
{
/* Sanity checks */
assert(data);
if ((pos_x + width/downsample_factor > GLCD_WIDTH) ||
(pos_y + height/downsample_factor > GLCD_HEIGHT)) {
printf_err("Invalid image size for given location!\n");
return 1;
}
if (1 == channels || 3 == channels) {
GLCD_Image(data, width, height, channels, pos_x, pos_y,
downsample_factor);
} else {
printf_err("Only single and three channel images are supported!\n");
return 1;
}
return 0;
}
int lcd_display_text(const char* str, const size_t str_sz,
const uint32_t pos_x, const uint32_t pos_y,
const bool allow_multiple_lines)
{
/* We use a font 0 which is 9x15. */
const uint32_t x_span = 9; /* Each character is this 9 pixels "wide". */
const uint32_t y_span = 15; /* Each character is this 15 pixels "high". */
if (str_sz == 0) {
return 1;
}
/* If not within the LCD bounds, return error. */
if (pos_x + x_span > GLCD_WIDTH || pos_y + y_span > GLCD_HEIGHT) {
return 1;
} else {
const unsigned char font_idx = 0; /* We are using the custom font = 0 */
const uint32_t col = pos_x/x_span;
const uint32_t max_cols = GLCD_WIDTH/x_span - 1;
const uint32_t max_lines = GLCD_HEIGHT/y_span - 1;
uint32_t i = 0;
uint32_t current_line = pos_y/y_span;
uint32_t current_col = col;
/* Display the string on the LCD. */
for (i = 0; i < str_sz; ++i) {
if (allow_multiple_lines) {
/* If the next character won't fit. */
if (current_col > max_cols) {
current_col = col;
/* If the next line won't fit. */
if (++current_line > max_lines) {
return 1;
}
}
}
GLCD_DisplayChar(current_line, current_col++, font_idx, str[i]);
}
}
return 0;
}
int lcd_display_box(const uint32_t pos_x, const uint32_t pos_y,
const uint32_t width, const uint32_t height, const uint16_t color)
{
/* If not within the LCD bounds, return error. */
if (pos_x > GLCD_WIDTH || pos_y > GLCD_HEIGHT) {
return 1;
}
else {
GLCD_Box(pos_x, pos_y, width, height, color);
}
return 0;
}
int lcd_clear(const uint16_t color)
{
GLCD_Clear(color);
GLCD_SetTextColor(White);
return show_title();
}
int lcd_set_text_color(const uint16_t color)
{
GLCD_SetTextColor(color);
return 0;
}
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