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- /*
- * image.c
- *
- * Copyright (c) 2022 - 2023 Thomas Buck (thomas@xythobuz.de)
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * See <http://www.gnu.org/licenses/>.
- */
-
- #include <stdio.h>
- #include <string.h>
-
- #include "config.h"
- #include "lcd.h"
- #include "text.h"
- #include "lipo.h"
- #include "util.h"
- #include "wifi.h"
- #include "image.h"
-
- #pragma GCC diagnostic push
- #pragma GCC diagnostic ignored "-Wtrigraphs"
- #include "logo.h"
- #pragma GCC diagnostic pop
-
- #define BATT_INTERVAL_MS 777
-
- void image_draw(const char *data, uint width, uint height) {
- for (uint y = 0; y < height; y++) {
- for (uint x = 0; x < width; x++) {
- uint32_t pixel[3];
- HEADER_PIXEL(data, pixel);
-
- uint32_t color = RGB_565(pixel[0], pixel[1], pixel[2]);
- lcd_write_point(x, y, color);
- }
- }
- }
-
- void draw_splash(void) {
- image_draw(logo_rgb_data, logo_width, logo_height);
-
- struct text_font font_big = {
- .fontname = "DejaVuSerif32",
- };
- text_prepare_font(&font_big);
-
- struct text_font font_small = {
- .fontname = "DejaVuSerif16",
- };
- text_prepare_font(&font_small);
-
- struct text_conf text1 = {
- .text = "xythobuz.de",
- .x = 0,
- .y = 0,
- .justify = false,
- .alignment = MF_ALIGN_CENTER,
- .width = 240,
- .height = 240,
- .margin = 2,
- .fg = RGB_565(0xFF, 0xFF, 0xFF),
- .bg = RGB_565(0x00, 0x00, 0x00),
- .font = &font_big,
- };
- text_draw(&text1);
-
- struct text_conf text2 = {
- .text = __DATE__ " @ " __TIME__,
- .x = 0,
- .y = 195,
- .justify = false,
- .alignment = MF_ALIGN_CENTER,
- .width = 240,
- .height = 240,
- .margin = 2,
- .fg = RGB_565(0xFF, 0xFF, 0xFF),
- .bg = RGB_565(0x00, 0x00, 0x00),
- .font = &font_small,
- };
- text_draw(&text2);
- }
-
- void draw_battery_indicator(void) {
- static const float batt_warn_limit = 0.0f;
- static char prev_s[30] = {0};
- static uint32_t prev_c = 0;
-
- char s[30] = {0};
- float v = lipo_voltage();
- uint32_t c = RGB_565(0xFF, 0x00, 0x00);
- if (lipo_charging()) {
- // "Batt: 99.9% (4.20V)"
- snprintf(s, sizeof(s), "Batt: Charging ");
- c = RGB_565(0xFF, 0xFF, 0x00);
- } else {
- float percentage = lipo_percentage(v);
- snprintf(s, sizeof(s), "Batt: %02.1f%% (%.2fV)", percentage, v);
-
- if (percentage > batt_warn_limit) {
- float hue = map(percentage, batt_warn_limit, 100, 0.0, 0.333);
- c = from_hsv(hue, 1.0, 1.0);
- }
- }
-
- // only re-draw battery indicator when it has changed
- if ((strcmp(s, prev_s) == 0) && (prev_c == c)) {
- return;
- }
- strcpy(prev_s, s);
- prev_c = c;
-
- static struct text_font font = {
- .fontname = "fixed_10x20",
- .font = NULL,
- };
- if (font.font == NULL) {
- text_prepare_font(&font);
- }
-
- struct text_conf text = {
- .text = s,
- .x = 0,
- .y = 219,
- .justify = false,
- .alignment = MF_ALIGN_CENTER,
- .width = 240,
- .height = 240,
- .margin = 2,
- .fg = c,
- .bg = LCD_BLACK,
- .font = &font,
- };
- text_draw(&text);
- }
-
- void draw_wifi_indicator(void) {
- static char prev_s[30] = {0};
- char s[30] = {0};
-
- snprintf(s, sizeof(s), "WiFi: %17s", wifi_state());
-
- if (strcmp(s, prev_s) == 0) {
- return;
- }
- strcpy(prev_s, s);
-
- static struct text_font font = {
- .fontname = "fixed_10x20",
- .font = NULL,
- };
- if (font.font == NULL) {
- text_prepare_font(&font);
- }
-
- struct text_conf text = {
- .text = s,
- .x = 0,
- .y = 219 - 50,
- .justify = false,
- .alignment = MF_ALIGN_CENTER,
- .width = 240,
- .height = 240,
- .margin = 2,
- .fg = LCD_WHITE,
- .bg = LCD_BLACK,
- .font = &font,
- };
- text_draw(&text);
- }
-
- void battery_run(void) {
- static uint32_t last_run = 0;
- uint32_t now = to_ms_since_boot(get_absolute_time());
- if ((now >= (last_run + BATT_INTERVAL_MS)) || (last_run == 0)) {
- last_run = now;
- draw_battery_indicator();
- draw_wifi_indicator();
- }
- }
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