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- /*
- * lcd.c
- *
- * Copyright (c) 2024 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 <stdint.h>
- #include <string.h>
- #include "pico/stdlib.h"
- #include "hardware/i2c.h"
-
- #include "ssd1306.h"
- #include "logo.h"
- #include "main.h"
- #include "lcd.h"
-
- static i2c_inst_t *gpio_i2c_proto = i2c0;
- static const uint gpio_num_proto[2] = { 0, 1 };
-
- static i2c_inst_t *gpio_i2c_v2 = i2c0;
- static const uint gpio_num_v2[2] = { 16, 17 };
-
- #define LCD_ADDR 0x3C
-
- static ssd1306_t disp;
-
- void lcd_init(void) {
- if (hw_type == HW_PROTOTYPE) {
- i2c_init(gpio_i2c_proto, 1000 * 1000);
- for (uint i = 0; i < sizeof(gpio_num_proto) / sizeof(gpio_num_proto[0]); i++) {
- gpio_set_function(gpio_num_proto[i], GPIO_FUNC_I2C);
- gpio_pull_up(gpio_num_proto[i]);
- }
-
- disp.external_vcc = false;
- ssd1306_init(&disp, LCD_WIDTH, LCD_HEIGHT, LCD_ADDR, gpio_i2c_proto);
- } else if (hw_type == HW_V2) {
- i2c_init(gpio_i2c_v2, 1000 * 1000);
- for (uint i = 0; i < sizeof(gpio_num_v2) / sizeof(gpio_num_v2[0]); i++) {
- gpio_set_function(gpio_num_v2[i], GPIO_FUNC_I2C);
- gpio_pull_up(gpio_num_v2[i]);
- }
-
- disp.external_vcc = false;
- ssd1306_init(&disp, LCD_WIDTH, LCD_HEIGHT, LCD_ADDR, gpio_i2c_v2);
- }
-
- ssd1306_clear(&disp);
- for (uint y = 0; y < LOGO_HEIGHT; y++) {
- for (uint x = 0; x < LOGO_WIDTH; x++) {
- const uint pos = y * LOGO_WIDTH + x;
- const uint bit = 7 - (pos % 8);
- if (logo_data[pos / 8] & (1 << bit)) {
- ssd1306_draw_pixel(&disp, x, y);
- }
- }
- }
- ssd1306_show(&disp);
- }
-
- void lcd_draw(const char *mode, const char *val, const char *bat) {
- ssd1306_clear(&disp);
- ssd1306_draw_string(&disp, 0, 0, 2, mode);
- ssd1306_draw_string(&disp, 0, 20, 4, val);
- ssd1306_draw_string(&disp, 0, LCD_HEIGHT - 1 - 10, 1, bat);
-
- ssd1306_show(&disp);
- }
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