kopia lustrzana https://github.com/pimoroni/pimoroni-pico
60 wiersze
2.0 KiB
C++
60 wiersze
2.0 KiB
C++
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#pragma once
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#include <string>
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#include <math.h>
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#include "hardware/gpio.h" // Workaround SDK bug - https://github.com/raspberrypi/pico-sdk/issues/3
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#include "hardware/pwm.h"
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namespace pimoroni {
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class Tufty2040 {
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public:
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static const int WIDTH = 320;
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static const int HEIGHT = 240;
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static const uint8_t A = 7;
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static const uint8_t B = 8;
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static const uint8_t C = 9;
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static const uint8_t UP = 22;
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static const uint8_t DOWN = 6;
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static const uint8_t LED = 25;
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static const uint8_t BACKLIGHT = 2;
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static const uint8_t LCD_CS = 10;
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static const uint8_t LCD_DC = 11;
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static const uint8_t LCD_WR = 12;
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static const uint8_t LCD_RD = 13;
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static const uint8_t LCD_D0 = 14;
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public:
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Tufty2040() {
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gpio_set_function(LCD_D0 + 0, GPIO_FUNC_SIO); gpio_set_dir(LCD_D0 + 0, true);
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gpio_set_function(LCD_D0 + 1, GPIO_FUNC_SIO); gpio_set_dir(LCD_D0 + 1, true);
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gpio_set_function(LCD_D0 + 2, GPIO_FUNC_SIO); gpio_set_dir(LCD_D0 + 2, true);
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gpio_set_function(LCD_D0 + 3, GPIO_FUNC_SIO); gpio_set_dir(LCD_D0 + 3, true);
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gpio_set_function(LCD_D0 + 4, GPIO_FUNC_SIO); gpio_set_dir(LCD_D0 + 4, true);
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gpio_set_function(LCD_D0 + 5, GPIO_FUNC_SIO); gpio_set_dir(LCD_D0 + 5, true);
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gpio_set_function(LCD_D0 + 6, GPIO_FUNC_SIO); gpio_set_dir(LCD_D0 + 6, true);
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gpio_set_function(LCD_D0 + 7, GPIO_FUNC_SIO); gpio_set_dir(LCD_D0 + 7, true);
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// led control pin
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pwm_config cfg = pwm_get_default_config();
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pwm_set_wrap(pwm_gpio_to_slice_num(LED), 65535);
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pwm_init(pwm_gpio_to_slice_num(LED), &cfg, true);
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gpio_set_function(LED, GPIO_FUNC_PWM);
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led(0);
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}
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void led(uint8_t brightness) {
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// set the led brightness from 1 to 256 with gamma correction
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float gamma = 2.8;
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uint16_t v = (uint16_t)(pow((float)(brightness) / 256.0f, gamma) * 65535.0f + 0.5f);
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pwm_set_gpio_level(LED, v);
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}
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};
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}
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