pimoroni-pico/drivers/st7789/st7789.hpp

88 wiersze
2.5 KiB
C++

#pragma once
#include "hardware/spi.h"
#include "hardware/gpio.h"
#include "../../common/pimoroni_common.hpp"
namespace pimoroni {
class ST7789 {
spi_inst_t *spi = PIMORONI_SPI_DEFAULT_INSTANCE;
//--------------------------------------------------
// Variables
//--------------------------------------------------
private:
// screen properties
uint16_t width;
uint16_t height;
uint16_t row_stride;
uint32_t dma_channel;
// interface pins with our standard defaults where appropriate
uint cs = SPI_BG_FRONT_CS;
uint dc = SPI_DEFAULT_MISO;
uint sck = SPI_DEFAULT_SCK;
uint mosi = SPI_DEFAULT_MOSI;
uint miso = PIN_UNUSED; // used as data/command
uint bl = SPI_BG_FRONT_PWM;
uint vsync = PIN_UNUSED; // only available on some products
uint32_t spi_baud = 16 * 1000 * 1000;
public:
// frame buffer where pixel data is stored
uint16_t *frame_buffer;
ST7789(uint16_t width, uint16_t height, uint16_t *frame_buffer, BG_SPI_SLOT slot) :
width(width), height(height), frame_buffer(frame_buffer) {
switch(slot) {
case PICO_EXPLORER_ONBOARD:
cs = SPI_BG_FRONT_CS;
bl = PIN_UNUSED;
break;
case BG_SPI_FRONT:
cs = SPI_BG_FRONT_CS;
bl = SPI_BG_FRONT_PWM;
break;
case BG_SPI_BACK:
cs = SPI_BG_BACK_CS;
bl = SPI_BG_BACK_PWM;
break;
}
}
ST7789(uint16_t width, uint16_t height, uint16_t *frame_buffer) :
width(width), height(height), frame_buffer(frame_buffer) {}
ST7789(uint16_t width, uint16_t height, uint16_t *frame_buffer,
spi_inst_t *spi,
uint cs, uint dc, uint sck, uint mosi, uint miso = PIN_UNUSED, uint bl = PIN_UNUSED) :
spi(spi),
width(width), height(height),
cs(cs), dc(dc), sck(sck), mosi(mosi), miso(miso), bl(bl), frame_buffer(frame_buffer) {}
//--------------------------------------------------
// Methods
//--------------------------------------------------
public:
void init(bool auto_init_sequence = true, bool round = false);
spi_inst_t* get_spi() const;
uint get_cs() const;
uint get_dc() const;
uint get_sck() const;
uint get_mosi() const;
uint get_bl() const;
void command(uint8_t command, size_t len = 0, const char *data = NULL);
void vsync_callback(gpio_irq_callback_t callback);
void update(bool dont_block = false);
void set_backlight(uint8_t brightness);
void flip();
};
}