108 lines
3.3 KiB
C++
108 lines
3.3 KiB
C++
#pragma once
|
|
|
|
#include "hardware/spi.h"
|
|
#include "hardware/gpio.h"
|
|
#include "../../common/pimoroni_common.hpp"
|
|
|
|
namespace pimoroni {
|
|
|
|
class ST7735 {
|
|
//--------------------------------------------------
|
|
// Constants
|
|
//--------------------------------------------------
|
|
public:
|
|
static const uint8_t DEFAULT_CS_PIN = 17;
|
|
static const uint8_t DEFAULT_DC_PIN = 16;
|
|
static const uint8_t DEFAULT_SCK_PIN = 18;
|
|
static const uint8_t DEFAULT_MOSI_PIN = 19;
|
|
static const uint8_t DEFAULT_BL_PIN = 20;
|
|
|
|
private:
|
|
static const uint8_t ROWS = 162;
|
|
static const uint8_t COLS = 132;
|
|
|
|
//--------------------------------------------------
|
|
// Variables
|
|
//--------------------------------------------------
|
|
private:
|
|
// screen properties
|
|
uint16_t width;
|
|
uint16_t height;
|
|
uint16_t row_stride;
|
|
|
|
public:
|
|
// frame buffer where pixel data is stored
|
|
uint16_t *frame_buffer;
|
|
|
|
private:
|
|
spi_inst_t *spi = spi0;
|
|
|
|
uint32_t dma_channel;
|
|
|
|
// interface pins with our standard defaults where appropriate
|
|
uint cs = DEFAULT_CS_PIN;
|
|
uint dc = DEFAULT_DC_PIN;
|
|
uint sck = DEFAULT_SCK_PIN;
|
|
uint mosi = DEFAULT_MOSI_PIN;
|
|
uint miso = PIN_UNUSED; // we generally don't use this pin
|
|
uint bl = DEFAULT_BL_PIN;
|
|
uint vsync = PIN_UNUSED; // only available on some products
|
|
|
|
uint32_t spi_baud = 30 * 1024 * 1024;
|
|
|
|
uint8_t offset_cols = 0;
|
|
uint8_t offset_rows = 0;
|
|
|
|
|
|
//--------------------------------------------------
|
|
// Constructors/Destructor
|
|
//--------------------------------------------------
|
|
public:
|
|
ST7735(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: // Don't read too much into this, the case is just here to avoid a compile error
|
|
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;
|
|
}
|
|
}
|
|
|
|
ST7735(uint16_t width, uint16_t height, uint16_t *frame_buffer) :
|
|
width(width), height(height), frame_buffer(frame_buffer) {}
|
|
|
|
ST7735(uint16_t width, uint16_t height, uint16_t *frame_buffer,
|
|
spi_inst_t *spi,
|
|
uint8_t cs, uint8_t dc, uint8_t sck, uint8_t mosi, uint8_t miso = -1, uint8_t bl = -1) :
|
|
width(width), height(height), frame_buffer(frame_buffer),
|
|
spi(spi), cs(cs), dc(dc), sck(sck), mosi(mosi), miso(miso), bl(bl) {}
|
|
|
|
|
|
//--------------------------------------------------
|
|
// Methods
|
|
//--------------------------------------------------
|
|
public:
|
|
void init(bool auto_init_sequence = true);
|
|
|
|
spi_inst_t* get_spi() const;
|
|
int get_cs() const;
|
|
int get_dc() const;
|
|
int get_sck() const;
|
|
int get_mosi() const;
|
|
int get_bl() const;
|
|
|
|
void command(uint8_t command, size_t len = 0, const char *data = NULL);
|
|
void update(bool dont_block = false);
|
|
void set_backlight(uint8_t brightness);
|
|
};
|
|
|
|
}
|