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#pragma once
#include <cstdint>
#include "driver/spi_master.h"
#include "lvgl/lvgl.h"
#include "result.hpp"
#include "display_init.hpp"
#include "gpio_expander.hpp"
#include "sys/_stdint.h"
namespace drivers {
/*
* Display driver for LVGL.
*/
class Display {
public:
enum Error {};
static auto create(GpioExpander* expander,
const displays::InitialisationData& init_data)
-> cpp::result<std::unique_ptr<Display>, Error>;
Display(GpioExpander* gpio, spi_device_handle_t handle);
~Display();
void WriteData();
void Flush(lv_disp_drv_t* disp_drv,
const lv_area_t* area,
lv_color_t* color_map);
void IRAM_ATTR PostTransaction(const spi_transaction_t& transaction);
void ServiceTransactions();
private:
GpioExpander* gpio_;
spi_device_handle_t handle_;
lv_disp_draw_buf_t buffers_;
lv_disp_drv_t driver_;
lv_disp_t* display_ = nullptr;
enum TransactionType {
COMMAND = 0,
DATA = 1,
};
enum TransactionFlags {
LVGL_FLUSH = 1,
};
void SendInitialisationSequence(const uint8_t* data);
void SendCommandWithData(uint8_t command,
const uint8_t* data,
size_t length,
uintptr_t flags = 0);
void SendCmd(const uint8_t* data, size_t length, uintptr_t flags = 0);
void SendData(const uint8_t* data, size_t length, uintptr_t flags = 0);
void SendTransaction(TransactionType type,
const uint8_t* data,
size_t length,
uint32_t flags = 0);
};
} // namespace drivers
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