用esp32写一个驱动SSD1309的代码
时间: 2024-05-15 17:12:11 浏览: 22
好的,以下是一个基本的驱动SSD1309的代码,适用于ESP32:
```
#include <Wire.h>
#define SSD1309_I2C_ADDRESS 0x3C // SSD1309的I2C地址
#define SSD1309_WIDTH 128 // SSD1309的宽度
#define SSD1309_HEIGHT 64 // SSD1309的高度
#define SSD1309_CMD_DISPLAY_OFF 0xAE
#define SSD1309_CMD_DISPLAY_ON 0xAF
#define SSD1309_CMD_SET_MEMORY_MODE 0x20
#define SSD1309_CMD_SET_COLUMN_ADDRESS 0x21
#define SSD1309_CMD_SET_PAGE_ADDRESS 0x22
#define SSD1309_CMD_SET_DISPLAY_START_LINE 0x40
#define SSD1309_CMD_SET_CONTRAST_CONTROL 0x81
#define SSD1309_CMD_SET_SEGMENT_REMAP 0xA0
#define SSD1309_CMD_SET_COM_SCAN_MODE_NORMAL 0xC0
#define SSD1309_CMD_SET_COM_SCAN_MODE_REMAP 0xC8
#define SSD1309_CMD_SET_COM_PINS 0xDA
#define SSD1309_CMD_SET_DISPLAY_OFFSET 0xD3
#define SSD1309_CMD_SET_DISPLAY_CLOCK_DIVIDE_RATIO 0xD5
#define SSD1309_CMD_SET_PRECHARGE_PERIOD 0xD9
#define SSD1309_CMD_SET_COM_PINS_HARDWARE_CONFIGURATION 0xDB
#define SSD1309_CMD_SET_VCOMH_DESELECT_LEVEL 0xDB
#define SSD1309_CMD_NOP 0xE3
uint8_t ssd1309_buffer[SSD1309_WIDTH * SSD1309_HEIGHT / 8];
void ssd1309_command(uint8_t cmd)
{
Wire.beginTransmission(SSD1309_I2C_ADDRESS);
Wire.write(0x00); // Co = 0, D/C# = 0
Wire.write(cmd);
Wire.endTransmission();
}
void ssd1309_initialize()
{
Wire.begin();
ssd1309_command(SSD1309_CMD_DISPLAY_OFF);
ssd1309_command(SSD1309_CMD_SET_MEMORY_MODE);
ssd1309_command(0x00); // Horizontal address mode
ssd1309_command(SSD1309_CMD_SET_COLUMN_ADDRESS);
ssd1309_command(0x00);
ssd1309_command(0x7F);
ssd1309_command(SSD1309_CMD_SET_PAGE_ADDRESS);
ssd1309_command(0x00);
ssd1309_command(0x07);
ssd1309_command(SSD1309_CMD_SET_DISPLAY_START_LINE);
ssd1309_command(SSD1309_CMD_SET_CONTRAST_CONTROL);
ssd1309_command(0xFF);
ssd1309_command(SSD1309_CMD_SET_SEGMENT_REMAP);
ssd1309_command(SSD1309_CMD_SET_COM_SCAN_MODE_NORMAL);
ssd1309_command(SSD1309_CMD_SET_COM_PINS);
ssd1309_command(0x12);
ssd1309_command(SSD1309_CMD_SET_DISPLAY_OFFSET);
ssd1309_command(0x00);
ssd1309_command(SSD1309_CMD_SET_DISPLAY_CLOCK_DIVIDE_RATIO);
ssd1309_command(0xF0);
ssd1309_command(SSD1309_CMD_SET_PRECHARGE_PERIOD);
ssd1309_command(0x22);
ssd1309_command(SSD1309_CMD_SET_COM_PINS_HARDWARE_CONFIGURATION);
ssd1309_command(0x02);
ssd1309_command(SSD1309_CMD_SET_VCOMH_DESELECT_LEVEL);
ssd1309_command(0x02);
ssd1309_command(SSD1309_CMD_NOP);
ssd1309_command(SSD1309_CMD_DISPLAY_ON);
}
void ssd1309_clear()
{
memset(ssd1309_buffer, 0, sizeof(ssd1309_buffer));
}
void ssd1309_draw_pixel(uint8_t x, uint8_t y, bool on)
{
if (x >= SSD1309_WIDTH || y >= SSD1309_HEIGHT) {
return;
}
if (on) {
ssd1309_buffer[x + (y / 8) * SSD1309_WIDTH] |= (1 << (y % 8));
} else {
ssd1309_buffer[x + (y / 8) * SSD1309_WIDTH] &= ~(1 << (y % 8));
}
}
void ssd1309_display()
{
ssd1309_command(SSD1309_CMD_SET_COLUMN_ADDRESS);
ssd1309_command(0x00);
ssd1309_command(0x7F);
ssd1309_command(SSD1309_CMD_SET_PAGE_ADDRESS);
ssd1309_command(0x00);
ssd1309_command(0x07);
Wire.beginTransmission(SSD1309_I2C_ADDRESS);
Wire.write(0x40); // Co = 0, D/C# = 1
Wire.write(ssd1309_buffer, sizeof(ssd1309_buffer));
Wire.endTransmission();
}
void setup()
{
ssd1309_initialize();
ssd1309_clear();
ssd1309_draw_pixel(0, 0, true);
ssd1309_display();
}
void loop()
{
// Your code here.
}
```
注意:上述代码中使用了Wire库来控制I2C通信,因此需要在setup函数中调用Wire.begin()。此外,代码中使用了一个名为ssd1309_buffer的缓冲区,用于存储SSD1309的像素信息。在ssd1309_draw_pixel函数中,将像素信息存储在缓冲区中,最后在ssd1309_display函数中将缓冲区中的像素信息通过I2C传输给SSD1309进行显示。
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