148 lines
3.4 KiB
C
148 lines
3.4 KiB
C
#include "ssd096_oled.h"
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static void i2c_start(void)
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{
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GPIO_SET(SSD096_SDA_PORT, SSD096_SDA_PIN);
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GPIO_SET(SSD096_SCK_PORT, SSD096_SCK_PIN);
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GPIO_RESET(SSD096_SDA_PORT, SSD096_SDA_PIN);
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GPIO_RESET(SSD096_SCK_PORT, SSD096_SCK_PIN);
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}
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static void i2c_stop(void)
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{
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GPIO_RESET(SSD096_SDA_PORT, SSD096_SDA_PIN);
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GPIO_SET(SSD096_SCK_PORT, SSD096_SCK_PIN);
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GPIO_SET(SSD096_SDA_PORT, SSD096_SDA_PIN);
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}
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void i2c_write_byte(uint8_t data)
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{
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uint8_t i;
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for (i = 0; i < 8; i++)
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{
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if ((data & 0x80) >> i)
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GPIO_SET(SSD096_SDA_PORT, SSD096_SDA_PIN);
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else
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GPIO_RESET(SSD096_SDA_PORT, SSD096_SDA_PIN);
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data <<= 1;
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GPIO_SET(SSD096_SCK_PORT, SSD096_SCK_PIN);
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GPIO_RESET(SSD096_SCK_PORT, SSD096_SCK_PIN);
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}
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GPIO_SET(SSD096_SCK_PORT, SSD096_SCK_PIN); // 额外的一个时钟，不处理应答信号
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GPIO_RESET(SSD096_SCK_PORT, SSD096_SCK_PIN);
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}
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/**
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* @brief 向I2C设备写入命令
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*
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* 通过I2C接口向指定设备写入一个命令字节。
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*
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* @param command 要写入的命令字节
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*/
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static void i2c_write_command(uint8_t command)
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{
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i2c_start();
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i2c_write_byte(0x78);
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i2c_write_byte(0x00);
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i2c_write_byte(command);
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i2c_stop();
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}
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/**
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* @brief 向I2C设备写入一个字节的数据
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*
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* 该函数通过I2C总线向指定设备写入一个字节的数据。
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*
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* @param data 要写入的数据字节
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*/
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static void i2c_write_data(uint8_t data)
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{
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i2c_start();
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i2c_write_byte(0x78);
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i2c_write_byte(0x40);
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i2c_write_byte(data);
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i2c_stop();
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}
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/**
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* @brief 设置SSD096 OLED显示屏上的光标位置
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*
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* 设置SSD096 OLED显示屏上的光标位置到指定的x和y坐标。
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*
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* @param x 横向位置，取值范围为0到127
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* @param y 纵向位置，取值范围为0到63
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*/
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void ssd096_set_position(uint8_t x, uint8_t y)
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{
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i2c_write_command(0xb0 | y);
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i2c_write_command(0x10 | ((x & 0xf0) >> 4));
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i2c_write_command(0x00 | (x & 0x0f));
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}
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/**
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* @brief 清空SSD096显示屏
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*
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* 该函数将SSD096显示屏的内容清空，即将所有像素点设置为关闭状态。
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*
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* @note 该函数通过I2C接口向SSD096发送数据，以实现清屏操作。
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*/
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void ssd096_clear(void)
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{
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uint8_t i, j;
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for (i = 0; i < 8; i++)
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{
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ssd096_set_position(i, 0);
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for (j = 0; j < 128; j++)
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{
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i2c_write_data(0x00);
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}
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}
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}
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void ssd096_full(void)
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{
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uint8_t i, j;
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for (i = 0; i < 8; i++)
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{
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ssd096_set_position(i, 0);
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for (j = 0; j < 128; j++)
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{
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i2c_write_data(0xff);
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}
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}
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}
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/**
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* @brief 初始化SSD096显示驱动
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*
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* 该函数用于初始化SSD096显示驱动，完成基本的配置和初始化工作。
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*/
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void ssd096_init(void)
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{
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i2c_write_command(0xae);
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i2c_write_command(0xd5);
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i2c_write_command(0x80);
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i2c_write_command(0xa8);
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i2c_write_command(0x3f);
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i2c_write_command(0xd3);
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i2c_write_command(0x00);
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i2c_write_command(0x40);
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i2c_write_command(0xa1);
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i2c_write_command(0xc8);
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i2c_write_command(0xda);
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i2c_write_command(0x12);
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i2c_write_command(0x81);
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i2c_write_command(0xcf);
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i2c_write_command(0xd9);
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i2c_write_command(0xf1);
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i2c_write_command(0xdb);
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i2c_write_command(0x30);
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i2c_write_command(0xa4);
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i2c_write_command(0xa6);
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i2c_write_command(0x8d);
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i2c_write_command(0x14);
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i2c_write_command(0xaf);
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ssd096_clear();
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ssd096_full();
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}
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