Initial import of STM32 IoT sensor node
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// 作者：魏明择
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#include "oled.h"
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#include "stdlib.h"
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#include "systick.h"
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#include "gpio_iic.h"
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#include "wfont.h"
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#include "string.h"
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uint8_t OLED_frame_buffer[128][8] = {0};
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void iic_start_Oled(void)
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{
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iic_start();
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}
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void iic_stop_Oled(void)
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{
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iic_stop();
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}
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void iic_wait_ack_Oled(void)
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{
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iic_wait_ack();
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}
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void OLED_write_command(u8 IIC_Command)
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{
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iic_start();
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iic_send_byte(0x78);
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iic_wait_ack();
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iic_send_byte(0x00);
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iic_wait_ack();
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iic_send_byte(IIC_Command);
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iic_wait_ack();
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iic_stop();
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}
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void OLED_write_data(u8 IIC_Data)
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{
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iic_start();
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iic_send_byte(0x78);
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iic_wait_ack();
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iic_send_byte(0x40);
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iic_wait_ack();
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iic_send_byte(IIC_Data);
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iic_wait_ack();
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iic_stop();
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}
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void oled_fill(u8 fill_Data)
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{
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u8 page;
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u8 n;
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for (page = 0; page < 8; page++)
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for (n = 0; n < 128; n++)
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OLED_frame_buffer[n][page] = fill_Data;
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}
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void oled_draw_picture(const u8 *buf)
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{
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const u8 *p = buf;
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int page;
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int x;
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for (page = 0; page < 8; page++)
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{
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for (x = 0; x < 128; x++)
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{
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OLED_frame_buffer[x][page] = *p;
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p++;
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}
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}
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}
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void oled_display_on(void)
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{
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OLED_write_command(0X8D);
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OLED_write_command(0X14);
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OLED_write_command(0XAF);
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}
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void oled_display_off(void)
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{
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OLED_write_command(0X8D);
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OLED_write_command(0X10);
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OLED_write_command(0XAE);
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}
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void oled_clear_frame_buffer(void)
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{
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memset(OLED_frame_buffer, 0, sizeof(OLED_frame_buffer));
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}
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void oled_clear(void)
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{
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oled_clear_frame_buffer();
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oled_refresh_framebuffer();
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}
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void oled_init(void)
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{
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iic_init();
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delay_ms(800);
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OLED_write_command(0xAE); // display off
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OLED_write_command(0x20); // Set Memory Addressing Mode
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OLED_write_command(0x10); // 00,Horizontal Addressing Mode;01,Vertical Addressing Mode;10,Page Addressing Mode (RESET);11,Invalid
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OLED_write_command(0xb0); // Set Page Start Address for Page Addressing Mode,0-7
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OLED_write_command(0xc8); // Set COM Output Scan Direction
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OLED_write_command(0x02); //---set low column address
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OLED_write_command(0x10); //---set high column address
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OLED_write_command(0x40); //--set start line address
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OLED_write_command(0x81); //--set contrast control register
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OLED_write_command(0xCf); // 7f
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OLED_write_command(0xa1); //--set segment re-map 0 to 127
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OLED_write_command(0xa6); //--set normal display
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OLED_write_command(0xa8); //--set multiplex ratio(1 to 64)
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OLED_write_command(0x3F); //
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OLED_write_command(0xa4); // 0xa4,Output follows RAM content;0xa5,Output ignores RAM content
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OLED_write_command(0xd3); //-set display offset
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OLED_write_command(0x00); //-not offset
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OLED_write_command(0xd5); //--set display clock divide ratio/oscillator frequency
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OLED_write_command(0xf0); //--set divide ratio
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OLED_write_command(0xd9); //--set pre-charge period
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OLED_write_command(0x22); //
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OLED_write_command(0xda); //--set com pins hardware configuration
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OLED_write_command(0x12);
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OLED_write_command(0xdb); //--set vcomh
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OLED_write_command(0x40); // 0x20,0.77xVcc
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OLED_write_command(0x8d); //--set DC-DC enable
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OLED_write_command(0x14); //
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OLED_write_command(0xaf); //--turn on oled panel
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/*
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OLED_write_command(0xAE);//--display off
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OLED_write_command(0x00);//---set low column address
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OLED_write_command(0x10);//---set high column address
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OLED_write_command(0x40);//--set start line address
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OLED_write_command(0xB0);//--set page address
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OLED_write_command(0x81); // contract control
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OLED_write_command(0xFF);//--128
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OLED_write_command(0xA1);//set segment remap
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OLED_write_command(0xA6);//--normal / reverse
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OLED_write_command(0xA8);//--set multiplex ratio(1 to 64)
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OLED_write_command(0x3F);//--1/32 duty
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OLED_write_command(0xC8);//Com scan direction
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OLED_write_command(0xD3);//-set display offset
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OLED_write_command(0x00);//
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OLED_write_command(0xD5);//set osc division
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OLED_write_command(0x80);//
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OLED_write_command(0xD8);//set area color mode off
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OLED_write_command(0x05);//
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OLED_write_command(0xD9);//Set Pre-Charge Period
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OLED_write_command(0xF1);//
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OLED_write_command(0xDA);//set com pin configuartion
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OLED_write_command(0x12);//
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OLED_write_command(0xDB);//set Vcomh
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OLED_write_command(0x30);//
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OLED_write_command(0x8D);//set charge pump enable
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OLED_write_command(0x14);//
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OLED_write_command(0xAF);//--turn on oled panel
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*/
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}
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void oled_draw_point(u8 x, u8 y, u8 val)
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{
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u8 page;
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u8 row;
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u8 point_pos = 0;
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if (x > 127 || y > 63)
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return; // 超出范围
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page = y >> 3;
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row = y & 0x7;
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point_pos = 1 << row; // 计算点在页的相对位置
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if (val)
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OLED_frame_buffer[x][page] |= point_pos; // 写1
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else
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OLED_frame_buffer[x][page] &= ~point_pos; // 写0
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}
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// 更新显示的点到OLED
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void oled_refresh_framebuffer(void)
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{
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u8 page;
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u8 x;
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for (page = 0; page < 8; page++)
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{
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OLED_write_command(0xB0 + page); // 设置页地址（0~7）
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OLED_write_command(0x00); // 设置显示位置—列低地址
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OLED_write_command(0x10); // 设置显示位置—列高地址
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for (x = 0; x < 128; x++)
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OLED_write_data(OLED_frame_buffer[x][page]);
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} // 更新显示
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}
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void oled_draw_chinese_text16(u8 x, u8 y, int cn_index)
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{
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int i, j;
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int page = y >> 3;
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cn_index <<= 1;
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for (i = 0; i < 16; i++)
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{
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for (j = 0; j < 2; j++)
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{
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OLED_frame_buffer[x + i][page + j] = hanzi16x16[cn_index + j][i];
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}
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}
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}
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void OLED_draw_english_text8(u8 x, u8 y, int en_index)
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{
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int i;
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int page = y >> 3;
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for (i = 0; i < 6; i++)
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{
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OLED_frame_buffer[x + i][page] = ascii6x8[en_index * 6 + i];
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}
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}
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void oled_draw_text8(u8 x, u8 y, const char *text)
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{
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const char *p = text;
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while (*p && x < 128 && y < 64)
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{
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if ((*p) & 0x80)
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{ // 中文跳过
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p += 2;
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x += 12;
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}
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else
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{ // 英文
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OLED_draw_english_text8(x, y, *p - ' ');
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p++;
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x += 6;
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}
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}
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}
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void OLED_draw_english_text16(u8 x, u8 y, int en_index)
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{
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int i;
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int j;
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int page = y >> 3;
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for (i = 0; i < 8; i++)
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{
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for (j = 0; j < 2; j++)
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{
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OLED_frame_buffer[x + i][page + j] = ascii8x16[(en_index << 4) + (j << 3) + i];
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}
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}
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}
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void oled_draw_text16(u8 x, u8 y, const char *text)
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{
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const char *p = text;
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while (*p && x < 128 && y < 64)
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{
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if ((*p) & 0x80)
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{ // 中文
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// 查找中文是第几个汉字
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const char *p_cn = hanzi_utf8_index;
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int cn_index = 0;
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while (*p_cn)
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{
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if (strncmp(p_cn, p, 2) == 0)
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{
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oled_draw_chinese_text16(x, y, cn_index);
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break;
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}
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p_cn += 2;
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cn_index++;
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}
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p += 2;
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x += 16;
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}
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else
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{ // 英文
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OLED_draw_english_text16(x, y, *p - ' ');
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p++;
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x += 8;
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}
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}
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}
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void oled_draw_rect(u8 x0, u8 y0, u8 x1, u8 y1)
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{
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u8 x;
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u8 y;
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for (x = x0; x <= x1; x++)
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{
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oled_draw_point(x, y0, 1);
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oled_draw_point(x, y1, 1);
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}
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for (y = y0 + 1; y < y1; y++)
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{
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oled_draw_point(x0, y, 1);
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oled_draw_point(x1, y, 1);
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}
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}
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void oled_fill_rect(u8 x0, u8 y0, u8 x1, u8 y1)
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{
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u8 x;
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u8 y;
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for (x = x0; x <= x1; x++)
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for (y = y0; y <= y1; y++)
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oled_draw_point(x, y, 1);
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}
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void oled_fill_circle(u8 x, u8 y, u8 r) // 画一个点
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{
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u8 i = 0;
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u8 j = 0;
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for (j = y - r; j <= y + r; j++)
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for (i = x - r; i <= x + r; i++)
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if ((x - i) * (x - i) + (y - j) * (y - j) <= r * r)
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oled_draw_point(i, j, 1);
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}
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