348 lines
8.9 KiB
C
348 lines
8.9 KiB
C
#include "SSD1306.h"
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#include "driver/i2c.h"
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#include "portmacro.h"
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#include "esp_log.h"
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#include "freertos/FreeRTOS.h"
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static char I2C_addr = 0;
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static int I2CHandle = NULL;
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static uint8_t SSD1306FrameBuffer[SSD1306BUFFERSIZE];
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static uint8_t SSD1306CursorX = 0;
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static uint8_t SSD1306CursorY = 0;
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static uint8_t SSD1306OffsetX = 0;
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static uint8_t SSD1306OffsetY = 0;
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static uint8_t SSD1306Width = SSD1306_WIDTH;
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static uint8_t SSD1306Height = SSD1306_HEIGHT;
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static uint8_t SSD1306Changed = 0;
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void SSD1306_Init(int i2c_master_port, char address)
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{
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I2CHandle = i2c_master_port;
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I2C_addr = address;
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if(!I2CHandle)
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return;
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SSD1306_Reset();
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vTaskDelay(100/portTICK_PERIOD_MS);
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//init display
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SSD1306_SetDisplayOn(0);
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SSD1306_WriteCMD(0x20); //Set Mem Addressing
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SSD1306_WriteCMD(0x00);
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SSD1306_WriteCMD(0xB0);//Set Page start
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SSD1306_WriteCMD(0xC0); //Set COM Output Scan Direction
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SSD1306_WriteCMD(0x00); //---set low column address
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SSD1306_WriteCMD(0x10); //---set high column address
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SSD1306_WriteCMD(0x40); //--set start line address - CHECK
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SSD1306_SetContrast(0xFF);
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SSD1306_WriteCMD(0xA1); //--set segment re-map 0 to 127 - CHECK
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SSD1306_WriteCMD(0xA6); //--set normal color
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// Set multiplex ratio.
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SSD1306_WriteCMD(0xA8);
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SSD1306_WriteCMD(0x1F); // Seems to work for 128px high displays too.
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SSD1306_WriteCMD(0xA4); //0xa4,Output follows RAM content;0xa5,Output ignores RAM content
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SSD1306_WriteCMD(0xD3); //-set display offset - CHECK
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SSD1306_WriteCMD(0x00); //-not offset
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SSD1306_WriteCMD(0xD5); //--set display clock divide ratio/oscillator frequency
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SSD1306_WriteCMD(0xF0); //--set divide ratio
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SSD1306_WriteCMD(0xD9); //--set pre-charge period
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SSD1306_WriteCMD(0x22); //
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SSD1306_WriteCMD(0xDA); //--set com pins hardware configuration - CHECK
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SSD1306_WriteCMD(0x02);
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SSD1306_WriteCMD(0xDB); //--set vcomh
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SSD1306_WriteCMD(0x20); //0x20,0.77xVcc
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SSD1306_WriteCMD(0x8D); //--set DC-DC enable
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SSD1306_WriteCMD(0x14); //
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SSD1306_SetDisplayOn(1); //--turn on SSD1306 panel
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//Set buffer to 0;
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for(uint16_t i =0; i < SSD1306BUFFERSIZE; i++)
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SSD1306FrameBuffer[i] = 0;
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}
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void SSD1306_UpdateScreen()
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{
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if(!I2CHandle)
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return;
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if(!SSD1306Changed)
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return;
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SSD1306Changed = 0;
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for(uint8_t i = 0; i < SSD1306_HEIGHT/8; i++) {
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SSD1306_WriteCMD(0xB0 + i); // Set the current RAM page address.
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SSD1306_WriteCMD(0x00);
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SSD1306_WriteCMD(0x10);
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SSD1306_WriteData(&SSD1306FrameBuffer[SSD1306_WIDTH*i],SSD1306_WIDTH);
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}
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}
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void SSD1306_WriteCMD(unsigned char cmd)
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{
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if(!I2CHandle)
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return;
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i2c_master_write_to_device(I2CHandle,I2C_addr,&cmd,1,100/portTICK_PERIOD_MS);
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}
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void SSD1306_WriteData(unsigned char *data,unsigned char len)
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{
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if(!I2CHandle)
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return;
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i2c_master_write_to_device(I2CHandle,I2C_addr,data,len,100/portTICK_PERIOD_MS);
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}
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void SSD1306_WriteChar(char c)
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{
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if(!I2CHandle)
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return;
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//First check if we have enough space to draw the character
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//Font size is 8x8
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//first we check width
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//The display is rotated 90* so we this is weird...
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if((SSD1306CursorX+1)*8 > SSD1306Height-SSD1306OffsetX)
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{
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//We do not fit so jump to the next line and set cursor back to 0
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SSD1306CursorY ++;
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SSD1306CursorX = SSD1306OffsetX;
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}
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//if we do not fit at the bottom jump to top
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if((SSD1306CursorY+1)+8 > SSD1306Width-SSD1306OffsetY)
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{
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SSD1306CursorX = SSD1306OffsetX;
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SSD1306CursorY = SSD1306OffsetY;
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}
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uint16_t offset = (SSD1306CursorY*8)+(SSD1306CursorX*128);
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for(uint16_t i =0 ; i < 8;i++)
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{
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SSD1306FrameBuffer[i+offset] = Font6x8[(c-32)*8+i];
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}
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SSD1306CursorX++;
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SSD1306Changed =1;
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}
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void SSD1306_WriteString(char *c, char len)
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{
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if(!I2CHandle)
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return;
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uint8_t i =0;
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for(i=0;i<len;i++)
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{
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if(c[i]==0)
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break;
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SSD1306_WriteChar(c[i]);
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}
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}
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void SSD1306_SetCursor(char x,char y)
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{
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if(!I2CHandle)
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return;
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SSD1306CursorX = x;
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SSD1306CursorY = y;
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}
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void SSD1306_SetTextArea(char offsetX, char width, char offsetY, char height)
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{
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if(!I2CHandle)
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return;
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SSD1306OffsetX = offsetX;
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SSD1306OffsetY = offsetY;
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SSD1306Width = width;
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SSD1306Height = height;
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SSD1306CursorX = offsetX;
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SSD1306CursorY = offsetY;
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}
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void SSD1306_SetPixel(char x, char y, char value)
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{
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if(!I2CHandle)
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return;
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//This does 8 pixels at once
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SSD1306FrameBuffer[(y)+(x*128)] = value;
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SSD1306Changed =1;
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}
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//Warning There are NO checks if it fits or if the array is too big
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void SSD1306_LoadImage(char StartX, char StartY, char ** data, char width,char height)
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{
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if(!I2CHandle)
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return;
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for(uint8_t x =0;x<width;x++)
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{
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for(uint8_t y=0; y<height;y++)
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{
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//We start drawing here
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//This is weird because everything is rotated 90*
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SSD1306_SetPixel(x+StartX,y+StartY,data[x][y]);
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}
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}
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}
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void SSD1306_Reset()
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{
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if(!I2CHandle)
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return;
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}
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void SSD1306_SetContrast(char contrast)
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{
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if(!I2CHandle)
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return;
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SSD1306_WriteCMD(0x81);
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SSD1306_WriteCMD(contrast);
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}
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void SSD1306_SetDisplayOn(char OnOff)
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{
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if(!I2CHandle)
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return;
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if(OnOff)
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{
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SSD1306_WriteCMD(0xAF);
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}
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else
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SSD1306_WriteCMD(0xAE);
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}
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void SSD1306_Clear()
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{
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if(!I2CHandle)
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return;
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for(int i =0; i< SSD1306BUFFERSIZE; i++)
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{
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SSD1306FrameBuffer[i] = 0;
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}
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SSD1306Changed =1;
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}
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uint8_t Font6x8[] = {
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x4,0x4,0x4,0x4,0x4,0x0,0x4,0x0,
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0xa,0xa,0xa,0x0,0x0,0x0,0x0,0x0,
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0xa,0xa,0x1f,0xa,0x1f,0xa,0xa,0x0,
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0x4,0x1e,0x5,0xe,0x14,0xf,0x4,0x0,
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0x3,0x13,0x8,0x4,0x2,0x19,0x18,0x0,
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0x2,0x5,0x5,0x2,0x15,0x9,0x16,0x0,
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0xc,0xc,0x4,0x2,0x0,0x0,0x0,0x0,
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0x8,0x4,0x2,0x2,0x2,0x4,0x8,0x0,
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0x2,0x4,0x8,0x8,0x8,0x4,0x2,0x0,
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0x4,0x15,0xe,0x1f,0xe,0x15,0x4,0x0,
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0x0,0x4,0x4,0x1f,0x4,0x4,0x0,0x0,
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0x0,0x0,0x0,0x0,0xc,0xc,0x4,0x0,
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0x0,0x0,0x0,0x1f,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0xc,0xc,0x0,
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0x0,0x10,0x8,0x4,0x2,0x1,0x0,0x0,
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0xe,0x11,0x19,0x15,0x13,0x11,0xe,0x0,
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0x4,0x6,0x4,0x4,0x4,0x4,0xe,0x0,
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0xe,0x11,0x10,0xe,0x1,0x1,0x1f,0x0,
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0x1f,0x10,0x8,0xc,0x10,0x11,0xe,0x0,
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0x8,0xc,0xa,0x9,0x1f,0x8,0x8,0x0,
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0x1f,0x1,0xf,0x10,0x10,0x11,0xe,0x0,
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0x1c,0x2,0x1,0xf,0x11,0x11,0xe,0x0,
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0x1f,0x10,0x10,0x8,0x4,0x2,0x1,0x0,
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0xe,0x11,0x11,0xe,0x11,0x11,0xe,0x0,
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0xe,0x11,0x11,0x1e,0x10,0x8,0x7,0x0,
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0x0,0x0,0x4,0x0,0x4,0x0,0x0,0x0,
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0x0,0x0,0x4,0x0,0x4,0x4,0x2,0x0,
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0x10,0x8,0x4,0x2,0x4,0x8,0x10,0x0,
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0x0,0x0,0x1f,0x0,0x1f,0x0,0x0,0x0,
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0x2,0x4,0x8,0x10,0x8,0x4,0x2,0x0,
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0xe,0x11,0x10,0xc,0x4,0x0,0x4,0x0,
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0xe,0x11,0x15,0x1d,0xd,0x1,0x1e,0x0,
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0x4,0xa,0x11,0x11,0x1f,0x11,0x11,0x0,
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0xf,0x11,0x11,0xf,0x11,0x11,0xf,0x0,
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0xe,0x11,0x1,0x1,0x1,0x11,0xe,0x0,
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0xf,0x11,0x11,0x11,0x11,0x11,0xf,0x0,
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0x1f,0x1,0x1,0xf,0x1,0x1,0x1f,0x0,
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0x1f,0x1,0x1,0xf,0x1,0x1,0x1,0x0,
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0x1e,0x11,0x1,0x1,0x19,0x11,0x1e,0x0,
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0x11,0x11,0x11,0x1f,0x11,0x11,0x11,0x0,
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0xe,0x4,0x4,0x4,0x4,0x4,0xe,0x0,
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0x1c,0x8,0x8,0x8,0x8,0x9,0x6,0x0,
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0x11,0x9,0x5,0x3,0x5,0x9,0x11,0x0,
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0x1,0x1,0x1,0x1,0x1,0x1,0x1f,0x0,
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0x11,0x1b,0x15,0x15,0x15,0x11,0x11,0x0,
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0x11,0x11,0x13,0x15,0x19,0x11,0x11,0x0,
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0xe,0x11,0x11,0x11,0x11,0x11,0xe,0x0,
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0xf,0x11,0x11,0xf,0x1,0x1,0x1,0x0,
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0xe,0x11,0x11,0x11,0x15,0x9,0x16,0x0,
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0xf,0x11,0x11,0xf,0x5,0x9,0x11,0x0,
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0xe,0x11,0x1,0xe,0x10,0x11,0xe,0x0,
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0x1f,0x15,0x4,0x4,0x4,0x4,0x4,0x0,
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0x11,0x11,0x11,0x11,0x11,0x11,0xe,0x0,
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0x11,0x11,0x11,0x11,0x11,0xa,0x4,0x0,
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0x11,0x11,0x11,0x15,0x15,0x15,0xa,0x0,
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0x11,0x11,0xa,0x4,0xa,0x11,0x11,0x0,
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0x11,0x11,0xa,0x4,0x4,0x4,0x4,0x0,
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0x1f,0x10,0x8,0xe,0x2,0x1,0x1f,0x0,
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0x1e,0x2,0x2,0x2,0x2,0x2,0x1e,0x0,
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0x0,0x1,0x2,0x4,0x8,0x10,0x0,0x0,
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0x1e,0x10,0x10,0x10,0x10,0x10,0x1e,0x0,
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0x4,0xa,0x11,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x1f,0x0,
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0x6,0x6,0x4,0x8,0x0,0x0,0x0,0x0,
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0x0,0x0,0x6,0x8,0xe,0x9,0x1e,0x0,
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0x1,0x1,0xd,0x13,0x11,0x13,0xd,0x0,
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0x0,0x0,0xe,0x11,0x1,0x11,0xe,0x0,
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0x10,0x10,0x16,0x19,0x11,0x19,0x16,0x0,
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0x0,0x0,0xe,0x11,0x1f,0x1,0xe,0x0,
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0x8,0x14,0x4,0xe,0x4,0x4,0x4,0x0,
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0x0,0x0,0xe,0x19,0x19,0x16,0x10,0x0,
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0x1,0x1,0xd,0x13,0x11,0x11,0x11,0x0,
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0x4,0x0,0x6,0x4,0x4,0x4,0xe,0x0,
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0x8,0x0,0x8,0x8,0x8,0x9,0x6,0x0,
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0x1,0x1,0x9,0x5,0x3,0x5,0x9,0x0,
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0x6,0x4,0x4,0x4,0x4,0x4,0xe,0x0,
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0x0,0x0,0xb,0x15,0x15,0x15,0x15,0x0,
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0x0,0x0,0xd,0x13,0x11,0x11,0x11,0x0,
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0x0,0x0,0xe,0x11,0x11,0x11,0xe,0x0,
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0x0,0x0,0xd,0x13,0x13,0xd,0x1,0x0,
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0x0,0x0,0x16,0x19,0x19,0x16,0x10,0x0,
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0x0,0x0,0xd,0x13,0x1,0x1,0x1,0x0,
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0x0,0x0,0x1e,0x1,0xe,0x10,0xf,0x0,
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0x4,0x4,0x1f,0x4,0x4,0x14,0x8,0x0,
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0x0,0x0,0x11,0x11,0x11,0x19,0x16,0x0,
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0x0,0x0,0x11,0x11,0x11,0xa,0x4,0x0,
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0x0,0x0,0x11,0x11,0x15,0x15,0xa,0x0,
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0x0,0x0,0x11,0xa,0x4,0xa,0x11,0x0,
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0x0,0x0,0x11,0x11,0x1e,0x10,0x11,0x0,
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0x0,0x0,0x1f,0x8,0x4,0x2,0x1f,0x0,
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0x8,0x4,0x4,0x2,0x4,0x4,0x8,0x0,
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0x4,0x4,0x4,0x0,0x4,0x4,0x4,0x0,
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0x2,0x4,0x4,0x8,0x4,0x4,0x2,0x0,
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0x2,0x15,0x8,0x0,0x0,0x0,0x0,0x0
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}; |