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master ... I2C

3 changed files with 332 additions and 0 deletions

13
Oled_I2C[1].ino Normal file
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#include "head_oled_i2c.h"
void setup() {
initialization();
Fill(255);
update();
Fill(0);
DrawCircle(50, 30, 20, 1, 0);
update();
}
void loop() {
}

79
head_oled_i2c[1].h Normal file
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#ifndef head_oled_i2c
#define head_oled_i2c
#define OLED_HEIGHT_64 0x12
#define OLED_64 0x3F
#define OLED_DISPLAY_OFF 0xAE
#define OLED_DISPLAY_ON 0xAF
#define OLED_COMMAND_MODE 0x00
#define OLED_ONE_COMMAND_MODE 0x80
#define OLED_DATA_MODE 0x40
#define OLED_ADDRESSING_MODE 0x20
#define OLED_VERTICAL 0x01
#define OLED_NORMAL_V 0xC8
#define OLED_NORMAL_H 0xA1
#define OLED_CONTRAST 0x81
#define OLED_SETCOMPINS 0xDA
#define OLED_SETVCOMDETECT 0xDB
#define OLED_CLOCKDIV 0xD5
#define OLED_SETMULTIPLEX 0xA8
#define OLED_COLUMNADDR 0x21
#define OLED_PAGEADDR 0x22
#define OLED_CHARGEPUMP 0x8D
#define OLED_NORMALDISPLAY 0xA6
#define OLED_BUFSIZE (128*64/8)
#define OLED_MAX_X 127
#define OLED_MAX_Y 63
#define OLED_MAX_ROW 7
#define OLED_ADDR 0x3C
#define OLED_I2C_FREQ 100000UL
#ifdef __cplusplus
extern "C" {
#endif
void i2c_begin(uint8_t address);
void i2c_endTransaction();
void i2c_beginTransmission(uint8_t address);
void i2c_write(uint8_t data);
void endTransm();
void sendByteRaw(uint8_t data);
void startTransm();
void beginData();
void sendByte(uint8_t data);
void sendCommand(uint8_t cmd1);
void sendCommandData(uint8_t cmd1, uint8_t cmd2);
uint8_t constrainValue(uint8_t value, uint8_t min, uint8_t max);
void setWindow(int x0, int y0, int x1, int y1);
void beginCommand();
void beginOneCommand();
void initialization();
void setBit(uint8_t *value, uint8_t bitIndex, uint8_t bitValue);
void DrawPixel(uint8_t x, uint8_t y, uint8_t fill);
void DrawLine(uint8_t x1, uint8_t y1, uint8_t x2, uint8_t y2, uint8_t color);
void DrawRect(uint8_t x, uint8_t y, uint8_t width, uint8_t height, uint8_t color, uint8_t fill);
void DrawCircle(uint8_t x0, uint8_t y0, uint8_t radius, uint8_t color, uint8_t fill);
void Fill(uint8_t fill);
void update();
#ifdef __cplusplus
}
#endif
#endif

240
oled_i2c[1].c Normal file
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#include "stdint.h"
#include <avr/io.h>
#include "head_oled_i2c.h"
uint8_t _oled_buffer[OLED_BUFSIZE];
uint8_t _writes = 0;
void i2c_begin(uint8_t address) {
TWBR = ((F_CPU / OLED_I2C_FREQ) - 16) / 2;
TWAR = (address << 1);
}
void i2c_endTransaction() {
TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWSTO);
}
void i2c_beginTransmission(uint8_t address) {
TWCR = (1 << TWINT) | (1 << TWSTA) | (1 << TWEN);
while (!(TWCR & (1 << TWINT)));
TWDR = (address << 1);
TWCR = (1 << TWINT) | (1 << TWEN);
while (!(TWCR & (1 << TWINT)));
}
void i2c_write(uint8_t data) {
TWDR = data; // Запись данных
TWCR = (1 << TWINT) | (1 << TWEN);
while (!(TWCR & (1 << TWINT)));
}
void endTransm() {
i2c_endTransaction();
_writes = 0;
}
void sendByteRaw(uint8_t data) {
i2c_write(data);
}
void startTransm() {
i2c_beginTransmission(OLED_ADDR);
}
void beginCommand() {
startTransm();
sendByteRaw(OLED_COMMAND_MODE);
}
void beginData() {
startTransm();
sendByteRaw(OLED_DATA_MODE);
}
void sendByte(uint8_t data) {
sendByteRaw(data);
_writes++;
if (_writes >= 16) {
endTransm();
beginData();
}
}
void beginOneCommand() {
startTransm();
sendByteRaw(OLED_ONE_COMMAND_MODE);
}
void sendCommand(uint8_t cmd1) {
beginOneCommand();
sendByteRaw(cmd1);
endTransm();
}
void sendCommandData(uint8_t cmd1, uint8_t cmd2) {
beginCommand();
sendByteRaw(cmd1);
sendByteRaw(cmd2);
endTransm();
}
uint8_t constrainValue(uint8_t value, uint8_t min, uint8_t max) {
if (value < min) {
return min;
} else if (value > max) {
return max;
}
return value;
}
void setWindow(int x0, int y0, int x1, int y1) {
beginCommand();
sendByteRaw(OLED_COLUMNADDR);
sendByteRaw(constrainValue(x0, 0, OLED_MAX_X));
sendByteRaw(constrainValue(x1, 0, OLED_MAX_X));
sendByteRaw(OLED_PAGEADDR);
sendByteRaw(constrainValue(y0, 0, OLED_MAX_ROW));
sendByteRaw(constrainValue(y1, 0, OLED_MAX_ROW));
endTransm();
}
void initialization() {
i2c_begin(OLED_ADDR);
beginCommand();
sendByte(OLED_DISPLAY_OFF);
sendByte(OLED_CLOCKDIV);
sendByte(0x80);
sendByte(OLED_CHARGEPUMP);
sendByte(0x14);
sendByte(OLED_ADDRESSING_MODE);
sendByte(OLED_VERTICAL);
sendByte(OLED_NORMAL_H);
sendByte(OLED_NORMAL_V);
sendByte(OLED_CONTRAST);
sendByte(0x7F);
sendByte(OLED_SETVCOMDETECT);
sendByte(0x40);
sendByte(OLED_NORMALDISPLAY);
sendByte(OLED_DISPLAY_ON);
endTransm();
beginCommand();
sendByte(OLED_SETCOMPINS);
sendByte(OLED_HEIGHT_64);
sendByte(OLED_SETMULTIPLEX);
sendByte(OLED_64);
endTransm();
setWindow(0, 0, OLED_MAX_X, OLED_MAX_ROW);
}
void setBit(uint8_t *value, uint8_t bitIndex, uint8_t bitValue) {
if (bitValue != 0) {
*value |= (1 << bitIndex);
} else {
*value &= ~(1 << bitIndex);
}
}
void DrawPixel(uint8_t x, uint8_t y, uint8_t fill) {
if (x < 0 || x > OLED_MAX_X || y < 0 || y > OLED_MAX_Y) return;
uint16_t _bufIndex = ((y) >> 3) + ((x) << (3));
setBit(&_oled_buffer[_bufIndex], y & 0b111, fill);
}
void DrawLine(uint8_t x1, uint8_t y1, uint8_t x2, uint8_t y2, uint8_t color) {
uint8_t dx = abs(x2 - x1);
uint8_t dy = abs(y2 - y1);
uint8_t sx = x1 < x2 ? 1 : -1;
uint8_t sy = y1 < y2 ? 1 : -1;
uint8_t err = dx - dy;
while (1) {
DrawPixel(x1, y1, color);
if (x1 == x2 && y1 == y2) break;
uint8_t e2 = 2 * err;
if (e2 > -dy) {
err -= dy;
x1 += sx;
}
if (e2 < dx) {
err += dx;
y1 += sy;
}
}
}
void DrawRect(uint8_t x, uint8_t y, uint8_t width, uint8_t height, uint8_t color, uint8_t fill) {
if (fill) {
for (uint8_t i = y; i < y + height; i++) {
DrawLine(x, i, x + width - 1, i, color);
}
} else {
for (uint8_t i = x; i < x + width; i++) {
DrawPixel(i, y, color);
DrawPixel(i, y + height - 1, color);
}
for (uint8_t i = y; i < y + height; i++) {
DrawPixel(x, i, color);
DrawPixel(x + width - 1, i, color);
}
}
}
//
void DrawCircle(uint8_t x0, uint8_t y0, uint8_t radius, uint8_t color, uint8_t fill) {
int8_t x = radius;
int8_t y = 0;
int8_t err = 0;
while (x >= y) {
if (fill) {
for (int8_t i = x0 - x; i <= x0 + x; i++) {
DrawPixel(i, y0 + y, color);
DrawPixel(i, y0 - y, color);
}
for (int8_t i = x0 - y; i <= x0 + y; i++) {
DrawPixel(i, y0 + x, color);
DrawPixel(i, y0 - x, color);
}
} else {
DrawPixel(x0 + x, y0 + y, color);
DrawPixel(x0 - x, y0 + y, color);
DrawPixel(x0 + x, y0 - y, color);
DrawPixel(x0 - x, y0 - y, color);
DrawPixel(x0 + y, y0 + x, color);
DrawPixel(x0 - y, y0 + x, color);
DrawPixel(x0 + y, y0 - x, color);
DrawPixel(x0 - y, y0 - x, color);
}
y++;
err += 1 + 2 * y;
if (2 * (err - x) + 1 > 0) {
x--;
err += 1 - 2 * x;
}
}
}
// Заполнить дисплей
void Fill(uint8_t fill) {
memset(_oled_buffer, fill, OLED_BUFSIZE);
}
// Обновить дисплей
void update() {
setWindow(0, 0, OLED_MAX_X, OLED_MAX_ROW);
beginData();
for (int i = 0; i < OLED_BUFSIZE; i++) sendByte(_oled_buffer[i]);
endTransm();
}