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Bracciale Slave

Adafruit_SSD1306.h@19:e5d8d6e7fac5, 2019-02-25 (annotated)

Committer:
gandhi4
Date:
Mon Feb 25 21:14:16 2019 +0000
Revision:
19:e5d8d6e7fac5
Parent:
18:a267f00528be 
a

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nkhorman 0:c3dcd4c4983a 1 #ifndef _ADAFRUIT_SSD1306_H_
nkhorman 0:c3dcd4c4983a 2 #define _ADAFRUIT_SSD1306_H_
nkhorman 0:c3dcd4c4983a 3
nkhorman 0:c3dcd4c4983a 4 #include "mbed.h"
nkhorman 0:c3dcd4c4983a 5 #include "Adafruit_GFX.h"
nkhorman 0:c3dcd4c4983a 6
nkhorman 9:ddb97c9850a2 7 #include <vector>
nkhorman 9:ddb97c9850a2 8 #include <algorithm>
nkhorman 0:c3dcd4c4983a 9
nkhorman 0:c3dcd4c4983a 10 #define SSD1306_EXTERNALVCC 0x1
nkhorman 0:c3dcd4c4983a 11 #define SSD1306_SWITCHCAPVCC 0x2
nkhorman 0:c3dcd4c4983a 12
nkhorman 0:c3dcd4c4983a 13 class Adafruit_SSD1306 : public Adafruit_GFX
nkhorman 0:c3dcd4c4983a 14 {
nkhorman 9:ddb97c9850a2 15 public:
switches 18:a267f00528be 16 Adafruit_SSD1306(uint8_t rawHeight = 32, uint8_t rawWidth = 128)
nkhorman 9:ddb97c9850a2 17 : Adafruit_GFX(rawWidth,rawHeight)
nkhorman 11:86909e6db3c8 18 {
nkhorman 11:86909e6db3c8 19 buffer.resize(rawHeight * rawWidth / 8);
nkhorman 11:86909e6db3c8 20 };
nkhorman 9:ddb97c9850a2 21
nkhorman 9:ddb97c9850a2 22 void begin(uint8_t switchvcc = SSD1306_SWITCHCAPVCC);
nkhorman 11:86909e6db3c8 23
nkhorman 11:86909e6db3c8 24 // These must be implemented in the derived transport driver
nkhorman 9:ddb97c9850a2 25 virtual void command(uint8_t c) = 0;
nkhorman 9:ddb97c9850a2 26 virtual void data(uint8_t c) = 0;
nkhorman 11:86909e6db3c8 27 virtual void drawPixel(int16_t x, int16_t y, uint16_t color);
nkhorman 11:86909e6db3c8 28
nkhorman 11:86909e6db3c8 29 /// Clear the display buffer
nkhorman 9:ddb97c9850a2 30 void clearDisplay(void);
nkhorman 9:ddb97c9850a2 31 virtual void invertDisplay(bool i);
nkhorman 11:86909e6db3c8 32
nkhorman 11:86909e6db3c8 33 /// Cause the display to be updated with the buffer content.
nkhorman 9:ddb97c9850a2 34 void display();
nkhorman 9:ddb97c9850a2 35
nkhorman 9:ddb97c9850a2 36 protected:
nkhorman 9:ddb97c9850a2 37 virtual void sendDisplayBuffer() = 0;
nkhorman 9:ddb97c9850a2 38
nkhorman 9:ddb97c9850a2 39 // the memory buffer for the LCD
nkhorman 9:ddb97c9850a2 40 std::vector<uint8_t> buffer;
nkhorman 9:ddb97c9850a2 41 };
nkhorman 9:ddb97c9850a2 42
nkhorman 11:86909e6db3c8 43
gandhi4 19:e5d8d6e7fac5 44 // This is the I2C SSD1306 display driver transport class
gandhi4 19:e5d8d6e7fac5 45
nkhorman 9:ddb97c9850a2 46 class Adafruit_SSD1306_I2c : public Adafruit_SSD1306
nkhorman 9:ddb97c9850a2 47 {
nkhorman 9:ddb97c9850a2 48 public:
nkhorman 9:ddb97c9850a2 49 #define SSD_I2C_ADDRESS 0x78
nkhorman 11:86909e6db3c8 50 /** Create a SSD1306 I2C transport display driver instance with the specified RST pin name, the I2C address, as well as the display dimensions
nkhorman 11:86909e6db3c8 51 *
nkhorman 11:86909e6db3c8 52 * Required parameters
nkhorman 11:86909e6db3c8 53 * @param i2c - A reference to an initialized I2C object
nkhorman 11:86909e6db3c8 54 * @param RST - The Reset pin name
nkhorman 11:86909e6db3c8 55 *
nkhorman 11:86909e6db3c8 56 * Optional parameters
nkhorman 11:86909e6db3c8 57 * @param i2cAddress - The i2c address of the display
nkhorman 11:86909e6db3c8 58 * @param rawHeight - The vertical number of pixels for the display, defaults to 32
nkhorman 11:86909e6db3c8 59 * @param rawWidth - The horizonal number of pixels for the display, defaults to 128
nkhorman 11:86909e6db3c8 60 */
switches 18:a267f00528be 61 Adafruit_SSD1306_I2c(I2C &i2c, uint8_t i2cAddress = SSD_I2C_ADDRESS, uint8_t rawHeight = 32, uint8_t rawWidth = 128)
switches 18:a267f00528be 62 : Adafruit_SSD1306(rawHeight, rawWidth)
nkhorman 9:ddb97c9850a2 63 , mi2c(i2c)
nkhorman 9:ddb97c9850a2 64 , mi2cAddress(i2cAddress)
nkhorman 9:ddb97c9850a2 65 {
nkhorman 9:ddb97c9850a2 66 begin();
nkhorman 9:ddb97c9850a2 67 display();
nkhorman 9:ddb97c9850a2 68 };
nkhorman 9:ddb97c9850a2 69
nkhorman 9:ddb97c9850a2 70 virtual void command(uint8_t c)
nkhorman 9:ddb97c9850a2 71 {
nkhorman 9:ddb97c9850a2 72 char buff[2];
nkhorman 9:ddb97c9850a2 73 buff[0] = 0; // Command Mode
nkhorman 9:ddb97c9850a2 74 buff[1] = c;
nkhorman 9:ddb97c9850a2 75 mi2c.write(mi2cAddress, buff, sizeof(buff));
nkhorman 9:ddb97c9850a2 76 }
nkhorman 9:ddb97c9850a2 77
nkhorman 9:ddb97c9850a2 78 virtual void data(uint8_t c)
nkhorman 9:ddb97c9850a2 79 {
nkhorman 9:ddb97c9850a2 80 char buff[2];
nkhorman 9:ddb97c9850a2 81 buff[0] = 0x40; // Data Mode
nkhorman 9:ddb97c9850a2 82 buff[1] = c;
nkhorman 9:ddb97c9850a2 83 mi2c.write(mi2cAddress, buff, sizeof(buff));
nkhorman 9:ddb97c9850a2 84 };
nkhorman 9:ddb97c9850a2 85
nkhorman 9:ddb97c9850a2 86 protected:
nkhorman 9:ddb97c9850a2 87 virtual void sendDisplayBuffer()
nkhorman 9:ddb97c9850a2 88 {
nkhorman 9:ddb97c9850a2 89 char buff[17];
nkhorman 9:ddb97c9850a2 90 buff[0] = 0x40; // Data Mode
nkhorman 9:ddb97c9850a2 91
nkhorman 9:ddb97c9850a2 92 // send display buffer in 16 byte chunks
nkhorman 9:ddb97c9850a2 93 for(uint16_t i=0, q=buffer.size(); i<q; i+=16 )
nkhorman 9:ddb97c9850a2 94 { uint8_t x ;
nkhorman 9:ddb97c9850a2 95
nkhorman 9:ddb97c9850a2 96 // TODO - this will segfault if buffer.size() % 16 != 0
nkhorman 9:ddb97c9850a2 97 for(x=1; x<sizeof(buff); x++)
JojoS 15:77feec1c0684 98 buff[x] = buffer[i+x-1];
nkhorman 9:ddb97c9850a2 99 mi2c.write(mi2cAddress, buff, sizeof(buff));
nkhorman 9:ddb97c9850a2 100 }
nkhorman 9:ddb97c9850a2 101 };
nkhorman 9:ddb97c9850a2 102
nkhorman 9:ddb97c9850a2 103 I2C &mi2c;
nkhorman 9:ddb97c9850a2 104 uint8_t mi2cAddress;
nkhorman 0:c3dcd4c4983a 105 };
nkhorman 0:c3dcd4c4983a 106
nkhorman 0:c3dcd4c4983a 107 #endif