jun imamura / st7565LCD Featured

This is test library which translated from code for arduino. Original code, and their product can be found in the link below. http://www.adafruit.com/products/250

Dependents:   CH12864F-SPI2_Test

ST7565 LCD

!This is the test library.!

I translated arduino code to mbed. You can find the product and datasheet from the following link.

http://www.adafruit.com/products/250

void begin(uint8_t contrast);

  • Initialize data with Adafruit Logo.
  • contrast is needed

void clear_display(void);

  • Clears only display data. RAM data kept remained.

void clear();

  • Clears display data and RAM data.

void display();

  • Update display with RAM data.

void setpixel(uint8_t x, uint8_t y, uint8_t color);

  • Set a dot at (x, y)

void fillcircle(uint8_t x0, uint8_t y0, uint8_t r, uint8_t color);

  • Draw a filled circle with its center coordinate (x0, y0) and radius r.

void fillrect(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint8_t color);

  • Draw a filled rectangular with its top-left coordinate (x, y) and its width (w) and height (h).

void drawcircle(uint8_t x0, uint8_t y0, uint8_t r, uint8_t color);

  • Draw a circle with its center coordinate (x0, y0) and radius r.

void drawrect(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint8_t color);

  • Draw a rectangular with its top-left coordinate (x, y) and its width (w) and height (h).

void drawline(uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1, uint8_t color);

  • Draw a line starts from (x0, y0) to (x1, y1)

void drawchar(uint8_t x, uint8_t line, char c);

  • Set a character

void drawstring(uint8_t x, uint8_t line, char *c);

  • Set string

Example code for main.cpp:

#include "mbed.h"
#include "st7565LCD.h"


ST7565 st7565(p11, p13, p21, p22, p23); // mosi, sclk, cs, rst, a0
int main()
{
//0x18 defines cntrast
    st7565.begin(0x18);
//show initial data (Adafruit logo)
    st7565.display();
    wait(1.0);
//Clear all data
    st7565.clear();
//test code
        st7565.drawstring(1,1,"test");
//update RAM data
        st7565.display();
    while(1) {
    }
}

Diff: st7565LCD.h

Revision:
0:f2eba6cbd093
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/st7565LCD.h	Tue Mar 18 09:26:16 2014 +0000
@@ -0,0 +1,125 @@
+/*
+$Id:$
+
+ST7565 LCD library!
+
+Copyright (C) 2010 Limor Fried, Adafruit Industries
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+// some of this code was written by <cstone@pobox.com> originally; it is in the public domain.
+*/
+
+
+#ifndef _st7565LCD_H_
+#define _st7565LCD_H_
+
+#include "mbed.h"
+
+#define swap(a, b) { uint8_t t = a; a = b; b = t; }
+
+#define BLACK 1
+#define WHITE 0
+
+#define LCDWIDTH 128
+#define LCDHEIGHT 64
+
+#define INITIAL_CONTRAST 0x18
+
+#define CMD_DISPLAY_OFF   0xAE
+#define CMD_DISPLAY_ON    0xAF
+
+#define CMD_SET_DISP_START_LINE  0x40
+#define CMD_SET_PAGE  0xB0
+
+#define CMD_SET_COLUMN_UPPER  0x10
+#define CMD_SET_COLUMN_LOWER  0x00
+
+#define CMD_SET_ADC_NORMAL  0xA0
+#define CMD_SET_ADC_REVERSE 0xA1
+
+#define CMD_SET_DISP_NORMAL 0xA6
+#define CMD_SET_DISP_REVERSE 0xA7
+
+#define CMD_SET_ALLPTS_NORMAL 0xA4
+#define CMD_SET_ALLPTS_ON  0xA5
+#define CMD_SET_BIAS_9 0xA2 
+#define CMD_SET_BIAS_7 0xA3
+
+#define CMD_RMW  0xE0
+#define CMD_RMW_CLEAR 0xEE
+#define CMD_INTERNAL_RESET  0xE2
+#define CMD_SET_COM_NORMAL  0xC0
+#define CMD_SET_COM_REVERSE  0xC8
+#define CMD_SET_POWER_CONTROL  0x28
+#define CMD_SET_RESISTOR_RATIO  0x20
+#define CMD_SET_VOLUME_FIRST  0x81
+#define  CMD_SET_VOLUME_SECOND  0x00
+#define CMD_SET_STATIC_OFF  0xAC
+#define  CMD_SET_STATIC_ON  0xAD
+#define CMD_SET_STATIC_REG  0x0
+#define CMD_SET_BOOSTER_FIRST  0xF8
+#define CMD_SET_BOOSTER_234  0
+#define  CMD_SET_BOOSTER_5  1
+#define  CMD_SET_BOOSTER_6  3
+#define CMD_NOP  0xE3
+#define CMD_TEST  0xF0
+
+class ST7565 {
+     
+ private:
+  SPI _spi;
+  DigitalOut _cs;
+  DigitalOut _rst;
+  DigitalOut _a0;
+  void spiwrite(uint8_t c);
+  void my_setpixel(uint8_t x, uint8_t y, uint8_t color);
+
+  //uint8_t buffer[128*64/8]; 
+ public:
+  ST7565(PinName mosi, PinName sclk, PinName cs, PinName rst, PinName a0);
+  ~ST7565() {};
+  void st7565_init(void);
+  void begin(uint8_t contrast);
+  void st7565_command(uint8_t c);
+  void st7565_data(uint8_t c);
+  void st7565_set_brightness(uint8_t val);
+  void clear_display(void);
+  void clear();
+  void display();
+
+  void setpixel(uint8_t x, uint8_t y, uint8_t color);
+  uint8_t getpixel(uint8_t x, uint8_t y);
+  void fillcircle(uint8_t x0, uint8_t y0, uint8_t r, 
+          uint8_t color);
+  void drawcircle(uint8_t x0, uint8_t y0, uint8_t r, 
+          uint8_t color);
+  void drawrect(uint8_t x, uint8_t y, uint8_t w, uint8_t h, 
+        uint8_t color);
+  void fillrect(uint8_t x, uint8_t y, uint8_t w, uint8_t h, 
+        uint8_t color);
+  void drawline(uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1, 
+        uint8_t color);
+  void drawchar(uint8_t x, uint8_t line, char c);
+  void drawstring(uint8_t x, uint8_t line, char *c);
+  /*void drawbitmap(uint8_t x, uint8_t y, 
+          const uint8_t *bitmap, uint8_t w, uint8_t h,
+          uint8_t color);*/
+  uint8_t _BV(uint8_t bit);
+  uint8_t _nBV(uint8_t bit);
+
+};
+
+#endif
\ No newline at end of file