Poushen Ou
a partial porting OLED_I2C library
Dependents: ou_mbed_oled ou_mbed_tmp102
Diff: oled_i2c.cpp
- Revision:
- 0:b5cb0f340c1a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/oled_i2c.cpp Mon Jun 18 11:30:39 2018 +0000
@@ -0,0 +1,321 @@
+#include "oled_i2c.h"
+
+oled_i2c::oled_i2c(I2C &i2c_obj, char address)
+ : i2c(i2c_obj), adr(address), epm_p(new eeprom(i2c, address)), epm(*epm_p)
+{
+ init();
+}
+
+oled_i2c::~oled_i2c()
+{
+ if(NULL!=epm_p)
+ delete epm_p;
+}
+
+void oled_i2c::init(void)
+{
+}
+
+void oled_i2c::comm_out(uint8_t a)
+{
+ epm.byte_write(SSD1306_COMMAND, ONE_BYTE_ADDRESS, a);
+}
+
+void oled_i2c::comm_page_out(uint8_t* pPage, uint8_t size)
+{
+ epm.page_write(SSD1306_COMMAND, ONE_BYTE_ADDRESS, pPage, size);
+}
+
+void oled_i2c::data_out(uint8_t a)
+{
+ epm.byte_write(SSD1306_DATA_CONTINUE, ONE_BYTE_ADDRESS, a);
+}
+
+void oled_i2c::data_page_out(uint8_t* pPage, uint8_t size)
+{
+ epm.page_write(SSD1306_DATA_CONTINUE, ONE_BYTE_ADDRESS, pPage, size);
+}
+
+void oled_i2c::init_oled(void)
+{
+ uint8_t comm[33] = {0, 0, 0, SSD1306_DISPLAY_OFF,
+ SSD1306_SET_DISPLAY_CLOCK_DIV_RATIO,
+ 0x80,
+ SSD1306_SET_MULTIPLEX_RATIO,
+ 0x3F,
+ SSD1306_SET_DISPLAY_OFFSET,
+ 0x00,
+ SSD1306_SET_START_LINE,
+ SSD1306_CHARGE_PUMP,
+ 0x14,
+ SSD1306_MEMORY_ADDR_MODE,
+ 0x00, // Horizontal Addressing Mode
+ // --------
+ 0x21, // Set Column Address
+ 0x00, //28
+ 127,
+ 0x22, // Set Page Address
+ 0,
+ 7,
+ // --------
+ SSD1306_SET_SEGMENT_REMAP | 0x1,
+ SSD1306_COM_SCAN_DIR_DEC,
+ SSD1306_SET_COM_PINS,
+ 0x12,
+// 0xAD,
+// 0x30,
+ SSD1306_SET_CONTRAST_CONTROL,
+ 0xCF,
+ SSD1306_SET_PRECHARGE_PERIOD,
+ 0xF1,
+ SSD1306_SET_VCOM_DESELECT,
+ 0x40,
+ SSD1306_DISPLAY_ALL_ON_RESUME,
+ SSD1306_NORMAL_DISPLAY,};
+ comm_page_out(comm, 30);
+
+ for(int i=0; i<8; i++) {
+ uint8_t data[6] = {0, 0, 0, 0xb0+i, 0x00, 0x00};
+ comm_page_out(data, 3);
+
+ for(int j=0; j<128; j++)
+ data_out(0x00);
+ }
+
+ comm_out(SSD1306_DISPLAY_ON); //Set Display On
+}
+
+void oled_i2c::pixel_on(void)
+{
+ for(int i=0; i<5; i++)
+ {
+ uint8_t data[6] = {0, 0, 0, 0xb2+i, 0x0c, 0x11};
+ comm_page_out(data, 3);
+
+ //data_page_out(&scrbuf[i*SSD1306_WIDTH], 30);
+ //data_page_out(&scrbuf[i*SSD1306_WIDTH + 30], 30);
+ //data_page_out(&scrbuf[i*SSD1306_WIDTH + 60], 12);
+ for (int j=0; j<72; j++) {
+ data_out(scrbuf[i*SSD1306_WIDTH + j]);
+ }
+ }
+}
+
+void oled_i2c::update(void)
+{
+ pixel_on();
+}
+
+void oled_i2c::clrScr()
+{
+ memset(scrbuf, 0, SSD1306_MEM_SIZE);
+}
+
+void oled_i2c::fillScr()
+{
+ memset(scrbuf, 0xFF, SSD1306_MEM_SIZE);
+}
+
+void oled_i2c::setPixel(uint16_t x, uint16_t y)
+{
+ int by, bi;
+
+ if ((x<SSD1306_WIDTH) && (y<SSD1306_LENGTH))
+ {
+ by = ((y/8)*SSD1306_WIDTH) + x;
+ bi = y % 8;
+
+ scrbuf[by] = scrbuf[by] | (1<<bi);
+ }
+}
+
+void oled_i2c::clrPixel(uint16_t x, uint16_t y)
+{
+ int by, bi;
+
+ if ((x<SSD1306_WIDTH) && (y<SSD1306_LENGTH))
+ {
+ by = ((y/8)*SSD1306_WIDTH) + x;
+ bi = y % 8;
+
+ scrbuf[by] = scrbuf[by] & ~(1<<bi);
+ }
+}
+
+void oled_i2c::setFont(const uint8_t* font)
+{
+ cfont.font = font;
+ cfont.x_size = font[0];
+ cfont.y_size = font[1];
+ cfont.offset = font[2];
+ cfont.numchars = font[3];
+}
+
+void oled_i2c::print_char(unsigned char c, int x, int y)
+{
+ if ((cfont.y_size % 8) == 0)
+ {
+ int font_idx = ((c - cfont.offset)*(cfont.x_size * (cfont.y_size/8)))+4;
+ for (int rowcnt=0; rowcnt<(cfont.y_size/8); rowcnt++)
+ {
+ for(int cnt=0; cnt<cfont.x_size; cnt++)
+ {
+ for (int b=0; b<8; b++)
+ if ((cfont.font[font_idx+cnt+(rowcnt*cfont.x_size)] & (1<<b))!=0)
+ //if (cfont.inverted==0)
+ setPixel(x+cnt, y+(rowcnt*8)+b);
+ //else
+ // oled_clrPixel(x+cnt, y+(rowcnt*8)+b);
+ else
+ //if (cfont.inverted==0)
+ clrPixel(x+cnt, y+(rowcnt*8)+b);
+ //else
+ // oled_setPixel(x+cnt, y+(rowcnt*8)+b);
+ }
+ }
+ }
+ else
+ {
+ int font_idx = ((c - cfont.offset)*((cfont.x_size*cfont.y_size/8)))+4;
+ int cbyte=cfont.font[font_idx];
+ int cbit=7;
+ for (int cx=0; cx<cfont.x_size; cx++)
+ {
+ for (int cy=0; cy<cfont.y_size; cy++)
+ {
+ if ((cbyte & (1<<cbit)) != 0)
+ //if (cfont.inverted==0)
+ setPixel(x+cx, y+cy);
+ //else
+ // oled_clrPixel(x+cx, y+cy);
+ else
+ //if (cfont.inverted==0)
+ clrPixel(x+cx, y+cy);
+ //else
+ // oled_setPixel(x+cx, y+cy);
+ cbit--;
+ if (cbit<0)
+ {
+ cbit=7;
+ font_idx++;
+ cbyte=cfont.font[font_idx];
+ }
+ }
+ }
+ }
+}
+
+void oled_i2c::print(char *st, int x, int y)
+{
+ //unsigned char ch;
+ int stl;
+
+ stl = strlen(st);
+ if (x == RIGHT)
+ x = SSD1306_WIDTH - (stl * cfont.x_size);
+ if (x == CENTER)
+ x = (SSD1306_WIDTH - (stl * cfont.x_size))/2;
+
+ for (int cnt=0; cnt<stl; cnt++)
+ print_char(*st++, x + (cnt*(cfont.x_size)), y);
+}
+
+void oled_i2c::printNumI(long num, int x, int y, int length, char filler)
+{
+ char buf[25];
+ char st[27];
+ bool neg=false;
+ int c=0, f=0;
+
+ if (num==0)
+ {
+ if (length!=0)
+ {
+ for (c=0; c<(length-1); c++)
+ st[c]=filler;
+ st[c]=48;
+ st[c+1]=0;
+ }
+ else
+ {
+ st[0]=48;
+ st[1]=0;
+ }
+ }
+ else
+ {
+ if (num<0)
+ {
+ neg=true;
+ num=-num;
+ }
+
+ while (num>0)
+ {
+ buf[c]=48+(num % 10);
+ c++;
+ num=(num-(num % 10))/10;
+ }
+ buf[c]=0;
+
+ if (neg)
+ {
+ st[0]=45;
+ }
+
+ if (length>(c+neg))
+ {
+ for (int i=0; i<(length-c-neg); i++)
+ {
+ st[i+neg]=filler;
+ f++;
+ }
+ }
+
+ for (int i=0; i<c; i++)
+ {
+ st[i+neg+f]=buf[c-i-1];
+ }
+ st[c+neg+f]=0;
+ }
+
+ print(st,x,y);
+}
+
+void oled_i2c::printNumF(double num, uint8_t dec, int x, int y, char divider, int length, char filler)
+{
+ char st[27];
+ bool neg=false;
+
+ if (num<0)
+ neg = true;
+
+ //_convert_float(st, num, length, dec);
+ //ftoa(num, st, dec);
+ sprintf(st, "%.*f", dec, num);
+ if (divider != '.')
+ {
+ for (int i=0; i<sizeof(st); i++)
+ if (st[i]=='.')
+ st[i]=divider;
+ }
+
+ if (filler != ' ')
+ {
+ if (neg)
+ {
+ st[0]='-';
+ for (int i=1; i<sizeof(st); i++)
+ if ((st[i]==' ') || (st[i]=='-'))
+ st[i]=filler;
+ }
+ else
+ {
+ for (int i=0; i<sizeof(st); i++)
+ if (st[i]==' ')
+ st[i]=filler;
+ }
+ }
+
+ print(st,x,y);
+}