Fork of the UniGraphic-Library for monochrome LCDs with ST7920 controller and 128x64-IIC-OLED-Display with SH1106-Controller

Diff: Display/LCD.cpp

Revision:

0:75ec1b3cde17

Child:

1:ff019d22b275

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Display/LCD.cpp	Thu Feb 12 22:22:47 2015 +0000
@@ -0,0 +1,217 @@
+#include "LCD.h"
+
+//#include "mbed_debug.h"
+//#define LCDPAGES        (LCDSIZE_Y>>3) // 8raws per page
+//#define IC_PAGES        (IC_Y_COMS>>3) // max pages in IC ddram, 8raws per page
+#define SWAP(a, b)  { a ^= b; b ^= a; a ^= b; }
+#define USEFRAMEBUFFER
+//#define FRAMEBUFSIZE    (LCDSIZE_X*LCDPAGES)
+Protocols* proto;
+
+LCD::LCD(proto_t displayproto, PortName port, PinName CS, PinName reset, PinName DC, PinName WR, PinName RD, const int lcdsize_x, const int lcdsize_y, const int ic_x_segs, const int ic_y_coms, const char *name)
+    : /*PAR8(port, CS, reset, DC, WR, RD),*/ GraphicsDisplay(name), LCDSIZE_X(lcdsize_x), LCDSIZE_Y(lcdsize_y), LCDPAGES(lcdsize_y>>3), IC_X_SEGS(ic_x_segs), IC_Y_COMS(ic_y_coms), IC_PAGES(ic_y_coms>>3)
+{
+ //   LCDPAGES = LCDSIZE_Y>>3;
+ //   IC_PAGES = IC_Y_COMS>>3;
+  //  buffer = new unsigned char [LCDSIZE_X*LCDPAGES];
+  //  PAR8 par8proto(port, CS, reset, DC, WR, RD);
+    if(displayproto==PAR_8) proto = new PAR8(port, CS, reset, DC, WR, RD);
+    buffer = (unsigned char*) malloc (LCDSIZE_X*LCDPAGES);
+    draw_mode = NORMAL;
+    set_orientation(1);
+  //  cls();
+  //  locate(0,0);
+}
+LCD::LCD(proto_t displayproto,PinName mosi, PinName miso, PinName sclk, PinName CS, PinName reset, PinName DC, const int lcdsize_x, const int lcdsize_y, const int ic_x_segs, const int ic_y_coms, const char *name)
+    : GraphicsDisplay(name), LCDSIZE_X(lcdsize_x), LCDSIZE_Y(lcdsize_y), LCDPAGES(lcdsize_y>>3), IC_X_SEGS(ic_x_segs), IC_Y_COMS(ic_y_coms), IC_PAGES(ic_y_coms>>3)
+{
+ //   LCDPAGES = LCDSIZE_Y>>3;
+ //   IC_PAGES = IC_Y_COMS>>3;
+  //  buffer = new unsigned char [LCDSIZE_X*LCDPAGES];
+  //  PAR8 par8proto(port, CS, reset, DC, WR, RD);
+    if(displayproto==SPI_8) proto = new SPI8(mosi, miso, sclk, CS, reset, DC);
+    buffer = (unsigned char*) malloc (LCDSIZE_X*LCDPAGES);
+    draw_mode = NORMAL;
+  //  cls();
+    set_orientation(1);
+  //  locate(0,0);
+}
+LCD::~LCD()
+{
+    free(buffer);
+}
+
+void LCD::wr_cmd(unsigned char cmd)
+    {
+        proto->wr_cmd(cmd);
+    }
+void LCD::wr_data8(unsigned char data8)
+    {
+        proto->wr_data8(data8);
+    }
+void LCD::wr_data8(unsigned char data8, unsigned int count)
+    {
+        proto->wr_data8(data8, count);
+    }
+void LCD::wr_data8buf(unsigned char* data8, unsigned int lenght)
+    {
+        proto->wr_data8buf(data8, lenght);
+    }
+void LCD::hw_reset()
+    {
+        proto->hw_reset();
+    }
+void LCD::BusEnable(bool enable)
+    {
+        proto->BusEnable(enable);
+    }
+
+
+
+// monochrome LCD driver ICs does not have ram rotate in hw (swap raw<->columns) like TFT displays
+// for portrait views, XY swap will be done in sw in pixel() function
+void LCD::set_orientation(int o)
+{
+    orientation = o;
+    switch (o) {
+        case (0):// portrait view -90°
+            mirrorXY(Y);
+            col_offset = 0;
+            page_offset = IC_PAGES-LCDPAGES;
+            set_width(LCDSIZE_Y);
+            set_height(LCDSIZE_X);
+        //    portrait = true;
+            break;
+        case (1): // default, landscape view 0°
+            mirrorXY(NONE);
+            col_offset = 0;
+            page_offset = 0;
+            set_width(LCDSIZE_X);
+            set_height(LCDSIZE_Y);
+       //     portrait = false;
+            break;
+        case (2):// portrait view +90°
+            mirrorXY(X);
+            col_offset = IC_X_SEGS-LCDSIZE_X; // some displays have less pixels than IC ram
+            page_offset = 0;
+            set_width(LCDSIZE_Y);
+            set_height(LCDSIZE_X);
+       //     portrait = true;
+            break;
+        case (3):// landscape view +180°
+            mirrorXY(XY);
+            col_offset = IC_X_SEGS-LCDSIZE_X;
+            page_offset = IC_PAGES-LCDPAGES;
+            set_width(LCDSIZE_X);
+            set_height(LCDSIZE_Y);
+       //     portrait = false;
+            break;
+    }
+}
+void LCD::mirrorXY(mirror_t mode)
+{
+    switch (mode)
+    {
+        case(NONE):
+            wr_cmd(0xA0);
+            wr_cmd(0xC8); // this is in real Y mirror command, but seems most displays have COMs wired inverted, so assume this is the default no-y-mirror
+            break;
+        case(X):
+            wr_cmd(0xA1);
+            wr_cmd(0xC8);
+            break;
+        case(Y):
+            wr_cmd(0xA0);
+            wr_cmd(0xC0);
+            break;
+        case(XY):
+            wr_cmd(0xA1);
+            wr_cmd(0xC0);
+            break;
+    }
+}
+void LCD::invert(unsigned char o)
+{
+    if(o == 0) wr_cmd(0xA6);
+    else wr_cmd(0xA7);
+}
+
+void LCD::set_contrast(int o)
+{
+    contrast = o;
+    wr_cmd(0x81);      //  set volume
+    wr_cmd(o & 0x3F);
+}
+void LCD::set_auto_up(bool up)
+{
+    if(up) auto_up = true;
+    else auto_up = false;
+}
+bool LCD::get_auto_up(void)
+{
+    return (auto_up);
+}
+int LCD::get_contrast(void)
+{
+    return(contrast);
+}
+void LCD::window(int x, int y, int w, int h) {
+    // current pixel location
+    cur_x = x;
+    cur_y = y;
+    // window settings
+    win_x1 = x;
+    win_x2 = x + w - 1;
+    win_y1 = y;
+    win_y2 = y + h - 1;
+}
+void LCD::window_pushpixel(unsigned short color) {
+    pixel(cur_x, cur_y, color);
+    cur_x++;
+    if(cur_x > win_x2) {
+        cur_x = win_x1;
+        cur_y++;
+        if(cur_y > win_y2) {
+            cur_y = win_y1;
+        }
+    }
+}
+void LCD::pixel(int x, int y, unsigned short color)
+{
+    if(!(orientation&1)) SWAP(x,y);
+    // first check parameter
+    if((x >= LCDSIZE_X) || (y >= LCDSIZE_Y)) return;
+
+//    if(draw_mode == NORMAL)
+//    {
+        if(color == 0) buffer[x + ((y>>3) * LCDSIZE_X)] &= ~(1 << (y&7));  // erase pixel
+        else buffer[x + ((y>>3) * LCDSIZE_X)] |= (1 << (y&7));   // set pixel
+//    }
+//    else
+//    { // XOR mode
+//        if(color == 1) buffer[x + ((y>>3) * LCDSIZE_X)] ^= (1 << (y&7));   // xor pixel
+//    }
+}
+void LCD::copy_to_lcd(void)
+{
+    unsigned short i=0;
+    for(int page=0; page<LCDPAGES; page++)
+    {
+        wr_cmd((unsigned char)col_offset&0xF);              // set column low nibble
+        wr_cmd(0x10|(col_offset>>4));      // set column hi  nibble
+        wr_cmd(0xB0|(page+page_offset));      // set page
+        wr_data8buf(buffer+i, LCDSIZE_X);   // send whole page pixels
+        i+=LCDSIZE_X;
+    }
+}
+void LCD::cls(void)
+{
+    memset(buffer,0x00,LCDSIZE_X*LCDPAGES);  // clear display buffer
+    for(int page=0; page<LCDPAGES; page++)
+    {
+        wr_cmd((unsigned char)col_offset&0xF);              // set column low nibble
+        wr_cmd(0x10|(col_offset>>4));      // set column hi  nibble
+        wr_cmd(0xB0|(page+page_offset));      // set page
+        wr_data8(0, LCDSIZE_X);   // send whole page pixels =0
+    }
+}
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