Barış Bilgin Şenol
12864 GLCD
Revision 0:c46d8f8adbd7, committed 2019-05-29
- Comitter:
- Bilgin
- Date:
- Wed May 29 18:36:43 2019 +0000
- Commit message:
- Microp
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/GLCD.lib Wed May 29 18:36:43 2019 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/dupuyb/code/GLCD/#e3bff63312e5
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed May 29 18:36:43 2019 +0000
@@ -0,0 +1,55 @@
+#include "mbed.h"
+#include "myLCD.h"
+#include "glcd.h"
+
+DigitalOut myled(LED1);
+PinName DI(PTC7);
+PinName RW(PTC0);
+PinName E(PTC3);
+PinName CS1(PTC10);
+PinName CS2(PTC11);
+DigitalOut RESET(PTC5);
+BusInOut lcdbus(PTA2, PTA1, PTD4, PTA12, PTA4, PTA5, PTC8, PTC9);
+
+int main() {
+ myled = 1;
+ wait(1);
+ GLCD myLCD(DI, RW, E, CS1, CS2, &lcdbus);
+ wait(1);
+ myLCD.reset_pins(0);
+ wait(1);
+ myLCD.init(1);
+ wait(1);
+ myLCD.fillScreen(1);
+ wait(3);
+ myLCD.fillScreen(0);
+ wait(1);
+ while(1){}
+ /**myLCD myLCD(DI, RW, E, CS1, CS2, &lcdbus);
+ RESET = 1;
+ myLCD.lcd_on();
+ myLCD.draw_point(2, 2, 0);
+ myLCD.draw_point(4, 4, 1);
+ while(1){
+ }
+ unsigned short u, v;
+ myled = 1;
+ RESET = 0;
+ wait_us(2);
+ RESET = 1;
+ myLCD.lcd_on();
+ myLCD.clear();
+ myLCD.set_xy(0, 0);
+ while(1) {
+ myled = 1;
+ wait(0.2);
+ myled = 0;
+ wait(0.2);
+ for(u=0; u<64; u+=6)
+ for (v=0; v<128; v+=2)
+ myLCD.draw_point(v, u, 1);
+ wait_ms(1000);
+ myLCD.clear();
+ wait_ms(1000);
+ }*/
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed May 29 18:36:43 2019 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400 \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/myLCD/myLCD.cpp Wed May 29 18:36:43 2019 +0000
@@ -0,0 +1,133 @@
+#include "myLCD.h"
+/**
+myLCD::myLCD(PinName _DI, PinName _RW, PinName _EN, PinName _CS1, PinName _CS2, BusInOut *BUSLCD){
+ DI = new DigitalOut(_DI);
+ RW = new DigitalOut(_RW);
+ EN = new DigitalOut(_EN);
+ CS1 = new DigitalOut(_CS1);
+ CS2 = new DigitalOut(_CS2);
+ LCD_PORT = BUS_LCD;
+ }*/
+myLCD::myLCD(PinName _DI, PinName _RW, PinName _EN, PinName _CS1, PinName _CS2, BusInOut *BUSLCD):DI(_DI),RW(_RW),EN(_EN),CS1(_CS1),CS2(_CS2){
+ LCD_PORT = BUSLCD;
+}
+
+void myLCD::pulse_en(){
+ EN = 1;
+ wait_us(8);
+ EN = 0;
+ wait_us(8);
+}
+
+void myLCD::lcd_on(){
+ DI = 0;
+ RW = 0;
+ EN = 0;
+ CS1 = 0;
+ CS2 = 0;
+ LCD_PORT->output();
+ wait_us(2);
+ LCD_PORT->write(0x3F);
+ wait_us(2);
+ pulse_en();
+}
+
+void myLCD::write_byte(unsigned short byte){
+ DI = 1; //high -> data
+ RW = 0; //low -> write
+ LCD_PORT->write(byte);
+ wait_us(2);
+ pulse_en();
+}
+
+//returns the value into @param &byte
+short myLCD::read_byte(unsigned short col, unsigned short page){
+ unsigned short temp;
+ set_xy(col, page); // this function reads data from current location
+ LCD_PORT->input(); //set as input
+ DI = 1; //high -> data
+ RW = 1; //high -> read
+ CS1 = (col>63);
+ CS2 = !CS1;
+ wait_us(1);
+ EN = 1; //latches data into output register
+ wait_us(1);
+
+ EN = 0; //dummy read
+ wait_us(5); //waits while lcd fetches data
+ EN = 1; //latch data from output register into data register
+ wait_us(1);
+
+ temp = LCD_PORT->read(); //data is saved onto byte from the caller
+ EN = 0; //remove data from the bus
+ wait_us(1);
+ LCD_PORT->output(); //set bus as output again
+ wait_us(2);
+ return temp;
+}
+
+//@param col should be 0<=col<128
+void myLCD::set_col(unsigned short col){
+ unsigned short col_data;
+ DI = 0; //low -> instruction
+ RW = 0; //low -> write
+
+ //0-63
+ if(col < 64){
+ CS1 = 0; //select chip1
+ CS2 = 1; //deselect chip2
+ col_data = col;
+ }
+ else //64-127
+ {
+ CS1 = 1; //deselect chip1
+ CS2 = 0; //select chip2
+ col_data = col - 64;
+ }
+ //command formatting 01CCCCC -> C: column
+ col_data = (col_data | 0x40) & 0x7F;
+ LCD_PORT->write(col_data);
+ wait_us(2);
+ pulse_en();
+}
+
+void myLCD::set_row(unsigned short row){
+ unsigned short row_data;
+ DI = 0; //low -> instruction
+ RW = 0; //low -> write
+ //command formatting 10111PPP -> P: page
+ row_data = (row | 0xB8) & 0xBF; //or with 10111000, and with 10111111. last 3 bits is the page
+ LCD_PORT->write(row_data);
+ wait_us(2);
+ pulse_en();
+}
+
+void myLCD::set_xy(unsigned short col, unsigned short page){
+ set_col(col);
+ set_row(page);
+}
+
+void myLCD::clear(){
+ for(short n = 0; n < 8; n++){
+ set_xy(0,n);
+ set_xy(64,n); //at this point, cs2 is selected
+ CS1 = 1; //select cs1 as well
+ for(short i = 0; i < 64; i++)
+ write_byte(0);
+ }
+}
+
+//@param color = true, draws white. clears otherwise
+void myLCD::draw_point(unsigned short x, unsigned short y, bool color){
+ short data;
+ short byte = read_byte(x, (y/8)); //byte has the point's 8bit data
+
+ if(color){ //paint the point
+ data = ~(1 << (y % 8)) & byte;
+ }
+ else{ //clear the point
+ data = (1 << (y % 8)) | byte;
+ }
+ set_xy(x, y/8);
+ write_byte(data);
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/myLCD/myLCD.h Wed May 29 18:36:43 2019 +0000
@@ -0,0 +1,27 @@
+#ifndef MYLCD_H
+#define MYLCD_H
+
+#include "mbed.h"
+
+class myLCD {
+ public:
+ myLCD(PinName _DI, PinName _RW, PinName _EN, PinName _CS1, PinName _CS2, BusInOut *BUSLCD);
+ void pulse_en();
+ void lcd_on();
+ void write_byte(unsigned short byte);
+ short read_byte(unsigned short col, unsigned short page);
+ void set_col(unsigned short col); //0-127 sets col
+ void set_row(unsigned short row); //0-7 sets page
+ void set_xy(unsigned short col, unsigned short page);
+ void clear();
+ void draw_point(unsigned short x, unsigned short y, bool color); //true prints white, xy coordinates in 0-127, 0-63
+
+ private:
+ BusInOut* LCD_PORT;
+ DigitalOut DI;
+ DigitalOut RW;
+ DigitalOut EN;
+ DigitalOut CS1;
+ DigitalOut CS2;
+};
+#endif
\ No newline at end of file