Marcelo Costanzo Miranda
ST7920 Testes
Diff: main.cpp
- Revision:
- 0:d93bec0d412f
- Child:
- 1:08481151e25e
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Nov 06 10:58:12 2019 +0000
@@ -0,0 +1,257 @@
+#include "mbed.h"
+#define OFF 0
+#define ON 1
+#define CURSOR 0b00011100
+
+BusOut DB(D5, D6, D7, D8, D9, D10, D11, D12); // DB0 - DB7 RESPECTIVAMENTE
+//BusOut DB(D12, D11, D10, D9, D8, D7, D6, D5); // DB7 - DB0 RESPECTIVAMENTE
+
+DigitalOut RS(D2);
+DigitalOut RW(D3);
+DigitalOut EN(D4);
+
+Serial pc(USBTX, USBRX);
+
+
+//imagem 11x9 trator
+unsigned char trator[]={
+0x00, 0x00, 0x1E, 0x00, 0x92, 0x00, 0x92, 0x00,
+0xFE, 0x03, 0xFB, 0x07, 0xF1, 0x03, 0x9B, 0x02,
+0x8E, 0x03};
+
+int main()
+{
+ pc.printf("OI \n\r");
+ wait_ms(100);
+
+ //function set 8-bit mode
+ RS = 0;
+ RW = 0;
+ wait_us(100);
+ EN = ON;
+ DB = 0b00110000;
+ wait_us(100);
+ EN = OFF;
+
+ //function set 8-bit mode again
+ wait_us(1000);
+ RS = 0;
+ RW = 0;
+ wait_us(100);
+ EN = ON;
+ DB = 0b00110000;
+ wait_us(100);
+ EN = OFF;
+
+ // display on
+ wait_us(1000);
+ RS = 0;
+ RW = 0;
+ wait_us(100);
+ EN = ON;
+ DB = 0b00001100;
+ wait_us(100);
+ EN = OFF;
+
+ // cursor - Display shift right by 1, cursor also follows to shift.
+ wait_us(1000);
+ RS = 0;
+ RW = 0;
+ wait_us(100);
+ EN = ON;
+ DB = 0b00011100;
+ wait_us(100);
+ EN = OFF;
+
+ // clear screen
+ wait_us(1000);
+ RS = 0;
+ RW = 0;
+ wait_us(100);
+ EN = ON;
+ DB = 0b00000001;
+ wait_us(2000);
+ EN = OFF;
+
+ // Returns to home. Cursor moves to starting point
+ wait_us(1000);
+ RS = 0;
+ RW = 0;
+ wait_us(100);
+ EN = ON;
+ DB = 0b00000010;
+ wait_us(100);
+ EN = OFF;
+
+ // Setting location to write characters. In this case 0,0 - Top Left Corner
+ wait_us(1000);
+ RS = 0;
+ RW = 0;
+ wait_us(100);
+ EN = ON;
+ DB = 0x80;
+ wait_us(100);
+ EN = OFF;
+
+ wait(2);
+
+ // Extended instuction set, 8bit //
+ wait_us(1000); //
+ RS = 0; //
+ RW = 0; //
+ wait_us(100); //
+ EN = ON; //
+ DB = 0b00110100; //
+ wait_us(100); //
+ EN = OFF; //
+ wait_us(20); //
+ //-----> set graphics mode
+ // Repeat instrution with bit1 set //
+ wait_us(1000); //
+ RS = 0; //
+ RW = 0; //
+ wait_us(100); //
+ EN = ON; //
+ DB = 0b00110110; //
+ wait_us(100); //
+ EN = OFF; //
+ wait_us(20); //
+
+//=========== This function set all the pixels to off in the graphic controller =================
+ for(int y = 0; y < 64; y++)
+ {
+ if(y < 32)
+ {
+ wait_us(1000);
+ RS = 0;
+ RW = 0;
+ wait_us(100);
+ EN = ON;
+ DB = (0x80 | y);
+ wait_us(100);
+ EN = OFF;
+ wait_us(100);
+
+ wait_us(1000);
+ RS = 0;
+ RW = 0;
+ wait_us(100);
+ EN = ON;
+ DB = 0x80;
+ wait_us(100);
+ EN = OFF;
+ wait_us(100);
+ }
+
+ else
+ {
+ wait_us(1000);
+ RS = 0;
+ RW = 0;
+ wait_us(100);
+ EN = ON;
+ DB = (0x80 | (y - 32));
+ wait_us(100);
+ EN = OFF;
+ wait_us(100);
+
+ wait_us(1000);
+ RS = 0;
+ RW = 0;
+ wait_us(100);
+ EN = ON;
+ DB = 0x88;
+ wait_us(100);
+ EN = OFF;
+ wait_us(100);
+ }
+
+ for(int x = 0; x < 16; x++)
+ {
+ wait_us(1000);
+ RS = 1;
+ RW = 0;
+ wait_us(100);
+ EN = ON;
+ DB = 0x00;
+ wait_us(100);
+ EN = OFF;
+ wait_us(20);
+ }
+ }
+
+
+ //desenhando uma linha de tamanho T em Y, com X offset
+
+ unsigned char X = 0; // 0 até 7
+ unsigned char Y = 0; // 0 até 31
+ unsigned int T = 5; // 1 até 256
+
+ wait_us(1000);
+ RS = 0;
+ RW = 0;
+ wait_us(100);
+ EN = ON;
+ DB = 0x80 | Y;
+ wait_us(100);
+ EN = OFF;
+ wait_us(100);
+
+ wait_us(1000);
+ RS = 0;
+ RW = 0;
+ wait_us(100);
+ EN = ON;
+ DB = 0x80 | X;
+ wait_us(100);
+ EN = OFF;
+ wait_us(100);
+
+ for(int i = 0; i < (T / 8); i++)
+ {
+ wait_us(1000);
+ RS = 1;
+ RW = 0;
+ wait_us(100);
+ EN = ON;
+ DB = (255);
+ wait_us(100);
+ EN = OFF;
+ wait_us(20);
+ }
+
+ if(T%8 != 0)
+ {
+ int T_rest = T - ((T / 8) * 8);
+ int bus_rest;
+
+ switch (T_rest)
+ {
+ case 1: bus_rest = 0x80; break;
+ case 2: bus_rest = 0xC0; break;
+ case 3: bus_rest = 0xE0; break;
+ case 4: bus_rest = 0xF0; break;
+ case 5: bus_rest = 0xF8; break;
+ case 6: bus_rest = 0xFC; break;
+ case 7: bus_rest = 0xFE; break;
+ }
+ pc.printf("%x\n\r",bus_rest);
+ wait_us(1000);
+ RS = 1;
+ RW = 0;
+ wait_us(100);
+ EN = ON;
+ DB = bus_rest; // tem que ser 254 no exemplo de T 255
+ wait_us(100);
+ EN = OFF;
+ wait_us(20);
+ }
+
+
+ pc.printf("teste 11 \n\r");
+
+ while(1)
+ {
+
+ }
+}