Marcelo Costanzo Miranda
ST7920 Testes
Diff: main.cpp
- Revision:
- 1:08481151e25e
- Parent:
- 0:d93bec0d412f
- Child:
- 2:5bcfb7105fa2
--- a/main.cpp Wed Nov 06 10:58:12 2019 +0000
+++ b/main.cpp Mon Dec 14 19:10:22 2020 +0000
@@ -1,257 +1,53 @@
-#include "mbed.h"
-#define OFF 0
-#define ON 1
-#define CURSOR 0b00011100
+/*
+* ATENÇÃO ST7920_CLEAR DESATIVA O MODO GRÁFICO
+*
+*
+*/
-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);
+#include "mbed.h"
+#include "ST7920.h"
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()
{
+ unsigned char texto[]={'O','l','a','!', ' ', 'S', 'T', '7', '9', '2', '0'};
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;
+ ST7920_Init();
+ wait_ms(100);
- // 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;
+ //ST7920_Clear();
+ //wait_ms(100);
- // 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;
+ //ST7920_SetGraphicsMode();
+ //wait_ms(100);
- 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); //
+ //ST7920_Clear();
+ //wait_ms(100);
+
+ //ST7920_SetGraphicsMode();
-//=========== 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
+ //ST7920_Clear();
+
+ //ST7920_DrawHorizontalLine(0, 0, 100);
+ //wait_ms(100);
+
+ //ST7920_DrawVerticalLine(0, 0, 50);
+ //wait_ms(100);
- 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);
+ //ST7920_SetTextMode();
+ //wait_ms(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);
- }
-
+ ST7920_Clear();
+ //wait_ms(100);
- pc.printf("teste 11 \n\r");
-
+ ST7920_DisplayString(1, 1, texto, sizeof(texto));
+ //wait_ms(100);
+
while(1)
{
}
}
+