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Commit 554237ac authored by Eric Brombaugh's avatar Eric Brombaugh
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Updated README

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examples/spi_oled/README.md
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View file @ 554237ac
......@@ -8,11 +8,11 @@ different graphic screens to test out the various drawing primitives.
## Build options
There are two build-time options in the oled.h source:
* OLED_PSZ - the number of bytes to send per SPI data packet. The default value
* SSD1306_PSZ - the number of bytes to send per SPI data packet. The default value
of 32 seems to work well. Smaller values are allowed but may result in slower
refresh rates.
* OLED_64X32, OLED_128X32, OLED_128X64 - choose only one of these depending on
the type of OLED you've got.
* SSD1306_64X32, SSD1306_128X32, SSD1306_128X64 - choose only one of these
depending on the type of OLED you've got.
## Use
Connect an SSD1306-based OLED in SPI interface mode as follows:
......
examples/spi_oled/spi_oled.c
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View file @ 554237ac
......@@ -9,8 +9,8 @@
#include "ch32v003fun.h"
#include <stdio.h>
#include <stdlib.h>
#include "oled.h"
#include "ssd1306_spi.h"
#include "ssd1306.h"
/* White Noise Generator State */
#define NOISE_BITS 8
......@@ -46,11 +46,11 @@ uint8_t rand8(void)
*/
uint8_t getpix(uint8_t *buf, int16_t x, int16_t y)
{
if((x<0) || (x>=OLED_W))
if((x<0) || (x>=SSD1306_W))
return 0;
if((y<0) || (y>=OLED_H))
if((y<0) || (y>=SSD1306_H))
return 0;
return buf[x+OLED_W*(y>>3)] & (1<<(y&7)) ? 1 : 0;
return buf[x+SSD1306_W*(y>>3)] & (1<<(y&7)) ? 1 : 0;
}
/*
......@@ -58,14 +58,14 @@ uint8_t getpix(uint8_t *buf, int16_t x, int16_t y)
*/
void conway(uint8_t *buf)
{
uint8_t col[2][(OLED_H>>3)];
uint8_t col[2][(SSD1306_H>>3)];
int16_t x, y, B, b, sum, d, colidx = 0;
/* iterate over columns */
for(x=0;x<OLED_W;x++)
for(x=0;x<SSD1306_W;x++)
{
/* iterate bytes in column */
for(B=0;B<(OLED_H>>3);B++)
for(B=0;B<(SSD1306_H>>3);B++)
{
/* init byte accum */
d = 0;
......@@ -109,16 +109,16 @@ void conway(uint8_t *buf)
if(x>0)
{
/* update previous column */
for(y=0;y<(OLED_H>>3);y++)
buf[(x-1)+OLED_W*y] = col[colidx][y];
for(y=0;y<(SSD1306_H>>3);y++)
buf[(x-1)+SSD1306_W*y] = col[colidx][y];
}
}
colidx ^= 1;
/* update final column */
for(y=0;y<(OLED_H>>3);y++)
buf[127+OLED_W*y] = col[colidx][y];
for(y=0;y<(SSD1306_H>>3);y++)
buf[127+SSD1306_W*y] = col[colidx][y];
}
int count = 0;
......@@ -140,33 +140,34 @@ int main()
// init spi and oled
Delay_Ms( 100 ); // give OLED some more time
printf("initializing spi oled...");
if(!oled_init())
if(!ssd1306_spi_init())
{
ssd1306_init();
printf("done.\n\r");
#if 0
printf("Looping on test modes...");
while(1)
{
for(uint8_t mode=0;mode<(OLED_H>32?8:7);mode++)
for(uint8_t mode=0;mode<(SSD1306_H>32?8:7);mode++)
{
// clear buffer for next mode
oled_setbuf(0);
ssd1306_setbuf(0);
switch(mode)
{
case 0:
printf("buffer fill with binary\n\r");
for(int i=0;i<sizeof(oled_buffer);i++)
oled_buffer[i] = i;
for(int i=0;i<sizeof(ssd1306_buffer);i++)
ssd1306_buffer[i] = i;
break;
case 1:
printf("pixel plots\n\r");
for(int i=0;i<OLED_W;i++)
for(int i=0;i<SSD1306_W;i++)
{
oled_drawPixel(i, i/(OLED_W/OLED_H), 1);
oled_drawPixel(i, OLED_H-1-(i/(OLED_W/OLED_H)), 1);
ssd1306_drawPixel(i, i/(SSD1306_W/SSD1306_H), 1);
ssd1306_drawPixel(i, SSD1306_H-1-(i/(SSD1306_W/SSD1306_H)), 1);
}
break;
......@@ -174,61 +175,61 @@ int main()
{
printf("Line plots\n\r");
uint8_t y= 0;
for(uint8_t x=0;x<OLED_W;x+=16)
for(uint8_t x=0;x<SSD1306_W;x+=16)
{
oled_drawLine(x, 0, OLED_W, y, 1);
oled_drawLine(OLED_W-x, OLED_H, 0, OLED_H-y, 1);
y+= OLED_H/8;
ssd1306_drawLine(x, 0, SSD1306_W, y, 1);
ssd1306_drawLine(SSD1306_W-x, SSD1306_H, 0, SSD1306_H-y, 1);
y+= SSD1306_H/8;
}
}
break;
case 3:
printf("Circles empty and filled\n\r");
for(uint8_t x=0;x<OLED_W;x+=16)
for(uint8_t x=0;x<SSD1306_W;x+=16)
if(x<64)
oled_drawCircle(x, OLED_H/2, 15, 1);
ssd1306_drawCircle(x, SSD1306_H/2, 15, 1);
else
oled_fillCircle(x, OLED_H/2, 15, 1);
ssd1306_fillCircle(x, SSD1306_H/2, 15, 1);
break;
case 4:
printf("Unscaled Text\n\r");
oled_drawstr(0,0, "This is a test", 1);
oled_drawstr(0,8, "of the emergency", 1);
oled_drawstr(0,16,"broadcasting", 1);
oled_drawstr(0,24,"system.",1);
if(OLED_H>32)
ssd1306_drawstr(0,0, "This is a test", 1);
ssd1306_drawstr(0,8, "of the emergency", 1);
ssd1306_drawstr(0,16,"broadcasting", 1);
ssd1306_drawstr(0,24,"system.",1);
if(SSD1306_H>32)
{
oled_drawstr(0,32, "Lorem ipsum", 1);
oled_drawstr(0,40, "dolor sit amet,", 1);
oled_drawstr(0,48,"consectetur", 1);
oled_drawstr(0,56,"adipiscing",1);
ssd1306_drawstr(0,32, "Lorem ipsum", 1);
ssd1306_drawstr(0,40, "dolor sit amet,", 1);
ssd1306_drawstr(0,48,"consectetur", 1);
ssd1306_drawstr(0,56,"adipiscing",1);
}
oled_xorrect(OLED_W/2, 0, OLED_W/2, OLED_W);
ssd1306_xorrect(SSD1306_W/2, 0, SSD1306_W/2, SSD1306_W);
break;
case 5:
printf("Scaled Text 1, 2\n\r");
oled_drawstr_sz(0,0, "sz 8x8", 1, fontsize_8x8);
oled_drawstr_sz(0,16, "16x16", 1, fontsize_16x16);
ssd1306_drawstr_sz(0,0, "sz 8x8", 1, fontsize_8x8);
ssd1306_drawstr_sz(0,16, "16x16", 1, fontsize_16x16);
break;
case 6:
printf("Scaled Text 4\n\r");
oled_drawstr_sz(0,0, "32x32", 1, fontsize_32x32);
ssd1306_drawstr_sz(0,0, "32x32", 1, fontsize_32x32);
break;
case 7:
printf("Scaled Text 8\n\r");
oled_drawstr_sz(0,0, "64", 1, fontsize_64x64);
ssd1306_drawstr_sz(0,0, "64", 1, fontsize_64x64);
break;
default:
break;
}
oled_refresh();
ssd1306_refresh();
printf("count = %d\n\r", count++);
......@@ -242,19 +243,19 @@ int main()
int i;
/* fill with random */
for(i=0;i<sizeof(oled_buffer);i++)
for(i=0;i<sizeof(ssd1306_buffer);i++)
{
oled_buffer[i] = rand8();
ssd1306_buffer[i] = rand8();
}
oled_refresh();
ssd1306_refresh();
/* run conway iterations */
for(i=0;i<500;i++)
{
conway(oled_buffer);
conway(ssd1306_buffer);
/* refresh */
oled_refresh();
ssd1306_refresh();
}
printf("count = %d\n\r", count++);
......
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