@@ -0,0 +1,7 @@ | |||
# ST7735 SPI Display Toolkit | |||
Built and tested with OrangePi Zero and ST7735 128x160 v1.1 SPI display. | |||
## Resources | |||
* [https://github.com/orangepi-xunlong/WiringOP](orangepi-xunlong/WiringOP) - GPIO controlling library compatible with Raspberry Pi's WiringPi | |||
* [https://github.com/dhepper/font8x8](dhepper/font8x8) - 8x8 pixels monospaced font |
@@ -1,74 +1,106 @@ | |||
#include <stdio.h> | |||
#include "st7735.h" | |||
#include <stdlib.h> | |||
#include <time.h> | |||
#include <unistd.h> | |||
#include <wiringPi.h> | |||
#include "spilcd.h" | |||
#include "spilcd_gfx.h" | |||
#include "spilcd_font.h" | |||
uint8 random_color_r(int seed); | |||
uint8 random_color_g(int seed); | |||
uint8 random_color_b(int seed); | |||
inline uint8 random_color_r(int seed) { return seed % (256 / 7) * 7; } | |||
inline uint8 random_color_g(int seed) { return seed % (256 / 13) * 13; } | |||
inline uint8 random_color_b(int seed) { return seed % (256 / 23) * 23; } | |||
int main(int argc, char *argv[]) | |||
{ | |||
setbuf(stdout, NULL); | |||
srand(time(NULL)); | |||
wiringPiSetup(); | |||
lcd_t* lcd = lcd_init(40000000, 10, 2, 0); | |||
lcd_t* lcd = lcd_init(40000000, 1, 10, 7, 8); | |||
printf("Fill display..."); | |||
printf("blue..."); | |||
lcd_fillScreen(0, 70, 160); | |||
delay(1000); | |||
lcd_fillScreen(lcd, 0, 70, 160); | |||
printf("...waiting 1 second..."); | |||
sleep(1); | |||
printf("black..."); | |||
lcd_fillScreen(0, 0, 0); | |||
lcd_fillScreen(lcd, 0, 0, 0); | |||
printf("DONE\n"); | |||
delay(1000); | |||
/* Draw the lines */ | |||
/*printf("Lines..."); | |||
lcdst_drawHLine(0, 149, 128, 0, 255, 255); | |||
lcdst_drawHLine(0, 139, 128, 255, 255, 0); | |||
lcdst_drawVLine(117, 0, 160, 0, 255, 255); | |||
lcdst_drawVLine(107, 0, 160, 255, 255, 0); | |||
printf("DONE\n");*/ | |||
/*printf("Points..."); | |||
for (int i = 1; i < 20; i++) { | |||
lcdst_drawPx(5 - 1, 70 + i, 100, 100, 100); | |||
lcdst_drawPx(5 + i + 1, 70 + i, 100, 100, 100); | |||
printf("...waiting 1 second...\n"); | |||
sleep(1); | |||
printf("Points..."); | |||
for (int i = 1; i < 2000; i++) { | |||
int r = rand(); | |||
lcd_drawPixel(lcd, r % 128, i % 160, | |||
random_color_r(i), | |||
random_color_g(i), | |||
random_color_b(i)); | |||
} | |||
printf("DONE\n"); | |||
printf("Triangle..."); | |||
for (int i = 1; i < 20; i++) { | |||
lcdst_drawHLine(5, 70 + i, i, 255, 0, 0); | |||
printf("...waiting 1 second...\n"); | |||
sleep(1); | |||
printf("Regions..."); | |||
int w = 15; | |||
int h = 20; | |||
for (int i = 1; i < 200; i++) { | |||
int x = rand() % (128 - w); | |||
int y = rand() % (160 - h); | |||
lcd_setWindow(lcd, x, y, x + w - 1, y + h - 1); | |||
uint8 r = rand(); | |||
uint8 g = rand(); | |||
uint8 b = rand(); | |||
for (int p = 0; p < w*h; p++) { | |||
lcd_pushPixel(lcd, r * p / (w*h), g * (w*h-p) / (w*h), b); | |||
} | |||
} | |||
printf("DONE\n");*/ | |||
printf("DONE\n"); | |||
printf("...waiting 1 second...\n"); | |||
sleep(1); | |||
printf("Rectangles..."); | |||
//printf("outline..."); | |||
//lcd_drawRect(10, 10, 10, 10, 0, 255, 255); | |||
//lcd_drawRect(10, 30, 10, 10, 255, 255, 0); | |||
printf("filled..."); | |||
lcd_fillRect(30, 10, 10, 10, 0, 255, 255); | |||
lcd_fillRect(30, 30, 10, 10, 255, 255, 0); | |||
printf("bunch..."); | |||
for (int i = 0; i < 40; i++) { | |||
lcd_fillRect(40 + (i%13) * 4, 40 + (i%19) * 4, 20, 20, i % 5 * 15, i % 7 * 17, i % 3 * 23); | |||
} | |||
lcd_fillScreen(lcd, 0, 0, 0); | |||
lcd_fillRect(lcd, 30, 10, 10, 10, 0, 255, 255); | |||
lcd_fillRect(lcd, 30, 30, 10, 10, 255, 255, 0); | |||
printf("DONE\n"); | |||
printf("...waiting 1 second...\n"); | |||
sleep(1); | |||
printf("Text..."); | |||
lcd_printChar(10, 90, 'A'); | |||
lcd_printText(10, 50, "Ahoj!"); | |||
lcd_printChar(10, 100, 'Z'); | |||
lcd_fillScreen(lcd, 0, 0, 0); | |||
lcd_printChar(lcd, 10, 90, 'A'); | |||
lcd_printText(lcd, 10, 50, "Hello, world!"); | |||
lcd_printChar(lcd, 10, 100, 'Z'); | |||
printf("DONE\n"); | |||
/* Send the raw data */ | |||
/* printf("Raw..."); | |||
lcdst_setWindow(20, 20, 29, 29); | |||
for(uint8 i=0; i<100; i++) lcdst_pushPx(255, 0, 255); | |||
lcdst_setWindow(0, 0, 127, 159); | |||
printf("DONE\n");*/ | |||
printf("...waiting 2 seconds...\n"); | |||
sleep(2); | |||
/* Uninitialize the display */ | |||
//lcd_deinit(lcd); | |||
printf("Pulsing color..."); | |||
for (int i = 0; i < 256; i++) { | |||
lcd_fillScreen(lcd, | |||
random_color_r(i), | |||
random_color_g(i), | |||
random_color_b(i)); | |||
} | |||
printf("DONE\n"); | |||
printf("...waiting 2 seconds before shutdown...\n"); | |||
sleep(2); | |||
printf("Terminating...\n"); | |||
lcd_fillScreen(lcd, 0, 0, 0); | |||
lcd_deinit(lcd); | |||
printf("DONE\n"); | |||
return 0; | |||
} | |||
@@ -1,3 +1,3 @@ | |||
project('dejvino-ST7735', 'c') | |||
src = ['main.c', 'st7735.c'] | |||
src = ['main.c', 'spilcd_gfx.c', 'spilcd_font.c', 'st7735.c'] | |||
executable('st7735', src, link_args: '-lwiringPi') |
@@ -0,0 +1,80 @@ | |||
#ifndef uint8 | |||
#define uint8 unsigned char | |||
#endif | |||
#ifndef __SPILCD_H__ | |||
#define __SPILCD_H__ | |||
typedef struct | |||
{ | |||
int channel; | |||
int cs, a0, rs; | |||
uint8 width, height; | |||
} lcd_t; | |||
/* | |||
* Initialize the display. | |||
* | |||
* Parameters: | |||
* spiSpeed - Speed of the SPI interface. | |||
* channel - SPI channel | |||
* cs - Chip selection pin. | |||
* a0 - Data/Command pin. | |||
* rs - Optional reset pin. Use -1 when not connected. | |||
* | |||
* Return: Pointer to the structure with display data. | |||
* | |||
*/ | |||
lcd_t *lcd_init(int spiSpeed, int channel, int cs, int a0, int rs); | |||
/* | |||
* Reset the specified display and clear the previously assigned memory. | |||
* | |||
* Parameters: | |||
* lcd - display to use | |||
* | |||
* Return: void | |||
*/ | |||
void lcd_deinit(lcd_t *lcd); | |||
/* | |||
* Set the drawing area. | |||
* | |||
* Parameters: | |||
* lcd - display to use | |||
* x1 - The X parameter of the starting point. | |||
* y1 - The Y parameter of the starting point. | |||
* x2 - The X parameter of the ending point. | |||
* y2 - The Y parameter of the ending point. | |||
* | |||
* Return: 0 for success, 1 for error. | |||
* | |||
*/ | |||
uint8 lcd_setWindow(lcd_t* lcd, uint8 x1, uint8 y1, uint8 x2, uint8 y2); | |||
/* | |||
* Push a pixel into the previously set drawing area. | |||
* | |||
* Parameters: | |||
* lcd - display to use | |||
* r - red color (0 to 255) | |||
* g - green color (0 to 255) | |||
* b - blue color (0 to 255) | |||
*/ | |||
void lcd_pushPixel(lcd_t* lcd, uint8 r, uint8 g, uint8 b); | |||
/* | |||
* Push an array of pixels into the previously set drawing area. | |||
* Significantly faster than pushing pixels individually. | |||
* | |||
* Parameters: | |||
* lcd - display to use | |||
* pixels - array of pixels where: | |||
* pixels[i * 3 + 0] = i-th red color (0 to 255) | |||
* pixels[i * 3 + 1] = i-th green color (0 to 255) | |||
* pixels[i * 3 + 2] = i-th blue color (0 to 255) | |||
* count - number of pixels in the array | |||
*/ | |||
void lcd_pushPixels(lcd_t* lcd, uint8* pixels, size_t count); | |||
#endif // __SPILCD_H__ | |||
@@ -0,0 +1,37 @@ | |||
#include <stdio.h> | |||
#include <stdint.h> | |||
#include <stdlib.h> | |||
#include <string.h> | |||
#include "spilcd_font.h" | |||
#include "font8x8_basic.h" | |||
static void lcd_pushChar(lcd_t* lcd, char c) | |||
{ | |||
char* bitmap = font8x8_basic[(unsigned int) c]; | |||
int x,y; | |||
int set; | |||
for (x=0; x < 8; x++) { | |||
for (y=0; y < 8; y++) { | |||
set = bitmap[x] & 1 << y; | |||
if (set) { | |||
lcd_pushPixel(lcd, 200, 0, 0); | |||
} else { | |||
lcd_pushPixel(lcd, 0, 0, 0); | |||
} | |||
} | |||
} | |||
} | |||
void lcd_printChar(lcd_t* lcd, uint8 x, uint8 y, char c) | |||
{ | |||
lcd_setWindow(lcd, x, y, x+8 - 1, y+8 - 1); | |||
lcd_pushChar(lcd, c); | |||
} | |||
void lcd_printText(lcd_t* lcd, uint8 x, uint8 y, char* text) | |||
{ | |||
for (int i = 0; i < strlen(text); i++) { | |||
lcd_printChar(lcd, x + i * 8, y, text[i]); | |||
} | |||
} | |||
@@ -0,0 +1,5 @@ | |||
#include "spilcd.h" | |||
void lcd_printChar(lcd_t* lcd, uint8 x, uint8 y, char c); | |||
void lcd_printText(lcd_t* lcd, uint8 x, uint8 y, char* text); | |||
@@ -0,0 +1,41 @@ | |||
#include <stdio.h> | |||
#include <stdint.h> | |||
#include <stdlib.h> | |||
#include "spilcd_gfx.h" | |||
void lcd_drawPixel(lcd_t* lcd, uint8 x, uint8 y, uint8 r, uint8 g, uint8 b) | |||
{ | |||
if(lcd_setWindow(lcd, x, y, x, y)) return; | |||
lcd_pushPixel(lcd, r, g, b); | |||
} | |||
void lcd_fillRect(lcd_t* lcd, uint8 x, uint8 y, uint8 w, uint8 h, | |||
uint8 r, uint8 g, uint8 b) | |||
{ | |||
if((w == 0) || (h == 0)) return; | |||
if((x+w-1) >= lcd->width) w = lcd->width - x; | |||
if((y+h-1) >= lcd->height) h = lcd->height - y; | |||
if(lcd_setWindow(lcd, x, y, x+w-1, y+h-1)) return; | |||
#define BUFFER_PIXELS 64 | |||
int wh = w*h; | |||
uint8 buffer[BUFFER_PIXELS * sizeof(uint8) * 3]; | |||
for (int p = 0; p < wh; p += BUFFER_PIXELS) { | |||
for(int pb = 0; pb < BUFFER_PIXELS; pb++) { | |||
buffer[pb * 3 + 0] = r; | |||
buffer[pb * 3 + 1] = g; | |||
buffer[pb * 3 + 2] = b; | |||
} | |||
int rem = wh - p; | |||
lcd_pushPixels(lcd, buffer, ((rem < BUFFER_PIXELS) ? rem : BUFFER_PIXELS)); | |||
} | |||
} | |||
void lcd_fillScreen(lcd_t* lcd, uint8 r, uint8 g, uint8 b) | |||
{ | |||
lcd_fillRect(lcd, 0, 0, | |||
lcd->width, lcd->height, | |||
r, g, b); | |||
} | |||
@@ -0,0 +1,50 @@ | |||
#include "spilcd.h" | |||
/* | |||
* Draw one pixel on the currently active display. | |||
* The color intensity scale for a normal pixel is from 0 to 255. | |||
* The color intensity scale for the reduced pixel is from 0 to 15. | |||
* | |||
* Parameters: | |||
* x - The X parameter of the pixel. | |||
* y - The Y parameter of the pixel. | |||
* r - The intensity of the red color. | |||
* g - The intensity of the green color. | |||
* b - The intensity of the blue color. | |||
* | |||
* Return: void | |||
*/ | |||
void lcd_drawPixel(lcd_t* lcd, uint8 x, uint8 y, uint8 r, uint8 g, uint8 b); | |||
/* | |||
* Draw a filled rectangle on the currently active display. | |||
* The color intensity scale for a normal pixel is from 0 to 255. | |||
* The color intensity scale for the reduced pixel is from 0 to 15. | |||
* | |||
* Parameters: | |||
* x - Parameter X of the upper left corner of the rectangle. | |||
* y - Parameter Y of the upper left corner of the rectangle. | |||
* w - The width of the rectangle. | |||
* h - The height of the rectangle. | |||
* r - The intensity of the red color. | |||
* g - The intensity of the green color. | |||
* b - The intensity of the blue color. | |||
* | |||
* Return: void | |||
*/ | |||
void lcd_fillRect(lcd_t* lcd, uint8 x, uint8 y, uint8 w, uint8 h, uint8 r, uint8 g, uint8 b); | |||
/* | |||
* Fill the entire screen with one color of the currently active display. | |||
* The color intensity scale for a normal pixel is from 0 to 255. | |||
* The color intensity scale for the reduced pixel is from 0 to 15. | |||
* | |||
* Parameters: | |||
* r - The intensity of the red color. | |||
* g - The intensity of the green color. | |||
* b - The intensity of the blue color. | |||
* | |||
* Return: void | |||
*/ | |||
void lcd_fillScreen(lcd_t* lcd, uint8 r, uint8 g, uint8 b); | |||
@@ -1,8 +1,8 @@ | |||
#include <stdio.h> | |||
#include <stdint.h> | |||
#include <stdlib.h> | |||
#include <string.h> | |||
#include "st7735.h" | |||
#include "font8x8_basic.h" | |||
/********************************** EASY PORT *********************************/ | |||
/* | |||
@@ -28,9 +28,6 @@ struct | |||
}; | |||
/****************************** END EASY PORT END *****************************/ | |||
/* The global variable that stores the pointer to the structure, | |||
* with the current active display. | |||
*/ | |||
static lcd_t *activeDisplay; | |||
/* | |||
@@ -57,11 +54,10 @@ static inline void *safeMalloc(size_t size) | |||
} /* safeMalloc */ | |||
void lcd_setOrientation(uint8 orientation); | |||
void lcd_setGamma(uint8 state); | |||
void lcd_pushPx(uint8 r, uint8 g, uint8 b); | |||
void lcd_pushPixels(uint8* pixels, size_t count); | |||
void lcd_pushChar(char c); | |||
void lcd_setOrientation(lcd_t* lcd, uint8 orientation); | |||
void lcd_setGamma(lcd_t* lcd, uint8 state); | |||
void lcd_pushPixel(lcd_t* lcd, uint8 r, uint8 g, uint8 b); | |||
void lcd_pushPixels(lcd_t* lcd, uint8* pixels, size_t count); | |||
/* | |||
* Write the command to the display driver. | |||
@@ -72,7 +68,7 @@ void lcd_pushChar(char c); | |||
static inline void writeCommand(uint8 cmd) | |||
{ | |||
gpio.digitalWrite(activeDisplay->a0, LOW); | |||
gpio.spiDataRW(activeDisplay->cs, &cmd, 1); | |||
gpio.spiDataRW(activeDisplay->channel, &cmd, 1); | |||
} /* writeCommand */ | |||
/* | |||
@@ -84,17 +80,17 @@ static inline void writeCommand(uint8 cmd) | |||
static inline void writeData(uint8 data) | |||
{ | |||
gpio.digitalWrite(activeDisplay->a0, HIGH); | |||
gpio.spiDataRW(activeDisplay->cs, &data, 1); | |||
gpio.spiDataRW(activeDisplay->channel, &data, 1); | |||
} /* writeData */ | |||
lcd_t *lcd_init(int spiSpeed, int cs, int a0, int rs) | |||
lcd_t *lcd_init(int spiSpeed, int channel, int cs, int a0, int rs) | |||
{ | |||
/* Create the one instance of the lcdst_t structure and activate it */ | |||
lcd_t *instance = (lcd_t *) safeMalloc(sizeof(lcd_t)); | |||
activeDisplay = instance; | |||
/* Assign specific pins */ | |||
instance->channel = channel; | |||
instance->cs = cs; | |||
instance->a0 = a0; | |||
instance->rs = rs; | |||
@@ -116,7 +112,7 @@ lcd_t *lcd_init(int spiSpeed, int cs, int a0, int rs) | |||
} | |||
/* Configure the SPI interface */ | |||
if(gpio.spiSetup(instance->cs, spiSpeed) == -1) | |||
if(gpio.spiSetup(instance->channel, spiSpeed) == -1) | |||
{ | |||
fprintf(stderr, "Failed to setup the SPI interface!\n"); | |||
exit(EXIT_FAILURE); | |||
@@ -131,8 +127,8 @@ lcd_t *lcd_init(int spiSpeed, int cs, int a0, int rs) | |||
gpio.delay(150); | |||
/* Set the orientation and the gamma */ | |||
lcd_setOrientation(0); | |||
lcd_setGamma(2); /* Optional */ | |||
lcd_setOrientation(instance, 0); | |||
lcd_setGamma(instance, 2); /* Optional */ | |||
/* Set the pixel format */ | |||
writeCommand(0x3A); | |||
@@ -152,7 +148,7 @@ void lcd_deinit(lcd_t *display) | |||
free(display); | |||
} /* lcdst_uninit */ | |||
void lcd_setOrientation(uint8 orientation) | |||
void lcd_setOrientation(lcd_t* lcd, uint8 orientation) | |||
{ | |||
writeCommand(0x36); /* Memory Data Access Control */ | |||
@@ -162,33 +158,33 @@ void lcd_setOrientation(uint8 orientation) | |||
writeData(0x60); /* MX + MV */ | |||
activeDisplay->width = 160; | |||
activeDisplay->height = 128; | |||
lcd_setWindow(0, 0, 159, 127); | |||
lcd_setWindow(lcd, 0, 0, 159, 127); | |||
break; | |||
case 2: | |||
writeData(0xC0); /* MY + MX */ | |||
activeDisplay->width = 128; | |||
activeDisplay->height = 160; | |||
lcd_setWindow(0, 0, 127, 159); | |||
lcd_setWindow(lcd, 0, 0, 127, 159); | |||
break; | |||
case 3: | |||
writeData(0xA0); /* MY + MV */ | |||
activeDisplay->width = 160; | |||
activeDisplay->height = 128; | |||
lcd_setWindow(0, 0, 159, 127); | |||
lcd_setWindow(lcd, 0, 0, 159, 127); | |||
break; | |||
default: | |||
writeData(0x00); /* None */ | |||
activeDisplay->width = 128; | |||
activeDisplay->height = 160; | |||
lcd_setWindow(0, 0, 127, 159); | |||
lcd_setWindow(lcd, 0, 0, 127, 159); | |||
break; | |||
} | |||
} /* lcdst_setOrientation */ | |||
void lcd_setGamma(uint8 state) | |||
void lcd_setGamma(lcd_t* lcd, uint8 state) | |||
{ | |||
/* The status (0 or 1) of the GS pin can only be empirically tested */ | |||
switch(state) | |||
@@ -204,13 +200,13 @@ void lcd_setGamma(uint8 state) | |||
writeData(state); | |||
} /* lcdst_setGamma */ | |||
void lcd_setInversion(uint8 state) | |||
void lcd_setInversion(lcd_t* lcd, uint8 state) | |||
{ | |||
/* Display inversion ON/OFF */ | |||
writeCommand(state ? 0x21 : 0x20); | |||
} /* lcdst_setInversion */ | |||
uint8 lcd_setWindow(uint8 x1, uint8 y1, uint8 x2, uint8 y2) | |||
uint8 lcd_setWindow(lcd_t* lcd, uint8 x1, uint8 y1, uint8 x2, uint8 y2) | |||
{ | |||
/* Accept: 0 <= x1 <= x2 < activeDisplay->width */ | |||
if(x2 < x1) return 1; | |||
@@ -245,88 +241,18 @@ void lcd_activateRamWrite(void) | |||
uint8 pixel[3]; | |||
inline void lcd_pushPx(uint8 r, uint8 g, uint8 b) | |||
inline void lcd_pushPixel(lcd_t* lcd, uint8 r, uint8 g, uint8 b) | |||
{ | |||
gpio.digitalWrite(activeDisplay->a0, HIGH); | |||
pixel[0] = r; | |||
pixel[1] = g; | |||
pixel[2] = b; | |||
gpio.spiDataRW(activeDisplay->cs, pixel, 3); | |||
gpio.spiDataRW(activeDisplay->channel, pixel, 3); | |||
} /* lcdst_pushPx */ | |||
void lcd_pushPixels(uint8* pixels, size_t count) | |||
void lcd_pushPixels(lcd_t* lcd, uint8* pixels, size_t count) | |||
{ | |||
gpio.digitalWrite(activeDisplay->a0, HIGH); | |||
gpio.spiDataRW(activeDisplay->cs, pixels, count * 3); | |||
} | |||
void lcd_drawPx(uint8 x, uint8 y, uint8 r, uint8 g, uint8 b) | |||
{ | |||
if(lcd_setWindow(x, y, x, y)) return; | |||
lcd_pushPx(r, g, b); | |||
} /* lcdst_drawPx */ | |||
void lcd_fillRect(uint8 x, uint8 y, uint8 w, uint8 h, | |||
uint8 r, uint8 g, uint8 b) | |||
{ | |||
/* Draw only in the display space */ | |||
if((w == 0) || (h == 0)) return; | |||
if((x+w-1) >= activeDisplay->width) w = activeDisplay->width - x; | |||
if((y+h-1) >= activeDisplay->height) h = activeDisplay->height - y; | |||
/* Draw the filled rectangle */ | |||
if(lcd_setWindow(x, y, x+w-1, y+h-1)) return; | |||
#define BUFFER_PIXELS 64 | |||
int wh = w*h; | |||
uint8 buffer[BUFFER_PIXELS * sizeof(uint8) * 3]; | |||
for (int p = 0; p < wh; p += BUFFER_PIXELS) { | |||
for(int pb = 0; pb < BUFFER_PIXELS; pb++) { | |||
buffer[pb * 3 + 0] = r; | |||
buffer[pb * 3 + 1] = g; | |||
buffer[pb * 3 + 2] = b; | |||
} | |||
int rem = wh - p; | |||
lcd_pushPixels(buffer, ((rem < BUFFER_PIXELS) ? rem : BUFFER_PIXELS)); | |||
} | |||
} | |||
void lcd_fillScreen(uint8 r, uint8 g, uint8 b) | |||
{ | |||
/* Fill the whole screen with one color */ | |||
lcd_fillRect(0, 0, activeDisplay->width, activeDisplay->height, r, g, b); | |||
} /* lcdst_drawScreen */ | |||
void lcd_pushChar(char c) | |||
{ | |||
char* bitmap = font8x8_basic[(unsigned int) c]; | |||
int x,y; | |||
int set; | |||
int mask; | |||
for (x=0; x < 8; x++) { | |||
for (y=0; y < 8; y++) { | |||
set = bitmap[x] & 1 << y; | |||
printf("%c", set ? 'X' : ' '); | |||
if (set) { | |||
lcd_pushPx(200, 0, 0); | |||
} else { | |||
lcd_pushPx(0, 0, 0); | |||
} | |||
} | |||
printf("\n"); | |||
} | |||
} | |||
void lcd_printChar(uint8 x, uint8 y, char c) | |||
{ | |||
lcd_setWindow(x, y, x+8 - 1, y+8 - 1); | |||
lcd_pushChar(c); | |||
} | |||
void lcd_printText(uint8 x, uint8 y, char* text) | |||
{ | |||
for (int i = 0; i < strlen(text); i++) { | |||
lcd_printChar(x + i * 8, y, text[i]); | |||
} | |||
gpio.spiDataRW(activeDisplay->channel, pixels, count * 3); | |||
} | |||
@@ -1,100 +1,4 @@ | |||
#ifndef uint8 | |||
#define uint8 unsigned char | |||
#endif | |||
typedef struct | |||
{ | |||
int cs, a0, rs; | |||
uint8 width, height; | |||
} lcd_t; | |||
#include "spilcd.h" | |||
/* | |||
* Initialize the display and create a data structure for it. | |||
* The last initialized display is active. | |||
* | |||
* Parameters: | |||
* spiSpeed - Speed of the SPI interface. | |||
* cs - Chip selection pin. | |||
* a0 - Data/Command pin. | |||
* rs - Optional reset pin. If you do not use it, enter -1. | |||
* | |||
* Return: Pointer to the structure with display data. | |||
* | |||
*/ | |||
lcd_t *lcd_init(int spiSpeed, int cs, int a0, int rs); | |||
// TODO: optional HW-specific functions | |||
/* | |||
* Reset the specified display and clear the previously assigned memory. | |||
* | |||
* Parameters: | |||
* display - Pointer to the structure with display data. | |||
* | |||
* Return: void | |||
*/ | |||
void lcd_deinit(lcd_t *display); | |||
/* | |||
* Set the drawing area on the currently active display. | |||
* | |||
* Parameters: | |||
* x1 - The X parameter of the first point. | |||
* y1 - The Y parameter of the first point. | |||
* x2 - The X parameter of the second point. | |||
* y2 - The Y parameter of the second point. | |||
* | |||
* Return: Confirmation of the occurrence or non-occurrence of an error. | |||
* 0 - The error did not occur; 1 - The error occurred. | |||
* | |||
*/ | |||
uint8 lcd_setWindow(uint8 x1, uint8 y1, uint8 x2, uint8 y2); | |||
/* | |||
* Draw one pixel on the currently active display. | |||
* The color intensity scale for a normal pixel is from 0 to 255. | |||
* The color intensity scale for the reduced pixel is from 0 to 15. | |||
* | |||
* Parameters: | |||
* x - The X parameter of the pixel. | |||
* y - The Y parameter of the pixel. | |||
* r - The intensity of the red color. | |||
* g - The intensity of the green color. | |||
* b - The intensity of the blue color. | |||
* | |||
* Return: void | |||
*/ | |||
void lcd_drawPx(uint8 x, uint8 y, uint8 r, uint8 g, uint8 b); | |||
/* | |||
* Draw a filled rectangle on the currently active display. | |||
* The color intensity scale for a normal pixel is from 0 to 255. | |||
* The color intensity scale for the reduced pixel is from 0 to 15. | |||
* | |||
* Parameters: | |||
* x - Parameter X of the upper left corner of the rectangle. | |||
* y - Parameter Y of the upper left corner of the rectangle. | |||
* w - The width of the rectangle. | |||
* h - The height of the rectangle. | |||
* r - The intensity of the red color. | |||
* g - The intensity of the green color. | |||
* b - The intensity of the blue color. | |||
* | |||
* Return: void | |||
*/ | |||
void lcd_fillRect(uint8 x, uint8 y, uint8 w, uint8 h, uint8 r, uint8 g, uint8 b); | |||
/* | |||
* Fill the entire screen with one color of the currently active display. | |||
* The color intensity scale for a normal pixel is from 0 to 255. | |||
* The color intensity scale for the reduced pixel is from 0 to 15. | |||
* | |||
* Parameters: | |||
* r - The intensity of the red color. | |||
* g - The intensity of the green color. | |||
* b - The intensity of the blue color. | |||
* | |||
* Return: void | |||
*/ | |||
void lcd_fillScreen(uint8 r, uint8 g, uint8 b); | |||
void lcd_printChar(uint8 x, uint8 y, char c); | |||
void lcd_printText(uint8 x, uint8 y, char* text); |