stm32 TLT LCD 数组上下滚动代码
时间: 2023-08-11 20:03:37 浏览: 49
下面是一个简单的示例代码,演示如何在STM32上实现TLT LCD数组的上下滚动。这个代码需要使用STM32 HAL库和TLT LCD库。
```c
#include "stm32f4xx_hal.h"
#include "tlt_lcd.h"
#define LCD_WIDTH 320
#define LCD_HEIGHT 240
#define SCROLL_STEP 5
#define SCROLL_DELAY 100
uint16_t lcd_buf[LCD_WIDTH * LCD_HEIGHT];
void scroll_up(void) {
int i, j;
for (i = SCROLL_STEP; i < LCD_HEIGHT; i++) {
for (j = 0; j < LCD_WIDTH; j++) {
lcd_buf[(i - SCROLL_STEP) * LCD_WIDTH + j] = lcd_buf[i * LCD_WIDTH + j];
}
}
for (i = LCD_HEIGHT - SCROLL_STEP; i < LCD_HEIGHT; i++) {
for (j = 0; j < LCD_WIDTH; j++) {
lcd_buf[i * LCD_WIDTH + j] = 0;
}
}
}
void scroll_down(void) {
int i, j;
for (i = LCD_HEIGHT - SCROLL_STEP - 1; i >= 0; i--) {
for (j = 0; j < LCD_WIDTH; j++) {
lcd_buf[(i + SCROLL_STEP) * LCD_WIDTH + j] = lcd_buf[i * LCD_WIDTH + j];
}
}
for (i = 0; i < SCROLL_STEP; i++) {
for (j = 0; j < LCD_WIDTH; j++) {
lcd_buf[i * LCD_WIDTH + j] = 0;
}
}
}
int main(void) {
HAL_Init();
TLT_LCD_Init();
TLT_LCD_Rotate(TLT_LCD_Rotation_0);
// 初始化屏幕内容
int i, j;
for (i = 0; i < LCD_HEIGHT; i++) {
for (j = 0; j < LCD_WIDTH; j++) {
lcd_buf[i * LCD_WIDTH + j] = TLT_LCD_Color565(255, 255, 255);
}
}
while (1) {
scroll_up();
TLT_LCD_DrawBuffer(0, 0, LCD_WIDTH, LCD_HEIGHT, (uint8_t *)lcd_buf);
HAL_Delay(SCROLL_DELAY);
}
}
```
这个代码演示了如何在屏幕上实现向上滚动。如果你想要向下滚动,只需要将`scroll_up()`函数改为`scroll_down()`即可。注意,在这个代码中,我们将整个屏幕的内容都存储在`lcd_buf`数组中,然后使用`TLT_LCD_DrawBuffer()`函数将它绘制到屏幕上。