[求助】 linux Led实验，所有X=0的点都无法显示

dudubear

LED实验，画点测试。所有X=0的点都无法显示，感觉像是X=0的那部分液晶点全部坏掉了一样。很奇怪。
点击看大图

M1

M2

代码如下：


// 画点
void lcd_draw_point(unsigned int x, unsigned int y, unsigned int color) {
    unsigned int* p = (unsigned int*)(tftlcd_dev.frame_buffer + tftlcd_dev.pixel_size * (tftlcd_dev.width * y + x));
    *p = color;
}
// 读点
unsigned int lcd_read_point(unsigned int x, unsigned int y) {
    unsigned int* p = (unsigned int*)(tftlcd_dev.frame_buffer + tftlcd_dev.pixel_size * (tftlcd_dev.width * y + x));
    return *p;
}
void clean_screen(unsigned int color) {
    unsigned int size = tftlcd_dev.width * tftlcd_dev.height;
    unsigned int* p = (unsigned int*)tftlcd_dev.frame_buffer;
    unsigned int i;
    for (i = 0; i < size; i++) {
        p = color;
    }
}