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关于GD32F450VET6参数问题

lsnina2021-06-01

代码中关于位置的参数关系，还有含义，有谁能知道呢？

/* TLI layer1 configuration */
tli_layer_init_struct.layer_window_leftpos = 80 + HORIZONTAL_SYNCHRONOUS_PULSE + HORIZONTAL_BACK_PORCH;
tli_layer_init_struct.layer_window_rightpos = (80 + 247 + HORIZONTAL_SYNCHRONOUS_PULSE + HORIZONTAL_BACK_PORCH - 1);
tli_layer_init_struct.layer_window_toppos = 20 + VERTICAL_SYNCHRONOUS_PULSE + VERTICAL_BACK_PORCH;
tli_layer_init_struct.layer_window_bottompos = 20 + 118 + VERTICAL_SYNCHRONOUS_PULSE + VERTICAL_BACK_PORCH - 1;
tli_layer_init_struct.layer_ppf = LAYER_PPF_RGB565;
tli_layer_init_struct.layer_sa = 0xff;

tli_layer_init_struct.layer_acf1 = LAYER_ACF1_PASA;
tli_layer_init_struct.layer_acf2 = LAYER_ACF2_PASA;

tli_layer_init_struct.layer_default_alpha = 0x80; //显示范围以外的透明度
tli_layer_init_struct.layer_default_blue = 0;          //显示范围以外的背景蓝色
tli_layer_init_struct.layer_default_green = 0;       //显示范围以外的背景绿色
tli_layer_init_struct.layer_default_red = 0;          //显示范围以外的背景红色


tli_layer_init_struct.layer_frame_bufaddr = (uint32_t)&blended_address_buffer;
tli_layer_init_struct.layer_frame_line_length = ((247 * 2) + 3);
tli_layer_init_struct.layer_frame_buf_stride_offset = (247 * 2);
tli_layer_init_struct.layer_frame_total_line_number = 118;
tli_layer_init(LAYER1, &tli_layer_init_struct);

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