drivers: display: Add SDL implementation example (ab4023c4) · Commits · Wenxi XU / zephyr

drivers/display/display_sdl.c

+40 −0

Original line number	Diff line number	Diff line
		@@ -428,6 +428,45 @@ static int sdl_display_read(const struct device *dev, const uint16_t x,
		return 0;
		}

		static int sdl_display_clear(const struct device *dev)
		{
		const struct sdl_display_config *config = dev->config;
		struct sdl_display_data *disp_data = dev->data;
		uint8_t bgcolor = 0x00u;
		size_t size;

		LOG_DBG("Clearing display screen to black");

		switch (disp_data->current_pixel_format) {
		case PIXEL_FORMAT_ARGB_8888:
		size = config->width * config->height * 4U;
		bgcolor = 0xFFu;
		break;
		case PIXEL_FORMAT_RGB_888:
		size = config->width * config->height * 3U;
		break;
		case PIXEL_FORMAT_MONO10:
		size = config->height * DIV_ROUND_UP(config->width,
		NUM_BITS(uint8_t));
		break;
		case PIXEL_FORMAT_MONO01:
		size = config->height * DIV_ROUND_UP(config->width,
		NUM_BITS(uint8_t));
		bgcolor = 0xFFu;
		break;
		case PIXEL_FORMAT_RGB_565:
		case PIXEL_FORMAT_BGR_565:
		size = config->width * config->height * 2U;
		break;
		default:
		LOG_ERR("Pixel format not supported");
		}
		LOG_DBG("size: %zu, bgcolor: %hhu", size, bgcolor);
		memset(disp_data->buf, bgcolor, size);

		return 0;
		}

		static int sdl_display_blanking_off(const struct device *dev)
		{
		struct sdl_display_data *disp_data = dev->data;
		@@ -506,6 +545,7 @@ static DEVICE_API(display, sdl_display_api) = {
		.blanking_off = sdl_display_blanking_off,
		.write = sdl_display_write,
		.read = sdl_display_read,
		.clear = sdl_display_clear,
		.get_capabilities = sdl_display_get_capabilities,
		.set_pixel_format = sdl_display_set_pixel_format,
		};