spi: - id: spi_st7920 clk_pin: 14 mosi_pin: 13 miso_pin: 12 display: - platform: st7920 cs_pin: 15 height: 128 width: 64 pages: - id: page1 lambda: |- it.rectangle(0, 0, it.get_width(), it.get_height()); - id: page2 lambda: |- it.rectangle(0, 0, it.get_width(), it.get_height()); on_page_change: from: page1 to: page2 then: lambda: |- ESP_LOGD("display", "1 -> 2");