/* * Copyright 2024 Google LLC * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #pragma once #include #include #define DISP_BYTES_LINE DISP_COLS / 8 // Bytes_per_line + 1 byte for the line address + 1 byte for a null trailer + 1 optional byte for a write command #define DISP_DMA_BUFFER_SIZE (DISP_BYTES_LINE + 3) typedef struct { uint8_t address; uint8_t* data; } DisplayRow; typedef bool(*NextRowCallback)(DisplayRow* row); typedef void(*UpdateCompleteCallback)(void); typedef enum { DISPLAY_STATE_IDLE, DISPLAY_STATE_WRITING } DisplayState; typedef struct { DisplayState state; NextRowCallback get_next_row; UpdateCompleteCallback complete; } DisplayContext; void display_init(void); void display_clear(void); void display_update(NextRowCallback nrcb, UpdateCompleteCallback uccb); void display_enter_static(void); void display_pulse_vcom(void);