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