oled.h

/*
 * Copyright © 2020-2023 Synthstrom Audible Limited
 *
 * This file is part of The Synthstrom Audible Deluge Firmware.
 *
 * The Synthstrom Audible Deluge Firmware is free software: you can redistribute it and/or modify it under the
 * terms of the GNU General Public License as published by the Free Software Foundation,
 * either version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program.
 * If not, see <https://www.gnu.org/licenses/>.
 */
 
#pragma once
#include "stdbool.h"
#include "stdint.h"
 
#define OLED_FRAME_QUEUE_SIZE 32
 
// The SPI transfer queue now only ever carries OLED frames: each slot is a pointer to the frame
// image to DMA out, or NULL for a consumed/empty slot. (CV words bypass this queue entirely via the
// priority slot in oled_low_level.c.)
void oledMainInit();
void oledDMAInit();
void enqueueOLEDFrame(const uint8_t* image);
void oledTransferComplete(uint32_t int_sense);
 
extern volatile bool spiBusCurrentlySending;
extern volatile uint8_t oledFrameQueueReadPos;
extern uint8_t oledFrameQueueWritePos;
 
extern const uint8_t* oledFrameQueue[OLED_FRAME_QUEUE_SIZE];