quack/main/adb.h

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/*
* adb.h
* quack
*
* Created by Michel DEPEIGE on 7/01/2021.
* Copyright (c) 2020 Michel DEPEIGE.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the Apache License, Version 2.0 (the "License");
* You may obtain a copy of the License at:
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*
* http://www.apache.org/licenses/LICENSE-2.0
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*
* 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.
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*
*/
#ifndef ADB_H
#define ADB_H
/* prototypes */
void adb_init(void);
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bool adb_is_host(void);
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void adb_task_host(void *pvParameters);
void adb_task_idle(void *pvParameters);
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void adb_tx_cmd(unsigned char cmd);
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void adb_tx_data(uint16_t data);
void adb_tx_listen(unsigned char cmd, uint16_t data);
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void adb_tx_reset(void);
/* defines */
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#define RMT_RX_CHANNEL RMT_CHANNEL_0
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#define tskADB_PRIORITY 4
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/* ADB timers */
#define ADB_RESET 3000
#define ADB_0_LOW 65
#define ADB_0_HIGH 35
#define ADB_1_LOW 35
#define ADB_1_HIGH 65
/* Classic Apple Mouse Protocol bitmasks */
#define ADB_CMP_B1 (1<<15)
#define ADB_CMP_B2 (1<<7)
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#define ADB_CMP_MX (127<<0)
#define ADB_CMP_MY (127<<8)
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/* ADB commands values from 00591b.pdf page 16-17 */
#define ADB_TALK 0xC
#define ADB_LISTEN 0x8
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#define ADB_FLUSH 0x1
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#define ADB_REG0 0x0
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#define ADB_REG3 0x3
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/* Device addresses */
#define ADB_MOUSE (3<<4)
#define ADB_TMP (9<<4)
/* Various stuff */
#define ADB_B_UP 0
#define ADB_B_DOWN 1
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#define ADB_H_ALL 0xff // Handlers bitmask
#define ADB_H_C100 0x01 // Handler 1 (Classic @ 100cpi)
#define ADB_H_C200 0x02 // Handler 2 (Classic @ 200cpi)
#define ADB_H_MOVE 0xfe // Move to another address
/* Host states */
#define ADB_S_PROBE 0x00
#define ADM_S_POLL 0x01
#define ADB_S_KEEP 0x08
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#endif