Delete ADB_Trackball.ino
This commit is contained in:
parent
9253386afc
commit
63f4786a16
1 changed files with 0 additions and 161 deletions
|
@ -1,161 +0,0 @@
|
|||
/*
|
||||
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.
|
||||
*/
|
||||
// This software implements an Apple ADB interface for a trackball. It uses a
|
||||
// Teensy 3.2 and is based on the code from this Imgur post https://imgur.com/a/BQjt9le
|
||||
//
|
||||
// Revision History
|
||||
// Initial Release Aug 3, 2021
|
||||
//
|
||||
#define ADB_DATA_PIN 5 // TB bidirectional data pin
|
||||
//
|
||||
// TB Constants
|
||||
int ADB_TIMEOUT = 10000;
|
||||
// TB Functions
|
||||
static void send_0bit() {
|
||||
digitalWrite(ADB_DATA_PIN, LOW);
|
||||
delayMicroseconds(65);
|
||||
digitalWrite(ADB_DATA_PIN, HIGH);
|
||||
delayMicroseconds(35);
|
||||
}
|
||||
|
||||
static void send_1bit() {
|
||||
digitalWrite(ADB_DATA_PIN, LOW);
|
||||
delayMicroseconds(35);
|
||||
digitalWrite(ADB_DATA_PIN, HIGH);
|
||||
delayMicroseconds(65);
|
||||
}
|
||||
|
||||
static void attn() {
|
||||
//delay(1);
|
||||
digitalWrite(ADB_DATA_PIN, LOW);
|
||||
delayMicroseconds(800-35);
|
||||
send_0bit();
|
||||
}
|
||||
|
||||
void send_talk_command() {
|
||||
//attn
|
||||
pinMode(ADB_DATA_PIN, OUTPUT);
|
||||
attn();
|
||||
//address (3) 0011
|
||||
//0
|
||||
send_0bit();
|
||||
send_0bit();
|
||||
send_1bit();
|
||||
send_1bit();
|
||||
//talk 11
|
||||
send_1bit();
|
||||
send_1bit();
|
||||
//register 00
|
||||
send_0bit();
|
||||
send_0bit();
|
||||
//stop bit
|
||||
send_0bit();
|
||||
//start to stop time
|
||||
delayMicroseconds(140);
|
||||
|
||||
}
|
||||
int receive_data_packet() {
|
||||
pinMode(ADB_DATA_PIN, INPUT);
|
||||
int data_time = 0;
|
||||
bool command_stop = false;
|
||||
int adb_data = 0;
|
||||
//begin reading ADB datapin
|
||||
|
||||
while(digitalRead(ADB_DATA_PIN)!=LOW && data_time < ADB_TIMEOUT){
|
||||
//wait for beginning of start bit
|
||||
data_time+=1;
|
||||
delayMicroseconds(1);
|
||||
}
|
||||
|
||||
while(digitalRead(ADB_DATA_PIN)!=HIGH && data_time < ADB_TIMEOUT){
|
||||
//wait for end of start bit
|
||||
data_time+=1;
|
||||
delayMicroseconds(1);
|
||||
}
|
||||
|
||||
while(digitalRead(ADB_DATA_PIN)!=LOW && data_time < ADB_TIMEOUT){
|
||||
//wait for beginning of first data bit
|
||||
data_time+=1;
|
||||
delayMicroseconds(1);
|
||||
}
|
||||
|
||||
//data packet
|
||||
data_time = 0;
|
||||
while(!command_stop && data_time < ADB_TIMEOUT) {
|
||||
int low = 0;
|
||||
int high = 0;
|
||||
bool bit_stop = false;
|
||||
while(!bit_stop && data_time < ADB_TIMEOUT) {
|
||||
|
||||
int adb_stream = digitalRead(ADB_DATA_PIN);
|
||||
if(adb_stream == LOW) low+=1;
|
||||
if(adb_stream == HIGH) high+=1;
|
||||
if(adb_stream == LOW && high > 0) bit_stop = true;
|
||||
if(high > 240){
|
||||
bit_stop = true;
|
||||
break;
|
||||
}
|
||||
data_time+=1;
|
||||
delayMicroseconds(1);
|
||||
}
|
||||
if(high > 240){
|
||||
command_stop = true;
|
||||
}
|
||||
//append the new data bit to adb_data
|
||||
if(high > low && !command_stop) adb_data = (adb_data << 1) + 1;
|
||||
if(low > high && !command_stop) adb_data = adb_data << 1;
|
||||
|
||||
}
|
||||
//stop bit
|
||||
return adb_data;
|
||||
}
|
||||
|
||||
void parse_data(int data) {
|
||||
if(data !=0) {
|
||||
int mousex = data & 0b0000000001111111;
|
||||
int mousey = (data >> 8) & 0b01111111;
|
||||
//the mouse value is
|
||||
//7 bit two's complement
|
||||
if((mousey & 0b1000000) != 0) {
|
||||
mousey = ((~mousey + 1) & 0b01111111) * -1;
|
||||
}
|
||||
if((mousex & 0b1000000) != 0) {
|
||||
mousex = ((~mousex + 1) & 0b01111111) * -1;
|
||||
}
|
||||
Mouse.move(mousex, mousey);
|
||||
Mouse.move(mousex, mousey);
|
||||
|
||||
int mouseClick = data & 0b1000000000000000;
|
||||
|
||||
if(mouseClick == 0) {
|
||||
Mouse.set_buttons(1,0,0);
|
||||
}
|
||||
else if(mouseClick != 0) {
|
||||
Mouse.set_buttons(0,0,0);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
//
|
||||
//----------------------------------Setup-------------------------------------------
|
||||
void setup() {
|
||||
|
||||
}
|
||||
//
|
||||
//---------------------------------Main Loop---------------------------------------------
|
||||
//
|
||||
void loop() {
|
||||
send_talk_command();
|
||||
parse_data(receive_data_packet());
|
||||
//
|
||||
delay(20); //
|
||||
}
|
Loading…
Reference in a new issue