128 lines
2.9 KiB
Arduino
128 lines
2.9 KiB
Arduino
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/*
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* NOTE: Button center is positive wire. Borders eq. ground
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*/
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#include "OneWire.h"
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#define used_pin 10
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#define _DEBUG
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// KEY_TO_WRITE. SET KEY YOU WANNA WRITE RIGHT HERE
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byte key_to_write[] = { 0x01, 0x5F, 0x69, 0xB, 0x1, 0x0, 0x0, 0xEA };
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OneWire ds(used_pin); // pin 10 is 1-Wire interface pin now
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void setup(void) {
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Serial.begin(9600);
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}
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void loop(void) {
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byte i;
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byte read_data[8];
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delay(1000); // 1 sec
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read_key(read_data);
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if (print_key_connected_status(read_data))
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return;
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print_key(read_data, 8);
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if (validate_key(read_data))
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return;
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if (!checkTypeRW1990()){
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Serial.println("Not RW1990. Not supported.");
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return;
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}
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// UNCOMMENT THIS SECTION FOR FLASHING KEY
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/*
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flash();
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read_key(read_data);
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print_key(read_data, 8);
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*/
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}
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void read_key(byte* read_data){
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ds.reset();
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ds.write(0x33); // "READ" command
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ds.read_bytes(read_data, 8);
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}
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boolean print_key_connected_status(byte read_data[]){
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// Check if FF:FF:FF:FF:FF:FF:FF:FF . MOST LIKELY (but not always) NOTHING IS PLUGGED IN
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if (read_data[0] & read_data[1] & read_data[2] & read_data[3] & read_data[4] & read_data[5] & read_data[6] & read_data[7] == 0xFF){
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Serial.print(".");
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return true;
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}
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return false;
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}
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void print_key(byte *key_array, int size){
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Serial.println();
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Serial.print("[");
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for(int i = 0; i < size; i++) {
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Serial.print(key_array[i], HEX);
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if (i != 7)
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Serial.print(":");
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}
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Serial.println("]");
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}
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boolean validate_key(byte read_data[]){
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// Check if read key is equal to one that has to be programmed
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for (int i = 0; i < 8; i++){
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if (read_data[i] != key_to_write[i])
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return false;
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}
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Serial.print(" programmed to KEY requested");
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return true;
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}
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boolean checkTypeRW1990(){
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ds.reset();
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ds.write(0xD1); // attend to remove write flag
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ds.write_bit(1);
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delay(10);
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pinMode(used_pin, INPUT);
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ds.reset();
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ds.write(0xB5); // Request write flag stat
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byte reply = ds.read();
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#ifdef DEBUG
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Serial.print("Reply RW-1990.1: ");
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Serial.println(reply, HEX);
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#endif
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if (reply == 0xFE) // 0xFE eq. RW-1990, RW-1990.1, ТМ-08, ТМ-08v2
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return true;
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return false;
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}
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void flash(){
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ds.reset();
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ds.write(0xD1); // write command
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ds.write_bit(0);
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delay(10);
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pinMode(used_pin, INPUT);
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ds.reset();
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ds.write(0xD5);
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for (byte i = 0; i < 8; i++){
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BurnByte(~key_to_write[i]); // invert 4 RW1990.1
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Serial.print('+');
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}
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ds.write(0xD1); // write flag
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ds.write_bit(1); // stop
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pinMode(used_pin, INPUT);
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delay(10);
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}
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void BurnByte(byte data){
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for(byte n_bit = 0; n_bit < 8; n_bit++){
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ds.write_bit(data & 1);
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delay(5); // даем время на прошивку каждого бита до 10 мс
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data = data >> 1; // переходим к следующему bit
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}
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pinMode(used_pin, INPUT);
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}
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