140 lines
2.9 KiB
C++
140 lines
2.9 KiB
C++
#include <avr/io.h>
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#include <util/delay.h>
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#define DDR_SPI DDRB
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#define DD_MOSI PB3
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#define DD_MISO PB4
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#define DD_SCK PB5
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#define DD_SS PB2
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static int index = 0;
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static int arIndex = 0;
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static byte data[255];
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static byte ar1[5];
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static byte ar2[5];
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static byte ar3[5];
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void SPI_SlaveInit(void)
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{
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DDR_SPI = (1 << DD_MISO);
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SPCR = (1 << SPE) | (1 << SPIE);
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}
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ISR(SPI_STC_vect)
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{
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char received = SPDR;
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data[index] = received;
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index++;
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}
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void setup()
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{
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Serial.begin(2000000);
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SPI_SlaveInit();
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Serial.println();
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Serial.println("Initialization ");
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}
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void SetCommand(byte *data2){
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byte command = data2[0];
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// Отрезать 1 элемент от оставшихся
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byte result[index];
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byte *ptr = &data2[1];
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strcpy(result, ptr);
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Serial.print("\nReceived command: ");
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Serial.println(command);
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switch (command){
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case 6:
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AddSymbol(result);
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break;
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}
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}
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void AddSymbol(byte *symbols){
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Serial.print("Received Add: ");
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for(int i = 0; i < index - 1; i++) {
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Serial.print(symbols[i]);
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Serial.print(" ");
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}
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}
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// Функция для вычисления контрольной суммы XOR
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byte calculateXORChecksum(byte *data, int length) {
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byte checksum = 0;
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for (int i = 0; i < length - 1; i++) {
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checksum ^= data[i];
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}
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return checksum;
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}
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void arrayOut(byte *arr,int size){
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Serial.print("Array: ");
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for(int i = 0;i<size;i++){
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Serial.print(arr[i]);
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Serial.print(" ");
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}
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Serial.println(".");
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}
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void loop() {
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if(PINB & (1 << 2))
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{
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if(index > 0)
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{
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// byte calculatedChecksum = calculateXORChecksum(data, index-1);
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// byte last = data[index - 1];
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// Serial.println();
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// Serial.println("--------------");
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// Serial.print("\n Last: ");
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// Serial.print(last);
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// Serial.print("\t Sum: ");
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// Serial.println(calculatedChecksum);
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// if (last != calculatedChecksum)
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// {
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// Serial.println("\n -----Invalid Checksum!---");
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// SPDR = calculatedChecksum;
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// index = 0;
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// return;
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// }
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//SetCommand(data);
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if (arIndex == 0){
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arIndex = 1;
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memcpy(ar1,data,5);
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}else{
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if(arIndex == 1){
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arIndex = 2;
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memcpy(ar2,data,5);
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}else{
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arIndex = 0;
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memcpy(ar3,data,5);
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}
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}
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byte sum = 0;
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Serial.println();
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Serial.println("Старт вывода массивов");
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arrayOut(ar1,5);
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sum = calculateXORChecksum(ar1,5);
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Serial.println(sum);
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arrayOut(ar2,5);
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sum = calculateXORChecksum(ar2,5);
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Serial.println(sum);
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arrayOut(ar3,5);
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sum = calculateXORChecksum(ar3,5);
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Serial.println(sum);
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Serial.println("Стоп вывода массивов");
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index=0;
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}
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}
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}
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