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Buffer boundary check - test 1

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GHOSCHT 2021-08-26 14:39:52 +02:00
parent 383c903aa1
commit 1c0c744983
1 changed files with 122 additions and 118 deletions
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240
Devices/Control/Firmware/src/main.cpp
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@ -1,119 +1,123 @@
#include <Arduino.h>
#include <EEPROM.h>
#include <Wire.h>
#define SLAVE_ADDR 9
const int bjtCount = 4;
const int bjtPin[bjtCount] = {6, 5, 3, 10};
int bjtState[bjtCount] = {255, 255, 255, 255}; //255 -> bjt max "open"
char receivedSerialData[4];
char receivedI2cData[4];
String pendingSerialData;
void changeLights(char data[])
{
for (int i = 0; i < bjtCount; i++)
{
char numChar[2];
itoa(i, numChar, 10);
if (data[0] == numChar[0])
{
if (data[1] == 't')
{
if (bjtState[i] != 0)
{
bjtState[i] = 0;
}
else
{
bjtState[i] = 255;
}
}
else if (data[1] == 'i')
{
bjtState[i] += 5;
}
else if (data[1] == 'd')
{
bjtState[i] -= 5;
}
}
//clamp state between 0 and 255
if (bjtState[i] > 255)
{
bjtState[i] = 255;
}
if (bjtState[i] < 0)
{
bjtState[i] = 0;
}
//set absolute state for all
if (!strcmp(data, "off"))
{
bjtState[i] = 0;
}
if (!strcmp(data, "on"))
{
bjtState[i] = 255;
}
analogWrite(bjtPin[i], bjtState[i]);
EEPROM.update(i, bjtState[i]);
}
memset(data, ' ', 3);
}
void receiveEvent(int byteCount)
{
char buffer[byteCount];
for (int i = 0; i < byteCount; i++)
{
buffer[i] = Wire.read();
}
memset(receivedI2cData, ' ', 3);
strcpy(receivedI2cData, buffer);
}
void setup()
{
Serial.begin(9600);
Serial.setTimeout(5);
Wire.begin(SLAVE_ADDR);
Wire.onReceive(receiveEvent);
for (int i = 0; i < bjtCount; i++)
{
pinMode(bjtPin[i], OUTPUT);
bjtState[i] = EEPROM.read(i);
analogWrite(bjtPin[i], bjtState[i]);
}
}
void loop()
{
while (Serial.available())
{
strcpy(receivedSerialData, Serial.readString().c_str());
}
changeLights(receivedSerialData);
changeLights(receivedI2cData);
pendingSerialData = "";
for (int i = 0; i < bjtCount; i++)
{
noInterrupts();
pendingSerialData += String(bjtState[i]) + ",";
interrupts();
}
pendingSerialData.remove(pendingSerialData.length() - 1);
Serial.println(pendingSerialData);
#include <Arduino.h>
#include <EEPROM.h>
#include <Wire.h>
#define SLAVE_ADDR 9
const int bjtCount = 4;
const int bjtPin[bjtCount] = {6, 5, 3, 10};
int bjtState[bjtCount] = {255, 255, 255, 255}; //255 -> bjt max "open"
char receivedSerialData[4];
char receivedI2cData[4];
String pendingSerialData;
void changeLights(char data[])
{
for (int i = 0; i < bjtCount; i++)
{
char numChar[2];
itoa(i, numChar, 10);
if (data[0] == numChar[0])
{
if (data[1] == 't')
{
if (bjtState[i] != 0)
{
bjtState[i] = 0;
}
else
{
bjtState[i] = 255;
}
}
else if (data[1] == 'i')
{
bjtState[i] += 5;
}
else if (data[1] == 'd')
{
bjtState[i] -= 5;
}
}
//clamp state between 0 and 255
if (bjtState[i] > 255)
{
bjtState[i] = 255;
}
if (bjtState[i] < 0)
{
bjtState[i] = 0;
}
//set absolute state for all
if (!strcmp(data, "off"))
{
bjtState[i] = 0;
}
if (!strcmp(data, "on"))
{
bjtState[i] = 255;
}
analogWrite(bjtPin[i], bjtState[i]);
EEPROM.update(i, bjtState[i]);
}
memset(data, ' ', 3);
}
void receiveEvent(int byteCount)
{
char buffer[byteCount];
for (int i = 0; i < byteCount; i++)
{
if (i == byteCount)
break;
buffer[i] = Wire.read();
}
memset(receivedI2cData, ' ', 3);
strcpy(receivedI2cData, buffer);
}
void setup()
{
Serial.begin(9600);
Serial.setTimeout(5);
Wire.begin(SLAVE_ADDR);
Wire.onReceive(receiveEvent);
for (int i = 0; i < bjtCount; i++)
{
pinMode(bjtPin[i], OUTPUT);
bjtState[i] = EEPROM.read(i);
analogWrite(bjtPin[i], bjtState[i]);
}
}
void loop()
{
while (Serial.available())
{
strcpy(receivedSerialData, Serial.readString().c_str());
}
changeLights(receivedSerialData);
changeLights(receivedI2cData);
pendingSerialData = "";
for (int i = 0; i < bjtCount; i++)
{
noInterrupts();
pendingSerialData += String(bjtState[i]) + ",";
interrupts();
}
pendingSerialData.remove(pendingSerialData.length() - 1);
Serial.println(pendingSerialData);
}