bool WIFI::confMode(byte a)
{
if (!wifiPresent) return false;
String data;
print("AT+CWMODE=");
println(String(a));
unsigned long start;
start = millis();
while (millis()-start<2000) {
if(_cell.available()>0)
{
char a =_cell.read();
data=data+a;
}
if (data.indexOf("OK")!=-1 || data.indexOf("no change")!=-1)
{
return true;
}
if (data.indexOf("ERROR")!=-1 || data.indexOf("busy")!=-1)
{
while(_cell.available()>0)
{
char a =_cell.read();
data=data+a;
}
DBGLN(data);
return false;
}
}
}
bool WIFI::begin(void)
{
boolean result = false;
_cell.begin(115200); //The default baud rate of ESP8266 is 115200
DebugSerial.begin(debugBaudRate);
_cell.flush();
_cell.setTimeout(3000);
println("AT+RST");
result = _cell.find("ready");
if(result)
{
DBGLN("Module is ready");
wifiPresent = true;
}
else
{
DBGLN("Module have no response");
wifiPresent = false;
}
return wifiPresent;
}
/*************************************************************************
//reboot the wifi module
***************************************************************************/
void WIFI::Reset(void)
{
if (!wifiPresent) return;
println("AT+RST");
unsigned long start;
start = millis();
while (millis()-start<5000) {
if(_cell.find("ready")==true)
{
DBGLN("reboot wifi is OK");
break;
}
}
}
int waterDo(unsigned int time)
{
if (waterLastTime != 0 && (unsigned long)(fixedMillis() - waterLastTime) < WATER_MIN_INTERVAL)
{
return ERROR_INTERVALTOOSHORT;
}
if (distanceLastValue > WATER_TANK_THRESHOLD)
{
return ERROR_NOWATER;
}
DBG("Watering: ");
relay(true);
delay(time);
relay(false);
DBGLN("done.");
// TODO(twd2): check if moisture changed
waterLastTime = fixedMillis();
return ERROR_OK;
}
/*************************************************************************
//receive message from wifi
buf: buffer for receiving data
chlID: <id>(0-4)
return: size of the buffer
***************************************************************************/
int WIFI::ReceiveMessage(char *buf)
{
if (!wifiPresent) return 0;
//+IPD,<len>:<data>
//+IPD,<id>,<len>:<data>
String data = "";
if (_cell.available()>0)
{
unsigned long start;
start = millis();
char c0 = _cell.read();
if (c0 == '+')
{
while (millis()-start<5000)
{
if (_cell.available()>0)
{
char c = _cell.read();
data += c;
}
if (data.indexOf("\nOK")!=-1)
{
break;
}
}
int sLen = strlen(data.c_str());
int i,j;
for (i = 0; i <= sLen; i++)
{
if (data[i] == ':')
{
break;
}
}
boolean found = false;
for (j = 4; j <= i; j++)
{
if (data[j] == ',')
{
found = true;
break;
}
}
int iSize;
DBGLN(data);
if(found ==true)
{
String _id = data.substring(4, j);
chlID = _id.toInt();
String _size = data.substring(j+1, i);
iSize = _size.toInt();
//DBG(_size);
String str = data.substring(i+1, i+1+iSize);
strcpy(buf, str.c_str());
//DBG(str);
}
else
{
String _size = data.substring(4, i);
iSize = _size.toInt();
//DBGLN(iSize);
String str = data.substring(i+1, i+1+iSize);
strcpy(buf, str.c_str());
//DBG(str);
}
return iSize;
}
}
return 0;
}
void WIFI::println(const String &s)
{
DBGLN(s);
_cell.println(s);
}