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esp01.cpp
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esp01.cpp
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#include <QDebug>
#include "esp01.h"
ESP01::ESP01(QObject *parent) : QObject(parent)
{
// qDebug() << Q_FUNC_INFO;
}
ESP01::~ESP01()
{
// qDebug() << Q_FUNC_INFO;
close();
}
SerialPortList ESP01::enumerateSerialPorts(bool dump)
{
auto serialPorts = QSerialPortInfo::availablePorts();
if (dump) {
for (auto serialPort : serialPorts) {
printf("%20s %40s %20s\n",
serialPort.portName().toLocal8Bit().data(),
serialPort.description().toLocal8Bit().data(),
serialPort.systemLocation().toLocal8Bit().data());
}
}
return serialPorts;
}
bool ESP01::open(QString portName)
{
if (portName.isEmpty()) {
auto portList = enumerateSerialPorts();
if (!portList.isEmpty()) {
portName = portList.at(0).systemLocation();
} else {
qDebug() << "ERROR: No serial ports found";
return false;
}
}
serPortName = portName;
serPort.setPortName(serPortName);
serPort.setBaudRate(QSerialPort::Baud115200);
serPort.setDataBits(QSerialPort::Data8);
serPort.setParity(QSerialPort::NoParity);
serPort.setStopBits(QSerialPort::OneStop);
serPort.setFlowControl(QSerialPort::NoFlowControl);
if (!serPort.open(QIODevice::ReadWrite)) {
qDebug() << "Unable to open serial port" << serPortName;
return false;
}
connect(&serPort, &QIODevice::readyRead, this, &ESP01::onReadyRead);
curState = IDLE;
return true;
}
void ESP01::close()
{
if (serPort.isOpen()) {
serPort.close();
curState = DISCONNECTED;
}
}
bool ESP01::isOpen() const {
return serPort.isOpen();
}
/**
* @brief sendCommand - send command to ESP01 Wifi device
* @param port - serial port to communicate with.
* @param cmd - String containing AT command to send.
* @param result - Array of strings returned from command
* @return - true on OK result, false on ERROR result.
*/
void ESP01::sendCommand(QString cmd) {
// bool ret = false;
if (curState != IDLE) {
qDebug() << "sendCommand() error";
// return false;
}
// result.clear();
// If the input command doesn't end with LF/CR add it to the command...
if (!cmd.endsWith("\r\n")) {
cmd += "\r\n";
}
serPort.write(cmd.toLocal8Bit());
curState = WAIT_RESULT;
#if 0
bool bDone = false;
serPort.waitForReadyRead();
QString full_line;
while (!bDone) {
QString line = QString(serPort.readLine());
line.remove("\r");
if (line == "OK\n") {
bDone = true;
ret = true;
continue;
} else if (line == "ERROR\n") {
bDone = true;
ret = false;
continue;
} else {
if (line.endsWith("\n")) {
line.remove("\n");
full_line += line;
if (!full_line.isEmpty()) {
result.push_back(full_line);
}
full_line.clear();
} else {
full_line += line;
}
}
// If we have not received the final result wait for more data to arive...
if (!serPort.bytesAvailable()) {
serPort.waitForReadyRead();
}
}
curState = IDLE;
#endif
// return ret;
}
void ESP01::onReadyRead()
{
// qDebug() << Q_FUNC_INFO;
// qDebug() << "Bytes Available " << serPort.bytesAvailable();
QString line;
line = QString(serPort.readLine()).remove("\r");
while (!line.isEmpty()) {
if (curState == WAIT_RESULT) {
// qDebug() << "RESULT >> " << line;
replyLineBuffer += line;
if (replyLineBuffer.endsWith("\n")) {
replyLineBuffer.remove("\n");
response.push_back(replyLineBuffer);
if (replyLineBuffer == "OK") {
qDebug() << "GOT OK RESPONSE";
emit commandResponse(true, response);
curState = IDLE;
response.clear();
} else if (replyLineBuffer == "ERROR") {
qDebug() << "GOT ERROR RESPONSE";
emit commandResponse(false, response);
curState = IDLE;
response.clear();
}
replyLineBuffer.clear();
}
}
line = QString(serPort.readLine()).remove("\r");
}
}