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writeOrFlush on Serial2 data handling in loop #4

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writeOrFlush on Serial2 data handling in loop #4

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234 changes: 117 additions & 117 deletions konekt_user_module_serial_gateway/konekt_user_module_serial_gateway.ino
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Original file line number Diff line number Diff line change
@@ -1,118 +1,118 @@
/* Hologram Dash User Module Cloud Serial Gateway Program
*
* Author: Hologram <[email protected]>
*
* Purpose: This firmware sends all data that comes in on a serial port to the
* Hologram Cloud. Data is sent once a newline is detected.
*
* License: Licensed under the MIT License.
*
* The MIT License (MIT)
*
* Copyright 2017 Hologram (Konekt, Inc.)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/

#define LED_DATA_INDICATOR_DURATION 200

/* globals */
unsigned ledStopMillis;
bool isHandlingData;

void setup() {
Serial2.begin(9600);
SerialUSB.begin(9600);
ledStopMillis = 0; /* LED off by default */
isHandlingData = false;
printToBoth("+++");
}

void printToBoth(String msg) {
// Write to USB and UART
Serial2.println(msg);
SerialUSB.println(msg);
}

void writeOrFlush(char cur) {
// Write each character to HologramCloud buffer and then
// send to cloud on a newline character
isHandlingData = true;
if(cur == '\n') {
printToBoth("Sending message to cloud...");
int retriesLeft = 2;
while(retriesLeft > 0) {
bool res = HologramCloud.sendMessage();
if(!res) {
String msg = "Failed. Trying ";
msg += retriesLeft + " more times";
printToBoth(msg);
} else {
printToBoth("Data sent to cloud successfully");
break;
}
retriesLeft--;
}
} else {
HologramCloud.write(cur);
setLedState();
}
}


void loop() {
char currChar;

isHandlingData = false;

while(Serial2.available()) {
writeOrFlush(Serial2.available());
}

while(SerialUSB.available()) {
writeOrFlush(SerialUSB.read());
}

while(SerialCloud.available()) {
currChar = (char)SerialCloud.read();
SerialUSB.write(currChar);
Serial2.write(currChar);
isHandlingData = true;
}

setLedState();

delay(1);
}

void setLedState() {
/* Blink LED while we're doing data operations and 200ms afterward */

if(ledStopMillis > 0 && ledStopMillis < millis()) {
Dash.offLED();
ledStopMillis = 0;
}

if(isHandlingData && ledStopMillis == 0) {
Dash.pulseLED(25, 50);
ledStopMillis = millis() + LED_DATA_INDICATOR_DURATION;
}
}
/* Hologram Dash User Module Cloud Serial Gateway Program
*
* Author: Hologram <[email protected]>
*
* Purpose: This firmware sends all data that comes in on a serial port to the
* Hologram Cloud. Data is sent once a newline is detected.
*
* License: Licensed under the MIT License.
*
* The MIT License (MIT)
*
* Copyright 2017 Hologram (Konekt, Inc.)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#define LED_DATA_INDICATOR_DURATION 200
/* globals */
unsigned ledStopMillis;
bool isHandlingData;
void setup() {
Serial2.begin(9600);
SerialUSB.begin(9600);
ledStopMillis = 0; /* LED off by default */
isHandlingData = false;
printToBoth("+++");
}
void printToBoth(String msg) {
// Write to USB and UART
Serial2.println(msg);
SerialUSB.println(msg);
}
void writeOrFlush(char cur) {
// Write each character to HologramCloud buffer and then
// send to cloud on a newline character
isHandlingData = true;
if(cur == '\n') {
printToBoth("Sending message to cloud...");
int retriesLeft = 2;
while(retriesLeft > 0) {
bool res = HologramCloud.sendMessage();
if(!res) {
String msg = "Failed. Trying ";
msg += retriesLeft + " more times";
printToBoth(msg);
} else {
printToBoth("Data sent to cloud successfully");
break;
}
retriesLeft--;
}
} else {
HologramCloud.write(cur);
setLedState();
}
}
void loop() {
char currChar;
isHandlingData = false;
while(Serial2.available()) {
writeOrFlush(Serial2.read());
}
while(SerialUSB.available()) {
writeOrFlush(SerialUSB.read());
}
while(SerialCloud.available()) {
currChar = (char)SerialCloud.read();
SerialUSB.write(currChar);
Serial2.write(currChar);
isHandlingData = true;
}
setLedState();
delay(1);
}
void setLedState() {
/* Blink LED while we're doing data operations and 200ms afterward */
if(ledStopMillis > 0 && ledStopMillis < millis()) {
Dash.offLED();
ledStopMillis = 0;
}
if(isHandlingData && ledStopMillis == 0) {
Dash.pulseLED(25, 50);
ledStopMillis = millis() + LED_DATA_INDICATOR_DURATION;
}
}