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V2.1 18.07.20 added support for ESP8266 based Wifi Kit 8

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(by Pulsar07/           (https://heltec.org/project/wifi-kit-8/)
   R.Stransky             is a ESP8266 with
                          * a build in OLED 128x32
                          * battery connector with charging management
                          * reset and GPIO0 button
                        support for a tare button (PIN_TARE_BUTTON)
                        bug fixed: wifi password now with up to 64 chars
                        bug fixed: wifi data (ssid/passwd) with special
                          character (e.g. +) is now supported
                        for specified battery type, voltage is displayed
                        using uncompressed html files makes WEB GUI much faster
This commit is contained in:
Rainer Stransky
2020-07-18 12:31:16 +02:00
parent 1ce3c18ada
commit 3cf22bb65a
9 changed files with 2759 additions and 135 deletions
Download Patch File Download Diff File Expand all files Collapse all files

377
CG_scale.ino
View File

@@ -4,11 +4,23 @@
(c) 2019 by M. Lehmann
------------------------------------------------------------------
*/
#define CGSCALE_VERSION "2.0"
#define CGSCALE_VERSION "2.1"
/*
******************************************************************
history:
V2.1 18.07.20 added support for ESP8266 based Wifi Kit 8
(by Pulsar07/ (https://heltec.org/project/wifi-kit-8/)
R.Stransky is a ESP8266 with
* a build in OLED 128x32
* battery connector with charging management
* reset and GPIO0 button
support for a tare button (PIN_TARE_BUTTON)
bug fixed: wifi password now with up to 64 chars
bug fixed: wifi data (ssid/passwd) with special
character (e.g. +) is now supported
for specified battery type, voltage is displayed
using uncompressed html files makes WEB GUI much faster
V2.0 26.01.20 Webpage rewritten, no bootstrap framework needed
add translation to webpage (en, de)
optimized for measuring with landinggears
@@ -155,6 +167,206 @@ void(* resetCPU) (void) = 0;
void resetCPU() {}
#endif
void initOLED() {
oledDisplay.begin();
const uint8_t *font;
font = u8g2_font_6x12_tr;
int displayHeight = oledDisplay.getDisplayHeight();
int displayWidth = oledDisplay.getDisplayWidth();
if (displayHeight <= 32) {
font = u8g2_font_6x12_tr;
}
int ylineHeight = displayHeight/3;
oledDisplay.firstPage();
do {
if (displayHeight <= 32) {
oledDisplay.drawXBMP(5, 0, 18, 18, CGImage);
} else {
oledDisplay.drawXBMP(20, 12, 18, 18, CGImage);
}
oledDisplay.setFont(u8g2_font_helvR12_tr);
if (displayHeight <= 32) {
oledDisplay.setCursor(30, 12);
} else {
oledDisplay.setCursor(45, 28);
}
oledDisplay.print(F("CG scale"));
oledDisplay.setFont(u8g2_font_5x7_tr);
if (displayHeight <= 32) {
oledDisplay.setCursor(30, 22);
} else {
oledDisplay.setCursor(35, 55);
}
oledDisplay.print(F("Version: "));
oledDisplay.print(CGSCALE_VERSION);
if (displayHeight <= 32) {
oledDisplay.setCursor(5, 31);
} else {
oledDisplay.setCursor(20, 64);
}
oledDisplay.print(F("(c) 2019 M.Lehmann et al."));
} while ( oledDisplay.nextPage() );
}
void printOLED(String aLine1, String aLine2, String aLine3=String(""));
void printOLED(String aLine1, String aLine2, String aLine3) {
const uint8_t *font;
font = u8g2_font_6x12_tr;
int displayHeight = oledDisplay.getDisplayHeight();
int displayWidth = oledDisplay.getDisplayWidth();
font = u8g2_font_helvR10_tr;
if (displayHeight <= 32) {
font = u8g2_font_6x12_tr;
}
int ylineHeight = displayHeight/3;
oledDisplay.firstPage();
do {
oledDisplay.setFont(u8g2_font_6x12_tr);
oledDisplay.setCursor(0, ylineHeight*1);
oledDisplay.print(aLine1);
oledDisplay.setCursor(0, ylineHeight*2);
oledDisplay.print(aLine2);
if (aLine3 == "") {
oledDisplay.drawLine(0, ylineHeight*2 + 2, displayWidth, ylineHeight*2+2);
oledDisplay.setFont(u8g2_font_4x6_tr);
oledDisplay.setCursor(0, displayHeight);
String signature = "CG scale: V" + String(CGSCALE_VERSION);
oledDisplay.setCursor(displayWidth - oledDisplay.getStrWidth(signature.c_str()), displayHeight);
oledDisplay.print(signature);
} else {
oledDisplay.setCursor(0, displayHeight);
oledDisplay.print(aLine3);
}
} while ( oledDisplay.nextPage() );
}
void printScaleOLED() {
// print to display
char buff[8];
int pos_weightTotal = 7;
int pos_CG_length = 28;
if (nLoadcells == 2) {
pos_weightTotal = 17;
pos_CG_length = 45;
if (batType == 0) {
pos_weightTotal = 12;
pos_CG_length = 40;
}
}
const uint8_t *font;
int linestart = 14;
int linedist = 25;
int col0=0;
int col1=28;
font = u8g2_font_helvR12_tr;
if (oledDisplay.getDisplayHeight() <=32) {
font = u8g2_font_6x12_tr;
linestart = 8;
linedist = 12;
col0=0;
col1=28;
}
oledDisplay.firstPage();
do {
if (errMsgCnt == 0) {
// print battery
if (batType > B_OFF) {
oledDisplay.drawXBMP(48, 1, 12, 6, batteryImage);
float percentVolt = percentBat(batVolt / batCells);
dtostrf(percentVolt, 3, 0, buff);
oledDisplay.drawBox(49, 2, (percentVolt / (100 / 8)), 4);
oledDisplay.setFont(u8g2_font_5x7_tr);
oledDisplay.setCursor(78 - oledDisplay.getStrWidth(buff), 7);
if (batType > B_VOLT) {
dtostrf(percentVolt, 3, 0, buff);
oledDisplay.print(buff);
oledDisplay.print(F("%/"));
}
dtostrf(batVolt, 2, 2, buff);
oledDisplay.print(buff);
oledDisplay.print(F("V"));
}
// print total weight
oledDisplay.setFont(font);
if (oledDisplay.getDisplayHeight() <= 32) {
oledDisplay.setCursor(1, 18);
oledDisplay.print(F("M = "));
} else {
oledDisplay.drawXBMP(2, pos_weightTotal, 18, 18, weightImage);
oledDisplay.setCursor(93 - oledDisplay.getStrWidth(buff), pos_weightTotal + 17);
}
dtostrf(weightTotal, 5, 1, buff);
oledDisplay.print(buff);
oledDisplay.print(F("g"));
// print CG longitudinal axis
if (oledDisplay.getDisplayHeight() <=32) {
oledDisplay.setCursor(1, 32);
oledDisplay.print(F("CG = "));
} else {
oledDisplay.drawXBMP(2, pos_CG_length, 18, 18, CGImage);
oledDisplay.setCursor(93 - oledDisplay.getStrWidth(buff), pos_CG_length + 16);
}
dtostrf(CG_length, 5, 1, buff);
oledDisplay.print(buff);
oledDisplay.print(F("mm"));
// print CG transverse axis
if (nLoadcells == 3) {
if (oledDisplay.getDisplayHeight() <=32) {
oledDisplay.setCursor(78, 32);
oledDisplay.print(F("LR="));
dtostrf(CG_trans, 3, 0, buff);
} else {
oledDisplay.drawXBMP(2, 47, 18, 18, CGtransImage);
oledDisplay.setCursor(93 - oledDisplay.getStrWidth(buff), 64);
dtostrf(CG_trans, 5, 1, buff);
}
oledDisplay.print(buff);
oledDisplay.print(F("mm"));
}
} else {
oledDisplay.setFont(u8g2_font_5x7_tr);
for (int i = 1; i <= errMsgCnt; i++) {
oledDisplay.setCursor(0, 7 * i);
oledDisplay.print(errMsg[i]);
}
}
} while ( oledDisplay.nextPage() );
}
#ifdef PIN_TARE_BUTTON
void handleTareBtn() {
static unsigned long lastTaraBtn = 0;
if ((millis() - lastTaraBtn) > 20) {
lastTaraBtn = millis();
static int tareBtnCnt = 0;
if(digitalRead(PIN_TARE_BUTTON)) {
tareBtnCnt = 0;
} else {
tareBtnCnt++;
if (tareBtnCnt > 10) {
Serial.println("tare button pressed");
printOLED("TARE ==>"," tare load cells ...");
// avoid keybounce
tareBtnCnt = -1000;
tareLoadcells();
delay(2000);
}
}
}
}
#endif
// save calibration factor
void saveCalFactor(int nLC) {
@@ -278,8 +490,9 @@ int percentBat(float cellVoltage) {
void setup() {
// init serial
Serial.begin(9600);
Serial.begin(115200);
Serial.println();
delay(1000);
#if defined(ESP8266)
printConsole(T_BOOT, "startup CG scale V" + String(CGSCALE_VERSION));
@@ -367,23 +580,9 @@ void setup() {
// init OLED display
#if defined(ESP8266)
printConsole(T_BOOT, "init OLED display");
printConsole(T_BOOT, "init OLED display: " + String(oledDisplay.getDisplayWidth())+ String("x") + String(oledDisplay.getDisplayHeight()));
#endif
oledDisplay.begin();
oledDisplay.firstPage();
do {
oledDisplay.drawXBMP(20, 12, 18, 18, CGImage);
oledDisplay.setFont(u8g2_font_helvR12_tr);
oledDisplay.setCursor(45, 28);
oledDisplay.print(F("CG scale"));
oledDisplay.setFont(u8g2_font_5x7_tr);
oledDisplay.setCursor(35, 55);
oledDisplay.print(F("Version: "));
oledDisplay.print(CGSCALE_VERSION);
oledDisplay.setCursor(20, 64);
oledDisplay.print(F("(c) 2019 M. Lehmann"));
} while ( oledDisplay.nextPage() );
initOLED();
// init & tare Loadcells
for (int i = LC1; i <= LC3; i++) {
@@ -408,6 +607,7 @@ void setup() {
#if defined(ESP8266)
// Start by connecting to a WiFi network
WiFi.persistent(false);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid_STA, password_STA);
@@ -417,18 +617,20 @@ void setup() {
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
if (WiFi.status() == WL_NO_SSID_AVAIL) {
printConsole(T_ERROR, "Wifi: No SSID available");
printConsole(T_ERROR, "\nWifi: No SSID available");
break;
} else if (WiFi.status() == WL_CONNECT_FAILED) {
printConsole(T_ERROR, "Wifi: Connection failed");
printConsole(T_ERROR, "\nWifi: Connection failed");
break;
} else if ((millis() - timeoutWiFi) > TIMEOUT_CONNECT) {
printConsole(T_ERROR, "Wifi: Timeout");
printConsole(T_ERROR, "\nWifi: Timeout");
break;
}
}
if (WiFi.status() != WL_CONNECTED) {
// if WiFi not connected, switch to access point mode
wifiSTAmode = false;
@@ -457,34 +659,16 @@ void setup() {
}
#endif
if (wifiSTAmode) {
printOLED("WiFi: " + String(ssid_STA),
"Host: " + String(hostname),
"IP : " + WiFi.localIP().toString());
} else {
printOLED("WiFi: " + String(ssid_AP),
"Host: " + String(hostname),
"IP : " + WiFi.softAPIP().toString());
}
// print wifi status
oledDisplay.firstPage();
do {
oledDisplay.setFont(u8g2_font_5x7_tr);
oledDisplay.setCursor(0, 14);
oledDisplay.print(F("WiFi:"));
oledDisplay.setCursor(0, 39);
oledDisplay.print(F("Host:"));
oledDisplay.setCursor(0, 64);
oledDisplay.print(F("IP:"));
oledDisplay.setFont(u8g2_font_helvR10_tr);
oledDisplay.setCursor(28, 14);
if (wifiSTAmode) {
oledDisplay.print(ssid_STA);
} else {
oledDisplay.print(ssid_AP);
}
oledDisplay.setCursor(28, 39);
oledDisplay.print(hostname);
oledDisplay.setCursor(28, 64);
if (wifiSTAmode) {
oledDisplay.print(WiFi.localIP());
} else {
oledDisplay.print(WiFi.softAPIP());
}
} while ( oledDisplay.nextPage() );
delay(3000);
// When the client requests data
@@ -589,6 +773,10 @@ void loop() {
server.handleClient();
#endif
#ifdef PIN_TARE_BUTTON
handleTareBtn();
#endif
updateLoadcells();
// update loadcell values
@@ -606,6 +794,7 @@ void loop() {
}
}
// update display and serial menu
if ((millis() - lastTimeMenu) > UPDATE_INTERVAL_OLED_MENU) {
@@ -642,80 +831,10 @@ void loop() {
// read battery voltage
if (batType > B_OFF) {
batVolt = (analogRead(VOLTAGE_PIN) / 1024.0) * V_REF * ((resistor[R1] + resistor[R2]) / resistor[R2]) / 1000.0;
#if ENABLE_PERCENTLIST
if (batType > B_VOLT) {
batVolt = percentBat(batVolt / batCells);
}
#endif
}
// print to display
char buff[8];
int pos_weightTotal = 7;
int pos_CG_length = 28;
if (nLoadcells == 2) {
pos_weightTotal = 17;
pos_CG_length = 45;
if (batType == 0) {
pos_weightTotal = 12;
pos_CG_length = 40;
}
}
printScaleOLED();
oledDisplay.firstPage();
do {
if (errMsgCnt == 0) {
// print battery
if (batType > B_OFF) {
oledDisplay.drawXBMP(88, 1, 12, 6, batteryImage);
if (batType == B_VOLT) {
dtostrf(batVolt, 2, 2, buff);
} else {
dtostrf(batVolt, 3, 0, buff);
oledDisplay.drawBox(89, 2, (batVolt / (100 / 8)), 4);
}
oledDisplay.setFont(u8g2_font_5x7_tr);
oledDisplay.setCursor(123 - oledDisplay.getStrWidth(buff), 7);
oledDisplay.print(buff);
if (batType == B_VOLT) {
oledDisplay.print(F("V"));
} else {
oledDisplay.print(F("%"));
}
}
// print total weight
oledDisplay.drawXBMP(2, pos_weightTotal, 18, 18, weightImage);
dtostrf(weightTotal, 5, 1, buff);
oledDisplay.setFont(u8g2_font_helvR12_tr);
oledDisplay.setCursor(93 - oledDisplay.getStrWidth(buff), pos_weightTotal + 17);
oledDisplay.print(buff);
oledDisplay.print(F(" g"));
// print CG longitudinal axis
oledDisplay.drawXBMP(2, pos_CG_length, 18, 18, CGImage);
dtostrf(CG_length, 5, 1, buff);
oledDisplay.setCursor(93 - oledDisplay.getStrWidth(buff), pos_CG_length + 16);
oledDisplay.print(buff);
oledDisplay.print(F(" mm"));
// print CG transverse axis
if (nLoadcells == 3) {
oledDisplay.drawXBMP(2, 47, 18, 18, CGtransImage);
dtostrf(CG_trans, 5, 1, buff);
oledDisplay.setCursor(93 - oledDisplay.getStrWidth(buff), 64);
oledDisplay.print(buff);
oledDisplay.print(F(" mm"));
}
} else {
oledDisplay.setFont(u8g2_font_5x7_tr);
for (int i = 1; i <= errMsgCnt; i++) {
oledDisplay.setCursor(0, 7 * i);
oledDisplay.print(errMsg[i]);
}
}
} while ( oledDisplay.nextPage() );
// serial connection
if (Serial) {
@@ -838,7 +957,7 @@ void loop() {
switch (menuPage)
{
case MENU_HOME: {
Serial.print(F("\n\n********************************************\nCG scale by M.Lehmann - V"));
Serial.print(F("\n\n********************************************\nCG scale by M.Lehmann et al. - V"));
Serial.print(CGSCALE_VERSION);
Serial.print(F("\n\n"));
@@ -1111,10 +1230,16 @@ void getValue() {
response += buff;
response += "V";
} else {
dtostrf(batVolt, 5, 0, buff);
float percentVolt = percentBat(batVolt / batCells);
dtostrf(percentVolt, 5, 0, buff);
response += buff;
response += "%";
response += "%/";
dtostrf(batVolt, 5, 2, buff);
response += buff;
response += "V";
}
Serial.print("send response: ");
Serial.println(response);
server.send(200, "text/html", response);
}
@@ -1137,9 +1262,13 @@ void getRawValue() {
response += buff;
response += "V";
} else {
dtostrf(batVolt, 5, 0, buff);
float percentVolt = percentBat(batVolt / batCells);
dtostrf(percentVolt, 5, 0, buff);
response += buff;
response += "%";
response += "%/";
dtostrf(batVolt, 5, 2, buff);
response += buff;
response += "V";
}
server.send(200, "text/html", response);
}