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M5Stack_BLE_client_Owon_B35T.ino
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/*
* ------------------------------------------------------------
* "THE BEERWARE LICENSE" (Revision 42):
* <Reaper7> wrote this code. As long as you retain this
* notice, you can do whatever you want with this stuff. If we
* meet someday, and you think this stuff is worth it, you can
* buy me a beer in return.
* ------------------------------------------------------------
*/
// M5Stack_BLE_client_Owon_B35T.ino
// 2023 Reaper7 (tested on M5Stack)
// part for B35TPlus based on https://github.com/DeanCording/owonb35 by DeanCording
#include <Arduino.h>
#include <WiFi.h>
#include <Wire.h>
#include <BLEDevice.h>
#include <BLEAdvertisedDevice.h>
#include <BLEClient.h>
#include <BLEScan.h>
#include <BLEUtils.h>
#include <M5Stack.h> // M5Stack lib >= 0.1.9
#include "M5StackUpdater.h" // https://github.com/tobozo/M5Stack-SD-Updater
#include "meter_graphics.h"
//#define MYDEBUG
#ifdef MYDEBUG
#define DEBUG_MSG(...) Serial.printf( __VA_ARGS__ )
#else
#define DEBUG_MSG(...)
#endif
//#define BATMETERI2C
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
const char* OWONNAME = "BDM"; // OWON device name
static BLEUUID serviceUUID("0000fff0-0000-1000-8000-00805f9b34fb"); // OWON service UUID
static BLEUUID charnotificationUUID("0000fff4-0000-1000-8000-00805f9b34fb"); // OWON notification characteristic UUID
static BLEUUID charwriteUUID("0000fff3-0000-1000-8000-00805f9b34fb"); // OWON write characteristic UUID
static BLEAddress *pServerAddress;
static BLERemoteCharacteristic* pRemoteCharacteristicNotify;
static BLERemoteCharacteristic* pRemoteCharacteristicWrite;
volatile boolean deviceBleConnected = false; // flag BLE conneted
volatile boolean newBleData = false; // flag "we get new data from meter"
static unsigned long lastBleNotify = 0; // timestamp "last received data from meter" in ms
static unsigned long startBleScanning = 0; // timestamp when ble scan is beginning in ms
const uint16_t maxWaitForNotify = 10000; // max wait time for next notify from meter in ms
const uint16_t scanTime = 10; // BLE scan time in s
const uint8_t meterReplySize = 14; // number of bytes in meter reply
char valuechar[meterReplySize]; // meter reply buffer
const uint8_t rawBufferSize = 14; // number of bytes for reading meter
char rawvalbuf[rawBufferSize]; // meter reply raw buffer
const uint8_t overLoadFrame[] = { 0x2b, 0x3f, 0x30, 0x3a, 0x3f }; // first 5 bytes of frame if overload
const uint8_t replySizeNorm = 14; // notify size for b35t
const uint8_t replySizePlus = 6; // notify size for b35tPLUS
static boolean meterIsPlus = false; // flag for meter b35tPLUS
static boolean meterPlusLowBat = false; // meter b35tPLUS Low Bat
static boolean meterPlusLowBatLast = !meterPlusLowBat;
static boolean overLoad = false; // overload flag
static boolean buzzOn = false; // buzzer on
static boolean firstNotify = true; // flag first notify after start or reconnect
//write to OWON
volatile boolean deviceBleWriteAvailable = false; // write to meter available
const uint8_t buttonsMax = 6; // max buttons available on meter
const char *btnName[] = { "SELECT", "RANGE", "HLD/LIG", "REL/BT", "HZ/DUTY", "MAX/MIN" }; // buttons name
uint8_t btnNumber = 0x01; // initial/current button number(code)
uint8_t btnShortPress = 0x01; // code for short press (one short press)
uint8_t btnLongPress = 0x00; // code for long press
const uint16_t btnLongPressTime = 1800; // long button press time in ms
const uint8_t owonBtnArraySize = 0x02; // buffer size for write to meter
uint8_t owonBtnArray[owonBtnArraySize] = {btnNumber, btnShortPress}; // output buffer for write to meter
#ifdef BATMETERI2C
// bat meter MAX17043 1-Cell Fuel Gauge
static uint16_t batReadEvery = 10000; // read MAX17043 every 10000 sec
static unsigned long batNextReadTime = 0; // time for next read MAX17043 in ms
const uint8_t MAX17043ADDR=0x36; // MAX17043 i2c addr
const uint8_t MAX17043CMDADDR=0xFE; // MAX17043 command register addr
const uint8_t MAX17043SOCADDR=0x04; // MAX17043 soc data addr
const uint8_t MAX17043VCELLADDR=0x02; // MAX17043 voltage data addr
#endif
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
/*
14 bytes reply
-----------------------------------------------------------------------
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
-----------------------------------------------------------------------
|0x2b|0x33 0x36 0x32 0x33|0x20|0x34|0x31|0x00|0x40 0x80|0x24|0x0d 0x0a|
-----------------------------------------------------------------------
| 0 | 1 2 3 4 | 5 | 6 | 7 | 8 | 9 10 | 11 | 12 13 |
-----------------------------------------------------------------------
*/
/*
1: + or - (dec 43 or 45)
BYTE 0
*/
#define REGPLUSMINUS 0x00
#define FLAGPLUS B00101011
#define FLAGMINUS B00101101
/*
2: Value 0000-9999 in dec
BYTE 1-4
*/
#define REGDIG1 0x01
#define REGDIG2 0x02
#define REGDIG3 0x03
#define REGDIG4 0x04
/*
3: Just space (dec 32)
BYTE 5
*/
/*
4: Decimal point position
- dec 48 no point
- dec 49 after the first number
- dec 50 after the second number
- dec 52 after the third number
BYTE 6
*/
#define REGPOINT 0x06
#define FLAGPOINT0 B00110000
#define FLAGPOINT1 B00110001
#define FLAGPOINT2 B00110010
#define FLAGPOINT3 B00110100
/*
5: AC or DC and Auto mode
- dec 49 DC Auto mode / 51 HOLD
- dec 41 AC Auto mode / 43 HOLD
- dec 17 DC Manual mode / 19 HOLD
- dec 09 AC Manual mode / 11 HOLD
BYTE 7
*/
#define REGMODE 0x07
#define FLAGMODENONE B00000000 //none
#define FLAGMODEMAN B00000001 //manual
#define FLAGMODEHOLD B00000010 //hold
#define FLAGMODEREL B00000100 //relative
#define FLAGMODEAC B00001000 //ac
#define FLAGMODEDC B00010000 //dc
#define FLAGMODEAUTO B00100000 //auto
#define FLAGMODECHECK B11111111 //mask for check others
/*
6: MIN MAX
- dec 0 MIN MAX off
- dec 16 MIN
- dec 32 MAX
BYTE 8
*/
#define REGMINMAX 0x08
#define FLAGMINMAXNONE B00000000
#define FLAGMIN B00010000
#define FLAGMAX B00100000
/*
7: Units
- dec 2 0 % Duty
- dec 0 1 Fahrenheit
- dec 0 2 Grad
- dec 0 4 nF
- dec 0 8 Hz
- dec 0 16 hFE
- dec 0 32 Ohm
- dec 32 32 kOhm
- dec 16 32 MOhm
- dec 128 64 uA
- dec 64 64 mA
- dec 0 64 A
- dec 64 128 mV
- dec 0 128 V
BYTES 9 & 10
*/
#define REGSCALE 0x09
#define FLAGSCALEDUTY B00000010
#define FLAGSCALEDIODE B00000100
#define FLAGSCALEBUZZ B00001000
#define FLAGSCALEMEGA B00010000
#define FLAGSCALEKILO B00100000
#define FLAGSCALEMILI B01000000
#define FLAGSCALEMICRO B10000000
#define REGUNIT 0x0a
#define FLAGUNITNONE B00000000
#define FLAGUNITFAHR B00000001
#define FLAGUNITGRAD B00000010
#define FLAGUNITNF B00000100
#define FLAGUNITHZ B00001000
#define FLAGUNITHFE B00010000
#define FLAGUNITOHM B00100000
#define FLAGUNITAMP B01000000
#define FLAGUNITVOLT B10000000
/*
8: ???
*/
/*
9: CR + LF
*/
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
uint16_t digitsFromBuff() {
uint16_t outval = 0;
if (valuechar[REGDIG1] >= 0x30 && valuechar[REGDIG1] <= 0x39)
outval += (valuechar[REGDIG1] - 0x30) * 1000;
if (valuechar[REGDIG2] >= 0x30 && valuechar[REGDIG2] <= 0x39)
outval += (valuechar[REGDIG2] - 0x30) * 100;
if (valuechar[REGDIG3] >= 0x30 && valuechar[REGDIG3] <= 0x39)
outval += (valuechar[REGDIG3] - 0x30) * 10;
if (valuechar[REGDIG4] >= 0x30 && valuechar[REGDIG4] <= 0x39)
outval += (valuechar[REGDIG4] - 0x30) * 1;
return (outval);
}
//------------------------------------------------------------------------------
float valFromDigits() {
float outval = 0.0;
if (overLoad == true) // if overloaded
return (NAN);
else {
uint8_t decpoint = valuechar[REGPOINT] & 0x07;
uint8_t decimal = 0;
switch (decpoint) {
case B001:
decimal = 1;
break;
case B010:
decimal = 2;
break;
case B100:
decimal = 3;
break;
default:
break;
}
outval = (float)digitsFromBuff() / pow(10.0, decimal);
}
//DEBUG_MSG("D: VALUE : %06.4f\n", outval);
return (outval);
}
//------------------------------------------------------------------------------
void buzzCheck() {
float val = valFromDigits();
if (buzzOn == true) {
if ((deviceBleConnected == false) || (valuechar[REGSCALE] != FLAGSCALEBUZZ) || ((valuechar[REGSCALE] == FLAGSCALEBUZZ) && (val >= 30.0)) || (overLoad == true)) {
buzzOn = false;
M5.Speaker.end();
drawIcon(WBUZZPOSX, TOPROWPOSY, ICONW, ICONH, BUZZ_BMP, (valuechar[REGSCALE] & FLAGSCALEBUZZ) == FLAGSCALEBUZZ?TFT_LIGHTGREY:COLORNOTACTIVE);
DEBUG_MSG("D: BUZZ OFF\n");
}
} else {
if ((deviceBleConnected == true) && (valuechar[REGSCALE] == FLAGSCALEBUZZ)) {
if (val < 30.0) {
buzzOn = true;
M5.Speaker.tone(990);
drawIcon(WBUZZPOSX, TOPROWPOSY, ICONW, ICONH, BUZZ_BMP, COLORICONBUZZ);
DEBUG_MSG("D: BUZZ ON\n");
}
}
}
}
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
void drawIcon(uint16_t x0, uint16_t y0, uint16_t w, uint16_t h, const uint8_t* data, uint16_t color) {
M5.Lcd.setBitmapColor(color, BACKGROUND);
M5.Lcd.pushImage((int32_t)x0, (int32_t)y0, (uint32_t)w, (uint32_t)h, const_cast<uint8_t*>(data), 0, false);
}
//------------------------------------------------------------------------------
void batCheckDraw() {
//based on soc
double soc = 0;
#ifdef BATMETERI2C
DEBUG_MSG("I: BAT check...");
Wire.beginTransmission(MAX17043ADDR); // get SoC
Wire.write(MAX17043SOCADDR);
Wire.endTransmission(false);
Wire.requestFrom(MAX17043ADDR, (uint8_t)2);
soc = Wire.read() + (double) Wire.read() / 256;
DEBUG_MSG(" SoC: %6.2f%%\n", soc);
M5.Lcd.fillRect(WACCUPOSX + 2, TOPROWPOSY + 5, ACCUSCALW, ACCUSCALH, soc>75?COLORICONACCU:COLORNOTACTIVE);
M5.Lcd.fillRect(WACCUPOSX + 5, TOPROWPOSY + 5, ACCUSCALW, ACCUSCALH, soc>50?COLORICONACCU:COLORNOTACTIVE);
M5.Lcd.fillRect(WACCUPOSX + 8, TOPROWPOSY + 5, ACCUSCALW, ACCUSCALH, soc>25?COLORICONACCU:COLORNOTACTIVE);
M5.Lcd.fillRect(WACCUPOSX + 11, TOPROWPOSY + 5, ACCUSCALW, ACCUSCALH, soc>5?COLORICONACCU:COLORNOTACTIVE);
drawIcon(WACCUPOSX, TOPROWPOSY, ICONW, ICONH, ACCU_BMP, soc>0?COLORICONACCU:COLORNOTACTIVE);
#else
if (meterIsPlus) { // if meter is b35tPLUS
if (meterPlusLowBat) // if BAT LOW
soc = 1;
drawIcon(WACCUPOSX, TOPROWPOSY, ICONW, ICONH, ACCU_BMP, soc>0?COLORICONBAT:COLORICONACCU);
} else {
drawIcon(WACCUPOSX, TOPROWPOSY, ICONW, ICONH, ACCU_BMP, soc>0?COLORICONACCU:COLORNOTACTIVE);
}
#endif
/*
//based on voltage
double volt = 0;
DEBUG_MSG("I: BAT check...");
Wire.beginTransmission(MAX17043ADDR); // get voltage
Wire.write(MAX17043VCELLADDR);
Wire.endTransmission(false);
Wire.requestFrom(MAX17043ADDR, (uint8_t)2);
volt = ( (Wire.read() << 4) + (Wire.read() >> 4) ) * 0.00125;
DEBUG_MSG(" Volt: %4.2fV\n", volt);
// >3.3 = 1
// >3.5 = 2
// >3.7 = 3
// >3.9 = 4
M5.Lcd.fillRect(WACCUPOSX + 2, TOPROWPOSY + 5, ACCUSCALW, ACCUSCALH, volt>3.9?TFT_GREEN:COLORNOTACTIVE);
M5.Lcd.fillRect(WACCUPOSX + 5, TOPROWPOSY + 5, ACCUSCALW, ACCUSCALH, volt>3.7?TFT_GREEN:COLORNOTACTIVE);
M5.Lcd.fillRect(WACCUPOSX + 8, TOPROWPOSY + 5, ACCUSCALW, ACCUSCALH, volt>3.5?TFT_GREEN:COLORNOTACTIVE);
M5.Lcd.fillRect(WACCUPOSX + 11, TOPROWPOSY + 5, ACCUSCALW, ACCUSCALH, volt>3.3?TFT_GREEN:COLORNOTACTIVE);
drawIcon(WACCUPOSX, TOPROWPOSY, ICONW, ICONH, ACCU_BMP, volt>0?COLORICONACCU:COLORNOTACTIVE);
*/
}
//------------------------------------------------------------------------------
void drawButtons() {
M5.Lcd.setTextSize(2);
M5.Lcd.setTextColor(BACKGROUND);
M5.Lcd.fillRoundRect(BTNAXPOS, M5.Lcd.height()-BTNYPOSFROMBOTTOM, BTNAW, BTNH, 3, deviceBleWriteAvailable == true?FONTCOLORVALUE:COLORNOTACTIVE);
M5.Lcd.fillRoundRect(BTNBXPOS, M5.Lcd.height()-BTNYPOSFROMBOTTOM, BTNBW, BTNH, 3, deviceBleWriteAvailable == true?FONTCOLORVALUE:COLORNOTACTIVE);
M5.Lcd.fillRoundRect(BTNCXPOS, M5.Lcd.height()-BTNYPOSFROMBOTTOM, BTNCW, BTNH, 3, deviceBleWriteAvailable == true?FONTCOLORVALUE:COLORNOTACTIVE);
M5.Lcd.drawCentreString("<", BTNAXPOS + (BTNAW/2), M5.Lcd.height() - BTNYTEXTPOSFROMBOTTOM, 1);
M5.Lcd.drawCentreString(btnName[btnNumber-1], BTNBXPOS + (BTNBW/2), M5.Lcd.height() - BTNYTEXTPOSFROMBOTTOM, 1);
M5.Lcd.drawCentreString(">", BTNCXPOS + (BTNCW/2), M5.Lcd.height() - BTNYTEXTPOSFROMBOTTOM, 1);
}
//------------------------------------------------------------------------------
void drawBarGraph(bool active = true) {
uint16_t digall=0;
if (active == false) {
M5.Lcd.fillRect(BARGRAPHPOSX, BARGRAPHPOSY, TFT_HEIGHT - 70, 2, COLORNOTACTIVE); // bargraph bottom init scale
} else {
digall = digitsFromBuff();
}
uint16_t mapval = map(digall,0,6000,0,240);
uint16_t CURCOL;
for(uint16_t i = 0; i <= 240; i++) {
if (i <= mapval && active == true)
CURCOL = TFT_WHITE;
else
CURCOL = COLORNOTACTIVE;
if (i%4==0) {
if (i%5==0) {
if (i%40==0)
M5.Lcd.drawFastVLine(BARGRAPHADDX+i, BARGRAPHYA, 20, CURCOL);
else
M5.Lcd.drawFastVLine(BARGRAPHADDX+i, BARGRAPHYB, 15, CURCOL);
} else {
M5.Lcd.drawFastVLine(BARGRAPHADDX+i, BARGRAPHYC, 10, CURCOL);
}
}
}
}
//------------------------------------------------------------------------------
void displayShow(bool active = false) {
drawIcon(WBLEPOSX, TOPROWPOSY, ICONW, ICONH, BLE_BMP, deviceBleConnected == true?COLORICONBLE:COLORNOTACTIVE);
drawIcon(WAUTOPOSX, TOPROWPOSY, ICONW*2, ICONH, AUTO_BMP, active == true?COLORICONAUTO:COLORNOTACTIVE);
drawIcon(WMAXPOSX, TOPROWPOSY, ICONW*2, ICONH, MAX_BMP, active == true?COLORICONMAX:COLORNOTACTIVE);
drawIcon(WMINPOSX, TOPROWPOSY, ICONW*2, ICONH, MIN_BMP, active == true?COLORICONMIN:COLORNOTACTIVE);
drawIcon(WHOLDPOSX, TOPROWPOSY, ICONW, ICONH, HOLD_BMP, active == true?COLORICONHOLD:COLORNOTACTIVE);
drawIcon(WRELPOSX, TOPROWPOSY, ICONW, ICONH, REL_BMP, active == true?COLORICONREL:COLORNOTACTIVE);
drawIcon(WDIODEPOSX, TOPROWPOSY, ICONW, ICONH, DIODE_BMP, active == true?COLORICONDIODE:COLORNOTACTIVE);
drawIcon(WBUZZPOSX, TOPROWPOSY, ICONW, ICONH, BUZZ_BMP, active == true?COLORICONBUZZ:COLORNOTACTIVE);
drawIcon(WHVPOSX, TOPROWPOSY, ICONW, ICONH, HV_BMP, active == true?COLORICONHV:COLORNOTACTIVE);
drawIcon(DCPOSX, DCPOSY, ICONW*2, ICONH, DC_BMP, active == true?COLORICONDC:COLORNOTACTIVE);
drawIcon(ACPOSX, ACPOSY, ICONW*2, ICONH, AC_BMP, active == true?COLORICONAC:COLORNOTACTIVE);
M5.Lcd.fillRect(SIGNPOSX, SIGNPOSY, SIGNW, SIGNH, active == true?FONTCOLORVALUE:COLORNOTACTIVE);
M5.Lcd.fillRect(POINTSPOSX + (0 * DIGITSDISTANCE), POINTSPOSY, POINTSW, POINTSH, active == true?FONTCOLORVALUE:COLORNOTACTIVE);
M5.Lcd.fillRect(POINTSPOSX + (1 * DIGITSDISTANCE), POINTSPOSY, POINTSW, POINTSH, active == true?FONTCOLORVALUE:COLORNOTACTIVE);
M5.Lcd.fillRect(POINTSPOSX + (2 * DIGITSDISTANCE), POINTSPOSY, POINTSW, POINTSH, active == true?FONTCOLORVALUE:COLORNOTACTIVE);
M5.Lcd.setTextDatum(TL_DATUM);
M5.Lcd.setTextSize(2);
M5.Lcd.setTextColor(active == true?FONTCOLORVALUE:COLORNOTACTIVE, BACKGROUND);
M5.Lcd.drawNumber(8, DIGITSPOSX + (0 * DIGITSDISTANCE), DIGITSPOSY, DIGITSFONT);
M5.Lcd.drawNumber(8, DIGITSPOSX + (1 * DIGITSDISTANCE), DIGITSPOSY, DIGITSFONT);
M5.Lcd.drawNumber(8, DIGITSPOSX + (2 * DIGITSDISTANCE), DIGITSPOSY, DIGITSFONT);
M5.Lcd.drawNumber(8, DIGITSPOSX + (3 * DIGITSDISTANCE), DIGITSPOSY, DIGITSFONT);
M5.Lcd.setTextSize(1);
M5.Lcd.fillRect(SCALEPOSX, SCALEUNITPOSY, SCALEW, SCALEUNITH, BACKGROUND);
M5.Lcd.fillRect(UNITPOSX, SCALEUNITPOSY, UNITW, SCALEUNITH, BACKGROUND);
M5.Lcd.drawString("M", SCALEPOSX, SCALEUNITPOSY, SCALEUNITFONT);
M5.Lcd.drawString("Ohm", UNITPOSX, SCALEUNITPOSY, SCALEUNITFONT);
drawBarGraph(active);
drawButtons();
if (active == false)
firstNotify = true;
}
//------------------------------------------------------------------------------
void parseMeterPlus() {
//based on: https://github.com/DeanCording/owonb35 by DeanCording
//protocol: https://github.com/DeanCording/owonb35#protocol
//code: https://github.com/DeanCording/owonb35/blob/master/owonb35.c#L277
//
//parse meterPlus from rawvalbuf to b35t format and fill valuechar buffer
//rawvalbuf e.x. 19 F0 04 00 49 04
uint16_t temp16 = 0;
uint8_t function, scale, decimal;
float measurement;
//prepare valuechar buff
memset(valuechar, 0, meterReplySize); // clean valuechar buffer
valuechar[5]=0x20;
valuechar[12]=0x0d;
valuechar[13]=0x0a;
//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
// 0 and 1 byte from rawvalbuf
temp16 = *((uint16_t *)(rawvalbuf));
DEBUG_MSG("D: B35tPlus PAIR1: %04X\n", temp16);
// parse
function = (temp16 >> 6) & 0x0f;
scale = (temp16 >> 3) & 0x07;
decimal = temp16 & 0x07;
// decode and set appropriate bits in valuechar
DEBUG_MSG(" - FUNCT: %02d\n", function);
DEBUG_MSG(" - SCALE: %02d\n", scale);
DEBUG_MSG(" - DECIM: %02d\n", decimal);
//decinal point
switch (decimal) {
case B000:
valuechar[REGPOINT] = FLAGPOINT0;
break;
case B001:
valuechar[REGPOINT] = FLAGPOINT3;
break;
case B010:
valuechar[REGPOINT] = FLAGPOINT2;
break;
case B011:
valuechar[REGPOINT] = FLAGPOINT1;
break;
default:
break;
}
//function
switch (function) {
case B0000: //DCV
bitSet(valuechar[REGUNIT], 7); //V
bitSet(valuechar[REGMODE], 4); //DC
break;
case B0001: //ACV
bitSet(valuechar[REGUNIT], 7); //V
bitSet(valuechar[REGMODE], 3); //AC
break;
case B0010: //DCA
bitSet(valuechar[REGUNIT], 6); //A
bitSet(valuechar[REGMODE], 4); //DC
break;
case B0011: //ACA
bitSet(valuechar[REGUNIT], 6); //A
bitSet(valuechar[REGMODE], 3); //AC
break;
case B0100: //Ohm
bitSet(valuechar[REGUNIT], 5); //Ohm
break;
case B0101: //Cap
bitSet(valuechar[REGUNIT], 2); //Cap
break;
case B0110: //Hz
bitSet(valuechar[REGUNIT], 3); //Hz
break;
case B0111: //Duty
bitSet(valuechar[REGSCALE], 1); //Duty
break;
case B1000: //TempC
bitSet(valuechar[REGUNIT], 1); //TempC
break;
case B1001: //TempF
bitSet(valuechar[REGUNIT], 0); //TempF
break;
case B1010: //Diode
bitSet(valuechar[REGSCALE], 2); //Diode
break;
case B1011: //Continuity
bitSet(valuechar[REGSCALE], 3); //Continuity
break;
case B1100: //hFE
bitSet(valuechar[REGUNIT], 4); //hFE
break;
default:
break;
}
//scale
switch (scale) {
case B010: //micro
bitSet(valuechar[REGSCALE], 7); //micro
break;
case B011: //milli
bitSet(valuechar[REGSCALE], 6); //milli
break;
case B101: //kilo
bitSet(valuechar[REGSCALE], 5); //kilo
break;
case B110: //mega
bitSet(valuechar[REGSCALE], 4); //mega
break;
default:
break;
}
//------------------------------------------------------------------
//------------------------------------------------------------------
// 2 and 3 byte from rawvalbuf
temp16 = *((uint16_t *)(rawvalbuf+2));
DEBUG_MSG("D: B35tPlus PAIR2: %04X\n", temp16);
// decode and set appropriate bits in valuechar
bitWrite(valuechar[REGMODE], 1, bitRead(temp16, 0)); // HOLD
bitWrite(valuechar[REGMODE], 2, bitRead(temp16, 1)); // DELTA
bitWrite(valuechar[REGMODE], 5, bitRead(temp16, 2)); // AUTORANGE
bitWrite(valuechar[REGMINMAX], 4, bitRead(temp16, 4)); // MIN
bitWrite(valuechar[REGMINMAX], 5, bitRead(temp16, 5)); // MAX
if (bitRead(temp16, 3) == 1) // LOW BAT
meterPlusLowBat = true;
else
meterPlusLowBat = false;
if (meterPlusLowBat != meterPlusLowBatLast) {
meterPlusLowBatLast = meterPlusLowBat;
batCheckDraw();
}
//------------------------------------------------------------------
//------------------------------------------------------------------
// 4 and 5 byte from rawvalbuf
temp16 = *((uint16_t *)(rawvalbuf+4));
DEBUG_MSG("D: B35tPlus PAIR3: %04X\n", temp16);
// parse
if (decimal < 0x07) { // if not overloaded
if (temp16 < 0x7fff) {
measurement = (float)temp16 / pow(10.0, decimal);
valuechar[REGPLUSMINUS]=FLAGPLUS; // set flag plus
} else {
measurement = -1 * (float)(temp16 & 0x7fff) / pow(10.0, decimal);
valuechar[REGPLUSMINUS]=FLAGMINUS; // set flag minus
temp16 = temp16 & 0x7fff;
}
DEBUG_MSG(" - VALUE : %06.4f\n", measurement);
valuechar[REGDIG1] = 0x30 + (int(temp16 / 1000) % 10);
valuechar[REGDIG2] = 0x30 + (int(temp16 / 100) % 10);
valuechar[REGDIG3] = 0x30 + (int(temp16 / 10) % 10);
valuechar[REGDIG4] = 0x30 + (int(temp16 / 1) % 10);
} else {
memcpy(valuechar, overLoadFrame, 5);
}
}
//------------------------------------------------------------------------------
void displayValues() {
static char valuetmp[meterReplySize-3]; // local copy of data
if (meterIsPlus) { // if meter is b35tPLUS
parseMeterPlus();
} else { // if meter is b35t
memcpy(valuechar, rawvalbuf, meterReplySize); // simply copy rawvalbuf to valuechar
}
#ifdef MYDEBUG
DEBUG_MSG(" - OUT BUFF: [ ");
for (uint8_t i = 0; i < meterReplySize; i++) {
DEBUG_MSG("%02X ", valuechar[i]);
}
DEBUG_MSG("]\n");
#endif
if (memcmp(valuechar, overLoadFrame, 5) == 0) { // if overloaded
if (overLoad == false) {
overLoad = true;
DEBUG_MSG(" - OVERLOAD: YES\n");
}
} else {
if (overLoad == true) {
overLoad = false;
DEBUG_MSG(" - OVERLOAD: NO\n");
}
}
if (((valuechar[REGSCALE] & FLAGSCALEBUZZ) == FLAGSCALEBUZZ) || (buzzOn == true)) {
buzzCheck();
}
if (firstNotify == true) {
displayShow();
M5.Lcd.setTextColor(FONTCOLORVALUE, BACKGROUND);
M5.Lcd.setTextDatum(TL_DATUM);
M5.Lcd.fillRect(BARGRAPHPOSX, BARGRAPHPOSY, TFT_HEIGHT - 70, 2, TFT_WHITE); // bargraph bottom init scale
memset(valuetmp, 0, meterReplySize-3);
//drawIcon(WBLEPOSX, TOPROWPOSY, ICONW, ICONH, BLE_BMP, deviceBleConnected == true?COLORICONBLE:COLORNOTACTIVE);
firstNotify = false;
} else {
drawBarGraph(!overLoad);
}
if (valuetmp[REGUNIT] != valuechar[REGUNIT]) { // unit
String unit = "";
valuetmp[REGUNIT] = valuechar[REGUNIT];
switch (valuetmp[REGUNIT]) {
case FLAGUNITFAHR:
unit = "*F";
break;
case FLAGUNITGRAD:
unit = "*C";
break;
case FLAGUNITNF:
unit = "nF";
break;
case FLAGUNITHZ:
unit = "Hz";
break;
case FLAGUNITHFE:
unit = "hFE";
break;
case FLAGUNITOHM:
unit = "Ohm";
break;
case FLAGUNITAMP:
unit = "A";
break;
case FLAGUNITVOLT:
unit = "V";
break;
break;
}
M5.Lcd.fillRect(UNITPOSX, SCALEUNITPOSY, UNITW, SCALEUNITH, BACKGROUND);
M5.Lcd.setTextSize(1);
M5.Lcd.setTextColor(TFT_YELLOW, BACKGROUND);
M5.Lcd.drawString(unit, UNITPOSX, SCALEUNITPOSY, SCALEUNITFONT);
}
if (valuetmp[REGSCALE] != valuechar[REGSCALE]) { //scale
String scale = "";
if ((valuechar[REGSCALE] & FLAGSCALEDUTY) == FLAGSCALEDUTY) {
valuetmp[REGSCALE] |= FLAGSCALEDUTY;
scale = "%";
} else {
valuetmp[REGSCALE] &= ~(FLAGSCALEDUTY);
}
if ((valuechar[REGSCALE] & FLAGSCALEDIODE) == FLAGSCALEDIODE)
valuetmp[REGSCALE] |= FLAGSCALEDIODE;
else
valuetmp[REGSCALE] &= ~(FLAGSCALEDIODE);
drawIcon(WDIODEPOSX, TOPROWPOSY, ICONW, ICONH, DIODE_BMP, (valuetmp[REGSCALE] & FLAGSCALEDIODE) == FLAGSCALEDIODE?COLORICONDIODE:COLORNOTACTIVE);
if ((valuechar[REGSCALE] & FLAGSCALEBUZZ) == FLAGSCALEBUZZ) {
valuetmp[REGSCALE] |= FLAGSCALEBUZZ;
} else {
valuetmp[REGSCALE] &= ~(FLAGSCALEBUZZ);
}
//drawIcon(WBUZZPOSX, TOPROWPOSY, ICONW, ICONH, BUZZ_BMP, (valuetmp[REGSCALE] & FLAGSCALEBUZZ) == FLAGSCALEBUZZ?COLORICONBUZZ:COLORNOTACTIVE);
drawIcon(WBUZZPOSX, TOPROWPOSY, ICONW, ICONH, BUZZ_BMP, (valuetmp[REGSCALE] & FLAGSCALEBUZZ) == FLAGSCALEBUZZ?(buzzOn == true?COLORICONBUZZ:TFT_LIGHTGREY):COLORNOTACTIVE);
if ((valuechar[REGSCALE] & FLAGSCALEMEGA) == FLAGSCALEMEGA) {
valuetmp[REGSCALE] |= FLAGSCALEMEGA;
scale = "M";
} else {
valuetmp[REGSCALE] &= ~(FLAGSCALEMEGA);
}
if ((valuechar[REGSCALE] & FLAGSCALEKILO) == FLAGSCALEKILO) {
valuetmp[REGSCALE] |= FLAGSCALEKILO;
scale = "k";
} else {
valuetmp[REGSCALE] &= ~(FLAGSCALEKILO);
}
if ((valuechar[REGSCALE] & FLAGSCALEMILI) == FLAGSCALEMILI) {
valuetmp[REGSCALE] |= FLAGSCALEMILI;
scale = "m";
} else {
valuetmp[REGSCALE] &= ~(FLAGSCALEMILI);
}
if ((valuechar[REGSCALE] & FLAGSCALEMICRO) == FLAGSCALEMICRO) {
valuetmp[REGSCALE] |= FLAGSCALEMICRO;
scale = "u";
} else {
valuetmp[REGSCALE] &= ~(FLAGSCALEMICRO);
}
M5.Lcd.fillRect(SCALEPOSX, SCALEUNITPOSY, SCALEW, SCALEUNITH, BACKGROUND);
if (scale != "") {
M5.Lcd.setTextSize(1);
M5.Lcd.setTextColor(TFT_YELLOW, BACKGROUND);
M5.Lcd.drawString(scale, SCALEPOSX, SCALEUNITPOSY, SCALEUNITFONT);
}
}
if ((valuetmp[REGMODE] & FLAGMODEAUTO) != (valuechar[REGMODE] & FLAGMODEAUTO)) { // auto
if ((valuechar[REGMODE] & FLAGMODEAUTO) == FLAGMODEAUTO)
valuetmp[REGMODE] |= FLAGMODEAUTO;
else
valuetmp[REGMODE] &= ~(FLAGMODEAUTO);
drawIcon(WAUTOPOSX, TOPROWPOSY, ICONW*2, ICONH, AUTO_BMP, (valuetmp[REGMODE] & FLAGMODEAUTO) == FLAGMODEAUTO?COLORICONAUTO:COLORNOTACTIVE);
}
if ((valuetmp[REGMINMAX] & FLAGMAX) != (valuechar[REGMINMAX] & FLAGMAX)) { // max
if ((valuechar[REGMINMAX] & FLAGMAX) == FLAGMAX)
valuetmp[REGMINMAX] |= FLAGMAX;
else
valuetmp[REGMINMAX] &= ~(FLAGMAX);
drawIcon(WMAXPOSX, TOPROWPOSY, ICONW*2, ICONH, MAX_BMP, (valuetmp[REGMINMAX] & FLAGMAX) == FLAGMAX?COLORICONMAX:COLORNOTACTIVE);
}
if ((valuetmp[REGMINMAX] & FLAGMIN) != (valuechar[REGMINMAX] & FLAGMIN)) { // min
if ((valuechar[REGMINMAX] & FLAGMIN) == FLAGMIN)
valuetmp[REGMINMAX] |= FLAGMIN;
else
valuetmp[REGMINMAX] &= ~(FLAGMIN);
drawIcon(WMINPOSX, TOPROWPOSY, ICONW*2, ICONH, MIN_BMP, (valuetmp[REGMINMAX] & FLAGMIN) == FLAGMIN?COLORICONMIN:COLORNOTACTIVE);
}
if ((valuetmp[REGMODE] & FLAGMODEHOLD) != (valuechar[REGMODE] & FLAGMODEHOLD)) { // hold
if ((valuechar[REGMODE] & FLAGMODEHOLD) == FLAGMODEHOLD)
valuetmp[REGMODE] |= FLAGMODEHOLD;
else
valuetmp[REGMODE] &= ~(FLAGMODEHOLD);
drawIcon(WHOLDPOSX, TOPROWPOSY, ICONW, ICONH, HOLD_BMP, (valuetmp[REGMODE] & FLAGMODEHOLD) == FLAGMODEHOLD?COLORICONHOLD:COLORNOTACTIVE);
}
if ((valuetmp[REGMODE] & FLAGMODEREL) != (valuechar[REGMODE] & FLAGMODEREL)) { // relative
if ((valuechar[REGMODE] & FLAGMODEREL) == FLAGMODEREL)
valuetmp[REGMODE] |= FLAGMODEREL;
else
valuetmp[REGMODE] &= ~(FLAGMODEREL);
drawIcon(WRELPOSX, TOPROWPOSY, ICONW, ICONH, REL_BMP, (valuetmp[REGMODE] & FLAGMODEREL) == FLAGMODEREL?COLORICONREL:COLORNOTACTIVE);
}
if ((valuetmp[REGMODE] & FLAGMODEDC) != (valuechar[REGMODE] & FLAGMODEDC)) { // dc
if ((valuechar[REGMODE] & FLAGMODEDC) == FLAGMODEDC)
valuetmp[REGMODE] |= FLAGMODEDC;
else
valuetmp[REGMODE] &= ~(FLAGMODEDC);
drawIcon(DCPOSX, DCPOSY, ICONW*2, ICONH, DC_BMP, (valuetmp[REGMODE] & FLAGMODEDC) == FLAGMODEDC?COLORICONDC:COLORNOTACTIVE);
}
if ((valuetmp[REGMODE] & FLAGMODEAC) != (valuechar[REGMODE] & FLAGMODEAC)) { // ac
if ((valuechar[REGMODE] & FLAGMODEAC) == FLAGMODEAC)
valuetmp[REGMODE] |= FLAGMODEAC;
else
valuetmp[REGMODE] &= ~(FLAGMODEAC);
drawIcon(ACPOSX, ACPOSY, ICONW*2, ICONH, AC_BMP, (valuetmp[REGMODE] & FLAGMODEAC) == FLAGMODEAC?COLORICONAC:COLORNOTACTIVE);
}
M5.Lcd.setTextSize(2);
M5.Lcd.setTextColor(FONTCOLORVALUE, BACKGROUND);
if (valuetmp[REGPLUSMINUS] != valuechar[REGPLUSMINUS]) { // sign "-"
valuetmp[REGPLUSMINUS] = valuechar[REGPLUSMINUS];
M5.Lcd.fillRect(SIGNPOSX, SIGNPOSY, SIGNW, SIGNH, (valuetmp[REGPLUSMINUS] & FLAGMINUS) == FLAGMINUS?FONTCOLORVALUE:BACKGROUND);
}
if (valuetmp[REGDIG1] != valuechar[REGDIG1]) { // digits
valuetmp[REGDIG1] = valuechar[REGDIG1];
if (valuetmp[REGDIG1] >= 0x30 && valuetmp[REGDIG1] <= 0x39)
M5.Lcd.drawChar(valuetmp[REGDIG1], DIGITSPOSX + (0 * DIGITSDISTANCE), DIGITSPOSY, DIGITSFONT);
else
M5.Lcd.fillRect(DIGITSPOSX + (0 * DIGITSDISTANCE), DIGITSPOSY, 63, 94, BACKGROUND);
}
if (valuetmp[REGDIG2] != valuechar[REGDIG2]) {
valuetmp[REGDIG2] = valuechar[REGDIG2];
if (valuetmp[REGDIG2] >= 0x30 && valuetmp[REGDIG2] <= 0x39)
M5.Lcd.drawChar(valuetmp[REGDIG2], DIGITSPOSX + (1 * DIGITSDISTANCE), DIGITSPOSY, DIGITSFONT);
else
M5.Lcd.fillRect(DIGITSPOSX + (1 * DIGITSDISTANCE), DIGITSPOSY, 63, 94, BACKGROUND);
}
if (valuetmp[REGDIG3] != valuechar[REGDIG3]) {
valuetmp[REGDIG3] = valuechar[REGDIG3];
if (valuetmp[REGDIG3] >= 0x30 && valuetmp[REGDIG3] <= 0x39)
M5.Lcd.drawChar(valuetmp[REGDIG3], DIGITSPOSX + (2 * DIGITSDISTANCE), DIGITSPOSY, DIGITSFONT);
else if (valuetmp[REGDIG3] == 0x3a)
M5.Lcd.drawNumber(1, DIGITSPOSX + (2 * DIGITSDISTANCE), DIGITSPOSY, DIGITSFONT);
else
M5.Lcd.fillRect(DIGITSPOSX + (2 * DIGITSDISTANCE), DIGITSPOSY, 63, 94, BACKGROUND);
}
if (valuetmp[REGDIG4] != valuechar[REGDIG4]) {
valuetmp[REGDIG4] = valuechar[REGDIG4];
if (valuetmp[REGDIG4] >= 0x30 && valuetmp[REGDIG4] <= 0x39)
M5.Lcd.drawChar(valuetmp[REGDIG4], DIGITSPOSX + (3 * DIGITSDISTANCE), DIGITSPOSY, DIGITSFONT);
else
M5.Lcd.fillRect(DIGITSPOSX + (3 * DIGITSDISTANCE), DIGITSPOSY, 63, 94, BACKGROUND);
}
DEBUG_MSG(" - DIGITS: %c %c %c %c\n", valuetmp[REGDIG1], valuetmp[REGDIG2], valuetmp[REGDIG3], valuetmp[REGDIG4]);
if (valuetmp[REGPOINT] != valuechar[REGPOINT]) { // decimal point
valuetmp[REGPOINT] = valuechar[REGPOINT];
M5.Lcd.fillRect(POINTSPOSX + (0 * DIGITSDISTANCE), POINTSPOSY, POINTSW, POINTSH, (valuetmp[REGPOINT] & FLAGPOINT1) == FLAGPOINT1?FONTCOLORVALUE:BACKGROUND);
M5.Lcd.fillRect(POINTSPOSX + (1 * DIGITSDISTANCE), POINTSPOSY, POINTSW, POINTSH, (valuetmp[REGPOINT] & FLAGPOINT2) == FLAGPOINT2?FONTCOLORVALUE:BACKGROUND);
M5.Lcd.fillRect(POINTSPOSX + (2 * DIGITSDISTANCE), POINTSPOSY, POINTSW, POINTSH, (valuetmp[REGPOINT] & FLAGPOINT3) == FLAGPOINT3?FONTCOLORVALUE:BACKGROUND);
}
newBleData = false;
}
static void notifyCallback(BLERemoteCharacteristic* pBLERemoteCharacteristic, uint8_t* pData, size_t length, bool isNotify) {
if (isNotify == true && length <= rawBufferSize && pBLERemoteCharacteristic->getUUID().equals(charnotificationUUID)) {
if (memcmp(rawvalbuf, pData, length) != 0) { // if new data <> old data
DEBUG_MSG("D: Notify callback len=%d (UUID OK), new frame\n", length);
if (newBleData == false) { // and if old data are displayed then copy new data
memcpy(rawvalbuf, pData, length);
#ifdef MYDEBUG
DEBUG_MSG(" - RAW BUFF: [ ");
for (uint8_t i = 0; i < length; i++) {
DEBUG_MSG("%02X ", rawvalbuf[i]);
}
DEBUG_MSG("]\n");
#endif
if ((length == replySizePlus) && (rawvalbuf[1] >= 0xf0)) { // if meter PLUS detected
if (meterIsPlus == false) {
meterIsPlus = true;
DEBUG_MSG(" - type B35TPlus\n");
}
newBleData = true;
} else if ((length == replySizeNorm) && (rawvalbuf[12] == 0x0d) && (rawvalbuf[13] == 0x0a)) {
if (meterIsPlus == true) {
meterIsPlus = false;
DEBUG_MSG(" - type B35T\n");
}
newBleData = true;
} else {
DEBUG_MSG(" - type UNKNOWN\n");
}
} else {
DEBUG_MSG(" - skipped, previous frame still processed\n");
}
} else {
DEBUG_MSG("D: Notify callback len=%d (UUID OK), frame same as previous one\n", length);
}
lastBleNotify = millis();
}
}
class MyClientCallbacks: public BLEClientCallbacks {
void onConnect(BLEClient *pClient) {
deviceBleConnected = true; // set ble connected flag
DEBUG_MSG("I: %s connected\n", OWONNAME);
};
void onDisconnect(BLEClient *pClient) {
pClient->disconnect();
deviceBleConnected = false; // clear ble connected flag
deviceBleWriteAvailable = false; // clear ble available for write flag
DEBUG_MSG("I: %s disconnected\n", OWONNAME);
}
};
bool connectToServer(BLEAddress pAddress) {
DEBUG_MSG("I: Create a connection to addr: %s\n", pAddress.toString().c_str());
BLEClient* pClient = BLEDevice::createClient();
DEBUG_MSG(" - Client created\n");
pClient->setClientCallbacks(new MyClientCallbacks());
DEBUG_MSG(" - Connecting to server...\n");
pClient->connect(pAddress); // connect to the remove BLE Server.
BLERemoteService* pRemoteService = pClient->getService(serviceUUID); // check if remote BLE service exists
if (pRemoteService == nullptr) {
DEBUG_MSG(" - Service not found (UUID: %s)\n", serviceUUID.toString().c_str());
return false;
} else {
DEBUG_MSG(" - Service found (UUID: %s)\n", serviceUUID.toString().c_str());
}
// notify characteristic
pRemoteCharacteristicNotify = pRemoteService->getCharacteristic(charnotificationUUID);
if (pRemoteCharacteristicNotify == nullptr) {
DEBUG_MSG(" - Notify characteristic not found (UUID: %s)\n", charnotificationUUID.toString().c_str());
return false;
} else {
DEBUG_MSG(" - Notify characteristic found (UUID: %s)\n", charnotificationUUID.toString().c_str());
}
pRemoteCharacteristicNotify->registerForNotify(notifyCallback); //register notify callback
// write characteristic
pRemoteCharacteristicWrite = pRemoteService->getCharacteristic(charwriteUUID);
if (pRemoteCharacteristicWrite == nullptr) {
DEBUG_MSG(" - Write characteristic not found (UUID: %s)\n", charwriteUUID.toString().c_str());
deviceBleWriteAvailable = false; // clear ble available for write flag
} else {
DEBUG_MSG(" - Write characteristic found (UUID: %s)\n", charwriteUUID.toString().c_str());
deviceBleWriteAvailable = true; // set ble available for write flag
}
return true;
}
class MyAdvertisedDeviceCallbacks: public BLEAdvertisedDeviceCallbacks {
void onResult(BLEAdvertisedDevice advertisedDevice) {
DEBUG_MSG("I: BLE scan stop\n");
if (advertisedDevice.haveName() && strcmp(advertisedDevice.getName().c_str(), OWONNAME) == 0) {
advertisedDevice.getScan()->stop();
//DEBUG_MSG("I: Stop BLE scan\n");
pServerAddress = new BLEAddress(advertisedDevice.getAddress());
DEBUG_MSG("I: BLE device found (%s at addr: %s)\n", OWONNAME, pServerAddress->toString().c_str());
} else {
DEBUG_MSG("I: BLE device not found\n");
}
drawIcon(WBLEPOSX, TOPROWPOSY, ICONW, ICONH, BLE_BMP, deviceBleConnected == true?COLORICONBLE:COLORNOTACTIVE);
}
};
void doScan() {
drawIcon(WBLEPOSX, TOPROWPOSY, ICONW, ICONH, BLE_BMP, COLORICONBLESEARCH);
DEBUG_MSG("I: BLE scan start\n");
startBleScanning = millis();
BLEScan* pBLEScan = BLEDevice::getScan();