Merge pull request #750 from cyberman54/master

Sync dev to master
2021-03-03 10:22:55 +01:00 · 2021-03-03 10:22:55 +01:00 · cb07ad4414
commit cb07ad4414
parent 4abce6b48e 8dcac35ae1
16 changed files with 607 additions and 30 deletions
--- a/README.md
+++ b/README.md
@ -13,6 +13,8 @@ Tutorial (in german language): https://www.heise.de/select/make/2019/1/155109923
 <img src="img/TTGO-curves.jpg">
 <img src="img/Paxcounter-LEDmatrix.jpg">
 <img src="img/Paxcounter-Clock.png">
+<img src="img/Paxcounter-ttgo-twristband.jpg">
+

 # Use case

@ -47,6 +49,7 @@ LoLin32lite + [LoraNode32-Lite shield](https://github.com/hallard/LoLin32-Lite-L
 - WeMos: LoLin32, LoLin32 Lite, WeMos D32, [Wemos32 Oled](https://www.instructables.com/id/ESP32-With-Integrated-OLED-WEMOSLolin-Getting-Star/)
 - Crowdsupply: [TinyPICO](https://www.crowdsupply.com/unexpected-maker/tinypico)
 - TTGO: [T-Display](https://www.aliexpress.com/item/33048962331.html)
+- TTGO: [T-Wristband](https://www.aliexpress.com/item/4000527495064.html)
 - Generic ESP32

 Depending on board hardware following features are supported:
@ -604,6 +607,7 @@ Thanks to
 - [Oliver Brandmüller](https://github.com/spmrider) for idea and initial setup of this project
 - [Charles Hallard](https://github.com/hallard) for major code contributions to this project
 - [robbi5](https://github.com/robbi5) for the payload converter
+- [Caspar Armster](https://www.dasdigidings.de/) for the The Things Stack V3 payload converter
 - [terrillmoore](https://github.com/mcci-catena) for maintaining the LMIC for arduino LoRaWAN stack
 - [sbamueller](https://github.com/sbamueller) for writing the tutorial in Make Magazine
 - [Stefan](https://github.com/nerdyscout) for paxcounter opensensebox integration
--- a/img/Paxcounter-ttgo-twristband.jpg
+++ b/img/Paxcounter-ttgo-twristband.jpg
--- a/include/power.h
+++ b/include/power.h
@ -2,8 +2,8 @@
 #define _POWER_H

 #include <Arduino.h>
-#include <driver/adc.h>
 #include <esp_adc_cal.h>
+//#include <esp32-hal-adc.h>

 #include "i2c.h"
 #include "reset.h"
@ -34,6 +34,20 @@
 #endif
 #endif

+#ifdef EXT_POWER_SW
+#ifndef EXT_POWER_ON
+#define EXT_POWER_ON 1
+#endif
+#ifndef EXT_POWER_OFF
+#define EXT_POWER_OFF (!EXT_POWER_ON)
+#endif
+#endif
+
+#ifdef BAT_MEASURE_ADC_UNIT // ADC2 wifi bug workaround
+extern RTC_NOINIT_ATTR uint64_t RTC_reg_b;
+#include "soc/sens_reg.h" // needed for adc pin reset
+#endif
+
 typedef uint8_t (*mapFn_t)(uint16_t, uint16_t, uint16_t);

 uint16_t read_voltage(void);
--- a/platformio_orig.ini
+++ b/platformio_orig.ini
@ -13,6 +13,7 @@
 ;halfile = ecopower.h
 ;halfile = heltec.h
 ;halfile = heltecv2.h
+;halfile = heltecv21.h
 ;halfile = ttgov1.h
 ;halfile = ttgov2.h
 ;halfile = ttgov21old.h
@ -21,6 +22,7 @@
 ;halfile = ttgobeam.h
 halfile = ttgobeam10.h
 ;halfile = ttgotdisplay.h
+;halfile = ttgotwristband.h
 ;halfile = fipy.h
 ;halfile = lopy.h
 ;halfile = lopy4.h
--- a/src/TTNv3/packed_decodeUplink.js
+++ b/src/TTNv3/packed_decodeUplink.js
@ -0,0 +1,330 @@
+// Decoder for device payload encoder "PACKED"
+// copy&paste to TTN Console V3 -> Applications -> Payload formatters -> Uplink -> Javascript
+// modified for The Things Stack V3 by Caspar Armster, dasdigidings e.V.
+
+function decodeUplink(input) {
+    var data = {};
+
+    if (input.fPort === 1) {
+        // only wifi counter data, no gps
+        if (input.bytes.length === 2) {
+            data = decode(input.bytes, [uint16], ['wifi']);
+        }
+        // wifi + ble counter data, no gps
+        if (input.bytes.length === 4) {
+            data = decode(input.bytes, [uint16, uint16], ['wifi', 'ble']);
+        }
+        // combined wifi + ble + SDS011
+        if (input.bytes.length === 8) {
+            data = decode(input.bytes, [uint16, uint16, uint16, uint16], ['wifi', 'ble', 'PM10', 'PM25']);
+        }
+        // combined wifi counter and gps data, used by https://opensensemap.org
+        if (input.bytes.length === 10) {
+            data = decode(input.bytes, [latLng, latLng, uint16], ['latitude', 'longitude', 'wifi']);
+        }
+        // combined wifi + ble counter and gps data, used by https://opensensemap.org
+        if (input.bytes.length === 12) {
+            data = decode(input.bytes, [latLng, latLng, uint16, uint16], ['latitude', 'longitude', 'wifi', 'ble']);
+        }
+        // combined wifi counter and gps data
+        if (input.bytes.length === 15) {
+            data = decode(input.bytes, [uint16, latLng, latLng, uint8, hdop, altitude], ['wifi', 'latitude', 'longitude', 'sats', 'hdop', 'altitude']);
+        }
+        // combined wifi + ble counter and gps data
+        if (input.bytes.length === 17) {
+            data = decode(input.bytes, [uint16, uint16, latLng, latLng, uint8, hdop, altitude], ['wifi', 'ble', 'latitude', 'longitude', 'sats', 'hdop', 'altitude']);
+        }
+        
+        data.pax = 0;
+        if ('wifi' in data) {
+            data.pax += data.wifi;
+        }
+        if ('ble' in data) {
+            data.pax += data.ble;
+        } 
+    }
+
+    if (input.fPort === 2) {
+        // device status data
+        if (input.bytes.length === 17) {
+            data = decode(input.bytes, [uint16, uptime, uint8, uint32, uint8, uint8], ['voltage', 'uptime', 'cputemp', 'memory', 'reset0', 'reset1']);
+        }
+    }
+
+    if (input.fPort === 3) {
+        // device config data      
+        data = decode(input.bytes, [uint8, uint8, int16, uint8, uint8, uint8, uint8, bitmap1, bitmap2, version], ['loradr', 'txpower', 'rssilimit', 'sendcycle', 'wifichancycle', 'blescantime', 'rgblum', 'flags', 'payloadmask', 'version']);
+    }
+
+    if (input.fPort === 4) {
+        // gps data      
+        if (input.bytes.length === 8) {
+            data = decode(input.bytes, [latLng, latLng], ['latitude', 'longitude']);
+        } else {
+            data = decode(input.bytes, [latLng, latLng, uint8, hdop, altitude], ['latitude', 'longitude', 'sats', 'hdop', 'altitude']);
+        }
+    }
+
+    if (input.fPort === 5) {
+        // button pressed      
+        data = decode(input.bytes, [uint8], ['button']);
+    }
+
+    if (input.fPort === 6) {
+        // beacon proximity alarm      
+        data = decode(input.bytes, [int8, uint8], ['rssi', 'beacon']);
+    }
+
+    if (input.fPort === 7) {
+        // BME680 sensor data     
+        data = decode(input.bytes, [float, pressure, ufloat, ufloat], ['temperature', 'pressure', 'humidity', 'air']);
+    }
+
+    if (input.fPort === 8) {
+        // battery voltage      
+        data = decode(input.bytes, [uint16], ['voltage']);
+    }
+
+    if (input.fPort === 9) {
+        // timesync request
+        if (input.bytes.length === 1) {
+            data.timesync_seqno = input.bytes[0];
+        }
+        // epoch time answer
+        if (input.bytes.length === 5) {
+            data = decode(input.bytes, [uint32, uint8], ['time', 'timestatus']);
+        }
+    }
+
+    if (input.fPort === 10) {
+        // ENS count      
+        data = decode(input.bytes, [uint16], ['ens']);
+    }
+    
+    data.bytes = input.bytes; // comment out if you do not want to include the original payload
+    data.port = input.fPort; // comment out if you do not want to inlude the port
+
+    return {
+        data: data,
+        warnings: [],
+        errors: []
+    };
+}
+
+
+// ----- contents of /src/decoder.js --------------------------------------------
+// https://github.com/thesolarnomad/lora-serialization/blob/master/src/decoder.js
+
+var bytesToInt = function (bytes) {
+    var i = 0;
+    for (var x = 0; x < bytes.length; x++) {
+        i |= (bytes[x] << (x * 8));
+    }
+    return i;
+};
+
+var version = function (bytes) {
+    if (bytes.length !== version.BYTES) {
+        throw new Error('version must have exactly 10 bytes');
+    }
+    return String.fromCharCode.apply(null, bytes).split('\u0000')[0];
+};
+version.BYTES = 10;
+
+var uint8 = function (bytes) {
+    if (bytes.length !== uint8.BYTES) {
+        throw new Error('uint8 must have exactly 1 byte');
+    }
+    return bytesToInt(bytes);
+};
+uint8.BYTES = 1;
+
+var uint16 = function (bytes) {
+    if (bytes.length !== uint16.BYTES) {
+        throw new Error('uint16 must have exactly 2 bytes');
+    }
+    return bytesToInt(bytes);
+};
+uint16.BYTES = 2;
+
+var uint32 = function (bytes) {
+    if (bytes.length !== uint32.BYTES) {
+        throw new Error('uint32 must have exactly 4 bytes');
+    }
+    return bytesToInt(bytes);
+};
+uint32.BYTES = 4;
+
+var uint64 = function (bytes) {
+    if (bytes.length !== uint64.BYTES) {
+        throw new Error('uint64 must have exactly 8 bytes');
+    }
+    return bytesToInt(bytes);
+};
+uint64.BYTES = 8;
+
+var int8 = function (bytes) {
+    if (bytes.length !== int8.BYTES) {
+        throw new Error('int8 must have exactly 1 byte');
+    }
+    var value = +(bytesToInt(bytes));
+    if (value > 127) {
+        value -= 256;
+    }
+    return value;
+};
+int8.BYTES = 1;
+
+var int16 = function (bytes) {
+    if (bytes.length !== int16.BYTES) {
+        throw new Error('int16 must have exactly 2 bytes');
+    }
+    var value = +(bytesToInt(bytes));
+    if (value > 32767) {
+        value -= 65536;
+    }
+    return value;
+};
+int16.BYTES = 2;
+
+var int32 = function (bytes) {
+    if (bytes.length !== int32.BYTES) {
+        throw new Error('int32 must have exactly 4 bytes');
+    }
+    var value = +(bytesToInt(bytes));
+    if (value > 2147483647) {
+        value -= 4294967296;
+    }
+    return value;
+};
+int32.BYTES = 4;
+
+var latLng = function (bytes) {
+    return +(int32(bytes) / 1e6).toFixed(6);
+};
+latLng.BYTES = int32.BYTES;
+
+var uptime = function (bytes) {
+    return uint64(bytes);
+};
+uptime.BYTES = uint64.BYTES;
+
+var hdop = function (bytes) {
+    return +(uint16(bytes) / 100).toFixed(2);
+};
+hdop.BYTES = uint16.BYTES;
+
+var altitude = function (bytes) {
+    // Option to increase altitude resolution (also on encoder side)
+    // return +(int16(bytes) / 4 - 1000).toFixed(1);
+    return +(int16(bytes));
+};
+altitude.BYTES = int16.BYTES;
+
+
+var float = function (bytes) {
+    if (bytes.length !== float.BYTES) {
+        throw new Error('Float must have exactly 2 bytes');
+    }
+    var isNegative = bytes[0] & 0x80;
+    var b = ('00000000' + Number(bytes[0]).toString(2)).slice(-8)
+        + ('00000000' + Number(bytes[1]).toString(2)).slice(-8);
+    if (isNegative) {
+        var arr = b.split('').map(function (x) { return !Number(x); });
+        for (var i = arr.length - 1; i > 0; i--) {
+            arr[i] = !arr[i];
+            if (arr[i]) {
+                break;
+            }
+        }
+        b = arr.map(Number).join('');
+    }
+    var t = parseInt(b, 2);
+    if (isNegative) {
+        t = -t;
+    }
+    return +(t / 100).toFixed(2);
+};
+float.BYTES = 2;
+
+var ufloat = function (bytes) {
+    return +(uint16(bytes) / 100).toFixed(2);
+};
+ufloat.BYTES = uint16.BYTES;
+
+var pressure = function (bytes) {
+    return +(uint16(bytes) / 10).toFixed(1);
+};
+pressure.BYTES = uint16.BYTES;
+
+var bitmap1 = function (byte) {
+    if (byte.length !== bitmap1.BYTES) {
+        throw new Error('Bitmap must have exactly 1 byte');
+    }
+    var i = bytesToInt(byte);
+    var bm = ('00000000' + Number(i).toString(2)).substr(-8).split('').map(Number).map(Boolean);
+    return ['adr', 'screensaver', 'screen', 'countermode', 'blescan', 'antenna', 'filter', 'alarm']
+        .reduce(function (obj, pos, index) {
+            obj[pos] = +bm[index];
+            return obj;
+        }, {});
+};
+bitmap1.BYTES = 1;
+
+var bitmap2 = function (byte) {
+    if (byte.length !== bitmap2.BYTES) {
+        throw new Error('Bitmap must have exactly 1 byte');
+    }
+    var i = bytesToInt(byte);
+    var bm = ('00000000' + Number(i).toString(2)).substr(-8).split('').map(Number).map(Boolean);
+    return ['battery', 'sensor3', 'sensor2', 'sensor1', 'gps', 'bme', 'alarm', 'counter']
+        .reduce(function (obj, pos, index) {
+            obj[pos] = +bm[index];
+            return obj;
+        }, {});
+};
+bitmap2.BYTES = 1;
+
+var decode = function (bytes, mask, names) {
+
+    var maskLength = mask.reduce(function (prev, cur) {
+        return prev + cur.BYTES;
+    }, 0);
+    if (bytes.length < maskLength) {
+        throw new Error('Mask length is ' + maskLength + ' whereas input is ' + bytes.length);
+    }
+
+    names = names || [];
+    var offset = 0;
+    return mask
+        .map(function (decodeFn) {
+            var current = bytes.slice(offset, offset += decodeFn.BYTES);
+            return decodeFn(current);
+        })
+        .reduce(function (prev, cur, idx) {
+            prev[names[idx] || idx] = cur;
+            return prev;
+        }, {});
+};
+
+if (typeof module === 'object' && typeof module.exports !== 'undefined') {
+    module.exports = {
+        uint8: uint8,
+        uint16: uint16,
+        uint32: uint32,
+        int8: int8,
+        int16: int16,
+        int32: int32,
+        uptime: uptime,
+        float: float,
+        ufloat: ufloat,
+        pressure: pressure,
+        latLng: latLng,
+        hdop: hdop,
+        altitude: altitude,
+        bitmap1: bitmap1,
+        bitmap2: bitmap2,
+        version: version,
+        decode: decode
+    };
+}
--- a/src/TTNv3/plain_decodeUplink.js
+++ b/src/TTNv3/plain_decodeUplink.js
@ -0,0 +1,114 @@
+// Decoder for device payload encoder "PLAIN"
+// copy&paste to TTN Console V3 -> Applications -> Payload formatters -> Uplink -> Javascript
+// modified for The Things Stack V3 by Caspar Armster, dasdigidings e.V.
+
+function decodeUplink(input) {
+    var data = {};
+
+    if (input.fPort === 1) {
+        var i = 0;
+
+        if (input.bytes.length >= 2) {
+            data.wifi = (input.bytes[i++] << 8) | input.bytes[i++];
+        }
+     
+        if (input.bytes.length === 4 || input.bytes.length > 15) {
+            data.ble = (input.bytes[i++] << 8) | input.bytes[i++];
+        }
+
+        if (input.bytes.length > 4) {
+            data.latitude = ((input.bytes[i++] << 24) | (input.bytes[i++] << 16) | (input.bytes[i++] << 8) | input.bytes[i++]);
+            data.longitude = ((input.bytes[i++] << 24) | (input.bytes[i++] << 16) | (input.bytes[i++] << 8) | input.bytes[i++]);
+            data.sats = input.bytes[i++];
+            data.hdop = (input.bytes[i++] << 8) | (input.bytes[i++]);
+            data.altitude = ((input.bytes[i++] << 8) | (input.bytes[i++]));
+        }
+        data.pax = 0;
+        if ('wifi' in data) {
+            data.pax += data.wifi;
+        }
+        if ('ble' in data) {
+            data.pax += data.ble;
+        } 
+    }
+
+    if (input.fPort === 2) {
+        var i = 0;
+        data.voltage = ((input.bytes[i++] << 8) | input.bytes[i++]);
+        data.uptime = ((input.bytes[i++] << 56) | (input.bytes[i++] << 48) | (input.bytes[i++] << 40) | (input.bytes[i++] << 32) | (input.bytes[i++] << 24) | (input.bytes[i++] << 16) | (input.bytes[i++] << 8) | input.bytes[i++]);
+        data.cputemp = input.bytes[i++];
+        data.memory = ((input.bytes[i++] << 24) | (input.bytes[i++] << 16) | (input.bytes[i++] << 8) | input.bytes[i++]);
+        data.reset0 = input.bytes[i++];
+        data.reset1 = input.bytes[i++];
+    }
+
+    if (input.fPort === 4) {
+        var i = 0;
+        data.latitude = ((input.bytes[i++] << 24) | (input.bytes[i++] << 16) | (input.bytes[i++] << 8) | input.bytes[i++]);
+        data.longitude = ((input.bytes[i++] << 24) | (input.bytes[i++] << 16) | (input.bytes[i++] << 8) | input.bytes[i++]);
+        data.sats = input.bytes[i++];
+        data.hdop = (input.bytes[i++] << 8) | (input.bytes[i++]);
+        data.altitude = ((input.bytes[i++] << 8) | (input.bytes[i++]));
+    }
+
+    if (input.fPort === 5) {
+        var i = 0;
+        data.button = input.bytes[i++];
+    }
+
+    if (input.fPort === 6) {
+        var i = 0;
+        data.rssi = input.bytes[i++];
+        data.beacon = input.bytes[i++];
+    }
+
+    if (input.fPort === 7) {
+        var i = 0;
+        data.temperature = ((input.bytes[i++] << 8) | input.bytes[i++]);
+        data.pressure = ((input.bytes[i++] << 8) | input.bytes[i++]);
+        data.humidity = ((input.bytes[i++] << 8) | input.bytes[i++]);
+        data.air = ((input.bytes[i++] << 8) | input.bytes[i++]);
+    }
+
+    if (input.fPort === 8) {
+        var i = 0;
+        if (input.bytes.length >= 2) {
+            data.voltage = (input.bytes[i++] << 8) | input.bytes[i++];
+        }
+    }
+
+    if (input.fPort === 9) {
+        // timesync request
+        if (input.bytes.length === 1) {
+            data.timesync_seqno = input.bytes[0];
+        }
+        // epoch time answer
+        if (input.bytes.length === 5) {
+            var i = 0;
+            data.time = ((input.bytes[i++] << 24) | (input.bytes[i++] << 16) | (input.bytes[i++] << 8) | input.bytes[i++]);
+            data.timestatus = input.bytes[i++];
+        }
+    }
+
+    if (input.fPort === 10) {
+        var i = 0;
+        if (input.bytes.length >= 2) {
+            data.ens = (input.bytes[i++] << 8) | input.bytes[i++];
+        }
+    }
+
+    if (data.hdop) {
+        data.hdop /= 100;
+        data.latitude /= 1000000;
+        data.longitude /= 1000000;
+    }
+
+    data.bytes = input.bytes; // comment out if you do not want to include the original payload
+    data.port = input.fPort; // comment out if you do not want to include the port
+
+    return {
+        data: data,
+        warnings: [],
+        errors: []
+    };
+}
--- a/src/hal/ecopower.h
+++ b/src/hal/ecopower.h
@ -20,7 +20,6 @@

 #define EXT_POWER_SW    15            // Switch VDD on pin JP10, needed for RTC DS3231
 #define EXT_POWER_ON    0
-#define EXT_POWER_OFF   1

 #define HAS_LED (2) // on board green LED
 #define HAS_TWO_LED (12) // on board red LED
--- a/src/hal/heltec.h
+++ b/src/hal/heltec.h
@ -8,6 +8,7 @@
 #include <stdint.h>

 // Hardware related definitions for Heltec V1 LoRa-32 Board
+// see https://heltec-automation-docs.readthedocs.io/en/latest/esp32/wifi_lora_32/hardware_update_log.html#v1

 //#define HAS_BME 1 // Enable BME sensors in general
 //#define HAS_BME680 GPIO_NUM_21, GPIO_NUM_22 // SDA, SCL
--- a/src/hal/heltecv2.h
+++ b/src/hal/heltecv2.h
@ -8,6 +8,7 @@
 #include <stdint.h>

 // Hardware related definitions for Heltec V2 LoRa-32 Board
+// see https://heltec-automation-docs.readthedocs.io/en/latest/esp32/wifi_lora_32/hardware_update_log.html#v2

 //#define HAS_BME 1 // Enable BME sensors in general
 //#define HAS_BME680 GPIO_NUM_4, GPIO_NUM_15 // SDA, SCL
@ -22,16 +23,13 @@
 #define HAS_LED LED_BUILTIN                           // white LED on board
 #define HAS_BUTTON KEY_BUILTIN                        // button "PROG" on board

-// caveat: activating ADC2 conflicts with Wifi in current arduino-esp32
-// see https://github.com/espressif/arduino-esp32/issues/3222
-// thus we must waiver of battery monitoring 
-//#define BAT_MEASURE_ADC ADC2_GPIO13_CHANNEL  // battery probe GPIO pin
-//#define BAT_MEASURE_ADC_UNIT 2 // ADC 2
-//#define BAT_VOLTAGE_DIVIDER 2 // voltage divider 220k/100k on board
+#define BAT_MEASURE_ADC ADC2_GPIO13_CHANNEL  // battery probe GPIO pin
+#define BAT_MEASURE_ADC_UNIT 2 // ADC 2
+#define BAT_VOLTAGE_DIVIDER 2 // voltage divider 220k/100k on board

-#define EXT_POWER_SW Vext // switches battery power, Vext control 0 = on / 1 = off
-#define EXT_POWER_ON    0
-//#define EXT_POWER_OFF   1
+// switches battery power and Vext, switch logic 0 = on / 1 = off
+#define EXT_POWER_SW Vext
+#define EXT_POWER_ON 0

 // Pins for I2C interface of OLED Display
 #define MY_DISPLAY_SDA SDA_OLED
@ -43,7 +41,7 @@
 #define LORA_IRQ DIO0
 #define LORA_IO1 DIO1
 #define LORA_IO2 DIO2
-#define LORA_SCK GPIO_NUM_5
+#define LORA_SCK SCK
 #define LORA_MISO MISO
 #define LORA_MOSI MOSI
 #define LORA_RST RST_LoRa
--- a/src/hal/heltecv21.h
+++ b/src/hal/heltecv21.h
@ -0,0 +1,49 @@
+// clang-format off
+// upload_speed 921600
+// board heltec_wifi_lora_32_V2
+
+#ifndef _HELTECV21_H
+#define _HELTECV21_H
+
+#include <stdint.h>
+
+// Hardware related definitions for Heltec V2.1 LoRa-32 Board
+// see https://heltec-automation-docs.readthedocs.io/en/latest/esp32/wifi_lora_32/hardware_update_log.html#v2-1
+
+//#define HAS_BME 1 // Enable BME sensors in general
+//#define HAS_BME680 GPIO_NUM_4, GPIO_NUM_15 // SDA, SCL
+//#define BME680_ADDR BME680_I2C_ADDR_PRIMARY // connect SDIO of BME680 to GND 
+//#define HAS_BMP180
+//#define BMP180_ADDR 0x77
+
+#define HAS_LORA 1       // comment out if device shall not send data via LoRa
+#define CFG_sx1276_radio 1
+
+#define HAS_DISPLAY 1 // OLED-Display on board
+#define HAS_LED LED_BUILTIN                           // white LED on board
+#define HAS_BUTTON KEY_BUILTIN                        // button "PROG" on board
+
+#define BAT_MEASURE_ADC ADC1_GPIO37_CHANNEL  // battery probe GPIO pin
+#define BAT_VOLTAGE_DIVIDER 2 // voltage divider 220k/100k on board
+
+// switches battery power and Vext, switch logic 0 = on / 1 = off
+#define EXT_POWER_SW Vext
+#define EXT_POWER_ON 0
+
+// Pins for I2C interface of OLED Display
+#define MY_DISPLAY_SDA SDA_OLED
+#define MY_DISPLAY_SCL SCL_OLED
+#define MY_DISPLAY_RST RST_OLED
+
+// Pins for LORA chip SPI interface come from board file, we need some
+// additional definitions for LMIC
+#define LORA_IRQ DIO0
+#define LORA_IO1 DIO1
+#define LORA_IO2 DIO2
+#define LORA_SCK SCK
+#define LORA_MISO MISO
+#define LORA_MOSI MOSI
+#define LORA_RST RST_LoRa
+#define LORA_CS SS
+
+#endif
--- a/src/hal/ttgofox.h
+++ b/src/hal/ttgofox.h
@ -15,7 +15,6 @@

 #define EXT_POWER_SW GPIO_NUM_25 // switches power for LoRa chip
 #define EXT_POWER_ON    0
-#define EXT_POWER_OFF   1
 #define BAT_MEASURE_ADC ADC1_GPIO35_CHANNEL
 #define BAT_VOLTAGE_DIVIDER 2 // voltage divider 100k/100k on board
 #define HAS_BUTTON GPIO_NUM_36 // on board button (next to reset)
--- a/src/hal/ttgotwristband.h
+++ b/src/hal/ttgotwristband.h
@ -0,0 +1,58 @@
+// clang-format off
+// upload_speed 1500000
+// board pico32
+
+#ifndef _TTGOTWRISTBAND_H
+#define _TTGOTWRISTBAND_H
+
+#include <stdint.h>
+
+#define DISABLE_BROWNOUT 1 // comment out if you want to keep brownout feature
+
+#define HAS_DISPLAY 2      // TFT-LCD, support work in progess, not ready yet
+#define MY_DISPLAY_FLIP  1 // use if display is rotated
+
+#define HAS_LED NOT_A_PIN  // no on board LED (?)
+#define HAS_BUTTON (33)    // on board button A
+
+// power management settings
+#define BAT_MEASURE_ADC ADC1_GPIO35_CHANNEL // battery probe GPIO pin -> ADC1_CHANNEL_7
+#define BAT_VOLTAGE_DIVIDER 2.605f           // voltage divider
+
+// Display Settings
+#define MY_DISPLAY_WIDTH 80
+#define MY_DISPLAY_HEIGHT 160
+#define MY_DISPLAY_INVERT 1
+
+// setting for TTGO T-display
+#define USER_SETUP_LOADED 1
+#define ST7735_DRIVER 1
+
+#define CGRAM_OFFSET
+
+#define TFT_MISO -1
+#define TFT_MOSI GPIO_NUM_19 // SPI
+#define TFT_SCLK GPIO_NUM_18 // SPI
+#define TFT_CS   GPIO_NUM_5  // Chip select control
+#define TFT_DC   GPIO_NUM_23 // Data Command control
+#define TFT_RST  GPIO_NUM_26 // Reset
+#define TFT_BL   GPIO_NUM_27 // LED back-light
+#define TFT_BACKLIGHT_ON 1
+#define ST7735_GREENTAB160x80
+
+#define TFT_RGB_ORDER TFT_BGR  // Colour order Blue-Green-Red
+
+#define LOAD_GLCD   // Font 1. Original Adafruit 8 pixel font needs ~1820 bytes in FLASH
+#define LOAD_FONT2  // Font 2. Small 16 pixel high font, needs ~3534 bytes in FLASH, 96 characters
+#define LOAD_FONT4  // Font 4. Medium 26 pixel high font, needs ~5848 bytes in FLASH, 96 characters
+#define LOAD_FONT6  // Font 6. Large 48 pixel font, needs ~2666 bytes in FLASH, only characters 1234567890:-.apm
+#define LOAD_FONT7  // Font 7. 7 segment 48 pixel font, needs ~2438 bytes in FLASH, only characters 1234567890:-.
+#define LOAD_FONT8  // Font 8. Large 75 pixel font needs ~3256 bytes in FLASH, only characters 1234567890:-.
+#define LOAD_GFXFF  // FreeFonts. Include access to the 48 Adafruit_GFX free fonts FF1 to FF48 and custom fonts
+#define SMOOTH_FONT
+
+#define SPI_FREQUENCY  27000000
+#define SPI_READ_FREQUENCY 6000000
+
+#endif
+
--- a/src/lorawan.cpp
+++ b/src/lorawan.cpp
@ -64,7 +64,7 @@ void lora_setupForNetwork(bool preJoin) {
 #elif CFG_LMIC_EU_like
    // settings for TheThingsNetwork
    // Enable link check validation
-    LMIC_setLinkCheckMode(true);
+    LMIC_setLinkCheckMode(1);
 #endif

  } else {
@ -541,7 +541,7 @@ void SaveLMICToRTC(int deepsleep_sec) {
  unsigned long now = millis();

  // EU Like Bands
-#if defined(CFG_LMIC_EU_like)
+#if CFG_LMIC_EU_like
  for (int i = 0; i < MAX_BANDS; i++) {
    ostime_t correctedAvail =
        RTC_LMIC.bands[i].avail -
--- a/src/ota.cpp
+++ b/src/ota.cpp
@ -189,6 +189,8 @@ int do_ota_update() {

    while (client.available()) {
      String line = client.readStringUntil('\n');
+      String lineLowerCase = line;
+      lineLowerCase.toLowerCase();
      // Check if the line is end of headers by removing space symbol
      line.trim();
      // if the the line is empty, this is the end of the headers
@ -213,8 +215,8 @@ int do_ota_update() {
      }

      // Extracting new redirect location
-      if (line.startsWith("Location: ")) {
-        String newUrl = getHeaderValue(line, "Location: ");
+      if (lineLowerCase.startsWith("location: ")) {
+        String newUrl = getHeaderValue(line, "location: ");
        ESP_LOGI(TAG, "Got new url: %s", newUrl.c_str());
        newUrl.remove(0, newUrl.indexOf("//") + 2);
        currentHost = newUrl.substring(0, newUrl.indexOf('/'));
@ -224,14 +226,14 @@ int do_ota_update() {
      }

      // Checking headers
-      if (line.startsWith("Content-Length: ")) {
+      if (lineLowerCase.startsWith("content-length: ")) {
        contentLength =
-            atoi((getHeaderValue(line, "Content-Length: ")).c_str());
+            atoi((getHeaderValue(line, "content-length: ")).c_str());
        ESP_LOGI(TAG, "Got %d bytes from server", contentLength);
      }

-      if (line.startsWith("Content-Type: ")) {
-        String contentType = getHeaderValue(line, "Content-Type: ");
+      if (lineLowerCase.startsWith("content-type: ")) {
+        String contentType = getHeaderValue(line, "content-type: ");
        ESP_LOGI(TAG, "Got %s payload", contentType.c_str());
        if (contentType == "application/octet-stream") {
          isValidContentType = true;
--- a/src/power.cpp
+++ b/src/power.cpp
@ -14,6 +14,7 @@ esp_adc_cal_characteristics_t *adc_characs =
 static const adc1_channel_t adc_channel = BAT_MEASURE_ADC;
 #else // ADC2
 static const adc2_channel_t adc_channel = BAT_MEASURE_ADC;
+RTC_NOINIT_ATTR uint64_t RTC_reg_b;
 #endif
 static const adc_atten_t atten = ADC_ATTEN_DB_11;
 static const adc_unit_t unit = ADC_UNIT_1;
@ -171,9 +172,9 @@ void AXP192_init(void) {
 #endif // PMU_INT

 // set charging parameterss according to user settings if we have (see power.h)
-#ifdef PMU_CHARGE_CURRENT
-    pmu.setChargeControlCur(PMU_CHARGE_CURRENT);
-    pmu.setChargingTargetVoltage(PMU_CHARGE_CUTOFF);
+#ifdef PMU_CHG_CURRENT
+    pmu.setChargeControlCur(PMU_CHG_CURRENT);
+    pmu.setChargingTargetVoltage(PMU_CHG_CUTOFF);
    pmu.enableChargeing(true);
 #endif

@ -193,8 +194,10 @@ void calibrate_voltage(void) {
  adc1_config_width(ADC_WIDTH_BIT_12);
  adc1_config_channel_atten(adc_channel, atten);
 #else // ADC2
-      // adc2_config_width(ADC_WIDTH_BIT_12);
  adc2_config_channel_atten(adc_channel, atten);
+  // ADC2 wifi bug workaround, see
+  // https://github.com/espressif/arduino-esp32/issues/102
+  RTC_reg_b = READ_PERI_REG(SENS_SAR_READ_CTRL2_REG);
 #endif
  // calibrate ADC
  esp_adc_cal_value_t val_type = esp_adc_cal_characterize(
@ -229,6 +232,10 @@ uint16_t read_voltage(void) {
 #else                        // ADC2
  int adc_buf = 0;
  for (int i = 0; i < NO_OF_SAMPLES; i++) {
+    // ADC2 wifi bug workaround, see
+    // https://github.com/espressif/arduino-esp32/issues/102
+    WRITE_PERI_REG(SENS_SAR_READ_CTRL2_REG, RTC_reg_b);
+    SET_PERI_REG_MASK(SENS_SAR_READ_CTRL2_REG, SENS_SAR2_DATA_INV);
    adc2_get_raw(adc_channel, ADC_WIDTH_BIT_12, &adc_buf);
    adc_reading += adc_buf;
  }
--- a/src/wifiscan.cpp
+++ b/src/wifiscan.cpp
@ -73,11 +73,11 @@ void wifi_sniffer_init(void) {
  esp_wifi_set_promiscuous_rx_cb(&wifi_sniffer_packet_handler);

  // setup wifi channel hopping timer
-  WifiChanTimer =
-      xTimerCreate("WifiChannelTimer",
-                   (cfg.wifichancycle > 0) ? pdMS_TO_TICKS(cfg.wifichancycle)
-                                           : pdMS_TO_TICKS(50),
-                   pdTRUE, (void *)0, switchWifiChannel);
+  WifiChanTimer = xTimerCreate("WifiChannelTimer",
+                               (cfg.wifichancycle > 0)
+                                   ? pdMS_TO_TICKS(cfg.wifichancycle * 10)
+                                   : pdMS_TO_TICKS(50),
+                               pdTRUE, (void *)0, switchWifiChannel);
 }

 void switch_wifi_sniffer(uint8_t state) {