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@KurtE
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As I mentioned on a PJRC forum post, I have a version of this library building and running on Teensy 4.1 and Micromod using the USBHost_T36 library and a couple of edits to this library. In particular disable the Serial transport and code for its own Transport.
Which now appears to be working. At least with a few of your examples. Like the ones to do with LEDs.
While doing this, I am seeing a lot of compiler warnings in the code. And I believe most of them are not Teensy specific. Note: I am using the latest Teensyduino IDE beta which we are trying a more recent version of GCC which is showing up a lot more compiler warning than earlier ones.
Some of the warnings:
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-compile\11円.3.1-beta1/arm/bin/arm-none-eabi-g++" -c -O2 -g -Wall -ffunction-sections -fdata-sections -nostdlib -MMD -std=gnu++14 -fno-exceptions -fpermissive -fno-rtti -fno-threadsafe-statics -felide-constructors -Wno-error=narrowing -mthumb -mcpu=cortex-m7 -mfloat-abi=hard -mfpu=fpv5-d16 -D__IMXRT1062__ -DTEENSYDUINO=158 -DARDUINO=10607 -DARDUINO_TEENSY_MICROMOD -DF_CPU=600000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH "-IC:\\Users\\kurte\\AppData\\Local\\Temp\\arduino-sketch-43071A1C59D1A4F494A82C8D8FA363A4/pch" "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\0円.58.2\\cores\\teensy4" "-Ic:\\Users\\kurte\\Documents\\Arduino\\libraries\\ArduinoBLE\\src" "-Ic:\\Users\\kurte\\Documents\\Arduino\\libraries\\USBHost_T36" "-Ic:\\Users\\kurte\\Documents\\Arduino\\libraries\\SDFat\\src" "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\0円.58.2\\libraries\\SPI" "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\0円.58.2\\libraries\\EEPROM" "c:\\Users\\kurte\\Documents\\Arduino\\libraries\\ArduinoBLE\\src\\remote\\BLERemoteService.cpp" -o "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino-sketch-43071A1C59D1A4F494A82C8D8FA363A4\\libraries\\ArduinoBLE\\remote\\BLERemoteService.cpp.o"
In file included from c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src/utility/GATT.h:26,
from c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\local\BLELocalCharacteristic.cpp:25:
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src/local/BLELocalCharacteristic.h: In constructor 'BLELocalCharacteristic::BLELocalCharacteristic(const char*, uint16_t, int, bool)':
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src/local/BLELocalCharacteristic.h:90:12: warning: 'BLELocalCharacteristic::_cccdValue' will be initialized after [-Wreorder]
90 | uint16_t _cccdValue;
| ^~~~~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src/local/BLELocalCharacteristic.h:79:12: warning: 'uint8_t BLELocalCharacteristic::_permissions' [-Wreorder]
79 | uint8_t _permissions;
| ^~~~~~~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\local\BLELocalCharacteristic.cpp:32:1: warning: when initialized here [-Wreorder]
32 | BLELocalCharacteristic::BLELocalCharacteristic(const char* uuid, uint16_t permissions, int valueSize, bool fixedLength) :
| ^~~~~~~~~~~~~~~~~~~~~~
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-compile\11円.3.1-beta1/arm/bin/arm-none-eabi-g++" -c -O2 -g -Wall -ffunction-sections -fdata-sections -nostdlib -MMD -std=gnu++14 -fno-exceptions -fpermissive -fno-rtti -fno-threadsafe-statics -felide-constructors -Wno-error=narrowing -mthumb -mcpu=cortex-m7 -mfloat-abi=hard -mfpu=fpv5-d16 -D__IMXRT1062__ -DTEENSYDUINO=158 -DARDUINO=10607 -DARDUINO_TEENSY_MICROMOD -DF_CPU=600000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH "-IC:\\Users\\kurte\\AppData\\Local\\Temp\\arduino-sketch-43071A1C59D1A4F494A82C8D8FA363A4/pch" "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\0円.58.2\\cores\\teensy4" "-Ic:\\Users\\kurte\\Documents\\Arduino\\libraries\\ArduinoBLE\\src" "-Ic:\\Users\\kurte\\Documents\\Arduino\\libraries\\USBHost_T36" "-Ic:\\Users\\kurte\\Documents\\Arduino\\libraries\\SDFat\\src" "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\0円.58.2\\libraries\\SPI" "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\0円.58.2\\libraries\\EEPROM" "c:\\Users\\kurte\\Documents\\Arduino\\libraries\\ArduinoBLE\\src\\utility\\GATT.cpp" -o "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino-sketch-43071A1C59D1A4F494A82C8D8FA363A4\\libraries\\ArduinoBLE\\utility\\GATT.cpp.o"
And:
"C:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\tools\\teensy-compile\11円.3.1-beta1/arm/bin/arm-none-eabi-g++" -c -O2 -g -Wall -ffunction-sections -fdata-sections -nostdlib -MMD -std=gnu++14 -fno-exceptions -fpermissive -fno-rtti -fno-threadsafe-statics -felide-constructors -Wno-error=narrowing -mthumb -mcpu=cortex-m7 -mfloat-abi=hard -mfpu=fpv5-d16 -D__IMXRT1062__ -DTEENSYDUINO=158 -DARDUINO=10607 -DARDUINO_TEENSY_MICROMOD -DF_CPU=600000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH "-IC:\\Users\\kurte\\AppData\\Local\\Temp\\arduino-sketch-43071A1C59D1A4F494A82C8D8FA363A4/pch" "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\0円.58.2\\cores\\teensy4" "-Ic:\\Users\\kurte\\Documents\\Arduino\\libraries\\ArduinoBLE\\src" "-Ic:\\Users\\kurte\\Documents\\Arduino\\libraries\\USBHost_T36" "-Ic:\\Users\\kurte\\Documents\\Arduino\\libraries\\SDFat\\src" "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\0円.58.2\\libraries\\SPI" "-IC:\\Users\\kurte\\AppData\\Local\\Arduino15\\packages\\teensy\\hardware\\avr\0円.58.2\\libraries\\EEPROM" "c:\\Users\\kurte\\Documents\\Arduino\\libraries\\ArduinoBLE\\src\\utility\\keyDistribution.cpp" -o "C:\\Users\\kurte\\AppData\\Local\\Temp\\arduino-sketch-43071A1C59D1A4F494A82C8D8FA363A4\\libraries\\ArduinoBLE\\utility\\keyDistribution.cpp.o"
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp: In member function 'virtual void HCIClass::poll(long unsigned int)':
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp:141:20: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare]
141 | if (_recvIndex >= sizeof(_recvBuffer)) {
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp: In member function 'virtual int HCIClass::tryResolveAddress(uint8_t*, uint8_t*)':
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp:565:14: warning: unused variable 'memcheck' [-Wunused-variable]
565 | uint8_t* memcheck;
| ^~~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp:557:11: warning: variable 'irk' set but not used [-Wunused-but-set-variable]
557 | uint8_t irk[16];
| ^~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\L2CAPSignaling.cpp: In member function 'virtual void L2CAPSignalingClass::handleSecurityData(uint16_t, uint8_t, uint8_t*)':
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\L2CAPSignaling.cpp:271:8: warning: unused variable 'pairingFailed' [-Wunused-variable]
271 | } *pairingFailed = (PairingFailed*)data;
| ^~~~~~~~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\L2CAPSignaling.cpp:320:7: warning: unused variable 'readPublicKeyCommand' [-Wunused-variable]
320 | } readPublicKeyCommand = {
| ^~~~~~~~~~~~~~~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\L2CAPSignaling.cpp: In member function 'virtual void L2CAPSignalingClass::smCalculateLTKandConfirm(uint16_t, uint8_t*)':
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\L2CAPSignaling.cpp:421:19: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare]
421 | for(int i=0; i<sizeof(Eb); i++){
| ~^~~~~~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp: In member function 'virtual void HCIClass::handleEventPkt(uint8_t, uint8_t*)':
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp:979:13: warning: unused variable 'BD_ADDRs' [-Wunused-variable]
979 | uint8_t BD_ADDRs[num_keys][6];
| ^~~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp:980:13: warning: unused variable 'LKs' [-Wunused-variable]
980 | uint8_t LKs[num_keys][16];
| ^~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp:981:10: warning: variable 'nAddresss' set but not used [-Wunused-but-set-variable]
981 | auto nAddresss = [pdata](uint8_t nAddr)->uint8_t*{
| ^~~~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp:984:10: warning: variable 'nLK' set but not used [-Wunused-but-set-variable]
984 | auto nLK = [pdata](uint8_t nLK)->uint8_t*{
| ^~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp:999:8: warning: unused variable 'cmdHardwareError' [-Wunused-variable]
999 | } *cmdHardwareError = (CmdHardwareError*)&pdata[sizeof(HCIEventHdr)];
| ^~~~~~~~~~~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp:1099:17: warning: unused variable 'address' [-Wunused-variable]
1099 | uint8_t address[6];
| ^~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp:1100:17: warning: variable 'BDAddr' set but not used [-Wunused-but-set-variable]
1100 | uint8_t BDAddr[6];
| ^~~~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp:1320:25: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare]
1320 | for(int i=0; i<sizeof(pairingConfirm.cb);i++){
| ~^~~~~~~~~~~~~~~~~~~~~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp:1330:25: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare]
1330 | for(int i=0; i<sizeof(HCI.remotePublicKeyBuffer); i++){
| ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp:1329:19: warning: variable 'remotePublicKeyReversed' set but not used [-Wunused-but-set-variable]
1329 | uint8_t remotePublicKeyReversed[sizeof(HCI.remotePublicKeyBuffer)];
| ^~~~~~~~~~~~~~~~~~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\HCI.cpp:1016:7: warning: case value '10' not in enumerated type 'LE_META_EVENT' [-Wswitch]
1016 | case 0x0A:{
| ^~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\btct.cpp: In member function 'int BluetoothCryptoToolbox::f5(uint8_t*, uint8_t*, uint8_t*, uint8_t*, uint8_t*, uint8_t*, uint8_t*)':
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\btct.cpp:63:13: warning: variable 'ADD_M' set but not used [-Wunused-but-set-variable]
63 | uint8_t ADD_M[7];
| ^~~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\btct.cpp:64:13: warning: variable 'ADD_S' set but not used [-Wunused-but-set-variable]
64 | uint8_t ADD_S[7];
| ^~~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\btct.cpp: In member function 'void BluetoothCryptoToolbox::testAh()':
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\btct.cpp:138:13: warning: variable 'r' set but not used [-Wunused-but-set-variable]
138 | uint8_t r[3] = {0x70,0x81,0x94};
| ^
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\btct.cpp:139:13: warning: unused variable 'expected_AES' [-Wunused-variable]
139 | uint8_t expected_AES[16] = {0x15,0x9d,0x5f,0xb7,0x2e,0xbe,0x23,0x11,0xa4,0x8c,0x1b,0xdc,0xc4,0x0d,0xfb,0xaa};
| ^~~~~~~~~~~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\btct.cpp: In member function 'void BluetoothCryptoToolbox::testg2()':
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\btct.cpp:173:13: warning: unused variable 'AES' [-Wunused-variable]
173 | uint8_t AES[16] = {0x15,0x36,0xd1,0x8d,0xe3,0xd2,0x0d,0xf9,0x9b,0x70,0x44,0xc1,0x2f,0x9e,0xd5,0xba};
| ^~~
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\L2CAPSignaling.cpp: In member function 'virtual void L2CAPSignalingClass::handleSecurityData(uint16_t, uint8_t, uint8_t*)':
c:\Users\kurte\Documents\Arduino\libraries\ArduinoBLE\src\utility\L2CAPSignaling.cpp:296:13: warning: 'i' may be used uninitialized [-Wmaybe-uninitialized]
296 | for(int i; i<6; i++) peerAddress[5-i] = identityAddress->address[i];
| ^
Compiling library "USBHost_t36"
Note: the last one does look like a bug, as the initial value of i is not set...
Now back to experimenting. Right now, trying to figure out why the Peripheral Explorer example, when modified to look at some real hardware, like:
Xbox One controller updated to current firmware (BLE) cannot discover attributes.
Likewise for Microsoft Surface Arc Mouse.
like:
Bluetooth® Low Energy Central - Peripheral Explorer
Found e1:1b:54:3b:1b:21 ''
Found 20:24:93:53:d2:12 ''
Found 40:ae:a8:59:63:5b ''
Found 4d:82:4e:f5:6c:96 ''
Found 22:7c:49:50:eb:21 '' fd6f
Found 78:ca:b4:94:96:d6 ''
Found 67:12:a5:9c:57:ad ''
Found d8:ec:5e:82:11:30 'Linksys' 00002080-8eab-46c2-b788-0e9440016fd1
Found e1:59:47:79:f2:be 'Surface Arc Mouse' 1812
Connecting ...
Connected
Discovering attributes ...
Attribute discovery failed!
Device name:
Appearance: 0x0
Service Count: 0
Disconnecting ...
Disconnected
But that is probably outside of this issue.