Hi all
I hope this is put into the correct place .
first post be kind.
I am trying to build a page turner with esp32
https://codeandlife.com/2021/05/23/diy-bluetooth-sheet-music-page-turn-pedal-with-esp32/
The code i am using:
#include <BleKeyboard.h>
// shorter 15 character name seems to work better w. iPad
BleKeyboard bleKeyboard("ESP32-Keyboard2", "Me", 100);
#define BUTTON_PIN 4
void setup() {
pinMode(BUTTON_PIN, INPUT_PULLUP);
Serial.begin(115200);
Serial.println("Starting BLE work!");
bleKeyboard.begin();
}
void loop() {
static int debug = 0, counter = 0;
char button = digitalRead(BUTTON_PIN) == LOW;
if(button) counter++;
if(bleKeyboard.isConnected() && !button && counter > 1) {
Serial.println(counter);
bleKeyboard.write(counter < 10 ? KEY_RIGHT_ARROW : KEY_LEFT_ARROW);
delay(100);
bleKeyboard.releaseAll();
counter = 0;
}
if(++debug % 20 == 0) Serial.println("sec");
delay(50);
}
but i am getting the following errors:
C:\Users\steve\Documents\Arduino\libraries\ESP32_BLE_Keyboard\BleKeyboard.cpp: In member function 'void BleKeyboard::begin()':
C:\Users\steve\Documents\Arduino\libraries\ESP32_BLE_Keyboard\BleKeyboard.cpp:105:19: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string'} to 'String'
105 | BLEDevice::init(deviceName);
| ^~~~~~~~~~
| |
| std::string {aka std::__cxx11::basic_string}
In file included from C:\Users\steve\Documents\Arduino\libraries\ESP32_BLE_Keyboard\BleKeyboard.cpp:7:
C:\Users\steve\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.1.1\libraries\BLE\src/BLEDevice.h:41:27: note: initializing argument 1 of 'static void BLEDevice::init(String)'
41 | static void init(String deviceName); // Initialize the local BLE environment.
| ~~~~~~~^~~~~~~~~~
C:\Users\steve\Documents\Arduino\libraries\ESP32_BLE_Keyboard\BleKeyboard.cpp:116:32: error: no matching function for call to 'BLECharacteristic::setValue(std::string&)'
116 | hid->manufacturer()->setValue(deviceManufacturer);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
In file included from C:\Users\steve\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.1.1\libraries\BLE\src/BLEServer.h:23,
from C:\Users\steve\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.1.1\libraries\BLE\src/BLEDevice.h:21:
C:\Users\steve\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.1.1\libraries\BLE\src/BLECharacteristic.h:83:8: note: candidate: 'void BLECharacteristic::setValue(double&)'
83 | void setValue(double &data64);
| ^~~~~~~~
C:\Users\steve\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.1.1\libraries\BLE\src/BLECharacteristic.h:83:25: note: no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string'} to 'double&'
83 | void setValue(double &data64);
| ~~~~~~~~^~~~~~
C:\Users\steve\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.1.1\libraries\BLE\src/BLECharacteristic.h:82:8: note: candidate: 'void BLECharacteristic::setValue(float&)'
82 | void setValue(float &data32);
| ^~~~~~~~
C:\Users\steve\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.1.1\libraries\BLE\src/BLECharacteristic.h:82:24: note: no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string'} to 'float&'
82 | void setValue(float &data32);
| ~~~~~~~^~~~~~
C:\Users\steve\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.1.1\libraries\BLE\src/BLECharacteristic.h:81:8: note: candidate: 'void BLECharacteristic::setValue(int&)'
81 | void setValue(int &data32);
| ^~~~~~~~
C:\Users\steve\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.1.1\libraries\BLE\src/BLECharacteristic.h:81:22: note: no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string'} to 'int&'
81 | void setValue(int &data32);
| ~~~~~^~~~~~
C:\Users\steve\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.1.1\libraries\BLE\src/BLECharacteristic.h:80:8: note: candidate: 'void BLECharacteristic::setValue(uint32_t&)'
80 | void setValue(uint32_t &data32);
| ^~~~~~~~
C:\Users\steve\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.1.1\libraries\BLE\src/BLECharacteristic.h:80:27: note: no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string'} to 'uint32_t&' {aka 'long unsigned int&'}
80 | void setValue(uint32_t &data32);
| ~~~~~~~~~~^~~~~~
C:\Users\steve\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.1.1\libraries\BLE\src/BLECharacteristic.h:79:8: note: candidate: 'void BLECharacteristic::setValue(uint16_t&)'
79 | void setValue(uint16_t &data16);
| ^~~~~~~~
C:\Users\steve\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.1.1\libraries\BLE\src/BLECharacteristic.h:79:27: note: no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string'} to 'uint16_t&' {aka 'short unsigned int&'}
79 | void setValue(uint16_t &data16);
| ~~~~~~~~~~^~~~~~
C:\Users\steve\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.1.1\libraries\BLE\src/BLECharacteristic.h:77:8: note: candidate: 'void BLECharacteristic::setValue(uint8_t*, size_t)'
77 | void setValue(uint8_t *data, size_t size);
| ^~~~~~~~
C:\Users\steve\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.1.1\libraries\BLE\src/BLECharacteristic.h:77:8: note: candidate expects 2 arguments, 1 provided
C:\Users\steve\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.1.1\libraries\BLE\src/BLECharacteristic.h:78:8: note: candidate: 'void BLECharacteristic::setValue(String)'
78 | void setValue(String value);
| ^~~~~~~~
C:\Users\steve\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.1.1\libraries\BLE\src/BLECharacteristic.h:78:24: note: no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string'} to 'String'
78 | void setValue(String value);
| ~~~~~~~^~~~~
exit status 1
Compilation error: exit status 1
I hope this is a simple fix.
all i have programmed was wled which was an online install, so easy .
Many thanks
This may have been in regards of using "std::string" vs "String". There is an open issue (https://github.com/T-vK/ESP32-BLE-Keyboard/issues/353#issuecomment-2724594844), and if you do not use NIMBle, this might work for you:
https://github.com/T-vK/ESP32-BLE-Keyboard/issues/353#issuecomment-2724594844
Replace BleKeyboard.h and BleKeyboard.cpp , and see if it compiles.
This may have been in regards of using "std::string" vs "String". There is an open issue (#353 (comment)), and if you do not use NIMBle, this might work for you: #353 (comment) Replace BleKeyboard.h and BleKeyboard.cpp , and see if it compiles.
Thank You this fix the problem!
This is thanks to Norbert!
one last thing
with the following code:
what do i need to change?
as all i want is 1 button to pause video on one press and then rewind 10 -15 sec on long press?
#include <BleKeyboard.h>
// shorter 15 character name seems to work better w. iPad
BleKeyboard bleKeyboard("ESP32-Keyboard2", "Me", 100);
#define BUTTON_PIN 4
void setup() {
pinMode(BUTTON_PIN, INPUT_PULLUP);
Serial.begin(115200);
Serial.println("Starting BLE work!");
bleKeyboard.begin();
}
void loop() {
static int debug = 0, counter = 0;
char button = digitalRead(BUTTON_PIN) == LOW;
if(button) counter++;
if(bleKeyboard.isConnected() && !button && counter > 1) {
Serial.println(counter);
bleKeyboard.write(counter < 10 ? KEY_RIGHT_ARROW : KEY_LEFT_ARROW);
delay(100);
bleKeyboard.releaseAll();
counter = 0;
}
if(++debug % 20 == 0) Serial.println("sec");
delay(50);
}
I hope someone can write in the correct code for me please?
I understand i need KEY_MEDIA_PLAY_PAUSE but not sure the code to rewind 10-15 seconds backwards?
Many thanks
T-vK
