mcopy/ino/mcopy_cam_canon_ble/CanonBLERemote.cpp

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#include "CanonBLERemote.h"
#include <Arduino.h>
#include <BLEDevice.h>
static const char *LOG_TAG = "MySecurity";
advdCallback::advdCallback(BLEUUID service_uuid, bool *ready_to_connect, BLEAddress *address_to_connect)
{
service_uuid_wanted = service_uuid;
pready_to_connect = ready_to_connect;
paddress_to_connect = address_to_connect;
}
void advdCallback::onResult(BLEAdvertisedDevice advertisedDevice)
{
if (advertisedDevice.haveServiceUUID())
{ //Check if device has service UUID available.
if (service_uuid_wanted.equals(advertisedDevice.getServiceUUID()))
{
*paddress_to_connect = advertisedDevice.getAddress();
*pready_to_connect = true;
advertisedDevice.getScan()->stop();
}
}
}
void ConnectivityState::onConnect(BLEClient *pclient)
{
// Serial.println("Device is connected");
connected = true;
}
void ConnectivityState::onDisconnect(BLEClient *pclient)
{
// Serial.println("Device disconnnect");
connected = false;
}
bool ConnectivityState::isConnected()
{
return connected;
}
class SecurityCallback : public BLESecurityCallbacks
{
uint32_t onPassKeyRequest()
{
return 123456;
}
void onPassKeyNotify(uint32_t pass_key)
{
ESP_LOGE(LOG_TAG, "The passkey Notify number:%d", pass_key);
}
bool onConfirmPIN(uint32_t pass_key)
{
ESP_LOGI(LOG_TAG, "The passkey YES/NO number:%d", pass_key);
vTaskDelay(5000);
return true;
}
bool onSecurityRequest()
{
ESP_LOGI(LOG_TAG, "Security Request");
return true;
}
void onAuthenticationComplete(esp_ble_auth_cmpl_t auth_cmpl)
{
if (auth_cmpl.success)
{
ESP_LOGI(LOG_TAG, "remote BD_ADDR:");
esp_log_buffer_hex(LOG_TAG, auth_cmpl.bd_addr, sizeof(auth_cmpl.bd_addr));
ESP_LOGI(LOG_TAG, "address type = %d", auth_cmpl.addr_type);
}
ESP_LOGI(LOG_TAG, "pair status = %s", auth_cmpl.success ? "success" : "fail");
}
};
CanonBLERemote::CanonBLERemote(String name) : SERVICE_UUID("00050000-0000-1000-0000-d8492fffa821"),
PAIRING_SERVICE("00050002-0000-1000-0000-d8492fffa821"),
SHUTTER_CONTROL_SERVICE("00050003-0000-1000-0000-d8492fffa821")
{
device_name = name;
// Add our connection callback for state tracking.
pclient->setClientCallbacks(pconnection_state);
}
void CanonBLERemote::init()
{
BLEDevice::init(device_name.c_str());
BLEDevice::setEncryptionLevel(ESP_BLE_SEC_ENCRYPT_NO_MITM);
BLEDevice::setSecurityCallbacks(new SecurityCallback());
if (nvs.begin())
{
log_e("Initialize NVS Success");
String address = nvs.getString("cameraaddr");
if (address.length() == 17)
{
// Serial.printf("Paired camera address: %s\n", address.c_str());
camera_address = BLEAddress(address.c_str());
}
else
{
// Serial.println("No camera has been paired yet.");
}
}
else
{
log_e("Initialize NVS Failed");
}
}
// Purpose : Scanning for new BLE devices around.
// When found -> advdCallback::OnResult
void CanonBLERemote::scan(unsigned int scan_duration)
{
log_i("Start BLE scan");
BLEScan *pBLEScan = BLEDevice::getScan();
advdCallback *advert_dev_callback = new advdCallback(SERVICE_UUID, &ready_to_connect, &camera_address);
pBLEScan->setAdvertisedDeviceCallbacks(advert_dev_callback); // Retrieve a Scanner and set the callback we want to use to be informed when we have detected a new device.
pBLEScan->setActiveScan(true);
pBLEScan->start(scan_duration); // Specify that we want active scanning and start the scan to run for 30 seconds.
}
BLEAddress CanonBLERemote::getPairedAddress()
{
return camera_address;
}
String CanonBLERemote::getPairedAddressString()
{
return String(camera_address.toString().c_str());
}
/**
* Scan and pair camera
*
* This function should be called only when you want to pair with the new camera, and the camera is in remote paring screen.
* After paired, camera mac address will be stored in ESP32 NVS for later connection use.
*
* @param scan_duration : Scan duration in seconds
*/
bool CanonBLERemote::pair(unsigned int scan_duration)
{
BLEDevice::setEncryptionLevel(ESP_BLE_SEC_ENCRYPT_MITM);
log_i("Scanning for camera...");
scan(scan_duration);
unsigned long start_ms = millis();
while (!ready_to_connect && millis() - start_ms < scan_duration * 1000)
{
}
if (ready_to_connect)
{
log_i("Canon device found");
// Serial.println(camera_address.toString().c_str());
}
else
{
log_i("Camera not found");
return false;
}
// Pair camera
log_i("Pairing..");
if (pclient->connect(camera_address))
{
// Acquire reference to main service
pRemoteService = pclient->getService(SERVICE_UUID);
if (pRemoteService != nullptr)
{
// Acquire reference to BLE characteristics
pRemoteCharacteristic_Pairing = pRemoteService->getCharacteristic(PAIRING_SERVICE);
if ((pRemoteCharacteristic_Pairing != nullptr))
{
// Send request on pairing service from external device
String device_name_ = " " + device_name + " "; //Pairing message to send
byte cmdPress[device_name_.length()]; // Stocking list of Bytes char of the message
device_name_.getBytes(cmdPress, device_name_.length()); // message Parser
cmdPress[0] = {0x03};
pRemoteCharacteristic_Pairing->writeValue(cmdPress, sizeof(cmdPress), false); // Writing to Canon_pairing_service
log_e("Camera paring success");
delay(200);
disconnect();
BLEDevice::setEncryptionLevel(ESP_BLE_SEC_ENCRYPT_NO_MITM);
delay(200);
connect();
nvs.setString("cameraaddr", String(camera_address.toString().c_str()));
if (nvs.commit())
{
log_i("Saving camera's address to NVS success");
return true;
}
else
{
log_e("Storing camera's address to NVS failed");
return false;
}
}
else
{
log_e("Couldn't acquire the pairing or shutter service");
}
}
else
{
log_e("Couldn't acquire the remote main service");
}
}
else
{
log_e("Couldn't connect the BLEClient to the device");
}
return false;
}
bool CanonBLERemote::connect()
{
if (pclient->connect(camera_address))
{
pRemoteService = pclient->getService(SERVICE_UUID);
if (pRemoteService != nullptr)
{
// Serial.println("Get remote service OK");
pRemoteCharacteristic_Trigger = pRemoteService->getCharacteristic(SHUTTER_CONTROL_SERVICE);
if (pRemoteCharacteristic_Trigger != nullptr)
{
log_i("Camera connection Success");
// disconnect(); // Disconnect remote from the camera every time after action, as the real canon remote did.
return true;
}
else
{
log_e("Get trigger service failed");
}
}
else
{
log_e("Couldn't acquire the remote main service");
}
disconnect();
}
return false;
}
void CanonBLERemote::disconnect()
{
pclient->disconnect();
}
bool CanonBLERemote::isConnected()
{
return pconnection_state->isConnected();
}
/** Trigger Camera
* If the camera is in photo mode, it will take a single picture.
* If the camera is in movie mode, it will start/stop movie recording.
*/
bool CanonBLERemote::trigger()
{
if (!isConnected())
{
if (!connect())
{
return false;
}
}
byte cmdByte = {MODE_IMMEDIATE | BUTTON_RELEASE}; // Binary OR : Concatenate Mode and Button
pRemoteCharacteristic_Trigger->writeValue(cmdByte, false); // Set the characteristic's value to be the array of bytes that is actually a string.
delay(200);
pRemoteCharacteristic_Trigger->writeValue(MODE_IMMEDIATE, false);
delay(50);
return true;
}
bool CanonBLERemote::focus()
{
if (!isConnected())
{
if (!connect())
{
return false;
}
}
byte cmdByte[] = {MODE_IMMEDIATE | BUTTON_FOCUS}; // Binary OR : Concatenate Mode and Button
pRemoteCharacteristic_Trigger->writeValue(cmdByte, sizeof(cmdByte)); // Set the characteristic's value to be the array of bytes that is actually a string.
delay(200);
pRemoteCharacteristic_Trigger->writeValue(MODE_IMMEDIATE, sizeof(MODE_IMMEDIATE));
return true;
}