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Added bluetooth communication.

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This commit is contained in:
Vojtěch Pour 2022-11-18 21:46:42 +01:00
parent a53555446e
commit 6695e71370
1 changed files with 3 additions and 40 deletions
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43
bluetooth_connect/bluetooth_connect.ino
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@ -1,39 +1,11 @@
/**
* Bluetooth Classic Example
* Scan for devices - asyncronously, print device as soon as found
* query devices for SPP - SDP profile
* connect to first device offering a SPP connection
*
* Example python server:
* source: https://gist.github.com/ukBaz/217875c83c2535d22a16ba38fc8f2a91
*
* Tested with Raspberry Pi onboard Wifi/BT, USB BT 4.0 dongles, USB BT 1.1 dongles,
* 202202: does NOT work with USB BT 2.0 dongles when esp32 aduino lib is compiled with SSP support!
* see https://github.com/espressif/esp-idf/issues/8394
*
* use ESP_SPP_SEC_ENCRYPT|ESP_SPP_SEC_AUTHENTICATE in connect() if remote side requests 'RequireAuthentication': dbus.Boolean(True),
* use ESP_SPP_SEC_NONE or ESP_SPP_SEC_ENCRYPT|ESP_SPP_SEC_AUTHENTICATE in connect() if remote side has Authentication: False
*/
#include <map>
#include <BluetoothSerial.h>
#if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED)
#error Bluetooth is not enabled! Please run `make menuconfig` to and enable it
#endif
#if !defined(CONFIG_BT_SPP_ENABLED)
#error Serial Bluetooth not available or not enabled. It is only available for the ESP32 chip.
#endif
BluetoothSerial SerialBT;
#define BT_DISCOVER_TIME 10000
esp_spp_sec_t sec_mask=ESP_SPP_SEC_NONE; // or ESP_SPP_SEC_ENCRYPT|ESP_SPP_SEC_AUTHENTICATE to request pincode confirmation
esp_spp_role_t role=ESP_SPP_ROLE_SLAVE; // or ESP_SPP_ROLE_MASTER
// std::map<BTAddress, BTAdvertisedDeviceSet> btDeviceList;
esp_spp_sec_t sec_mask=ESP_SPP_SEC_NONE;
esp_spp_role_t role=ESP_SPP_ROLE_SLAVE;
void setup() {
Serial.begin(115200);
@ -41,15 +13,10 @@ void setup() {
Serial.println("========== serialBT failed!");
abort();
}
// SerialBT.setPin("1234"); // doesn't seem to change anything
// SerialBT.enableSSP(); // doesn't seem to change anything
Serial.println("Starting discoverAsync...");
BTScanResults* btDeviceList = SerialBT.getScanResults(); // maybe accessing from different threads!
BTScanResults* btDeviceList = SerialBT.getScanResults();
if (SerialBT.discoverAsync([](BTAdvertisedDevice* pDevice) {
// BTAdvertisedDeviceSet*set = reinterpret_cast<BTAdvertisedDeviceSet*>(pDevice);
// btDeviceList[pDevice->getAddress()] = * set;
Serial.printf(">>>>>>>>>>>Found a new device asynchronously: %s\n", pDevice->toString().c_str());
} )
) {
@ -87,13 +54,9 @@ void setup() {
}
}
String sendData="Hi from esp32!\n";
void loop() {
if(! SerialBT.isClosed() && SerialBT.connected()) {
if(SerialBT.available()) {
Serial.print("rx: ");
while(SerialBT.available()) {
int c=SerialBT.read();
if(c >= 0) {