Bluetooth classic stops working after running .begin()

[alex1115alex]

I'm trying to use Bluetooth (classic, not BLE) and display composite video at the same time, but it seems as if Bluetooth stops working once the video output starts.

Has anyone run into a similar issue? If so, how did you work around this limitation?

[Roger-random]

Have you looked at ESP_8_BIT's Bluetooth classic input device support? Since ESP_8_BIT had such support, there should be no fundamental reason preventing Bluetooth from working here.

This library extracted only the color composite video generation code from ESP_8_BIT, stripping out everything else. If a project requires Bluetooth, perhaps one of these two approaches would work:

1. Fork this project and add ESP_8_BIT Bluetooth back in.
2. Fork ESP_8_BIT and keep color composite and Bluetooth, strip out the rest.

[alex1115alex]

Sorry about the late response. I also found a solution, so feel free to close the issue:

I couldn't get it running on my HiLetGo ESP32, so I tried it on the TinyPICO which has more memory (Chip is ESP32-PICO-D4 (revision 1)). I also freed up the memory pertaining to BLE which seemed to do the trick. Code:

#include "BluetoothSerial.h"
#include <BLEDevice.h>
#include <BLEUtils.h>
#include <BLEServer.h>
#include "esp_bt.h"
#include "esp32-hal-bt.h"

btStarted();
esp_bt_controller_mem_release(ESP_BT_MODE_BLE);
esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
bt_cfg.mode = ESP_BT_MODE_CLASSIC_BT;
esp_bt_controller_init(&bt_cfg);
esp_bt_controller_enable(ESP_BT_MODE_CLASSIC_BT);
SerialBT.begin("ESP32test"); //start bluetooth
videoOut.begin(); //start video

[Roger-random]

Thank you for letting us know. I'll add "ESP32-PICO-D4 (revision 1)" to the list of ESP32 chips known to work with this library.

[normen]

Can confirm the above workaround for disabling BLE is needed on the ESP32-NodeMCU v1 as well.