Search found 3 matches
- Wed Jul 04, 2018 2:02 am
- Forum: General Discussion
- Topic: flash read err, 1000
- Replies: 1
- Views: 3656
flash read err, 1000
For one of the ESP32_Devkitc_v4 board, make erase_flash then make flash monitor unable to boot it up (show below). But if I briefly short GPIO12 to 3V3, /dev/cu.SLAB_USBtoUART would be disconnect and red LED dimmed, this time press En button would boot normally. If I short GPIO12 for too long. The /...
- Sat Dec 02, 2017 2:54 am
- Forum: ESP-IDF
- Topic: smartphone esp32 ble communcation and encryption
- Replies: 3
- Views: 7109
Re: smartphone esp32 ble communcation and encryption
Once connected, the encryption is taken care by the BLE stack. The SDK example such as spp server can help to create your own GATT servers. I found web Bluetooth is the easiest to work with as the client. Good luck.
- Wed Nov 29, 2017 2:46 pm
- Forum: General Discussion
- Topic: BLE low power mode in ESP Wroom32
- Replies: 1
- Views: 3763
Re: BLE low power mode in ESP Wroom32
From esp32_datasheet, at normal speed it takes 25mA for core, 100mA for BLE Rx, and 130mA for BLE Tx at 0dBm. So the short answer might be no. EPS32 is not in the same 'battery optimised beacon and bracket' class of those BLE only chips... I'm more interested to find out the range when set BLE Tx at...