BLK IO

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Control Commands

2018-05-11 134040.png
  • Pin Definition
  • All pins connect to ground pin of LED
  • All commands should be end up with \r\n
Pin MCU PIN v1.1 Command v1.0 Command Note V1.1 Custom
1 PB5 1N - 1F N1 - F1
2 PB4 2N - 2F N2 - F2
3 PC3 3N - 3F N3 - F3
4 PC4 4N - 4F N4 - F4
5 PC5 5N - 5F N5 - F5
6 PC6 6N - 6F N6 - F6
7 PC7 7N - 7F N7 - F7
8 PD3 8N - 8F N8 - F8 Also BL status LED pin (1)
9 PD2 9N - 9F N9 - F9 Set as input, connect to GND trigger send message
0 PD4 0N - 0F N0 - F0 Set as input, connect to GND trigger send message
A PA1 AN - AF NA - FA
B PA2 BN - BF NB - FB
C PA3 CN - CF NC - FC
  1. When Bluetooth made connection, BT status LED will keep constant high, you can not write it low, notice. But you can read the BT status via this pin.

Serial Debuging

  • To receive MCU Debug Info, so USB-TTL <> MCU
  • Use USB-TTL Debug tool, for example PL2303 TX (Green Color), RX (White Color)
  • TX/G to right top pin, RX/W to right top second pin
  • To receive phone bluetooth end message, vice verse connection.

Debug Note

  • Do not connect serial cable when send commands remote from phone, will block message.
  • Some module baudrate is 9600, 115200, 38400.

Code Update

  • V1.12 get here File:BLKIOV1.1.hex.zip
  • V1.12 fixed button delay bug
  • V1.1 Custom Support PD2 PD4 as input, send message to bluetooth phone

Schematic

On Board Bluetooth Module ED-30

  • to change name -> AT+NAME<Param>
  • to change pin -> AT+PIN<Param>
  • to change baudrate -> AT+BAUD<Param>; <Param> from 1~C, 1: 1200, C: 1382400, 4: 9600, 8: 115200, 6: 38400