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@ -41,7 +41,7 @@ i2c:
-->
#MDB2Pi HAT
The MDB2Pi HAT can serve as an MDB master or as a peripheral MDB Device for Vending Machines (VMC). It takes care of the MDB specific 9-bit format, electrical and timing constraints. It forwards the MDB payload to the Raspberry Pi UART using a simple serial protocol.
The MDB2Pi HAT can serve as a MDB master or as a peripheral MDB Device for Vending Machines (VMC). It takes care of the MDB specific 9-bit format, electrical and timing constraints. It forwards the MDB payload to the Raspberry Pi UART using a simple serial protocol.
The MDB2Pi HAT is powered from the MDB bus (10...42V regulated or unregulated supply) and backpowers the Raspberry Pi with up to 2.5A@5V. Thus no separate power supply is required for the pi.
##Configuration
@ -51,13 +51,14 @@ enable_uart=1
dtparam=i2c_vc=on
```
2. disable serial console output by editing :
2. disable serial console output:
```bash
sudo nano /boot/cmdline.txt
```
--> remove the "console=..." parameter
##MDB Master and Cashless Device Demo:
Prerequisites:
1. Install mono runtime:
```bash
sudo apt-get install mono-runtime