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Merge branch 'master' of git://github.com/mmame/Pinout.xyz into mmame-master

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Phil Howard 2017-12-14 12:01:44 +00:00
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@ -52,90 +52,4 @@ The MDB2Pi is a Raspberry Pi HAT which can serve as a MDB master (VMC), as MDB c
A housing for the MDB2Pi (and the MDB2Pi itself) is available at the Abrantix Web Shop: http://blog.abrantix.com/webshop/product/mdb-to-raspberrypi/. Alternatively, you can download a free 3D model here: http://www.thingiverse.com/thing:2209661
## Configuration
Enable UART and RTC by adding the following lines to /boot/config.txt:
```bash
enable_uart=1
dtoverlay=i2c-rtc,pcf8563
```
disable serial console output:
```bash
sudo nano /boot/cmdline.txt
```
--> remove the "console=..." parameter
## MDB Master and Cashless Device Demo:
Install mono runtime:
```bash
sudo apt-get install mono-runtime
```
Get the Demo code:
```bash
wget https://secure.abrantix.com/downloads/MDBConverter/MDBConverter.zip
unzip MDBConverter.zip
```
How to run the Master Demo:
```bash
cd MDBConverter
mono MDBMasterSimulatorConsole.exe /dev/serial0 115200
```
-> For master operation, please make sure to set the DIP Switch to ON-OFF-OFF-ON-ON
How to run the Cashless Device Demo:
```bash
cd MDBConverter
mono MDBCashlessDeviceSimulatorConsole.exe /dev/serial0 115200
```
-> For slave operation, please make sure to set the DIP Switch to OFF-ON-ON-OFF-OFF
Hint: On newer raspbian releases, the serial port is available as /dev/serial0 - older releases may use dev/ttyAMA0.
## RTC
A PCF8563 I2C chip in conjunction with a SuperCapacitor is used for Real-Time-Clock capability (no battery required). This allows buffering of the time up to 7 days when fully charged (or even more, depending on environment temperature and chip/capacitor variance).
Read the RTC:
```bash
pi@raspberrypi:~ $ sudo hwclock -r
Thu 04 May 2017 06:22:13 UTC -0.310218 seconds
```
Write the RTC:
```bash
pi@raspberrypi:~ $ sudo hwclock -w
```
RTC Troubleshooting:
Check if the chip responds over I2C:
```bash
pi@raspberrypi:~ $ sudo i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- UU -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
```
Check dmesg for RTC
```bash
pi@raspberrypi:~ $ dmesg | grep rtc
[ 2.937443] rtc-pcf8563 1-0051: chip found, driver version 0.4.4
[ 2.943665] rtc-pcf8563 1-0051: rtc core: registered rtc-pcf8563 as rtc0
```
Hint: In case that the SuperCap has fully discharged, the daemon might be unable to talk to the RTC at first startup:
```bash
pi@raspberrypi:~ $ dmesg | grep rtc
[ 2.900119] rtc-pcf8563 1-0051: chip found, driver version 0.4.4
[ 2.900403] rtc-pcf8563 1-0051: pcf8563_write_block_data: err=-5 addr=0e, data=03
[ 2.900428] rtc-pcf8563 1-0051: pcf8563_probe: write error
[ 2.900459] rtc-pcf8563: probe of 1-0051 failed with error -5
```
In this case, please wait a few minutes to let the SuperCap recharge, then restart your pi so the RTC daemon can detect the chip again.
For Configuration and further information, please see http://blog.abrantix.com/webshop/mdb-to-raspberry-pi-configuration/