diff --git a/draft/overlay/mdb2pi-hat.md b/draft/overlay/mdb2pi-hat.md index 7129988..d3fb600 100644 --- a/draft/overlay/mdb2pi-hat.md +++ b/draft/overlay/mdb2pi-hat.md @@ -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/