5.6 OS & Platform

Configure Raspbian for Raspberry Pi 3 to use Digital Logic shield with µFR Reader RS232

Configure Raspbian for Raspberry Pi 3 to use Digital Logic shield with µFR Reader RS232 Preface Digital Logic shield with µFR Reader RS232 The Shield ​is​​ peace​​ of​​ hardware​​ for ​​simplified ​​interconnection ​​between ​​µFR Reader RS232 devices,​ such as the µFR Nano RS232 and µFR Classic CS RS232 reader model, ​​and any ​​Raspberry​ ​Pi ​​version​.  DL​shield ​​uses​ ​pins ​​8 (GPIO14) ​​and ​​10​ ​(GPIO15)​​ of​​ the ​​GPIO ​​header ​​for ​​UART​ ​communication ​​and pins ​​16​ (GPIO23)​ for​​ resetting​​ the ​​µFR Reader. GPIO​ serial ​​port ​​(​mini​-UART)​ is ​​​disabled ​​by ​​default​. It has to be ​​enabled ​for ​​the device’s full functionality. uFCoder ​library ​​version ​​4​.2.7 ​and ​​later ​​support ​​DL​​ Shields ​​on ​​Raspbian​. Caution The RPi’s serial port (and all other GPIO’s) operate at 3.3V power only. Connecting them to a 5V source will damage your RPi. Enable GPIO serial port $sudo rspi-config Change password Enable SSH (Interfacing Option > SSH) Enable Serial port (Interfacing Option > Serial) Disable Serial Console (Interfacing Option > Serial)  Reboot   Test Test Linux configuration $ ls -l /dev/serial* lrwxrwxrwx​ ​1​ ​root​ ​root​ ​5​ ​Nov​ ​21​ ​07:54​ ​/dev/​​serial0​ ​->​ ​ttyS0 lrwxrwxrwx​ ​1​ ​root​ ​root​ ​7​ ​Nov​ ​21​ ​07:54​ ​/dev/serial1​ ​->​ ​ttyAMA0 $ ls - l /dev/ttyS0 crw-rw​----​​1​​root​​dialout​​4,​​64​​Nov​​21​​07:54​​/dev/ttyS0​ $groups pi​adm​​dialout​​​​cdrom​​​sudo​​audio​​video​​plugdev​​games​​users​​input​​netdev​​gpio​​​​i2c​​​spi​...