gecko-platforms:geckoxsimple:start

Project details

Name: GECKOxsimple
Maintainer andreas.habegger<AT>bfh.ch
Revision: 10.03.2011
Development status: stable
Compatibility: GECKO3 / GECKO4

GECKOxsimple

The GECKOxsimple platform is a small, GECKO size power board. It contains a DC/DC converter to produce the 3.3V and a RS232 UART connection. The UART includes a level converter.

The supply is based on the PT78ST133 from Texas Insturments. This 1.5 Amp Step-Down regulator can handle voltages from 9V to 26V. Datasheet: PT78ST133

The UART has a MAX3232CSE (Datasheet) level converter. The Tx and Rx lines are visualized over 2 LED. They flash up while transmitting data. The CTS and RTS lines are also implemented.

All connections to the GECKOxmain are on GPIO1.

Pin Name Direction GECKO3 GECKO4
GPIO1_40 Tx IN K23 M24
GPIO1_41 Rx OUT K25 M21
GPIO1_44 RTS IN J23 K24
GPIO1_45 CTS OUT J22 L21

To connect the GECKOxsimple with a uartlite-IP, only the Rx and Tx ports are needed. The UCF Lines for GECKO3 could look similar to this:
NET “xps_uartlite_0_RX_pin” LOC = “K23” | IOSTANDARD = LVCMOS33; # GPIO1_40 TxD0 RS232 on GECKO4simple
NET “xps_uartlite_0_TX_pin” LOC = “K25” | IOSTANDARD = LVCMOS33; # GPIO1_41 TxD0 RS232 on GECKO4simple
You may changes the names of the ports corresponding to your system.

The UCF Lines for GECKO4 could look similar to this:
NET “xps_uartlite_0_RX_pin” LOC = “M24” | IOSTANDARD = LVCMOS33; # GPIO1_40 TxD0 RS232 on GECKO4simple
NET “xps_uartlite_0_TX_pin” LOC = “M21” | IOSTANDARD = LVCMOS33; # GPIO1_41 TxD0 RS232 on GECKO4simple

  • gecko-platforms/geckoxsimple/start.txt
  • Last modified: 2020/09/09 14:25
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