XMC4400 Platform2Go
This page summarizes information about the XMC4400 Platform 2Go evaluation board and its implementation for the Arduino IDE. The XMC4400 Platform 2Go evaluation board consists of a XMC4400 microcontroller with a debugger implemented by a XMC4200 microcontroller. The Infineon homepage of the board can be found here. Please note that there exist versions with 5 V and 3.3V. Please be careful which version you have and use with your respective shields. The one described here means the 5 V version as this one is compatible with Arduino shields designed for the 5 V systems. This kit has the XMC4400 device with debugger plus ETHERNET, CAN, ARDUINO, MikroBUS and Shields2Go form factor. Equipped with an ARM® Cortex®-M4 based XMC™ Microcontroller from Infineon Technologies AG, the XMC4400 Platform2Go is designed to evaluate the capabilities of Infineon’s XMC4400 Microcontroller. It can be used with a wide range of development tools including Infineon’s free of charge Eclipse based IDE DAVE.
The pin layout of the XMC4400 Platform 2Go evaluation board (for 5V Shields) for the Arduino IDE is as follows (the original file can be found here):
Please note that Arduino pin number 16 & 22 (SCL & A5) and Arduino pin number 15 & 21 (SDA & A4) are connected with each other on the board itself. Although they are different physical pins of the microcontroller, they are connected with each other on the board to comply with the original Arduino UNO Rev3 pin connections. This influences analog measurements on A4 and A5 if you are using I2C simultaneously. Details of the connection can also be found in the schematics in the user manual of the board here.
The XMC4400 Platform2Go User Manual on
- Page 12 details the 3V3 signals on connectors X1 and X2 (figure 7) including ADC channels
- Page 15 below Figure 9 details analog input specifications
See also another Wiki for notes on XMC4xxx Series Analog pins
A workaround is to set the I2C pins to output open drain via pinMode(<pinNumber>, OUTPUT_OPENDRAIN); and writing a HIGH afterwards via digitalWrite(<pinNumber>, HIGH); to turn it off if you want to use the analog pins (but then I2C cannot be used anymore). Tri-state via pinMode(<pinNumber>, XMC_GPIO_MODE_INPUT_TRISTATE); is also possible, but the open drain method is preferable as explained here for some use cases. These functions are using the pin mode definitions from the XMC Peripheral Library defined here.
You can also cut the connection to the pins physically by cutting the marked blue routes on the back side of the PCB:
- XMC™4400 (ARM® Cortex™-M4)
- ARDUINO Uno compatibility
- Shields2Go connectivity
- Ethernet-enabled communication option
- Additional voltage level shifters
- Available in four different assembly versions: 3.3V Shields (Lite), 5V (Lite)
- CAN connectivity
- Highest integration on Microcontrollers
- Easy to design products
- Highest efficiency
- Reduced system cost
A PDF summarizing the features and layout of the XMC4400 Platform 2Go evaluation board is stored on the Infineon homepage here. The datasheet for the XMC4400 can be found here XMC4400 Datasheet while the respective reference manual is located here XMC4400 Reference Manual.