XMC™ Forum Discussions

I can seem to find any examples of how to use sleep and wake. I have tried to implement my own using what i have found on the forum and reference guide but I can't seem to get it to wake back up without error. If anyone has any examples a working deep sleep and wake that would be super helpful. Thanks. Show Less

Hi everybody,

I use the uC XMC4500, but I configure 200KHz in Dave at the oscilloscope I read only one fifth, ie 40 KHz. Someone will have an idea? Show Less

Hello everyone,

I would like to know the signal curve that we get.
Please watch attached document. I would also like to know where I can find more information on Timer Mode Settings

Thank you in advance for your answer Show Less

Is it possible to configure the XMC4800 with both EtherCAT and an EBU? There appears to be a conflict. If so, can someone point me to how best to do it? There doesn't appear to be an EBU APP in Dave.
I would like to use a multiplexed bus to communicate with an FPGA.

Thanks! Show Less

Hi,
I have search about this emulating an eeprom using flash memory. What I have found is using this E_EEPROM library via DAVE Apps. Do you have a sample code for this library without using DAVE apps(but rather including only the header files for the library).

Thank you

Regards,
Ilde Show Less

Did you know you can use Arduino libraries to program XMC?
Check out at https://github.com/Infineon/XMC-for-Arduino/wiki Show Less

I use Printf with Semihosting to display Debug messages on the console.
But when I bulit up a Project with NewLib Standart, I get Linker Errors like:
- multiple definition of `_close'
- multiple definition of `_isatty'
- multiple definition of `_lseek'

Wtih NewLib Nano, everything is fine.

I ist possible to switch NewLib from Standart to Nano in an existing Project?
The Project is big and not mine so I dont want to create a new Project.

Regards
Haydar Show Less

Hello,

I want to expand the xmc4500 pins using Mcp23017 and have more ADC using the ADS7828, but when I try to send commands I can not communicate with the xmc via i2c. Do you have any suggestions? I used the guide provided by Infineon.

Thanks Show Less

Hello.. I am using EBU unit in XMC4800. I want to interface it to a external FRAM. I want to use the configuration as 16 bit multiplexed asynchronous access. I am getting all the control signals correctly. But the problem is, in AD[15 : 0] multiplexed bus am getting only data when RD_WR/ is low. But when ADV/ is low I am getting invalid address. I have configured BUSRCONx.PORTW as 01B and BUSCONx.AGEN as 0. Is there any additional register configuration to configure it as multiplexed bus? And one more thing is I have not connected any external memory to microcontroller. I am checking this with the help of XMC4800 Relax Kit. They have provided pin headers so that it can be connected to CRO. Show Less

I'm facing some strange behavior when implementing timer interrupts on the XMC1100 (XMC1100T016X0064)

Using DAVE, I selected a Manchester decoder on Slice 0, and a 1 millisecond timer on slice 1.
All seemed to work ok, until I started investigating some strange behaviour.

First I discovered that the interrupt priority was not behaving as expected.
The Manchester decoder interrupt was executing at lower priority than set. It was interrupted by an low priority interrupt which I found strange.
I checked every configuration register using the debugger and all seemed correct to me. (Slice 0 was set to 0, others to higher values (lower prio))
By pure luck I discovered that setting the priority for Slice 0 to Slice 1 solved the issue.

After digging deeper I found that Slice 0 triggers the interrupt handler/vector for slice 1 (CCU40_1_IRQHandler ; Handler name for SR CCU40_1)
and vice versa Slice 1 triggers interrupt for slice 0 (CCU40_0_IRQHandler ; Handler name for SR CCU40_0)

I was puzzled. How could my application ever have worked? I checked the Errata sheet but I was unable to find any information regarding this behaviour.

Then I discovered DAVE apparently knows about this because it "compensates" by generating the following macros:
#define MANCHESTERCoder_CCU4IRQHandler IRQ_Hdlr_22, which links the Manchester decoding library (Hardcoded to slice 0) to the interrupt handler of Slice 1
and
#define TIMER1_ISR IRQ_Hdlr_21, which links slice 0 interrupt to the slice 1 handler.

Questions:
- Is this a known issue?
- If it is, why isn't it in the Errata sheet?
- If it isn't why is DAVE compensating for this?
- Why are the interrupt priorities not switched for Slice 0 and 1 in the initialization code? Show Less