XMC™ Forum Discussions

Hello,

In our company we use many cards with an Infineon processor, XMC4500.

When we communicate with them in TCP communication

we encounter the same problem that repeats itself on all cards.

General description of the system:

Each system has several cards with an XMC4500 processor,

Once a second we send a command (via TCP) to all cards and wait for a reply.

The system is supposed to be ON 24/7, what happens today is that after a few days (2, 3 days on average) the communication with the card stops and only a reset to the card restores it to activity.

When the communication stops - what happens is that you can't send requests to the specific port, but when you send a ping request it works.

The processor continues to run, the TCP communication stops.

The ETH_LWIP app is set up the same as in your examples.

Do you have any idea what causes this problem and how to solve it?

this is very important to us.

Thank you

Yehudit

Hi, I am working on phase shifted PWMs in XMC4400. By reading the app note below, I have a doubt on PWM generation for PSFB. In Figure 25, two phase shifted pwms are generated. However, in Figure 26, four pwms (two complementary pair) are needed. How do you get the complementary pair (Q21, Q22) for the slave CC81?

https://www.infineon.com/dgdl/Infineon-XMC4000_XMC1000_%20Introduction_to_Digital_Power_Conversion-AN-v01_00-EN.pdf?fileId=5546d4624b0b249c014b497c0c33089e

Do you have any other ways to generate 120-degree phase-shifted pwms, 6 pwms in total (3 complementary pairs) for 3 half bridges?

Thanks.

1. Please ask the attached picture demo code with those demo development board adaption, and motor.

2. bldc_scalar_hall_xmc44

3.XMC4800

smartconx_target@Q!w2e3r4t5y6u7i8o9p0||/t5/XMC/demo%E4%BB%A3%E7%A0%81%E4%B8%8Edemo%E6%9D%BF%E5%AD%90%E9%80%82%E9%85%8D/td-p/735245

Hi,

I'm looking for an complete example for using an external memory  (CY15B104QSN) with DSPI in modusToolbox.

My test board is the KIT_XMC72_EVK XMC7200 evaluation kit.
I did find a lot of code snippets, but none of them are complete using the device configurator and the QSPI configurator and finally having all steps from the initialisation till reading and writing from/to the device.

The board connector is J21 which I use.

Support is highly aprechiated.

BR

Martin

Hello,

in the generated code XMC4200-F64K256 BA #, APP UART_RS485 is defined as below

/*USIC channel configuration*/
const XMC_UART_CH_CONFIG_t UART_RS485_channel_config =
{
  .baudrate      = 9600U,
  .data_bits     = 8U,
  .frame_length  = 8U,
  .stop_bits     = 1U,
  .oversampling  = 16U,
  .parity_mode   = XMC_USIC_CH_PARITY_MODE_NONE
};
/*Transmit pin configuration*/
const XMC_GPIO_CONFIG_t UART_RS485_tx_pin_config   = 
{ 
  .mode             = XMC_GPIO_MODE_OUTPUT_PUSH_PULL_ALT2, 
  .output_level     = XMC_GPIO_OUTPUT_LEVEL_HIGH,
  .output_strength  = XMC_GPIO_OUTPUT_STRENGTH_STRONG_SOFT_EDGE
};

/*Transmit pin configuration used for initializing*/
const UART_TX_CONFIG_t UART_RS485_tx_pin = 
{
  .port = (XMC_GPIO_PORT_t *)PORT2_BASE,
  .config = &UART_RS485_tx_pin_config,
  .pin = 14U
};

/*UART APP configuration structure*/
const UART_CONFIG_t UART_RS485_config = 
{
  .channel_config   = &UART_RS485_channel_config,


  .fptr_uart_config = UART_RS485_init,
  .rx_cbhandler = SysBus_Callback_EndofRX,  
  .sync_error_cbhandler = NULL,  
  .rx_noise_error_cbhandler = NULL,  
  .format_error_bit0_cbhandler = NULL,  
  .format_error_bit1_cbhandler = NULL,  
  .collision_error_cbhandler = NULL,
  .tx_pin_config    = &UART_RS485_tx_pin,
  .mode             = UART_MODE_FULLDUPLEX,
  .transmit_mode = UART_TRANSFER_MODE_DIRECT,
  .receive_mode = UART_TRANSFER_MODE_INTERRUPT,
  .tx_fifo_size     = XMC_USIC_CH_FIFO_SIZE_32WORDS,
  .rx_fifo_size     = XMC_USIC_CH_FIFO_SIZE_32WORDS,
};

/*Runtime handler*/
UART_RUNTIME_t UART_RS485_runtime = 
{
  .tx_busy = false,  
  .rx_busy = false,
};

/*APP handle structure*/
UART_t UART_RS485 = 
{
  .channel = XMC_UART1_CH0,
  .config  = &UART_RS485_config,
  .runtime = &UART_RS485_runtime
};

In another .C file wrote by myself. I want to change baud rate under some condition:

void ChangeBaudRate(uint8_t *Data)
{
	uint32_t ReqBaudRate;
	uint32_t CurrBaudRate;

	/* UART_RS485 is defined in uart_conf.c */
	extern UART_t UART_RS485;
	CurrBaudRate = UART_RS485.config->channel_config->baudrate;

	if(Data[1] == 0x00)
	{
		ReqBaudRate = 9600U;
	}
	else
	{
		ReqBaudRate = 19200U;
	}
	
	if(ReqBaudRate != CurrBaudRate)
	{
		XMC_UART_CH_SetBaudrate(UART_RS485.channel, ReqBaudRate, 16U);
	}
}

It is possible to change baud rate from 9600 to 19200. But if I send another Data to change the ReqBaudRate to 9600, the baud rate cannot change from 19200 to 9600.

If I remove condition 

if(ReqBaudRate != CurrBaudRate)

Then baud rate can be changed back to 9600.

So I think the root cause is that CurrBaudRate is not updated to 19200.

I want to ask, is it right to get current baud rate like 

CurrBaudRate = UART_RS485.config->channel_config->baudrate;

Or there is other way to get current baud rate?

Can you please help to check the problem?

Thank you very much!

BR,

Lila