NRF5340 with W5500 weird ping behaviour

[Stefano6]

Hello,

I have a problem with my nrf5340 in combination with the w5500. I have everything working but the connection is not stable.

I have nothing in the main.c

void main(void)
{
}

This is my nrf5340dk_nrf5340_cpuapp.overlay file

&spi3 {
	compatible = "nordic,nrf-spim";
	sck-pin = <8>;
	miso-pin = <10>;
	mosi-pin = <9>;
	cs-gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
	status = "okay";
	w5500: w5500@0 {
					compatible = "wiznet,w5500";
					label = "w5500";
					reg = <0>;
					spi-max-frequency = <8000000>;
					int-gpios = <&gpio0 20 GPIO_ACTIVE_LOW>;
	};
};

prj.conf

# Networking config
CONFIG_NETWORKING=y

# w5500 driver config
CONFIG_SPI=y
CONFIG_NET_L2_ETHERNET=y
CONFIG_ETH_W5500=y


# Network address config
CONFIG_NET_CONFIG_SETTINGS=y
CONFIG_NET_CONFIG_NEED_IPV4=y
CONFIG_NET_CONFIG_MY_IPV4_ADDR="192.168.101.52"
CONFIG_NET_CONFIG_PEER_IPV4_ADDR="192.168.101.1"

# choose RTT console
CONFIG_UART_CONSOLE=n
CONFIG_USE_SEGGER_RTT=y
CONFIG_RTT_CONSOLE=y

# General config
CONFIG_LOG=y
CONFIG_LOG_DEFAULT_LEVEL=3
CONFIG_NET_LOG=y

I have a connection and i can ping the address. But the responses takes very long sometimes. And i get a request timed out sometimes. When i ping to google.com or to the host from my computer everything works fine.

I was wondering if anyone has a explanation for this?

thanks in advance

[Håkon Alseth]

Hi,

 

Does the performance change if you for instance disable logging?

I also see that you have setup 8 MHz SPI speed, which can be problematic if you use longer wires to connect to your wiznet ethernet module. Have you tried reducing the SPI speed to see if this helps stability?

 

Kind regards,

Håkon

[Stefano6]

Hello,

Thanks for your reply. The performance does not change when i disable logging. When i reduce the spi-max-frequency it also does not change anything.

Kind regards,

Stefano

[Håkon Alseth]

Hi Stefano,

 

Unfortunately, this is a component that zephyr maintains, and we do not have detailed knowledge about this specific driver, so I would recommend that you ask the zephyr community about this instability:

https://docs.zephyrproject.org/latest/getting_started/index.html#asking-for-help

 

Kind regards,

Håkon