wiz 5500 miso dont response via scope

Question

Hello, I started to work on the evaluation board wiz5500WEB and I didn’t found any code that I can use to make it work as it was before I use my software, do you have the example code that the board comes with ? or any information that can help me, for example: when I want to communicate wiz 5500 via spi, there is an echo command that I can use to find out if the spi is working? More over about the pmode pins 1 2 3,If their state is 1 by default (hardware) this can work? Thanks,

Eugeny · Answer

You will find drivers and code, datasheet, explanation of SPI operation and circuit diagram here: http://www.wiznet.io/product-item/w5500/

Eugeny · Answer

Please provide picture of all the SPI communication under consideration.

maor · Answer

clock%20CS948×685 77 KB clock%20miso945×677 76.5 KB clock%20mosi942×600 63.2 KB

maor · Answer

pay attention to the name of the image

Eugeny · Answer

Not sure if these pictures are useful - not possible to understand what are the atual waveforms, and how data signals relate to clock signal.

irina · Answer

Hi~ I don’t understand your waveform… But if you connect MISO line properly, MISO value is confirm like under. ADDH -> MISO : 0x01 ADDL -> MISO : 0x02 OP -> MISO : 0x03 ....... If you don’t it value, W5500 didn’t operate SPI communication.

maor · Answer

hi, i attached new images of scope showing the clock aligned with the miso,mosi & cs mosi%20clock1880×639 91.1 KB miso%20clock1858×585 79.9 KB cs%20clock1719×624 78 KB

maor · Answer

Additionaly, my circuit devients from the recommended electronics scheme. specifically, Pin (22) 1V2O is connected with a 0.1uF capacitor instead of 10nF as suggested Pin (20) TOCAP is connected with a 10uF capacitor instead of 4.7uF as suggested Pins (30&31) XO & XI are both connected (with a crystal) to two 0.1uF capacitors, instead of 18pF Can this affect the operation of the device? (at the moment i have no control over the electronic part of this project) Thanks.

maor · Answer

I am trying to send a basic command which will will write a value to a specific register (GAR (Gateway IP Address Register) [R/W] [0x0001 – 0x0004] [0x00]), and then read this register to check that the write operation was successful. the 4 0xFF are dummy bytes, to do the actual reading uint8_t arr_w = {0x00, 0x01, 0x07, 0x01, 0x02, 0x03, 0x04}; //write command uint8_t arr_r = {0x00, 0x01, 0x03, 0xFF, 0xFF, 0xFF, 0xFF}; //read command

maor · Answer

So you mean that the MISO should responds with non NULL values while i’m in the middle of writing the actuall command? does the device follows the rule of simply counting the bytes that it has received so far ?

maor · Answer

Thank you for your efforts I will update

maor · Answer

hi, after some adjustments I received signals in miso and mosi but the phy link still dont work, any suggestions? Thanks, Capture3210×724 133 KB