unable to read identification register of W5300

adityagour · 2020-11-29T06:18:24+09:00

Hi I am interfacing Nucleo-L496 (STM32) with Wiz830MJ. I am having a working experience with WizNM7010 for our older designs. I have connected Wiz830MJ with Nucleo board using jumpers. As a first step I was trying to read IDR just to make sure connectivity is proper. I have downloaded the library files for W5300 from github as per the link from wiznet website. I have also modified wizchip_conf.h as follows: #define WIZCHIP W5300 2.#define WIZCHIP_IO_MODE WIZCHIP_IO_MODE_BUS_DIR #define WIZCHIP_IO_BUS_WIDTH 16 #define WIZCHIP_IO_BASE 0x60000000 I tried uploading my wizchip_conf.h but could not do so. Anyways I have done all “@todo” changes except reg_wizchip_cris_cbfunc, reg_wizchip_cs_cbfunc, reg_wizchip_bus_cbfunc. The issue is that I am unable to read IDR successfully using WIZCHIP_READ (0x600000FE). I also tried wizchip_bus_readdata(0x600000FE). I have doubly checked the jumper settings and also verified the CS & RD signals and one of the address lines using oscilloscope. These screenshots are attached for reference. Kindly help me to proceed further. scope_1800×632 12.9 KB

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