WIZnet Developer Forum

Problem at this stage "void reg_wizchip_spi_cbfunc"

Hi,

I am using the project from Javakys, which can be found here:
github.com/javakys/W5500_STM32F4_SPI_DMA

I have moved it to use the STM32F2xx MCU and have a small problem as the programm stop at this funktion in the
winzip_conf.c source in line 240

while(!(WIZCHIP.if_mode & WIZCHIP_IO_MODE_SPI));


void reg_wizchip_spi_cbfunc(uint8_t (*spi_rb)(void), void (*spi_wb)(uint8_t wb))
{
   while(!(WIZCHIP.if_mode & _WIZCHIP_IO_MODE_SPI_));

   if(!spi_rb || !spi_wb)
   {
      WIZCHIP.IF.SPI._read_byte   = wizchip_spi_readbyte;
      WIZCHIP.IF.SPI._write_byte  = wizchip_spi_writebyte;
   }
   else
   {
      WIZCHIP.IF.SPI._read_byte   = spi_rb;
      WIZCHIP.IF.SPI._write_byte  = spi_wb;
   }
}

If debugging I am getting for
WIZCHIP.if_mode = 0
WIZCHIP_IO_MODE_SPI_ =512
spi_rb =-1
spi_wb =-1

Any help on that?

Best regards
Christian

Hi,
I think that your problem caused by WIZCHIP_IO_MODE didn’t define WIZCHIP_IO_MODE_SPI.

WIZCHIP_IO_MODE is defined in wizchip_conf.h

#elif (_WIZCHIP_ == 5500)
  #define _WIZCHIP_ID_                 "W5500\0"
  
/**
 * @brief Define interface mode. \n
 * @todo Should select interface mode as chip. 
 *        - @ref \_WIZCHIP_IO_MODE_SPI_ \n
 *          -@ref \_WIZCHIP_IO_MODE_SPI_VDM_ : Valid only in @ref \_WIZCHIP_ == 5500 \n
 *          -@ref \_WIZCHIP_IO_MODE_SPI_FDM_ : Valid only in @ref \_WIZCHIP_ == 5500 \n
 *        - @ref \_WIZCHIP_IO_MODE_BUS_ \n
 *          - @ref \_WIZCHIP_IO_MODE_BUS_DIR_ \n
 *          - @ref \_WIZCHIP_IO_MODE_BUS_INDIR_ \n
 *        - Others will be defined in future. \n\n
 *        ex> <code> #define \_WIZCHIP_IO_MODE_ \_WIZCHIP_IO_MODE_SPI_VDM_ </code>
 *       
 */
   //#define _WIZCHIP_IO_MODE_           _WIZCHIP_IO_MODE_SPI_FDM_
   #define _WIZCHIP_IO_MODE_           _WIZCHIP_IO_MODE_SPI_VDM_
   #include "W5500/w5500.h"
#else 
   #error "Unknown defined _WIZCHIP_. You should define one of 5100, 5200, and 5500 !!!"
#endif

WIZCHIP_IO_MODE should be defined WIZCHIP_IO_MODE_SPI_VDM or WIZCHIP_IO_MODE_FDM.
If you used with javakys code, You should define it WIZCHIP_IO_MODE_VDM.

Thank you.

Dear Midnightcow,

I have checked the wizchip_conf.h file and all was and is still definded as you mention.

 #define _WIZCHIP_IO_MODE_           _WIZCHIP_IO_MODE_SPI_VDM_

Any other think that can cause that problem?

Christian

Hi,
I am so sorry too late.

Did you check to initialize WIZCHIP structure.

I think you have some problem WIZCHIP initialization.

The while loop code can be removed but I think your code is not runnring because while loop should be exited as far as WIZCHIP is initialized.

Thank you.

Dear Midnightcow,

you are right I am having a problem with the WIZCHIP structure, just working on it and
got a update of my compiler and had some new problems that are solved now.

This is how the structure is:

typedef struct __WIZCHIP
{
   uint16_t  if_mode;               ///< host interface mode
   uint8_t   id[6];                 ///< @b WIZCHIP ID such as @b 5100, @b 5200, @b 5500, and so on.
   /**
    * The set of critical section callback func.
    */
   struct _CRIS
   {
      void (*_enter)  (void);       ///< crtical section enter
      void (*_exit) (void);         ///< critial section exit
   }CRIS;
   /**
    *  The set of @ref\_WIZCHIP_ select control callback func.
    */
   struct _CS
   {
      void (*_select)  (void);      ///< @ref \_WIZCHIP_ selected
      void (*_deselect)(void);      ///< @ref \_WIZCHIP_ deselected
   }CS;
   /**
    * The set of interface IO callback func.
    */
   union _IF
   {
      /**
       * For BUS interface IO
       */
      struct
      {
         uint8_t  (*_read_byte)  (uint32_t AddrSel);
         void     (*_write_byte) (uint32_t AddrSel, uint8_t wb);
      }BUS;
      /**
       * For SPI interface IO
       */

      struct
      {
         uint8_t (*_read_byte)   (void);
         void    (*_write_byte)  (uint8_t wb);
//         void    (*_read_burst)  (uint8_t* pBuf, uint16_t len);
//         void    (*_write_burst)  (uint8_t* pBuf, uint16_t len);
      }SPI;
      // To be added
      //
   }IF;
}_WIZCHIP;

And here I am getting in the wizchip_conf.c file this error message: Assigning to non-lvalue WIZCHIP.id = WIZCHIP_ID,

_WIZCHIP WIZCHIP  = // {_WIZCHIP_IO_MODE_,_WIZCHIP_ID_,wizchip_cris_enter,wizchip_cris_exit,wizchip_cs_select,wizchip_cs_deselect,wizchip_bus_readbyte,wizchip_bus_writebyte};
//#if 0
      {
      WIZCHIP.if_mode             = _WIZCHIP_IO_MODE_,
      WIZCHIP.id                  = _WIZCHIP_ID_,
      WIZCHIP.CRIS._enter         = wizchip_cris_enter,
      WIZCHIP.CRIS._exit          = wizchip_cris_exit,
      WIZCHIP.CS._select          = wizchip_cs_select,
      WIZCHIP.CS._deselect        = wizchip_cs_deselect,
      WIZCHIP.IF.BUS._read_byte   = wizchip_bus_readbyte,
      WIZCHIP.IF.BUS._write_byte  = wizchip_bus_writebyte
    //.IF.SPI._read_byte   = wizchip_spi_readbyte,
    //.IF.SPI._write_byte  = wizchip_spi_writebyte
      };
//#endif

Thx for the support

Christian

Problem solved.
I change declaration of the “id” variable (wizchip_conf.h file) from 6 to 7:
uint8_t id[7]; ///< @b WIZCHIP ID such as @b 5100, @b 5200, @b 5500, and so on.

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