Problems with EPCS controller

[Altera_Forum]

Greetings, 

 I am using SOPC builder to build a system that contains an EPCS controller.  I am running a bare bones program to talk to the EPCS part natively using the functions specified in the epcs_commands.c file.  The first function I call is epcs_read_status_register(). This function in turn calls alt_avalon_spi_command(). My program gets stuck in the  alt_avalon_spi_command() function and does not return.  Specifically here is where it gets stuck:  do  {  status = IORD_ALTERA_AVALON_SPI_STATUS(base);  }  while (((status & ALTERA_AVALON_SPI_STATUS_TRDY_MSK) == 0 || credits == 0) &&  (status & ALTERA_AVALON_SPI_STATUS_RRDY_MSK) == 0);  It never leaves this do/while loop.  If I have an EPCS conrtoller and an EPCS part and am using the correct base address is there any reason that I would be having this problem?  Any and all information helpful.  Thanks.

[Altera_Forum]

Look to the sources of epcs controller... 

I has the same problem too - i solve it when i find in epcs_controller.v file  string where i saw the switch - it menas if you set address where bit 8 is 1 - you can access to epcs chip if bit 8 is 0 you can read only boot rom onchip memory.  If you want to get more details let me know. I can send to you my sources for epcs

[Altera_Forum]

--- Quote Start ---  Look to the sources of epcs controller... I has the same problem too - i solve it when i find in epcs_controller.v file  string where i saw the switch - it menas if you set address where bit 8 is 1 - you can access to epcs chip if bit 8 is 0 you can read only boot rom onchip memory.  If you want to get more details let me know. I can send to you my sources for epcs  --- Quote End ---     Hello!  I have the same problem too. When i use epcs_commands.c ,i found the program stop in do/while loop.  I scanned the sources of epcs_controller.v(My file name is NIOS_CPU_NIOS_EPCS.v). But I am not know how to modify to solve the problem. Could you help me how to solve this problem?  Thank you!