Problem in reading W5300 registers with Spartan6

Question

Hi! I am using W5300 module and initialing it on TCP mode with Spartan6(FPGA). I can open the socket in TCP mode, and I also can establish it. When I send data to it and read the RX_FIFOR, I just cant read the number of data has been received . I create a loop for buffering data, but I can not read them. What is the problem?

becky · Answer

Hello Did you have problem for establish. Could you please let me know how to get establish? image567×557 42.1 KB please check if you follow this flow.

tandis · Answer

Yes, I can get ping and I can also connect to the device properly. But I have problem in reading registers. I can just read RX_FIFOR once and when I read it again there is no data in it, while a packet has been received

tandis · Answer

My main problem is the reading process. I can not read registers after eachother. I can read on register once or two different registers after each other. I do check Sn_RX_RSR value and it shows the right value, but then I can not read RX_FIFOR. I can just read RX_FIFOR0 once without reading other registers before that.

tandis · Answer

Thanks for the reply! I do not use Sn_TX_FIFOR in my code at all. I just write in CR and read the result in Sn_SSR. When initializing, listening and establishing are done , I do the reading process of Sn_RX_FIFOR. I should mention that I also have problem in reading Sn_SSR sequentially

tandis · Answer

I have a seperate code of reading process( a reading function). I use that for reading any register. First I read Sn_SSR for initializing , listening and establishing.Then I go to Sn_RX_FIFOR reading process. I have problem in every step. I can just read just one of the registers not all of them sequentially. .

becky · Answer

image609×612 99.8 KB Sorry I’m confused about Sn_RX_FIFOR and Sn_TX_FIFOR, but the same is true for Sn_RX_FIFOR .

tandis · Answer

Does it mean that I can not read Sn_RX_FIFOR0 and after a delay read Sn_RX_FIFOR1? Should I read them at the same time? Sorry I am confused

tandis · Answer

WiznetReadWrite_Process : process(s_CLK_20M) begin if rising_edge(s_CLK_20M) then case s_Eth_RW_State is when c_Eth_RW_State_Idle => o_Eth_CS <= '1'; o_Eth_WR <= '1'; o_Eth_RD <= '1'; s_W_DATA_In_Des_Rdy <= '0'; s_W_DATA_Out_Des_Done <= '0'; if s_WriteTrig = '1' then s_W_RD_WRB <= '0'; o_Eth_CS <= '0'; s_W_ADDR <= s_W_ADDR_Des; s_W_DATA_Out <= s_W_DATA_Out_Des; s_Eth_RW_State <= c_Eth_RW_State_W1; elsif s_ReadTrig = '1' then s_W_RD_WRB <= '1'; s_W_ADDR <= s_W_ADDR_Des; o_Eth_RD <= '0'; o_Eth_CS <= '0'; s_Eth_RW_State <= c_Eth_RW_State_R1; end if; when c_Eth_RW_State_W1 => o_Eth_WR <= '0'; s_W_DATA_Out_Des_Done <= '1'; s_Eth_RW_State <= c_Eth_RW_State_Idle; when c_Eth_RW_State_R1 => s_W_DATA_In_Des <= s_W_DATA_In; s_W_DATA_In_Des_Rdy <= '1'; s_Eth_RW_State <=c_Eth_RW_State_Idle; when others => s_Eth_RW_State <= c_Eth_RW_State_Idle; end case; end if; end process; This is my reading process And here is a part of main process which I start initializing in TCP mode after setting all socket registers and IP, MAC , PORT , … : when c_Eth_Start_State => s_W_ADDR_Des <= c_WIZNET_START_ADDR(s_Index); s_W_DATA_Out_Des <= c_WIZNET_START_DATA(s_Index); s_WriteTrig <= '1'; if s_Index < c_WIZNET_START_ADDR_LENGTH-1 then s_Eth_Config_State <= c_Eth_Start_State2; else s_Eth_Config_State <= c_Eth_START_State_End; end if; s_Index <= s_Index + 1; when c_Eth_Start_State2 => if s_W_DATA_Out_Des_Done = '1' then s_Eth_Config_State <= c_Eth_START_State; end if; When c_Eth_START_State_End => s_Index<=0; s_Eth_Config_State <= c_Eth_check1_State; when c_Eth_check1_State=> s_W_ADDR_Des <="10"&x"09"; --S0_SSR s_ReadTrig <= '1'; if s_W_DATA_In_Des_Rdy='1' then mode<=s_W_DATA_In_Des; if mode=x"13" then s_Index <=0; s_LEDs<=x"00" & mode ; s_Eth_Config_State <=c_Eth_listen_State; else s_W_ADDR_Des <= c_WIZNET_START_ADDR(3); --CR1 s_W_DATA_Out_Des <= x"10"; --close s_WriteTrig <= '1'; if s_W_DATA_Out_Des_Done = '1' then s_Index <=0; s_Eth_Config_State <=c_Eth_Start_State; end if; end if; end if…

tandis · Answer

Thank you for the idea! I will change s_read_trig to 0 in other states and check the result. I will let you know

adityagour · Answer

Hi If you could interface w5300 with spartan-6 then kindly let me know. Did you interfaced using microblaze or did u used HDL for interfacing.