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spi_engine_execution: Define all wires before use

main
Istvan Csomortani 2020-04-28 12:09:40 +03:00 committed by István Csomortáni
parent 5493274fb7
commit 3a029fc1f0
1 changed files with 27 additions and 13 deletions
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40
library/spi_engine/spi_engine_execution/spi_engine_execution.v
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@ -157,6 +157,8 @@ reg [(DATA_WIDTH-1):0] data_sdi_shift_5 = 'h0;
reg [(DATA_WIDTH-1):0] data_sdi_shift_6 = 'h0;
reg [(DATA_WIDTH-1):0] data_sdi_shift_7 = 'h0;
reg [4:0] trigger_rx_d = 5'b0;
wire [1:0] inst = cmd[13:12];
wire [1:0] inst_d1 = cmd_d1[13:12];
@ -168,6 +170,19 @@ wire exec_chipselect_cmd = exec_cmd && inst == CMD_CHIPSELECT;
wire exec_misc_cmd = exec_cmd && inst == CMD_MISC;
wire exec_sync_cmd = exec_misc_cmd && cmd[8] == MISC_SYNC;
wire trigger_tx;
wire trigger_rx;
wire sleep_counter_compare;
wire cs_sleep_counter_compare;
wire cs_sleep_counter_compare2;
wire io_ready1;
wire io_ready2;
wire trigger_rx_s;
wire last_sdi_bit;
assign cmd_ready = idle;
always @(posedge clk) begin
@ -229,12 +244,12 @@ always @(posedge clk) begin
end
end
wire trigger_tx = trigger == 1'b1 && ntx_rx == 1'b0;
wire trigger_rx = trigger == 1'b1 && ntx_rx == 1'b1;
assign trigger_tx = trigger == 1'b1 && ntx_rx == 1'b0;
assign trigger_rx = trigger == 1'b1 && ntx_rx == 1'b1;
wire sleep_counter_compare = sleep_counter == cmd_d1[7:0] && clk_div_last == 1'b1;
wire cs_sleep_counter_compare = cs_sleep_counter == cmd_d1[9:8] && clk_div_last == 1'b1;
wire cs_sleep_counter_compare2 = cs_sleep_counter2 == {cmd_d1[9:8],1'b1} && clk_div_last == 1'b1;
assign sleep_counter_compare = sleep_counter == cmd_d1[7:0] && clk_div_last == 1'b1;
assign cs_sleep_counter_compare = cs_sleep_counter == cmd_d1[9:8] && clk_div_last == 1'b1;
assign cs_sleep_counter_compare2 = cs_sleep_counter2 == {cmd_d1[9:8],1'b1} && clk_div_last == 1'b1;
always @(posedge clk) begin
if (idle == 1'b1) begin
@ -321,9 +336,9 @@ always @(posedge clk) begin
sdi_data_valid <= 1'b0;
end
wire io_ready1 = (sdi_data_valid == 1'b0 || sdi_data_ready == 1'b1) &&
assign io_ready1 = (sdi_data_valid == 1'b0 || sdi_data_ready == 1'b1) &&
(sdo_enabled == 1'b0 || last_transfer == 1'b1 || sdo_data_valid == 1'b1);
wire io_ready2 = (sdi_enabled == 1'b0 || sdi_data_ready == 1'b1) &&
assign io_ready2 = (sdi_enabled == 1'b0 || sdi_data_ready == 1'b1) &&
(sdo_enabled == 1'b0 || last_transfer == 1'b1 || sdo_data_valid == 1'b1);
always @(posedge clk) begin
@ -390,16 +405,15 @@ assign sdo_int_s = data_sdo_shift[DATA_WIDTH-1];
// be set to 0, to reduce the core clock's speed, this delay will mean that SDI will
// be latched at one of the next consecutive SCLK edge.
reg [4:0] trigger_rx_d = 5'b0;
always @(posedge clk) begin
trigger_rx_d[0] <= trigger_rx;
trigger_rx_d[4:1] <= trigger_rx_d[3:0];
end
wire trigger_rx_s = (SDI_DELAY == 2'b00) ? trigger_rx_d[1] :
(SDI_DELAY == 2'b01) ? trigger_rx_d[2] :
(SDI_DELAY == 2'b10) ? trigger_rx_d[3] :
(SDI_DELAY == 2'b11) ? trigger_rx_d[4] : trigger_rx_d[1];
assign trigger_rx_s = (SDI_DELAY == 2'b00) ? trigger_rx_d[1] :
(SDI_DELAY == 2'b01) ? trigger_rx_d[2] :
(SDI_DELAY == 2'b10) ? trigger_rx_d[3] :
(SDI_DELAY == 2'b11) ? trigger_rx_d[4] : trigger_rx_d[1];
always @(posedge clk) begin
if (inst_d1 == CMD_CHIPSELECT) begin
@ -444,7 +458,7 @@ assign sdi_data = (NUM_OF_SDI == 1) ? data_sdi_shift :
data_sdi_shift_3, data_sdi_shift_2,
data_sdi_shift_1, data_sdi_shift} : data_sdi_shift;
wire last_sdi_bit = (sdi_counter == word_length-1);
assign last_sdi_bit = (sdi_counter == word_length-1);
always @(posedge clk) begin
if (resetn == 1'b0) begin
sdi_counter <= 8'b0;