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(fpga) Add testcase for free running mode.

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Signed-off-by: Joachim Strömbergson <joachim@assured.se>
This commit is contained in:
Joachim Strömbergson 2024-08-15 12:00:32 +02:00
parent 2d0c1b5ab6
commit 5a218773f1
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GPG Key ID: 5DDC7C542422EC8D
1 changed files with 47 additions and 1 deletions
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48
hw/application_fpga/core/timer/tb/tb_timer_core.v
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@ -246,7 +246,7 @@ module tb_timer_core();
if (test1_counted_num_cycles == test1_expected_num_cycles) begin
$display("--- test1: Corrcet number of cycles counted: %0d", test1_counted_num_cycles);
$display("--- test1: Correct number of cycles counted: %0d", test1_counted_num_cycles);
end
else begin
$display("--- test1: Error, expected %0d cycles, counted cycles: %0d",
@ -260,6 +260,51 @@ module tb_timer_core();
endtask // test1
//----------------------------------------------------------------
// test2()
//
// Test that the free running functionality works.
//----------------------------------------------------------------
task test2;
begin : test2
reg [31 : 0] test1_cycle_ctr_start;
reg [31 : 0] test1_counted_num_cycles;
reg [31 : 0] test1_expected_num_cycles;
tc_ctr = tc_ctr + 1;
$display("--- test2: Run timer in free running mode started.");
$display("--- test2: Set prescaler and timer to one, but wait more cycles.");
tb_prescaler_init = 32'h1;
tb_timer_init = 32'h1;
tb_free_running = 1'h1;
tb_start = 1'h1;
test1_cycle_ctr_start = cycle_ctr;
#(CLK_PERIOD);
tb_start = 1'h0;
test1_cycle_ctr_start = cycle_ctr;
#(1337 * CLK_PERIOD);
test1_expected_num_cycles = cycle_ctr - test1_cycle_ctr_start;
if (tb_curr_timer == test1_expected_num_cycles) begin
$display("--- test2: Correct number of cycles counted: %0d", tb_curr_timer);
end
else begin
$display("--- test2: Error, expected %0d cycles, counted cycles: %0d",
test1_expected_num_cycles, tb_curr_timer);
error_ctr = error_ctr + 1;
end
$display("--- test2: Completed.");
$display("");
end
endtask // test2
//----------------------------------------------------------------
// timer_core_test
//
@ -274,6 +319,7 @@ module tb_timer_core();
reset_dut();
test1();
test2();
display_test_result();
$display("");