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fix: encoding issues, generator explicit default state

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This commit is contained in:
babintsev.lv
2026-07-17 15:21:49 +03:00
parent 4240604f26
commit 04eb927a25
2 changed files with 61 additions and 56 deletions
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109
designs/adc_dac_synchoronizer/tb_sync_top.sv
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@ -3,7 +3,7 @@
module tb_top;
//------------------------------------------------------------
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// Параметры
//------------------------------------------------------------
parameter string ZERO_LEVEL_PARAM = "logic"; // "logic" VS "true"
parameter VERBOSE = 1;
@ -22,14 +22,14 @@ module tb_top;
localparam CLOCK_DEVIATION = 3; // Maximum clock deviation of pulse stats
//------------------------------------------------------------
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD>
// Тактовые сигналы и сброс
//------------------------------------------------------------
logic clk_dac;
logic rst_dac;
logic clk_adc;
logic rst_adc;
//------------------------------------------------------------
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// Управление и конфиг
//------------------------------------------------------------
logic dac_start;
logic [31:0] pulse_width;
@ -38,11 +38,11 @@ module tb_top;
logic [15:0] pulse_num;
logic [31:0] smp_num;
//------------------------------------------------------------
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// Входы
//------------------------------------------------------------
reg out_of_range;
//------------------------------------------------------------
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// Выходы
//------------------------------------------------------------
wire [ADC_DATA_WIDTH*PACK_FACTOR-1:0] m_axis_tdata;
wire m_axis_tvalid;
@ -72,7 +72,7 @@ module tb_top;
.out_of_range(out_of_range)
);
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// Тактовые сигналы
initial begin
clk_adc = 0;
forever #(CLK_ADC_PERIOD/2) clk_adc = ~clk_adc;
@ -82,17 +82,17 @@ module tb_top;
forever #(CLK_DAC_PERIOD/2) clk_dac = ~clk_dac;
end
// === <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ===
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// === Таски для тестирования ===
// Функция модуля
function automatic real fabs(real val);
return (val < 0.0) ? -val : val;
endfunction
`define MIN(x, y) (((x) < (y)) ? (x) : (y))
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> DAC DUT
// Таска сброса DAC DUT
task automatic reset_dut_dac(
input int rst_duration // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
input int rst_duration // сколько тактов держать сброс
);
@(negedge clk_dac);
rst_dac <= 1;
@ -100,9 +100,9 @@ module tb_top;
rst_dac <= 0;
endtask
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ADC DUT
// Таска сброса ADC DUT
task automatic reset_dut_adc(
input int rst_duration // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
input int rst_duration // сколько тактов держать сброс
);
@(negedge clk_adc);
rst_adc <= 1;
@ -110,9 +110,9 @@ module tb_top;
rst_adc <= 0;
endtask
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> DUT
// Таска запуска DUT
task automatic start_dut(
input int start_duration // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
input int start_duration // сколько тактов держать импульс
);
@(negedge clk_dac); // to make signal stable
dac_start <= 1;
@ -120,15 +120,15 @@ module tb_top;
dac_start <= 0;
endtask
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> DUT
// Таска конфигурации DUT
task automatic set_config(
input logic [31:0] w, // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
input logic [31:0] p, // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
input logic [15:0] n, // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
input logic [DAC_DATA_WIDTH-1:0] h, // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
input logic [31:0] sn // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
input logic [31:0] w, // ширина импульса
input logic [31:0] p, // период импульса
input logic [15:0] n, // количество импульсов
input logic [DAC_DATA_WIDTH-1:0] h, // высота импульса
input logic [31:0] sn // число сэмплов
);
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// Задаем конфигурационные регистры
pulse_width <= w;
pulse_period <= p;
pulse_num <= n;
@ -136,7 +136,7 @@ module tb_top;
smp_num <= sn;
endtask
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> DUT
// Основная таска проверки DUT
task automatic run_test_case(
input int pulse_width,
input int pulse_period,
@ -192,7 +192,7 @@ module tb_top;
start_dut(start_hold_time);
begin
@(posedge clk_dac);
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// старт первой синхронизации
sync_start_time = $realtime;
end
join_none
@ -209,28 +209,27 @@ module tb_top;
if (VERBOSE >= 3) begin
$display("[TB] -run_test_case- Found valid pulse response data positive front");
end
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>. <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// Старт цикла. Завершение синхронизации
sync_time_stats.push_back($realtime - sync_start_time);
pulse_start_time = $realtime;
fork
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// Поток будет запущен для ненулевых импульсов и гарантированно завершится как только зафиксирует статистику импульса
// Начало импульса
if (pulse_height != ZERO_LEVEL && pulse_width != 0) begin
if (VERBOSE >= 4) begin
$display("[TB] -run_test_case- Wait until pulse become high");
end
wait(m_axis_tdata != ZERO_LEVEL);
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>. <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// Фактическое начало импульса. Поступление высокого уровня
pulse_update_val_time = $realtime;
pulse_delay_time_stats.push_back(pulse_update_val_time - pulse_start_time);
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>. <20>.<2E>. OTR != 0 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <20><> <20><> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
// Проверим что высота импульса совпала с заданной. Т.к. OTR != 0 влияет на выходные данные сэмплера, то не будем проверять такие случаи.
@(posedge clk_adc);
#1.5; // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// todo fix
// <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><>-<2D><> OTR <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> (<28><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> OTR + MSB), <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <20>.<2E>. <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> OTR <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> tdata
if (m_axis_tdata != (pulse_height >> 2) && !(randomize_out_of_range || out_of_range_val)) begin
#1.5; // Ожидание завершения переходных процессов
// Будем считать что из-за OTR данные изменились (по условию OTR + MSB), проверка пропускается, т.к. сложно понять точное значение OTR в момент обработки данных от tdata
if (m_axis_tdata != (pulse_height >> 2) && (randomize_out_of_range || out_of_range_val)) begin
$display("[ERROR] -run_test_case- Wrong pulse height: %d. Must be: %d", m_axis_tdata, pulse_height >> 2);
$finish;
end
@ -241,14 +240,14 @@ module tb_top;
wait(m_axis_tdata == ZERO_LEVEL);
pulse_width_time_stats.push_back($realtime - pulse_update_val_time);
end
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// Конец импульса
join_none
@(negedge m_axis_tvalid);
if (VERBOSE >= 3) begin
$display("[TB] -run_test_case- Found valid pulse response data negative front");
end
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>. <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// Завершение цикла. Старт синхронизации
pulse_period_time_stats.push_back($realtime - pulse_start_time);
sync_start_time = $realtime;
end
@ -257,7 +256,7 @@ module tb_top;
$display("[TB] -run_test_case- Stop pulse generation");
end
fork // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
fork // Проверка с таймаутом на лишние циклы
@(posedge m_axis_tvalid);
repeat(30) @(posedge clk_adc);
join_any
@ -278,8 +277,7 @@ module tb_top;
end
out_of_range = 0;
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>. <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// todo randomize_out_of_range || out_of_range_val
// Проверка по статистике. Подсчет средних значений
if (pulse_delay_time_stats.size() != pulse_num && pulse_height != ZERO_LEVEL && pulse_width != 0 && !(randomize_out_of_range || out_of_range_val)) begin // Detected with pulse level. Skip if pulse level undetectable
$display("[ERROR] -run_test_case- Size of pulse_delay_time_stats samples not equal to pulse_num: %d VS %d", pulse_delay_time_stats.size(), pulse_num);
$finish;
@ -325,7 +323,7 @@ module tb_top;
$display("[ERROR] -run_test_case- avearge_pulse_delay too big: %0.3f", avearge_pulse_delay);
error_flag = 1;
end
if (fabs(average_pulse_width - pulse_width * CLK_DAC_PERIOD * (pulse_height != ZERO_LEVEL)) > CLOCK_DEVIATION * CLK_ADC_PERIOD && sample_num * CLK_ADC_PERIOD >= pulse_width * CLK_DAC_PERIOD && !(randomize_out_of_range || out_of_range_val)) begin
if (fabs(average_pulse_width - pulse_width * CLK_DAC_PERIOD * (pulse_height != ZERO_LEVEL)) > CLOCK_DEVIATION * CLK_ADC_PERIOD && sample_num * CLK_ADC_PERIOD >= pulse_width * CLK_DAC_PERIOD) begin
$display("[ERROR] -run_test_case- average_pulse_width deviates from choosen pulse_width. Deviation: %0.3f > %0.3f ns", fabs(average_pulse_width - pulse_width * CLK_DAC_PERIOD), CLOCK_DEVIATION * CLK_ADC_PERIOD);
error_flag = 1;
end
@ -345,13 +343,13 @@ module tb_top;
$display("[TB] -run_test_case- Passed checks");
end
endtask
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// Таска
// --- <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>??<3F><><EFBFBD><EFBFBD><EFBFBD>??<3F> ---
// --- ОСНОВНОЙ ПРОЦЕСС ТЕСТИРОВАНИЯ ---
initial begin
$display("[TB] Tests start");
// ??<3F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// Инициализация
dac_start = 0;
pulse_width = 0;
pulse_period = 0;
@ -477,12 +475,12 @@ module tb_top;
.randomize_out_of_range(0)
);
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>. <20>.<2E>. <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> tvalid <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <20> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>. <20><><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> start <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>, <20><><EFBFBD><EFBFBD>
// Ожидание окончания работы генератора. Т.к. конец работы определяется по tvalid сэмплера, а он завершается сильно раньше. Чтобы не пропустить start следующей таски, ждем
wait(dut.generator_inst.enable == 0);
#50;
$display("[TB] Test 2. Edge cases. Sample num == 0. (6/7)");
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <20>.<2E>. run_test_case <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> pulse num <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>. <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>. <20><> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD> sample num = 0
// Запустим в работу вручную, т.к. run_test_case обязательно ждет pulse num циклов. Детекция цикла производится по активности сэплера. Ее не должно быть при sample num = 0
set_config(
.w(10),
.p(125),
@ -504,9 +502,8 @@ module tb_top;
disable wait_sampler_active_proc;
repeat(30) @(posedge clk_adc);
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD>, <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> pulse height <EFBFBD><EFBFBD>-<2D><> OTR=1
// TODO <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> OTR = 1 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>. <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>
// Данный тест должен приводить к тому, что сэмплер будет давать крайние значения вместо заданного pulse height из-за OTR=1
// Дописать авто тест
$display("[TB] Test 2. Edge cases. OTR == 1. (7/7)");
run_test_case(
.pulse_width(10),
@ -538,15 +535,15 @@ module tb_top;
int r_w, r_p, r_n, r_h, r_sn;
bit r_skip, r_otr, r_otr_rand;
// <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
r_p = $urandom_range(50, 150); // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> 5 <EFBFBD><EFBFBD> 50
r_w = $urandom_range(10, r_p); // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
r_n = $urandom_range(1, 10); // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
r_h = $urandom_range(0, 2**(`MIN(ADC_DATA_WIDTH, DAC_DATA_WIDTH))-1); // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
r_sn = $urandom_range(2, 40); // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
r_skip = $urandom_range(0, 1); // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> (0 - <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, 1 - <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>)
r_otr = 0; // Out Of Range <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
r_otr_rand = 0; // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> OTR <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// Генерируем параметры
r_p = $urandom_range(50, 150); // Период от 5 до 50
r_w = $urandom_range(10, r_p); // Ширина не больше периода
r_n = $urandom_range(1, 10); // Количество импульсов
r_h = $urandom_range(0, 2**(`MIN(ADC_DATA_WIDTH, DAC_DATA_WIDTH))-1); // Высота импульса
r_sn = $urandom_range(2, 40); // Число сэмплов
r_skip = $urandom_range(0, 1); // Случайный сброс (0 - сброс, 1 - пропуск)
r_otr = 0; // Out Of Range стартовое значение
r_otr_rand = 0; // Сделать OTR случайным
if (VERBOSE >= 1)
$display("[TB] --- Test #%0d (Config: W=%0d, P=%0d, N=%0d, H=%0d, SN=%0d, SkipReset=%0b) ---",
@ -564,7 +561,7 @@ module tb_top;
.randomize_out_of_range(r_otr_rand)
);
wait(dut.generator_inst.enable == 0); // <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
wait(dut.generator_inst.enable == 0); // Проверка на завершение работы
#50;
end
$display("[TB] Test 3 complete");

8
rtl/generator/src/generator.sv
View File

@ -27,6 +27,14 @@ module generator
logic enable, synced;
initial begin
cnt_pulse_period = '0;
cnt_pulse_num = '0;
enable = 0;
synced = 0;
dac_out = ZERO_LEVEL;
end
always @(posedge clk_dac) begin
if (rst) begin
pulse_height_reg <= ZERO_LEVEL;