soc: pimc: Add initial testbench

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 35 insertions, 0 deletions

diff --git a/tb/soc/irq/tb_pimc.cpp b/tb/soc/irq/tb_pimc.cpp
new file mode 100644
index 0000000..8dd0186
--- /dev/null
+++ b/tb/soc/irq/tb_pimc.cpp
@@ -0,0 +1,35 @@
+#include <stdlib.h>
+#include <iostream>
+#include <verilated.h>
+#include <verilated_vcd_c.h>
+#include "Vpimc.h"
+#include "Vpimc___024root.h"
+
+#define MAX_SIM_ITER 100
+
+int main(int argc, char** argv, char** env) {
+    Vpimc *pimc = new Vpimc;
+
+    Verilated::traceEverOn(true);
+    VerilatedVcdC *m_trace = new VerilatedVcdC;
+    pimc->trace(m_trace, 5);
+    m_trace->open("waveform.vcd");
+
+    pimc->notify = 1;
+    pimc->irq_in = 0b00000010;  /* Pulse IRQ line high */
+
+    for (int i = 0; i < MAX_SIM_ITER; ++i) {
+        if (i == 5) {
+            pimc->irq_in = 0b00000000;
+        }
+
+        pimc->clk ^= 1;
+        pimc->eval();
+        m_trace->dump(i);
+    }
+
+    m_trace->close();
+    delete pimc;
+    exit(EXIT_SUCCESS);
+}
+