Compile XSPN input and ref data in flash memory.

Comparison of first 15 samples passed.

raven_spn/src/raven_spn.cpp

@@ -7,11 +7,17 @@
 #include <cstdio>
 #include <cstdint>
 #include <array>
+#include <cmath>
 
 using spn =spn_regs<0x90000000>;
 
 #define IOF_ENABLE_TERMINAL (0x30000)
 
+// huge arrays of XSPN input and referance data
+extern std::array<uint8_t, 50000> input_data;
+extern std::array<double, 10000> ref_data;
+constexpr auto ln2 = std::log(2);
+
 
 typedef void (*function_ptr_t) (void);
 //! Instance data for the PLIC.
@@ -92,18 +98,8 @@ int main() {
 
     // write input samples into the memory
     int * mem_base = (int *) 0x80001000;
-    std::array<uint8_t, 64> input_data = {
-    		0, 0, 0, 1, 0,
-			0, 1, 5, 2, 0,
-    		0, 0, 8, 0, 0,
-    		0, 0, 5, 4, 0,
-    		0, 0, 0, 1, 0,
-    		0, 0, 0, 1, 0,
-    		0, 0, 0, 1, 0,
-    		0, 0, 0, 1, 0
-    };
 
-    for(size_t i = 0, j = 0; j < 16; i += 4, j++) {
+    for(size_t i = 0, j = 0; j < 19; i += 4, j++) {
     	*(mem_base+j) = input_data.at(i);
     	*(mem_base+j) |= input_data.at(i+1) << 8;
     	*(mem_base+j) |= input_data.at(i+2) << 16;
@@ -118,11 +114,11 @@ int main() {
 
     printf("Start SPN HW accelerator\n");
     spn::mode_reg() = 0;
-    spn::input_length_reg() = 8;
+    spn::input_length_reg() = 15;
     spn::input_addr_reg() = 0x80001000;
     spn::output_addr_reg() = 0x80001000;
-    spn::num_of_in_beats_reg() = 1;
-    spn::num_of_out_beats_reg() = 1;
+    spn::num_of_in_beats_reg() = 2;
+    spn::num_of_out_beats_reg() = 2;
     spn::start_reg() = 1;
 
     delayUS(50);
@@ -133,14 +129,13 @@ int main() {
     // read calculation results from the memory
     double * res_base = (double*)mem_base;
 
-    if (double_equals(res_base[0], -3.5530456851)) {
-        printf("XSPN reference value comparison PASSED\n");
-    } else {
-        printf("XSPN reference value comparison FAILED\n");
-    	return 1;
-    }
+    for (int i = 0; i < 15; i++) {
+        if (double_equals(res_base[i] * ln2, ref_data.at(i))) {
+            printf("XSPN ref %d comparison PASSED\n", i);
+        } else {
+            printf("XSPN ref %d comparison FAILED\n", i);
+        }
+	}
 
-
-    printf("End of execution");
 	return 0;
 }