From 01cfbd34fecf11ddbea7e2feb2464f53f8dd9c71 Mon Sep 17 00:00:00 2001
From: Stas <stas@minres.com>
Date: Fri, 4 Dec 2020 12:34:49 +0100
Subject: [PATCH] 1st successful XSPN run. Insert few samples and get one
 result

---
 raven_spn/src/raven_spn.cpp | 52 ++++++++++++++++++++++++++++---------
 1 file changed, 40 insertions(+), 12 deletions(-)

diff --git a/raven_spn/src/raven_spn.cpp b/raven_spn/src/raven_spn.cpp
index 4117cb6..9b4ea08 100644
--- a/raven_spn/src/raven_spn.cpp
+++ b/raven_spn/src/raven_spn.cpp
@@ -84,24 +84,52 @@ void platform_init(){
 int main() {
     platform_init();
 
+    // 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++) {
+    	*(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;
+    	*(mem_base+j) |= input_data.at(i+3) << 24;
+    }
+
+    ////////////////////////////////////////////////
     spn::mode_reg() = 1;
     spn::start_reg() = 1;
-    printf("READOUT reuslt:0x%x\n", spn::readout_reg());
+    printf("READOUT HW:0x%x\n", spn::readout_reg());
     spn::interrupt_reg() = 1;
 
-    spn::input_length_reg() = 5;
-    spn::input_addr_reg() = 0x80000000;
-    spn::output_addr_reg() = 0x80100000;
-    spn::num_of_in_beats_reg() = 5;
-    spn::num_of_out_beats_reg() = 1;
-    spn::mode_reg() = 0;
-
-    uint32_t result_addr = spn::output_addr_reg();
-
-    spn::start_reg() = 1;
     printf("Start SPN HW accelerator\n");
+    spn::mode_reg() = 0;
+    spn::input_length_reg() = 8;
+    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::start_reg() = 1;
+
+    delayUS(50);
+    printf("Cycle count:0x%x\n", spn::start_reg());
+    spn::interrupt_reg() = 1;
+    delayUS(10);
+
+    // read calculation results from the memory
+    int result = *mem_base;
+    printf("HW Result:0x%lx\n", result);
+    result = *(mem_base+1);
+    printf("HW Result:0x%lx\n", result);
 
-    delayUS(100);
 
     printf("End of execution");
 	return 0;