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