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#include <stdio.h>
#include "crossbar_generator.h"
static int validate_config(const Crossbar_Config *config) {
printf("validating configs...\n");
if (config == NULL) {
return -1;
}
if (config->rows == 0) {
return -1;
}
if (config->columns == 0) {
return -1;
}
if (config->input_series == NULL) {
return -1;
}
if (config->num_samples == 0) {
return -1;
}
if (config->initial_resistance == NULL) {
return -1;
}
if (config->model_path == NULL) {
return -1;
}
if (config->subcircuit_name == NULL) {
return -1;
}
if (config->load_resistance <= 0.0) {
return -1;
}
if (config->time_step <= 0.0) {
return -1;
}
if (config->stop_time <= 0.0) {
return -1;
}
if (config->print_state_nodes != 0 && config->print_state_nodes != 1) {
return -1;
}
return 0;
}
//thus starts fprintf hell...
static int write_header(FILE *file, const Crossbar_Config *config) {
if (fprintf(file, "* Generating a crossbar with:\n"
"*Rows: %zu\n"
"*Columns: %zu\n",
config->rows, config->columns ) < 0) {
fprintf(stderr, "Failed to write header at crossbar size");
return -1;
}
//include the memristor model
if (fprintf(file, "\n.include \"%s\"\n", config->model_path) < 0) {
fprintf(stderr, "Faile to write header at .include memristor");
return -1;
}
return 0;
}
static int write_input_series(FILE *file, const Crossbar_Config *config) {
fprintf(file, "\n* SPIRES reservoir states\n");
for (size_t row = 0; row < config->rows; row++) {
fprintf(file, "VROW%zu row%zu 0 PWL(", row, row);
for (size_t sample = 0; sample < config->num_samples; sample++) {
double time = sample * config->time_step;
double state = config->input_series[sample * config->rows + row];
//scale neuron states to safe read voltages
double voltage = state * 0.1;
fprintf(file, "%.17g %.17g ", time, voltage);
}
fprintf(file, ")\n");
}
return ferror(file) ? -1 : 0;
}
static int write_memristor_array(FILE *file, const Crossbar_Config *config) {
if (fprintf(file, "\n* Memristor Array\n") < 0) {
fprintf(stderr, "Failed to write memristor array comment label thing");
return -1;
}
for (size_t row = 0; row < config->rows; row++) {
for (size_t column = 0; column < config->columns; column++) {
//initial_resistance here is done wrong, need to fix
if (fprintf(file,
"X%zu%zu row%zu col%zu %s"
" PARAMS: Rinit=%.0f\n", row, column, row, column,
config->subcircuit_name,
config->initial_resistance[row * config->columns + column]) < 0) {
fprintf(stderr, "Failed to write memristor array");
return -1;
}
}
printf("\n");
}
return 0;
}
static int write_column_loads(FILE *file, const Crossbar_Config *config) {
if (fprintf(file, "\n* Column Loads\n") < 0) {
fprintf(stderr, "Failed to write column loads comment label thing");
}
for (size_t column = 0; column < config->columns; column++) {
if (fprintf(file, "RLOAD%zu col%zu 0 %.0f\n", column, column,
config->load_resistance) < 0) {
fprintf(stderr, "Failed to write column loads");
return -1;
}
}
return 0;
}
static int write_simulation(FILE *file, const Crossbar_Config *config) {
if (fprintf(file, "\n* Simulation\n") < 0) {
fprintf(stderr, "Failed to write simulation header");
return -1;
}
if (fprintf(file, ".tran %.17g %.17g uic\n.control\nrun\n",
config->time_step, config->stop_time) < 0) {
fprintf(stderr, "Failed to write simulation command");
return -1;
}
return 0;
}
static int write_save_date(FILE *file, const Crossbar_Config *config) {
fprintf(file, "linearize");
for (int column = 0; column < config->columns; column++) {
if (fprintf(file, " v(col%zu)", column) < 0) {
fprintf(stderr, "Failed to write linearize statements");
return -1;
}
}
fprintf(file, "\nwrdata crossbar_output.dat");
for (int column = 0; column < config->columns; column++) {
fprintf(file, " v(col%zu)", column); //ive given up on error checking
//Im doing too much of it
}
if (fprintf(file, "\n.endc\n.end") < 0) {
fprintf(stderr, "Failed to write end statements");
return -1;
}
return 0;
}
int generate_crossbar(const char *output_filename,
const Crossbar_Config *config) {
if (validate_config(config) < 0) {
fprintf(stderr, "invalid config");
return -1;
}
FILE *file = fopen(output_filename, "w");
if (file == NULL) {
fprintf(stderr, "could not create file");
return -1;
}
if (write_header(file, config) != 0 ||
write_input_series(file, config) != 0 ||
write_memristor_array(file, config) != 0 ||
write_column_loads(file, config) != 0 ||
write_simulation(file, config) != 0 ||
write_save_date(file, config) != 0) {
fclose(file);
return -1;
}
if (fclose(file) != 0) {
fprintf(stderr, "failed to close output file");
return -1;
}
return 0;
}
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