初始化奇妙小屏幕控制器项目
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#define _POSIX_C_SOURCE 200809L
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#include "h618_hub75.h"
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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static double monotonic_seconds(void) {
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struct timespec value;
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clock_gettime(CLOCK_MONOTONIC, &value);
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return (double)value.tv_sec + (double)value.tv_nsec / 1000000000.0;
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}
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static int integer_argument(const char *value, const char *name) {
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char *end = NULL;
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long parsed = strtol(value, &end, 10);
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if (value[0] == '\0' || end == NULL || *end != '\0' || parsed < 0 || parsed > 1000000) {
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fprintf(stderr, "invalid %s: %s\n", name, value);
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exit(2);
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}
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return (int)parsed;
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}
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static int hex_nibble(char value) {
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if (value >= '0' && value <= '9') return value - '0';
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if (value >= 'a' && value <= 'f') return value - 'a' + 10;
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if (value >= 'A' && value <= 'F') return value - 'A' + 10;
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return -1;
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}
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static void color_argument(const char *value, uint8_t output[3]) {
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if (strlen(value) != 6) {
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fprintf(stderr, "invalid color: %s (expected RRGGBB)\n", value);
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exit(2);
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}
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for (unsigned channel = 0; channel < 3; ++channel) {
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int high = hex_nibble(value[channel * 2]);
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int low = hex_nibble(value[channel * 2 + 1]);
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if (high < 0 || low < 0) {
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fprintf(stderr, "invalid color: %s (expected RRGGBB)\n", value);
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exit(2);
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}
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output[channel] = (uint8_t)((high << 4) | low);
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}
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}
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int main(int argc, char **argv) {
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int duration = 10;
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int refresh_rate = 100;
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int brightness = 40;
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int use_dev_mem = 0;
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int use_static_color = 0;
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uint8_t static_color[3] = {0};
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for (int index = 1; index < argc; ++index) {
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if (strcmp(argv[index], "--duration") == 0 && index + 1 < argc) {
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duration = integer_argument(argv[++index], "duration");
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} else if (strcmp(argv[index], "--refresh-rate") == 0 && index + 1 < argc) {
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refresh_rate = integer_argument(argv[++index], "refresh rate");
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} else if (strcmp(argv[index], "--brightness") == 0 && index + 1 < argc) {
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brightness = integer_argument(argv[++index], "brightness");
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} else if (strcmp(argv[index], "--dev-mem") == 0) {
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use_dev_mem = 1;
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} else if (strcmp(argv[index], "--color") == 0 && index + 1 < argc) {
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color_argument(argv[++index], static_color);
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use_static_color = 1;
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} else {
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fprintf(stderr, "usage: %s [--duration N] [--refresh-rate N] [--brightness N] [--color RRGGBB] [--dev-mem]\n", argv[0]);
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return 2;
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}
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}
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if (duration < 1) {
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fputs("duration must be at least one second\n", stderr);
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return 2;
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}
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hub75_config config = {
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.brightness = brightness,
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.refresh_rate_hz = refresh_rate,
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.cpu_affinity = 3,
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.realtime_priority = 50,
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.use_dev_mem = use_dev_mem,
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};
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char error[512] = "";
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hub75_context *context = hub75_create(&config, error, sizeof(error));
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if (context == NULL) {
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fprintf(stderr, "create failed: %s\n", error);
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return 1;
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}
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if (hub75_start(context) != 0) {
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fputs("start failed\n", stderr);
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hub75_destroy(context);
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return 1;
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}
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uint8_t frame[HUB75_FRAME_BYTES];
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if (use_static_color) {
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for (unsigned pixel = 0; pixel < HUB75_WIDTH * HUB75_HEIGHT; ++pixel) {
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memcpy(frame + pixel * 3u, static_color, sizeof(static_color));
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}
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if (hub75_submit_rgb(context, frame, sizeof(frame)) != 0) {
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fputs("initial static submit failed\n", stderr);
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hub75_destroy(context);
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return 1;
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}
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}
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double started = monotonic_seconds();
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unsigned submitted = 0;
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while (monotonic_seconds() - started < duration) {
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if (!use_static_color) {
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for (unsigned pixel = 0; pixel < HUB75_WIDTH * HUB75_HEIGHT; ++pixel) {
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frame[pixel * 3] = (uint8_t)(pixel + submitted);
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frame[pixel * 3 + 1] = (uint8_t)(pixel * 3u + submitted);
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frame[pixel * 3 + 2] = (uint8_t)(pixel * 7u + submitted);
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}
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if (hub75_submit_rgb(context, frame, sizeof(frame)) != 0) {
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fputs("submit failed\n", stderr);
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hub75_destroy(context);
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return 1;
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}
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++submitted;
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}
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struct timespec delay = {.tv_sec = 0, .tv_nsec = 20000000};
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nanosleep(&delay, NULL);
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}
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hub75_stats stats;
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if (hub75_get_stats(context, &stats) != 0) {
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fputs("stats failed\n", stderr);
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hub75_destroy(context);
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return 1;
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}
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hub75_destroy(context);
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int expected_scans = hub75_scans_per_frame_for_brightness(brightness);
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double miss_rate = stats.completed_frames == 0 ? 100.0 :
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(double)stats.deadline_misses * 100.0 / (double)stats.completed_frames;
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printf(
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"{\"mode\":\"%s\",\"configured_hz\":%d,\"actual_hz\":%.3f,"
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"\"panel_scan_hz\":%.3f,\"completed_frames\":%llu,"
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"\"completed_scans\":%llu,\"scans_per_frame\":%d,"
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"\"deadline_misses\":%llu,"
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"\"deadline_miss_percent\":%.6f,\"buffer_swaps\":%llu,"
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"\"submitted_frames\":%llu,\"oe_timing_backend\":\"%s\","
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"\"oe_pulse_faults\":%llu,\"oe_forced_blanks\":%llu,"
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"\"max_programmed_oe_ns\":%llu,\"oe_timing_error\":\"%s\","
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"\"cpu_affinity_active\":%s,"
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"\"realtime_priority_active\":%s,\"memory_locked\":%s,"
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"\"governor\":\"%s\",\"affinity_error\":\"%s\","
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"\"realtime_error\":\"%s\",\"memory_lock_error\":\"%s\","
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"\"last_error\":\"%s\"}\n",
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use_dev_mem ? "dev-mem" : "fake-registers",
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refresh_rate,
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stats.actual_refresh_rate_hz,
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stats.panel_scan_rate_hz,
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(unsigned long long)stats.completed_frames,
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(unsigned long long)stats.completed_scans,
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stats.scans_per_frame,
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(unsigned long long)stats.deadline_misses,
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miss_rate,
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(unsigned long long)stats.buffer_swaps,
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(unsigned long long)stats.submitted_frames,
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stats.oe_timing_backend,
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(unsigned long long)stats.oe_pulse_faults,
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(unsigned long long)stats.oe_forced_blanks,
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(unsigned long long)stats.max_programmed_oe_ns,
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stats.oe_timing_error,
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stats.cpu_affinity_active ? "true" : "false",
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stats.realtime_priority_active ? "true" : "false",
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stats.memory_locked ? "true" : "false",
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stats.governor,
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stats.affinity_error,
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stats.realtime_error,
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stats.memory_lock_error,
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stats.last_error
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);
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if (
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stats.completed_frames == 0 ||
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stats.actual_refresh_rate_hz <= 0.0 ||
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stats.panel_scan_rate_hz <= 0.0 ||
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stats.scans_per_frame != expected_scans ||
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stats.completed_scans != stats.completed_frames * (uint64_t)expected_scans ||
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stats.oe_pulse_faults != 0 ||
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strcmp(stats.oe_timing_backend, HUB75_OE_TIMING_BACKEND) != 0
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) return 1;
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return 0;
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}
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