150 lines
4.8 KiB
C
150 lines
4.8 KiB
C
#include <stdio.h>
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#include "esp32_s3_szp.h"
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#include "app_ui.h"
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#include <esp_system.h>
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#include <math.h>
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#include "ecg_generator.h"
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#include "esp_timer.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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EventGroupHandle_t my_event_group;
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static const char *TAG = "MAIN";
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// ECG定时器相关
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static ecg_generator_t g_ecg_gen;
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static esp_timer_handle_t ecg_timer = NULL;
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static uint32_t ecg_sample_count = 0;
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static uint32_t ecg_last_log_time = 0;
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// ECG定时器回调函数
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static void ecg_timer_callback(void* arg) {
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// 生成ECG样本
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float ecg_voltage = ecg_generator_get_next_sample(&g_ecg_gen);
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// 输出到DAC通道2
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set_channel_voltage(2, ecg_voltage);
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ecg_sample_count++;
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// 每秒输出一次统计信息
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uint32_t now = esp_timer_get_time() / 1000; // 转换为毫秒
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if (now - ecg_last_log_time >= 1000) {
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ESP_LOGI(TAG, "ECG Timer: %u samples in 1s (%.1f Hz)",
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ecg_sample_count, (float)ecg_sample_count);
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ecg_sample_count = 0;
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ecg_last_log_time = now;
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}
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}
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// 函数声明
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void displayMemoryUsage(void);
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void test_ecg_generation(void);
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// ECG测试函数
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void test_ecg_generation(void) {
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ESP_LOGI(TAG, "=== ECG Generation Test ===");
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// 初始化ECG生成器
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ecg_generator_init(&g_ecg_gen, 250.0f); // 250Hz采样率
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// 设置ECG参数
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ecg_generator_set_heart_rate(&g_ecg_gen, 75.0f); // 75次/分
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ecg_generator_set_amplitude(&g_ecg_gen, 5.0f); // 直接设置5mV幅值，内部自动转换
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// 幅值设置说明：
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// ecg_generator_set_amplitude() 现在直接接受mV值
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// 内部自动处理硬件衰减系数转换
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// 例如：set_amplitude(5.0f) → 示波器显示5mV
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ESP_LOGI(TAG, "ECG Parameters:");
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ESP_LOGI(TAG, " Heart Rate: %.1f BPM", g_ecg_gen.heart_rate);
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ESP_LOGI(TAG, " Amplitude: %.1f V", g_ecg_gen.amplitude);
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ESP_LOGI(TAG, " Sample Rate: %.1f Hz", g_ecg_gen.sample_rate);
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// 创建定时器配置
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const esp_timer_create_args_t timer_args = {
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.callback = &ecg_timer_callback,
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.name = "ecg_timer"
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};
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// 创建定时器
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esp_err_t ret = esp_timer_create(&timer_args, &ecg_timer);
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if (ret != ESP_OK) {
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ESP_LOGE(TAG, "Failed to create ECG timer: %s", esp_err_to_name(ret));
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return;
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}
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// 启动ECG生成器
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ecg_generator_start(&g_ecg_gen);
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// 启动定时器 (4ms = 250Hz)
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ret = esp_timer_start_periodic(ecg_timer, 4000); // 4000微秒 = 4ms
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if (ret != ESP_OK) {
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ESP_LOGE(TAG, "Failed to start ECG timer: %s", esp_err_to_name(ret));
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esp_timer_delete(ecg_timer);
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return;
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}
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ESP_LOGI(TAG, "ECG timer started at 250Hz (4ms period)");
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ESP_LOGI(TAG, "ECG generation is now running...");
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}
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// 打印内存使用情况
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void displayMemoryUsage() {
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size_t totalDRAM = heap_caps_get_total_size(MALLOC_CAP_INTERNAL);
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size_t freeDRAM = heap_caps_get_free_size(MALLOC_CAP_INTERNAL);
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size_t usedDRAM = totalDRAM - freeDRAM;
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size_t totalPSRAM = heap_caps_get_total_size(MALLOC_CAP_SPIRAM);
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size_t freePSRAM = heap_caps_get_free_size(MALLOC_CAP_SPIRAM);
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size_t usedPSRAM = totalPSRAM - freePSRAM;
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size_t DRAM_largest_block = heap_caps_get_largest_free_block(MALLOC_CAP_INTERNAL);
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size_t PSRAM_largest_block = heap_caps_get_largest_free_block(MALLOC_CAP_SPIRAM);
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float dramUsagePercentage = (float)usedDRAM / totalDRAM * 100;
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float psramUsagePercentage = (float)usedPSRAM / totalPSRAM * 100;
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ESP_LOGI(TAG, "DRAM Total: %zu bytes, Used: %zu bytes, Free: %zu bytes, DRAM_Largest_block: %zu bytes", totalDRAM, usedDRAM, freeDRAM, DRAM_largest_block);
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ESP_LOGI(TAG, "DRAM Used: %.2f%%", dramUsagePercentage);
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ESP_LOGI(TAG, "PSRAM Total: %zu bytes, Used: %zu bytes, Free: %zu bytes, PSRAM_Largest_block: %zu bytes", totalPSRAM, usedPSRAM, freePSRAM, PSRAM_largest_block);
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ESP_LOGI(TAG, "PSRAM Used: %.2f%%", psramUsagePercentage);
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}
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// 主函数
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void app_main(void)
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{
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ESP_LOGI(TAG, "Starting ECG application...");
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// 硬件初始化
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bsp_i2c_init(); // I2C初始化
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LED_init(); // LED初始化
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init_ad5328(); // DAC初始化
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my_event_group = xEventGroupCreate();
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ESP_LOGI(TAG, "Hardware initialization completed.");
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// 启动ECG生成
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test_ecg_generation();
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// LED状态指示
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ESP_LOGI(TAG, "Starting LED status indicator...");
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int led_count = 0;
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while (true) {
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// LED闪烁指示系统运行
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gpio_set_level(LED_PIN, 1); // LED亮
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vTaskDelay(pdMS_TO_TICKS(1000));
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gpio_set_level(LED_PIN, 0); // LED灭
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vTaskDelay(pdMS_TO_TICKS(1000));
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// 每10次循环显示一次内存使用情况
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if (++led_count % 10 == 0) {
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displayMemoryUsage();
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}
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}
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} |