first commit

main/utils/utils.c

@@ -0,0 +1,37 @@
+#include <ctype.h>
+#include <string.h>
+
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+
+#include "utils.h"
+
+void utils_delay_ms(uint32_t ms)
+{
+    vTaskDelay(pdMS_TO_TICKS(ms));
+}
+
+uint32_t utils_get_tick_ms(void)
+{
+    return (uint32_t)(xTaskGetTickCount() * portTICK_PERIOD_MS);
+}
+
+void utils_trim(char *str)
+{
+    if (!str) return;
+
+    char *start = str;
+    while (*start && isspace((unsigned char)*start)) start++;
+
+    if (*start == '\0') {
+        *str = '\0';
+        return;
+    }
+
+    char *end = start + strlen(start) - 1;
+    while (end > start && isspace((unsigned char)*end)) end--;
+
+    size_t len = end - start + 1;
+    memmove(str, start, len);
+    str[len] = '\0';
+}

main/utils/utils.h

@@ -0,0 +1,11 @@
+#ifndef UTILS_H
+#define UTILS_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+void utils_delay_ms(uint32_t ms);
+uint32_t utils_get_tick_ms(void);
+void utils_trim(char *str);
+
+#endif