diff --git a/esphome/components/zephyr/core.cpp b/esphome/components/zephyr/core.cpp
index 3ab29e5adc..a2d185221e 100644
--- a/esphome/components/zephyr/core.cpp
+++ b/esphome/components/zephyr/core.cpp
@@ -1,4 +1,4 @@
-#ifdef USE_ZEPHYR
+#if 1
 
 #include <zephyr/kernel.h>
 #include <zephyr/drivers/watchdog.h>
@@ -11,8 +11,9 @@ const device *wdt = nullptr;
 
 void yield() { ::k_yield(); }
 uint32_t millis() { return k_ticks_to_ms_floor32(k_uptime_ticks()); }
-void delay(uint32_t ms) { ::k_msleep(ms); }
 uint32_t micros() { return k_ticks_to_us_floor32(k_uptime_ticks()); }
+void delayMicroseconds(uint32_t us) { ::k_usleep(us); }
+void delay(uint32_t ms) { ::k_msleep(ms); }
 
 void arch_init() {
   wdt = DEVICE_DT_GET(DT_ALIAS(watchdog0));
@@ -35,6 +36,9 @@ void arch_feed_wdt() {
 }
 
 void arch_restart() { sys_reboot(SYS_REBOOT_COLD); }
+uint32_t arch_get_cpu_cycle_count() { return k_cycle_get_32(); }
+uint32_t arch_get_cpu_freq_hz() { return sys_clock_hw_cycles_per_sec(); }
+uint8_t progmem_read_byte(const uint8_t *addr) { return *addr; }
 
 }  // namespace esphome