fix project

Src/ultrasonic_analog.c

@@ -6,7 +6,6 @@
 #include "systick.h"
 
 volatile bool g_ultrasonic_measure_done = false;
-extern uint32_t g_capture_value;
 
 void ultrasonic_tx_init(void) {
 
@@ -73,7 +72,9 @@ void ultrasonic_pwm_out_cycles(void) {
     timer_channel_output_state_config(TIMER13, TIMER_CH_0, TIMER_CCX_ENABLE);
 
     timer_enable(US_TX_TIMER);
-    timer_enable(TIMER15);
+
+    // TODO 启动后续回波计时器
+    // timer_enable(TIMER15);
 
 }