tflite_micro_person_detection_init

board/NUCLEO_STM32L496ZG/BSP/Hardware/Src/delay.c

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+#include "delay.h"
+#include "sys.h"	    
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void delay_us(uint32_t time_us) {
+  uint32_t clk = 80;               // CPU 80MHz
+  uint32_t ticks = time_us * clk;  // time is us
+  uint32_t told = SysTick->VAL;
+  uint32_t tnow = told;
+  uint32_t tcnt = 0;
+  for(; tcnt<ticks; tnow=SysTick->VAL)
+  {
+    if(tnow != told) {
+      if(tnow < told) {
+        tcnt += told - tnow;
+      } else { 
+        tcnt += SysTick->LOAD-tnow + told;
+      } told = tnow;
+    }
+  }
+}
+
+void delay_ms(uint32_t time_ms) {
+  uint32_t clk = 80;               // CPU 80MHz
+  uint32_t ticks = time_ms * clk * 1000;  // time is ms
+  uint32_t told = SysTick->VAL;
+  uint32_t tnow = told;
+  uint32_t tcnt = 0;
+  for(; tcnt<ticks; tnow=SysTick->VAL)
+  {
+    if(tnow != told) {
+      if(tnow < told) {
+        tcnt += told - tnow;
+      } else { 
+        tcnt += SysTick->LOAD-tnow + told;
+      } told = tnow;
+    }
+  }
+}
+#ifdef __cplusplus
+}
+#endif
+
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