shithub: lwext4

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Add hw_get_us function

--- a/demos/stm32f429_disco/hw_init.c

+++ b/demos/stm32f429_disco/hw_init.c

@@ -175,6 +175,12 @@

     return HAL_GetTick();

 }

+uint64_t hw_get_us(void)

+{

+    return (uint64_t)HAL_GetTick() * 1000 +

+            ((SysTick->LOAD - SysTick->VAL) * 1000) / SysTick->LOAD;

+}

+

 void hw_wait_ms(uint32_t ms)

 {

     volatile uint32_t t = HAL_GetTick();

--- a/demos/stm32f429_disco/hw_init.h

+++ b/demos/stm32f429_disco/hw_init.h

@@ -43,6 +43,7 @@

 void hw_led_green(bool on);

 uint32_t hw_get_ms(void);

+uint64_t hw_get_us(void);

 void hw_wait_ms(uint32_t ms);

 #endif /* HW_INIT_H_ */