/** * @file delay.h * @brief Delay implementation */ #ifndef _DELAY_H_ #define _DELAY_H_ #include "hal_types.h" #include "stm32.h" #ifdef __cplusplus extern "C" { #endif #if 0 /** * @brief Delay the given number of microseconds. * * @param us Number of microseconds to delay. */ static inline void delay_us(uint32_t us) { us *= STM32_DELAY_US_MULT; /* fudge for function call overhead */ //us--; asm volatile(" mov r0, %[us] \n\t" "1: subs r0, #1 \n\t" " bhi 1b \n\t" : : [us] "r" (us) : "r0"); } #endif static inline void delay_ns100(uint32_t us) { us *= STM32_DELAY_US_MULT; us /= 10; /* fudge for function call overhead */ //us--; asm volatile(" mov r0, %[us] \n\t" "1: subs r0, #1 \n\t" " bhi 1b \n\t" : : [us] "r" (us) : "r0"); } #ifdef __cplusplus } #endif #endif