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TARGET_NRF51_MICROBIT/nrf_delay.h
- Committer:
- daitangio
- Date:
- 2017-01-20
- Revision:
- 4:271bc3554c8f
- Parent:
- 0:e1a608bb55e8
File content as of revision 4:271bc3554c8f:
#ifndef _NRF_DELAY_H #define _NRF_DELAY_H // #include "nrf.h" /*lint --e{438, 522} "Variable not used" "Function lacks side-effects" */ #if defined ( __CC_ARM ) static __ASM void __INLINE nrf_delay_us(uint32_t volatile number_of_us) { loop SUBS R0, R0, #1 NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP BNE loop BX LR } #elif defined ( __ICCARM__ ) static void __INLINE nrf_delay_us(uint32_t volatile number_of_us) { __ASM ( "loop:\n\t" " SUBS R0, R0, #1\n\t" " NOP\n\t" " NOP\n\t" " NOP\n\t" " NOP\n\t" " NOP\n\t" " NOP\n\t" " NOP\n\t" " NOP\n\t" " NOP\n\t" " NOP\n\t" " NOP\n\t" " NOP\n\t" " BNE loop\n\t"); } #elif defined ( __GNUC__ ) __INLINE static void nrf_delay_us(uint32_t volatile number_of_us) { do { __ASM volatile ( "NOP\n\t" "NOP\n\t" "NOP\n\t" "NOP\n\t" "NOP\n\t" "NOP\n\t" "NOP\n\t" "NOP\n\t" "NOP\n\t" "NOP\n\t" "NOP\n\t" "NOP\n\t" "NOP\n\t" "NOP\n\t" ); } while (--number_of_us); } #endif void nrf_delay_ms(uint32_t volatile number_of_ms); #endif