mirror of https://github.com/ARMmbed/mbed-os.git
75 lines
1.3 KiB
C
75 lines
1.3 KiB
C
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#ifndef _NRF_DELAY_H
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#define _NRF_DELAY_H
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// #include "nrf.h"
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/*lint --e{438, 522} "Variable not used" "Function lacks side-effects" */
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#if defined ( __CC_ARM )
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static __ASM void __INLINE nrf_delay_us(uint32_t volatile number_of_us)
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{
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loop
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SUBS R0, R0, #1
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NOP
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NOP
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NOP
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NOP
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NOP
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NOP
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NOP
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NOP
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NOP
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NOP
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NOP
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NOP
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BNE loop
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BX LR
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}
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#elif defined ( __ICCARM__ )
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static void __INLINE nrf_delay_us(uint32_t volatile number_of_us)
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{
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__ASM (
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"loop:\n\t"
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" SUBS R0, R0, #1\n\t"
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" NOP\n\t"
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" NOP\n\t"
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" NOP\n\t"
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" NOP\n\t"
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" NOP\n\t"
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" NOP\n\t"
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" NOP\n\t"
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" NOP\n\t"
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" NOP\n\t"
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" NOP\n\t"
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" NOP\n\t"
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" NOP\n\t"
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" BNE loop\n\t");
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}
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#elif defined ( __GNUC__ )
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static __INLINE void nrf_delay_us(uint32_t volatile number_of_us)
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{
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do
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{
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__ASM volatile (
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"NOP\n\t"
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"NOP\n\t"
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"NOP\n\t"
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"NOP\n\t"
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"NOP\n\t"
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"NOP\n\t"
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"NOP\n\t"
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"NOP\n\t"
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"NOP\n\t"
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"NOP\n\t"
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"NOP\n\t"
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"NOP\n\t"
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"NOP\n\t"
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"NOP\n\t"
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);
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} while (--number_of_us);
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}
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#endif
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void nrf_delay_ms(uint32_t volatile number_of_ms);
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#endif
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