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TARGET_NRF51_MICROBIT/nrf_delay.h@0:e1a608bb55e8, 2016-04-07 (annotated)
- Committer:
- jamesadevine
- Date:
- Thu Apr 07 18:33:58 2016 +0100
- Revision:
- 0:e1a608bb55e8
Added binary version of mbed
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
jamesadevine | 0:e1a608bb55e8 | 1 | #ifndef _NRF_DELAY_H |
jamesadevine | 0:e1a608bb55e8 | 2 | #define _NRF_DELAY_H |
jamesadevine | 0:e1a608bb55e8 | 3 | |
jamesadevine | 0:e1a608bb55e8 | 4 | // #include "nrf.h" |
jamesadevine | 0:e1a608bb55e8 | 5 | |
jamesadevine | 0:e1a608bb55e8 | 6 | /*lint --e{438, 522} "Variable not used" "Function lacks side-effects" */ |
jamesadevine | 0:e1a608bb55e8 | 7 | #if defined ( __CC_ARM ) |
jamesadevine | 0:e1a608bb55e8 | 8 | static __ASM void __INLINE nrf_delay_us(uint32_t volatile number_of_us) |
jamesadevine | 0:e1a608bb55e8 | 9 | { |
jamesadevine | 0:e1a608bb55e8 | 10 | loop |
jamesadevine | 0:e1a608bb55e8 | 11 | SUBS R0, R0, #1 |
jamesadevine | 0:e1a608bb55e8 | 12 | NOP |
jamesadevine | 0:e1a608bb55e8 | 13 | NOP |
jamesadevine | 0:e1a608bb55e8 | 14 | NOP |
jamesadevine | 0:e1a608bb55e8 | 15 | NOP |
jamesadevine | 0:e1a608bb55e8 | 16 | NOP |
jamesadevine | 0:e1a608bb55e8 | 17 | NOP |
jamesadevine | 0:e1a608bb55e8 | 18 | NOP |
jamesadevine | 0:e1a608bb55e8 | 19 | NOP |
jamesadevine | 0:e1a608bb55e8 | 20 | NOP |
jamesadevine | 0:e1a608bb55e8 | 21 | NOP |
jamesadevine | 0:e1a608bb55e8 | 22 | NOP |
jamesadevine | 0:e1a608bb55e8 | 23 | NOP |
jamesadevine | 0:e1a608bb55e8 | 24 | BNE loop |
jamesadevine | 0:e1a608bb55e8 | 25 | BX LR |
jamesadevine | 0:e1a608bb55e8 | 26 | } |
jamesadevine | 0:e1a608bb55e8 | 27 | #elif defined ( __ICCARM__ ) |
jamesadevine | 0:e1a608bb55e8 | 28 | static void __INLINE nrf_delay_us(uint32_t volatile number_of_us) |
jamesadevine | 0:e1a608bb55e8 | 29 | { |
jamesadevine | 0:e1a608bb55e8 | 30 | __ASM ( |
jamesadevine | 0:e1a608bb55e8 | 31 | "loop:\n\t" |
jamesadevine | 0:e1a608bb55e8 | 32 | " SUBS R0, R0, #1\n\t" |
jamesadevine | 0:e1a608bb55e8 | 33 | " NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 34 | " NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 35 | " NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 36 | " NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 37 | " NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 38 | " NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 39 | " NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 40 | " NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 41 | " NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 42 | " NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 43 | " NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 44 | " NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 45 | " BNE loop\n\t"); |
jamesadevine | 0:e1a608bb55e8 | 46 | } |
jamesadevine | 0:e1a608bb55e8 | 47 | #elif defined ( __GNUC__ ) |
jamesadevine | 0:e1a608bb55e8 | 48 | __INLINE static void nrf_delay_us(uint32_t volatile number_of_us) |
jamesadevine | 0:e1a608bb55e8 | 49 | { |
jamesadevine | 0:e1a608bb55e8 | 50 | do |
jamesadevine | 0:e1a608bb55e8 | 51 | { |
jamesadevine | 0:e1a608bb55e8 | 52 | __ASM volatile ( |
jamesadevine | 0:e1a608bb55e8 | 53 | "NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 54 | "NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 55 | "NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 56 | "NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 57 | "NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 58 | "NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 59 | "NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 60 | "NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 61 | "NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 62 | "NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 63 | "NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 64 | "NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 65 | "NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 66 | "NOP\n\t" |
jamesadevine | 0:e1a608bb55e8 | 67 | ); |
jamesadevine | 0:e1a608bb55e8 | 68 | } while (--number_of_us); |
jamesadevine | 0:e1a608bb55e8 | 69 | } |
jamesadevine | 0:e1a608bb55e8 | 70 | #endif |
jamesadevine | 0:e1a608bb55e8 | 71 | |
jamesadevine | 0:e1a608bb55e8 | 72 | void nrf_delay_ms(uint32_t volatile number_of_ms); |
jamesadevine | 0:e1a608bb55e8 | 73 | |
jamesadevine | 0:e1a608bb55e8 | 74 | #endif |