Mouse code for the MacroRat
mbed-dev/targets/TARGET_Atmel/TARGET_SAM_CortexM0P/drivers/services/delay/sam0/systick_counter.h@46:b156ef445742, 2017-06-03 (annotated)
- Committer:
- sahilmgandhi
- Date:
- Sat Jun 03 00:22:44 2017 +0000
- Revision:
- 46:b156ef445742
- Parent:
- 18:6a4db94011d3
Final code for internal battlebot competition.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
sahilmgandhi | 18:6a4db94011d3 | 1 | #ifndef CYCLE_COUNTER_H_INCLUDED |
sahilmgandhi | 18:6a4db94011d3 | 2 | #define CYCLE_COUNTER_H_INCLUDED |
sahilmgandhi | 18:6a4db94011d3 | 3 | |
sahilmgandhi | 18:6a4db94011d3 | 4 | #include <compiler.h> |
sahilmgandhi | 18:6a4db94011d3 | 5 | #include <clock.h> |
sahilmgandhi | 18:6a4db94011d3 | 6 | |
sahilmgandhi | 18:6a4db94011d3 | 7 | #ifdef __cplusplus |
sahilmgandhi | 18:6a4db94011d3 | 8 | extern "C" { |
sahilmgandhi | 18:6a4db94011d3 | 9 | #endif |
sahilmgandhi | 18:6a4db94011d3 | 10 | |
sahilmgandhi | 18:6a4db94011d3 | 11 | /** |
sahilmgandhi | 18:6a4db94011d3 | 12 | * \name Convenience functions for busy-wait delay loops |
sahilmgandhi | 18:6a4db94011d3 | 13 | * |
sahilmgandhi | 18:6a4db94011d3 | 14 | * @{ |
sahilmgandhi | 18:6a4db94011d3 | 15 | */ |
sahilmgandhi | 18:6a4db94011d3 | 16 | |
sahilmgandhi | 18:6a4db94011d3 | 17 | /** |
sahilmgandhi | 18:6a4db94011d3 | 18 | * \brief Delay loop to delay n number of cycles |
sahilmgandhi | 18:6a4db94011d3 | 19 | * Delay program execution for at least the specified number of CPU cycles. |
sahilmgandhi | 18:6a4db94011d3 | 20 | * |
sahilmgandhi | 18:6a4db94011d3 | 21 | * \param n Number of cycles to delay |
sahilmgandhi | 18:6a4db94011d3 | 22 | */ |
sahilmgandhi | 18:6a4db94011d3 | 23 | static inline void delay_cycles( |
sahilmgandhi | 18:6a4db94011d3 | 24 | const uint32_t n) |
sahilmgandhi | 18:6a4db94011d3 | 25 | { |
sahilmgandhi | 18:6a4db94011d3 | 26 | if (n > 0) { |
sahilmgandhi | 18:6a4db94011d3 | 27 | SysTick->LOAD = n; |
sahilmgandhi | 18:6a4db94011d3 | 28 | SysTick->VAL = 0; |
sahilmgandhi | 18:6a4db94011d3 | 29 | |
sahilmgandhi | 18:6a4db94011d3 | 30 | while (!(SysTick->CTRL & SysTick_CTRL_COUNTFLAG_Msk)) { |
sahilmgandhi | 18:6a4db94011d3 | 31 | }; |
sahilmgandhi | 18:6a4db94011d3 | 32 | } |
sahilmgandhi | 18:6a4db94011d3 | 33 | } |
sahilmgandhi | 18:6a4db94011d3 | 34 | |
sahilmgandhi | 18:6a4db94011d3 | 35 | void delay_cycles_us(uint32_t n); |
sahilmgandhi | 18:6a4db94011d3 | 36 | |
sahilmgandhi | 18:6a4db94011d3 | 37 | void delay_cycles_ms(uint32_t n); |
sahilmgandhi | 18:6a4db94011d3 | 38 | |
sahilmgandhi | 18:6a4db94011d3 | 39 | /** |
sahilmgandhi | 18:6a4db94011d3 | 40 | * \brief Delay program execution for at least the specified number of microseconds. |
sahilmgandhi | 18:6a4db94011d3 | 41 | * |
sahilmgandhi | 18:6a4db94011d3 | 42 | * \param delay number of microseconds to wait |
sahilmgandhi | 18:6a4db94011d3 | 43 | */ |
sahilmgandhi | 18:6a4db94011d3 | 44 | #define cpu_delay_us(delay) delay_cycles_us(delay) |
sahilmgandhi | 18:6a4db94011d3 | 45 | |
sahilmgandhi | 18:6a4db94011d3 | 46 | /** |
sahilmgandhi | 18:6a4db94011d3 | 47 | * \brief Delay program execution for at least the specified number of milliseconds. |
sahilmgandhi | 18:6a4db94011d3 | 48 | * |
sahilmgandhi | 18:6a4db94011d3 | 49 | * \param delay number of milliseconds to wait |
sahilmgandhi | 18:6a4db94011d3 | 50 | */ |
sahilmgandhi | 18:6a4db94011d3 | 51 | #define cpu_delay_ms(delay) delay_cycles_ms(delay) |
sahilmgandhi | 18:6a4db94011d3 | 52 | |
sahilmgandhi | 18:6a4db94011d3 | 53 | /** |
sahilmgandhi | 18:6a4db94011d3 | 54 | * \brief Delay program execution for at least the specified number of seconds. |
sahilmgandhi | 18:6a4db94011d3 | 55 | * |
sahilmgandhi | 18:6a4db94011d3 | 56 | * \param delay number of seconds to wait |
sahilmgandhi | 18:6a4db94011d3 | 57 | */ |
sahilmgandhi | 18:6a4db94011d3 | 58 | #define cpu_delay_s(delay) delay_cycles_ms(1000 * delay) |
sahilmgandhi | 18:6a4db94011d3 | 59 | |
sahilmgandhi | 18:6a4db94011d3 | 60 | /** |
sahilmgandhi | 18:6a4db94011d3 | 61 | * @} |
sahilmgandhi | 18:6a4db94011d3 | 62 | */ |
sahilmgandhi | 18:6a4db94011d3 | 63 | |
sahilmgandhi | 18:6a4db94011d3 | 64 | #ifdef __cplusplus |
sahilmgandhi | 18:6a4db94011d3 | 65 | } |
sahilmgandhi | 18:6a4db94011d3 | 66 | #endif |
sahilmgandhi | 18:6a4db94011d3 | 67 | |
sahilmgandhi | 18:6a4db94011d3 | 68 | #endif /* CYCLE_COUNTER_H_INCLUDED */ |