Mouse code for the MacroRat
Diff: mbed-dev/targets/TARGET_NORDIC/TARGET_NRF5/sdk/drivers_nrf/delay/nrf_delay.h
- Revision:
- 18:6a4db94011d3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dev/targets/TARGET_NORDIC/TARGET_NRF5/sdk/drivers_nrf/delay/nrf_delay.h Sun May 14 23:18:57 2017 +0000 @@ -0,0 +1,242 @@ +#ifndef _NRF_DELAY_H +#define _NRF_DELAY_H + +#include "nrf.h" + +/** + * @brief Function for delaying execution for number of microseconds. + * + * @note NRF52 has instruction cache and because of that delay is not precise. + * + * @param number_of_ms + */ +/*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 +#ifdef NRF52 + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP + NOP +#endif + 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" +#ifdef NRF52 + " 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" + " 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" + " 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" + " NOP\n\t" + " NOP\n\t" + " NOP\n\t" +#endif + " BNE.n loop\n\t"); +} + +#elif defined ( _WIN32 ) || defined ( __unix ) || defined( __APPLE__ ) + +__STATIC_INLINE void nrf_delay_us(uint32_t volatile number_of_us); + +#ifndef CUSTOM_NRF_DELAY_US +__STATIC_INLINE void nrf_delay_us(uint32_t volatile number_of_us) +{} +#endif + +#elif defined ( __GNUC__ ) + +static __INLINE void nrf_delay_us(uint32_t volatile number_of_us) __attribute__((always_inline)); +static __INLINE void nrf_delay_us(uint32_t volatile number_of_us) +{ +register uint32_t delay __ASM ("r0") = number_of_us; +__ASM volatile ( +#ifdef NRF51 + ".syntax unified\n" +#endif + "1:\n" + " SUBS %0, %0, #1\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" +#ifdef NRF52 + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" + " NOP\n" +#endif + " BNE 1b\n" +#ifdef NRF51 + ".syntax divided\n" +#endif + : "+r" (delay)); +} +#endif + +void nrf_delay_ms(uint32_t volatile number_of_ms); + +#endif