Busy-Wait Delay Routines

This module provides simple loop-based delay routines for those applications requiring a brief wait during execution.

Common API for UC3, XMEGA, and AVR MEGA.

Macros
#define	delay_init(fcpu_hz)
	Initialize the delay driver. More...
#define	delay_ms(delay)   ((delay) ? cpu_delay_ms(delay, F_CPU) : cpu_delay_us(1, F_CPU))
	Delay in milliseconds. More...
#define	delay_s(delay)   ((delay) ? cpu_delay_ms(1000 * delay, F_CPU) : cpu_delay_us(1, F_CPU))
	Delay in seconds. More...
#define	delay_us(delay)   ((delay) ? cpu_delay_us(delay, F_CPU) : cpu_delay_us(1, F_CPU))
	Delay in microseconds. More...

#define delay_init

(

fcpu_hz

)

Initialize the delay driver.

Parameters

fcpu_hz

CPU frequency in Hz

Deprecated:

This function is provided for compatibility with ASF applications that may not have been updated to configure the system clock via the common clock service; e.g. sysclk_init() and a configuration header file are used to configure clocks.

The functions in this module call sysclk_get_cpu_hz() function to obtain the system clock frequency.

Referenced by main().

#define delay_ms

(

delay

)

((delay) ? cpu_delay_ms(delay, F_CPU) : cpu_delay_us(1, F_CPU))

Delay in milliseconds.

Parameters

delay

Delay in milliseconds

Referenced by bmp_eoc_wait(), bmp_get_ut(), COMPILER_PACK_SET(), draw_formatted_data(), extended_delay_ms(), hmc5883l_calibrate(), hmc5883l_selftest(), hx8347a_controller_init_registers(), hx8347a_exit_standby(), hx8347a_reset_display(), ili9341_exit_standby(), ili9341_reset_display(), imu3000_set_state(), ISR(), itg3200_set_state(), kxtf9_init(), kxtf9_set_state(), main(), mxt_init(), prompt_user(), sensor_platform_init(), test_fail_indication(), usr_mcps_data_conf(), vendor_app_alive_req(), and wait_for_switches().

#define delay_s

(

delay

)

((delay) ? cpu_delay_ms(1000 * delay, F_CPU) : cpu_delay_us(1, F_CPU))

Delay in seconds.

Parameters

delay

Delay in seconds

#define delay_us

(

delay

)

((delay) ? cpu_delay_us(delay, F_CPU) : cpu_delay_us(1, F_CPU))

Delay in microseconds.

Parameters

delay

Delay in microseconds

Referenced by app_alert(), dac_calibrate_gain(), dac_calibrate_offset(), PHY_RandomReq(), PhyReset(), qt_hardware_reset(), qt_read_regs(), qt_write_regs(), ssd1306_hard_reset(), ssd1306_write_command(), ssd1306_write_data(), st7565r_hard_reset(), trx_aes_wrrd(), trx_sram_read(), and vbat_init().