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|
;/**
; ******************************************************************************
; * @file app_lld_tests_iar_asm.s
; * @brief Common functionalities for RF LLD tests that must be written
; * in assembler for IAR compilator
; ******************************************************************************
; * @attention
; *
; * Copyright (c) 2019 STMicroelectronics.
; * All rights reserved.
; *
; * This software is licensed under terms that can be found in the LICENSE file
; * in the root directory of this software component.
; * If no LICENSE file comes with this software, it is provided AS-IS.
; *
; ******************************************************************************
; */
;
;/**
; * @brief Active polling for a given delay
; * @param microsec the delay in us unit
; *
; * Caution:
; * - This function has been implemented for system clock set to 16MHz. It must
; * be rewiewed (twice more NOP) for 32Mhz config.
; * - This function can be interrupted if used in interruptible part of code.
; * - Be careful with the use of critical section that can interrupt the reel
; * time during input microsec value.
; * - If 0 is given as input
; */
EXPORT us_delay_16m
AREA |.text|, CODE, READONLY
us_delay_16m
loop_16m
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
SUBS R0, R0, #1
BHI loop_16m
BX LR
EXPORT us_delay_32m
AREA |.text|, CODE, READONLY
us_delay_32m
loop_32m
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
nop
SUBS R0, R0, #1
BHI loop_32m
BX LR
END
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