Nelson Diaz / Mbed 2 deprecated mbed

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Dependencies:   SDFileSystem TextLCD mbed-rtos mbed wave_player

Dependents:   main

setup.s@0:5d1489eaa51a, 2013-11-11 (annotated)

Committer:
ndiaz6
Date:
Mon Nov 11 18:34:11 2013 +0000
Revision:
0:5d1489eaa51a
Yes;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ndiaz6 0:5d1489eaa51a 1 AREA setup, CODE, READONLY
ndiaz6 0:5d1489eaa51a 2 ;--------------------OVERVIEW------------------------
ndiaz6 0:5d1489eaa51a 3 ; This file contains ARM Assembly language functions to
ndiaz6 0:5d1489eaa51a 4 ; initialize select registers/memory-locations in the
ndiaz6 0:5d1489eaa51a 5 ; LPC1768 to predetermined values. This startup sequence
ndiaz6 0:5d1489eaa51a 6 ; will be used to test the integrity of your program, and
ndiaz6 0:5d1489eaa51a 7 ; IT SHOULD NOT BE ALTERED BY ANY MEANS. Any student
ndiaz6 0:5d1489eaa51a 8 ; attempting to alter this file will be subject to academic
ndiaz6 0:5d1489eaa51a 9 ; dishonesty and any disciplinary actions pertaining
ndiaz6 0:5d1489eaa51a 10 ; thereto.
ndiaz6 0:5d1489eaa51a 11 ;------------------------------------------------------
ndiaz6 0:5d1489eaa51a 12 ; Export function location so that C compiler can find it and link
ndiaz6 0:5d1489eaa51a 13 EXPORT setup_sequence
ndiaz6 0:5d1489eaa51a 14 setup_sequence
ndiaz6 0:5d1489eaa51a 15 ;PUSH LINK REGISTER TO STACK
ndiaz6 0:5d1489eaa51a 16 PUSH {LR}
ndiaz6 0:5d1489eaa51a 17
ndiaz6 0:5d1489eaa51a 18 ;INIT PINSEL0
ndiaz6 0:5d1489eaa51a 19 LDR R0, =0x4002C000 ;LOAD ADDRESS OF PINSEL0 REGISTER
ndiaz6 0:5d1489eaa51a 20 LDR R1, =0x40000000 ;LOAD BITMASK FOR PINSEL0 REGISTER
ndiaz6 0:5d1489eaa51a 21 LDR R2, [R0] ;\
ndiaz6 0:5d1489eaa51a 22 ORR R2, R1 ;- APPLY BITMASK
ndiaz6 0:5d1489eaa51a 23 STR R2, [R0] ;/
ndiaz6 0:5d1489eaa51a 24
ndiaz6 0:5d1489eaa51a 25 ;INIT PINSEL1
ndiaz6 0:5d1489eaa51a 26 LDR R0, =0x4002C004 ;LOAD ADDRESS OF PINSEL1 REGISTER
ndiaz6 0:5d1489eaa51a 27 LDR R1, =0x00054015 ;LOAD BITMASK FOR PINSEL1 REGISTER
ndiaz6 0:5d1489eaa51a 28 LDR R2, [R0] ;\
ndiaz6 0:5d1489eaa51a 29 ORR R2, R1 ;- APPLY BITMASK
ndiaz6 0:5d1489eaa51a 30 STR R2, [R0] ;/
ndiaz6 0:5d1489eaa51a 31
ndiaz6 0:5d1489eaa51a 32 ;INIT PINSEL3
ndiaz6 0:5d1489eaa51a 33 LDR R0, =0x4002C00C ;LOAD ADDRESS OF PINSEL3 REGISTER
ndiaz6 0:5d1489eaa51a 34 LDR R1, =0x00004510 ;LOAD BITMASK FOR PINSEL4 REGISTER
ndiaz6 0:5d1489eaa51a 35 LDR R2, [R0] ;\
ndiaz6 0:5d1489eaa51a 36 ORR R2, R1 ;- APPLY BITMASK
ndiaz6 0:5d1489eaa51a 37 STR R2, [R0] ;/
ndiaz6 0:5d1489eaa51a 38
ndiaz6 0:5d1489eaa51a 39 ;RETURN TO MAIN
ndiaz6 0:5d1489eaa51a 40 POP {LR}
ndiaz6 0:5d1489eaa51a 41 BX LR
ndiaz6 0:5d1489eaa51a 42 END