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Sansa Clip+: Unset pin B0 correctly in dualboot.S

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24573 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jack Halpin 2010-02-09 22:29:23 +00:00
parent 3e4e67b408
commit 74c48090ac
2 changed files with 9 additions and 9 deletions
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14
rbutil/mkamsboot/dualboot/dualboot.S
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@ -161,7 +161,7 @@ uclcopy:
ldr r0, =GPIOB
mov r1, #(1<<0) @ pin 0
str r1, [r0, #0x400] @ GPIOB(0) = output
str r1, [r0, #4*(1<<0)] @ write 1 to GPIOB(0)
str r1, [r0, #4*(1<<0)] @ write 1 to GPIOB(0) B0 set
mov r1, #500 @ small delay
1: subs r1, r1, #1
@ -176,13 +176,13 @@ uclcopy:
orr r2, r2, r1 @ c3 || A1
@ restore GPIOB_DIR(0)
ldr r0, =GPIOB
mov r1, #0
str r1, [r0, #0x400] @ Restore GPIOB_DIR to 0x00
@ Unset GPIOB(0)
str r1, [r0, #4*(0<<0)] @ write 0 to GPIOB(0)
mov r1, #0
str r1, [r0, #4*(1<<0)] @ write 0 to GPIOB(0) B0 unset
@ restore GPIOB_DIR to 0x00
ldr r0, =GPIOB
str r1, [r0, #0x400] @ Restore GPIOB_DIR to 0x00
cmp r2, #0 @ test input from pins
bne boot_of @ branch directly to OF if either pin high