commit 2e170d8e95021914ef8aebceaac77369be3bcf0c
parent c3565a1440c02ce651b2777620a691f3c45f87ac
Author: Matsuda Kenji <info@mtkn.jp>
Date: Mon, 20 Mar 2023 09:52:23 +0900
check the reset status
Diffstat:
| M | main.s | | | 28 | +++++++++++++++++++++++----- |
1 file changed, 23 insertions(+), 5 deletions(-)
diff --git a/main.s b/main.s
@@ -9,7 +9,7 @@ main:
bl unreset
bl wait_unreset
- // set gpio24 funct as sio
+ // set gpio22 and gpio24 funct as sio
ldr r0, io_bank0_base
mov r1, #5
add r0, r0, #0xb4 // io_bank0_gpio22_ctrl
@@ -23,6 +23,24 @@ main:
lsl r1, r1, #22 // gpio22 and gpio24
str r1, [r0, #0x24]
+ // check which systems are out of reset
+ ldr r0, resets_base
+ ldr r4, [r0, #0] // RESETS_RESET
+ mov r6, #24
+check_reset_loop:
+ mov r5, #1
+ and r5, r4, r5
+ beq out_of_reset
+ bl p1
+ b in_reset
+out_of_reset:
+ bl p0
+in_reset:
+ lsr r4, r4, #1
+ sub r6, r6, #1
+ bne check_reset_loop
+
+
// enable xosc
ldr r0, xosc_base
mov r1, #0xf
@@ -114,18 +132,18 @@ reset_chk:
bx lr
p0:
- // blink led on gpio24
+ // blink led on gpio22
push {lr}
mov r0, #1
- lsl r0, r0, #24
+ lsl r0, r0, #22
bl led_blink
pop {pc}
p1:
- // blink led on gpio22
+ // blink led on gpio24
push {lr}
mov r0, #1
- lsl r0, r0, #22
+ lsl r0, r0, #24
bl led_blink
pop {pc}
