commit a9b5055936aeb68b5a41cf14fa8e55dd39b56cc1
parent 8309cf345f36a7477b85cc773e212744fec53955
Author: Matsuda Kenji <info@mtkn.jp>
Date: Fri, 10 Mar 2023 15:02:51 +0900
enable clk_peri and reset uart
Diffstat:
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/main.s b/main.s
@@ -1,10 +1,19 @@
.section .text
.global main
main:
+ // enable clk_peri
+ ldr r0, clocks_base
+ add r0, r0, #0x48
+ mov r1, #0x1
+ lsl r1, r1, #11
+ str r1, [r0, #0]
+
// reset gpio
ldr r0, reset_base
- mov r1, #0x1
- lsl r1, r1, #5
+ mov r2, #0x1
+ lsl r1, r2, #5
+ lsl r2, r2, #17
+ add r1, r1, r2
str r1, [r0, #0]
// check if reset is done
@@ -47,6 +56,9 @@ del_loop:
.align 2
+clocks_base:
+ .word 0x40008000
+
reset_base:
.word 0x4000f000
