rp2040

commit 3c5e2a5787bac536f13e2e517d441fc3dee7bb8f
parent ba3564cccf5996505122c740de2fefa2a85dc302
Author: Matsuda Kenji <info@mtkn.jp>
Date:   Fri, 10 Mar 2023 16:19:26 +0900

add test for uart0
something wrong

Diffstat:
M
main.s
 | 
12
++++++++++--

1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/main.s b/main.s
@@ -70,6 +70,12 @@ reset_chk:
 
 	ldr r0, gpio_out
 	mov r3, #0
+
+echo:
+	b uart0_recv
+	b uart0_send
+	b echo
+
 loop:
 	// assert gpio24
 	str r1, [r0, #0]
@@ -91,7 +97,8 @@ del_loop:
 uart0_send:
 	// check if fifo is not full
 	ldr r1, uart0_base
-	add r2, r1, #0x18
+	mov r2, #0x18
+	add r2, r1, r2
 	ldr r2, [r2, #0]
 	mov r3, #32
 	and r2, r3
@@ -107,7 +114,8 @@ uart0_send:
 uart0_recv:
 	// check if fifo is empty
 	ldr r1, uart0_base
-	add r2, r1, #0x18
+	mov r2, #0x18
+	add r2, r1, r2
 	ldr r2, [r2, #0]
 	mov r3, #16
 	and r2, r3