commit 00047d21cef637a2ada062b3399d49b97ef6316f
parent 47789e12a5a24eae09ee5a0978e09c1a5b7cf386
Author: Matsuda Kenji <info@mtkn.jp>
Date: Mon, 11 Aug 2025 12:53:00 +0900
add interrupt handler
Diffstat:
| M | spi/main.s | | | 35 | +++++++++++++++++++++++++++++++---- |
1 file changed, 31 insertions(+), 4 deletions(-)
diff --git a/spi/main.s b/spi/main.s
@@ -5,6 +5,30 @@
vectors:
.word 0x20040000 // initial SP
.word (reset+1) // entry point
+ .word 0xdeadbeef
+ .word 0xdeadbeef
+
+ .word 0xdeadbeef
+ .word 0xdeadbeef
+ .word 0xdeadbeef
+ .word 0xdeadbeef
+
+ .word 0xdeadbeef
+ .word 0xdeadbeef
+ .word 0xdeadbeef
+ .word 0xdeadbeef
+
+ .word 0xdeadbeef
+ .word 0xdeadbeef
+ .word 0xdeadbeef
+ .word 0xdeadbeef
+
+ .word 0xdeadbeef
+ .word 0xdeadbeef
+ .word 0xdeadbeef
+ .word 0xdeadbeef
+
+ .word (uart_interrupt_handler+1) // UART0_IRQ
.section .text
reset:
@@ -94,12 +118,9 @@ wait_vco:
lsl r5, #8
mov r0, #1
lsl r0, #20
- str r0, [r4, r5]
+ str r0, [r4, r5] // M0PLUS: NVIC_ISER
loop:
- bl getbyte
- #bl putbyte
- bl printh
b loop
// functions
@@ -210,6 +231,12 @@ delay_loop:
pop {r0}
bx lr
+uart_interrupt_handler:
+ push {lr}
+ bl getbyte
+ bl putbyte
+ pop {pc}
+
.align 2
literals:
.ltorg
