rp2040

commit 572d9cc55ca9cce6aa24440c73a72a18d46b9bfe
parent 31b8a0f3c01e559312118174e8e75b00148de40b
Author: Matsuda Kenji <info@mtkn.jp>
Date:   Mon, 26 Feb 2024 17:24:10 +0900

enable interrupt again

Diffstat:
M
ex3/main.s
 | 
18
++++++++----------

1 file changed, 8 insertions(+), 10 deletions(-)
diff --git a/ex3/main.s b/ex3/main.s
@@ -100,16 +100,14 @@ wait_vco:
 	// enable FIFO and set format
 	ldr r0, =(3 << 5 | 1 << 4) // WLEN = 8, FEN = 1
 	str r0, [r3, #0x2c] // UART: UARTLCR_H
-/*
+
 	// enable interrupt
 	ldr r3, ppb_base
 	// enable timer_irq_0
 	ldr r1, =0xe100
 	mov r0, #1
 	str r0, [r3, r1] // M0PLUS: NVIC_ISER
-*/
 
-loop:
 	// setup timer
 	ldr r3, timer_base
 	// enable alarm_0 interrupt
@@ -119,19 +117,19 @@ loop:
 	ldr r0, =0x20000 // 
 	bl set_alarm
 
-wait:
-	ldr r0, [r3, #0x20] // TIMER: ARMED
-	mov r1, #0x1
-	tst r0, r1
-	bne wait
+	// debug
+	ldr r3, clocks_base
+	ldr r0, [r3, #0x54] // CLOCK: CLK_USB_CTRL
+	bl printh
 
-	mov r3, #0
-	ldr r0, [r3, #0x4]
+loop:
+	ldr r0, =0xdeadcafe
 	bl printh
 	mov r0, #'\r'
 	bl putbyte
 	mov r0, #'\n'
 	bl putbyte
+	wfi
 	b loop
 
 // functions