rp2040

commit 1d0c810e32b025da04410361cd27e58143a7bfd6
parent 2e6bba9e3ddfab249ac2d82abdcd2b56e12965b4
Author: Matsuda Kenji <info@mtkn.jp>
Date:   Sat, 29 Apr 2023 08:44:28 +0900

strengthen drive strengths
It doesn't seem effective

Diffstat:
M
ex2/main.s
 | 
12
+++++++++++-

1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/ex2/main.s b/ex2/main.s
@@ -50,12 +50,22 @@ wait_xosc:
 	ldr r0, =(0x3 << 5 | 0x1)
 	str r0, [r3, #0x3c] // CLOCKS: CLK_SYS_CTRL
 */
+
 	// setup rosc
 	ldr r3, rosc_base
 	ldr r0, =(0xfab << 12 | 0xfa6)
 	str r0, [r3, #0x0] // ROSC: CTRL
 
-	// blink led on gpio25
+	mov r4, #5
+loop1:
+	bl bled0
+	bl bled1
+	sub r4, #1
+	bne loop1
+
+	ldr r0, =(0x9696 << 16 | 7 << 4 | 7)
+	str r0, [r3, #0x4] // ROSC: FREQA
+
 loop:
 	bl bled0
 	bl bled1