From: Keith Packard <keithp@keithp.com>
Date: Sat, 18 Feb 2023 23:28:08 +0000 (-0800)
Subject: samd21: Use TM v4.0 LEDs to debug samd21 clock bits
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=f4e4af8ae17db271d6f50323f70142054f970c28

samd21: Use TM v4.0 LEDs to debug samd21 clock bits

red on at top of clock routine. green on after XOSC is running.
red off at bottom of clock routine.

Signed-off-by: Keith Packard <keithp@keithp.com>
---

diff --git a/src/samd21/ao_timer.c b/src/samd21/ao_timer.c
index 2b431d38..91d74b12 100644
--- a/src/samd21/ao_timer.c
+++ b/src/samd21/ao_timer.c
@@ -122,6 +122,7 @@ ao_clock_init(void)
 		;
 
 #ifdef AO_XOSC
+	ao_enable_output(&samd21_port_b, 10, 1);
 	/* Enable xosc (external xtal oscillator) */
 	samd21_sysctrl.xosc = ((SAMD21_SYSCTRL_XOSC_STARTUP_8192 << SAMD21_SYSCTRL_XOSC_STARTUP) |
 			       (0 << SAMD21_SYSCTRL_XOSC_AMPGC) |
@@ -135,6 +136,8 @@ ao_clock_init(void)
 	while ((samd21_sysctrl.pclksr & (1 << SAMD21_SYSCTRL_PCLKSR_XOSCRDY)) == 0)
 		;
 
+	ao_enable_output(&samd21_port_b, 11, 1);
+
 	/* program DPLL */
 
 	/* Divide down */
@@ -289,4 +292,6 @@ ao_clock_init(void)
 
 	/* Disable automatic NVM write operations */
 	samd21_nvmctrl.ctrlb |= (1UL << SAMD21_NVMCTRL_CTRLB_MANW);
+
+	ao_gpio_set(&samd21_port_b, 10, 0);
 }