Fault escalation ARCH_EXCEPT with reason 3

[katrindqaws]

i use a bluetooth sample code

it works on DK board correctly but on my custom PCB it is reseting board after this line:

	err = bt_le_adv_start(BT_LE_ADV_CONN, ad, ARRAY_SIZE(ad),sd, ARRAY_SIZE(sd));

the err value is zero and the RTT log is here:

00> E: r0/a1:  0x00000003  r1/a2:  0x0002f6c8  r2/a3:  0x20006748
00> E: r3/a4:  0x*** Booting nRF Connect SDK v2.5.0 ***
00> Starting Bluetooth Peripheral LBS example
00> I: 8 Sectors of 4096 bytes
00> I: alloc wra: 0, fd0
00> I: data wra: 0, 1c
00> I: SoftDevice Controller build revision: 
00> I: c5 93 ba a9 14 4d 8d 05 |.....M..
00> I: 30 4e 9b 92 d7 71 1e e8 |0N...q..
00> I: aa 02 50 3c             |..P<    
00> I: HW Platform: Nordic Semiconductor (0x0002)
00> I: HW Variant: nRF52x (0x0002)
00> I: Firmware: Standard Bluetooth controller (0x00) Version 197.47763 Build 2370639017
00> I: No ID address. App must call settings_load()
00> Bluetooth initialized
00> I: Identity: DF:A5:7E:BD:0C:5D (random)
00> I: HCI: version 5.4 (0x0d) revision 0x1102, manufacturer 0x0059
00> I: LMP: version 5.4 (0x0d) subver 0x1102
00> Reset reason is 4
00> err  is 0
00> ************************E: MPSL ASSERT: 112, 2185
00> E: ***** HARD FAULT *****
00> E:   Fault escalation (see below)
00> E: ARCH_EXCEP*** Booting nRF Connect SDK v2.5.0 ***

my full code is here:

/*
 * Copyright (c) 2018 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 */

#include <zephyr/types.h>
#include <stddef.h>
#include <string.h>
#include <errno.h>
#include <zephyr/sys/printk.h>
#include <zephyr/sys/byteorder.h>
#include <zephyr/kernel.h>
#include <zephyr/drivers/gpio.h>
#include <soc.h>

#include <zephyr/bluetooth/bluetooth.h>
#include <zephyr/bluetooth/hci.h>
#include <zephyr/bluetooth/conn.h>
#include <zephyr/bluetooth/uuid.h>
#include <zephyr/bluetooth/gatt.h>

#include <bluetooth/services/lbs.h>

#include <zephyr/settings/settings.h>

#include <dk_buttons_and_leds.h>
#include <helpers/nrfx_reset_reason.h>
#define DEVICE_NAME             CONFIG_BT_DEVICE_NAME
#define DEVICE_NAME_LEN         (sizeof(DEVICE_NAME) - 1)


#define RUN_STATUS_LED          DK_LED1
#define CON_STATUS_LED          DK_LED2
#define RUN_LED_BLINK_INTERVAL  1000

#define USER_LED                DK_LED3

#define USER_BUTTON             DK_BTN1_MSK

static bool app_button_state;
uint32_t reason;

static const struct bt_data ad[] = {
	BT_DATA_BYTES(BT_DATA_FLAGS, (BT_LE_AD_GENERAL | BT_LE_AD_NO_BREDR)),
	BT_DATA(BT_DATA_NAME_COMPLETE, DEVICE_NAME, DEVICE_NAME_LEN),
};

static const struct bt_data sd[] = {
	BT_DATA_BYTES(BT_DATA_UUID128_ALL, BT_UUID_LBS_VAL),
};

static void connected(struct bt_conn *conn, uint8_t err)
{
	if (err) {
		printk("Connection failed (err %u)\n", err);
		return;
	}

	printk("Connected\n");

	dk_set_led_on(CON_STATUS_LED);
}

static void disconnected(struct bt_conn *conn, uint8_t reason)
{
	printk("Disconnected (reason %u)\n", reason);

	dk_set_led_off(CON_STATUS_LED);
}

#ifdef CONFIG_BT_LBS_SECURITY_ENABLED
static void security_changed(struct bt_conn *conn, bt_security_t level,
			     enum bt_security_err err)
{
	char addr[BT_ADDR_LE_STR_LEN];

	bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));

	if (!err) {
		printk("Security changed: %s level %u\n", addr, level);
	} else {
		printk("Security failed: %s level %u err %d\n", addr, level,
			err);
	}
}
#endif

BT_CONN_CB_DEFINE(conn_callbacks) = {
	.connected        = connected,
	.disconnected     = disconnected,
#ifdef CONFIG_BT_LBS_SECURITY_ENABLED
	.security_changed = security_changed,
#endif
};

#if defined(CONFIG_BT_LBS_SECURITY_ENABLED)
static void auth_passkey_display(struct bt_conn *conn, unsigned int passkey)
{
	char addr[BT_ADDR_LE_STR_LEN];

	bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));

	printk("Passkey for %s: %06u\n", addr, passkey);
}

static void auth_cancel(struct bt_conn *conn)
{
	char addr[BT_ADDR_LE_STR_LEN];

	bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));

	printk("Pairing cancelled: %s\n", addr);
}

static void pairing_complete(struct bt_conn *conn, bool bonded)
{
	char addr[BT_ADDR_LE_STR_LEN];

	bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));

	printk("Pairing completed: %s, bonded: %d\n", addr, bonded);
}

static void pairing_failed(struct bt_conn *conn, enum bt_security_err reason)
{
	char addr[BT_ADDR_LE_STR_LEN];

	bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));

	printk("Pairing failed conn: %s, reason %d\n", addr, reason);
}

static struct bt_conn_auth_cb conn_auth_callbacks = {
	.passkey_display = auth_passkey_display,
	.cancel = auth_cancel,
};

static struct bt_conn_auth_info_cb conn_auth_info_callbacks = {
	.pairing_complete = pairing_complete,
	.pairing_failed = pairing_failed
};
#else
static struct bt_conn_auth_cb conn_auth_callbacks;
static struct bt_conn_auth_info_cb conn_auth_info_callbacks;
#endif

static void app_led_cb(bool led_state)
{
	dk_set_led(USER_LED, led_state);
}

static bool app_button_cb(void)
{
	return app_button_state;
}

static struct bt_lbs_cb lbs_callbacs = {
	.led_cb    = app_led_cb,
	.button_cb = app_button_cb,
};

static void button_changed(uint32_t button_state, uint32_t has_changed)
{
	if (has_changed & USER_BUTTON) {
		uint32_t user_button_state = button_state & USER_BUTTON;

		bt_lbs_send_button_state(user_button_state);
		app_button_state = user_button_state ? true : false;
	}
}

static int init_button(void)
{
	int err;

	err = dk_buttons_init(button_changed);
	if (err) {
		printk("Cannot init buttons (err: %d)\n", err);
	}

	return err;
}

int main(void)
{
	int blink_status = 0;
	int err;

	printk("Starting Bluetooth Peripheral LBS example\n");

	err = dk_leds_init();
	if (err) {
		printk("LEDs init failed (err %d)\n", err);
		return 0;
	}

	err = init_button();
	if (err) {
		printk("Button init failed (err %d)\n", err);
		return 0;
	}

	if (IS_ENABLED(CONFIG_BT_LBS_SECURITY_ENABLED)) {
		err = bt_conn_auth_cb_register(&conn_auth_callbacks);
		if (err) {
			printk("Failed to register authorization callbacks.\n");
			return 0;
		}

		err = bt_conn_auth_info_cb_register(&conn_auth_info_callbacks);
		if (err) {
			printk("Failed to register authorization info callbacks.\n");
			return 0;
		}
	}



	mpsl_clock_hfclk_latency_set(MPSL_CLOCK_HF_LATENCY_BEST);

	err = bt_enable(NULL);
	if (err) {
		printk("Bluetooth init failed (err %d)\n", err);
		return 0;
	}

	printk("Bluetooth initialized\n");

	if (IS_ENABLED(CONFIG_SETTINGS)) {
		settings_load();
	}

	err = bt_lbs_init(&lbs_callbacs);
	if (err) {
		printk("Failed to init LBS (err:%d)\n", err);
		return 0;
	}

	reason = nrfx_reset_reason_get();
	printk("Reset reason is %d\n",reason);

	for(int i=0; i<5; i++){
		dk_set_led(DK_LED1, (++blink_status) % 2);
		k_sleep(K_MSEC(500));
		
	}

	err = bt_le_adv_start(BT_LE_ADV_CONN, ad, ARRAY_SIZE(ad),sd, ARRAY_SIZE(sd));


	printk("err  is %d\n",err);
	printk("************************");

	if (err) {
		printk("Advertising failed to start (err %d)\n", err);
		return 0;
	}

	for(int i=0; i<5; i++){
		dk_set_led(DK_LED2, (++blink_status) % 2);
		k_sleep(K_MSEC(500));
		
	}


	printk("Advertising successfully started\n");

	for (;;) {
		dk_set_led(DK_LED3, (++blink_status) % 2);
		k_sleep(K_MSEC(RUN_LED_BLINK_INTERVAL));
	}
}

what is the problem?

[AMarch]

Two questions:

1. Does your board have a 32Khz crystal?
2. Is the 32Mhz crystal on correctly?

look here

[katrindqaws]

yes 32khz assembled on board

but when i write this code:

    NRF_TIMER1->BITMODE = TIMER_BITMODE_BITMODE_32Bit << TIMER_BITMODE_BITMODE_Pos;
    NRF_TIMER1->TASKS_CLEAR = 1;
    NRF_CLOCK->EVENTS_HFCLKSTARTED = 0;
    NRF_TIMER1->TASKS_START = 1;
    NRF_CLOCK->TASKS_HFCLKSTART = 1;
    while(NRF_CLOCK->EVENTS_HFCLKSTARTED == 0);
    NRF_TIMER1->TASKS_CAPTURE[0] = 1;

    printk("HF Clock has started. Startup time: %d uS\n", NRF_TIMER1->CC[0]);

the code is being stuck in while loop

[AMarch]

Yeah, I detected this by dumbing down the project to a more "bare metal" startup program and noticing the clock not starting. For us, the 32Mhz crystal was put on 90 degrees from pin one (4 pad layout). I imagine looking at the capacitors for the crystal with an oscilloscope will tell you if any oscillations are starting.