using spi_nor driver with nrf sdk connect / zephyr - driver not found

[ziv123]

hello Nordic

i am working with nrf52832, ncs 1.7.1

i am trying to work with external flash driver (25lp128)

so my dts looks like this:

...

chosen {
		zephyr,sram = &sram0;
		zephyr,flash = &flash0;
		zephyr,code-partition = &slot0_partition;
		nordic,pm-ext-flash = &flash_25lp128;
	};
	
....

&spi2 {
		status = "okay";
		sck-pin = <5>; // gpio 0 pin 5
		mosi-pin = <4>; // gpio 0 pin 4
		miso-pin = <2>; // gpio 0 pin 2
		compatible = "nordic,nrf-spim";
		cs-gpios = <&gpio0 3 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
		flash_25lp128: flash_25lp128@0 {
			compatible = "issi,is25lp128", "jedec,spi-nor";
			reg = <0>;
			label = "FLASH_25LP128";
			// power_resources = <&flash_on>;
			spi-max-frequency = <133000000>;
			jedec-id = [9d 60 18];
			size = <134217728>;
		};
	};
	&flash0 {
		partitions {
			compatible = "fixed-partitions";
			#address-cells = <1>;
			#size-cells = <1>;

			mbr_partition: partition@0 {
				label = "mbr";
				reg = <0x00000000 0x00001000>;
			};
			boot_partition: partition@1000 {
				label = "mcuboot";
				reg = <0x1000 0xc000>;
			};
			slot0_partition: partition@d000 {
				label = "image-0";
				reg = <0xd000 0x6c800>;
			};
			slot1_partition: partition@79800 {
				label = "image-1";
				reg = <0x79800 0x800>;
			};
			storage_partition: partition@7a000 {
				label = "storage";
				reg = <0x7a000 0x6000>;
			};
		};
	};

my configs are this:

myboard.conf:

# SPI Flash
CONFIG_SPI=y
CONFIG_SPI_NOR=y
CONFIG_SPI_NOR_FLASH_LAYOUT_PAGE_SIZE=4096

# Enable flash operations.
CONFIG_FLASH_MAP=y
CONFIG_FLASH_TESTS=y
CONFIG_FLASH_PAGE_LAYOUT=y
CONFIG_FLASH_25LP128=y

CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048
CONFIG_BT_RX_STACK_SIZE=1024

# CONFIG_MAIN_STACK_SIZE=1024
CONFIG_MPSL_SIGNAL_STACK_SIZE=640

CONFIG_IDLE_STACK_SIZE=128
CONFIG_ISR_STACK_SIZE=1024
# keep CONFIG_HEAP_MEM_POOL_SIZE=16384 because this is needed by usb /nrfx modules
# CONFIG_HEAP_MEM_POOL_SIZE=16384
# CONFIG_HEAP_MEM_POOL_SIZE=10240
# CONFIG_HEAP_MEM_POOL_SIZE=8192
# CONFIG_HEAP_MEM_POOL_SIZE=4096
# CONFIG_HEAP_MEM_POOL_SIZE=3600
# CONFIG_HEAP_MEM_POOL_SIZE=2048
CONFIG_HEAP_MEM_POOL_SIZE=1024

CONFIG_NRFX_SPIM=y
CONFIG_NRFX_SPIM1=y

CONFIG_SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58=y

# CONFIG_SERIAL=n

# Configurations set based on thread analyzer output.
# CONFIG_SDC_RX_STACK_SIZE=324
CONFIG_BT_HCI_TX_STACK_SIZE_WITH_PROMPT=y
CONFIG_BT_HCI_TX_STACK_SIZE=640


# Disable features not needed
# CONFIG_TIMESLICING=n
# CONFIG_MINIMAL_LIBC_MALLOC=n

# Disable Bluetooth features not needed
# CONFIG_BT_DEBUG_NONE=y
# CONFIG_BT_ASSERT=n
# CONFIG_BT_DATA_LEN_UPDATE=n
CONFIG_BT_PHY_UPDATE=n
# CONFIG_BT_GATT_CACHING=n
# CONFIG_BT_GATT_SERVICE_CHANGED=n
# CONFIG_BT_GAP_PERIPHERAL_PREF_PARAMS=n
# CONFIG_BT_SETTINGS_CCC_LAZY_LOADING=y
# CONFIG_BT_HCI_VS_EXT=n


# Disable Bluetooth controller features not needed
CONFIG_BT_CTLR_PRIVACY=n
CONFIG_BT_CTLR_PHY_2M=n
# Reduce Bluetooth buffers
CONFIG_BT_BUF_EVT_DISCARDABLE_COUNT=1
CONFIG_BT_BUF_EVT_DISCARDABLE_SIZE=43
CONFIG_BT_BUF_EVT_RX_COUNT=2

CONFIG_BT_CONN_TX_MAX=2
CONFIG_BT_L2CAP_TX_BUF_COUNT=2
CONFIG_BT_CTLR_RX_BUFFERS=1
CONFIG_BT_BUF_ACL_TX_COUNT=3
CONFIG_BT_BUF_ACL_TX_SIZE=27

in myboard dir - Kconfig.defconfig:

config FLASH_25LP128
   bool "enables flash device"
   default y

 

when i call on device_get_binding like this:

const struct device *dev = device_get_binding("FLASH_25LP128");
	if (!dev) {
		LOG_ERR("FLASH_25LP128 not found in zephyr\n");
		return;
	}

also tried with - device_get_binding("FLASH_25LP128");  

and got the same result

i added a print in the ncs in the spi_nor.c file (lines 352-354) in the 'spi_nor_access' static function for debugging:

	int res = spi_transceive_dt(&driver_cfg->spi, &tx_set, &rx_set);
	LOG_ERR("spi_transceive_dt ret - %d\n", res);
	return res; //spi_transceive_dt(&driver_cfg->spi, &tx_set, &rx_set);
}

and i get this logs before the app :

[00000020] <err> spi_nor: JEDEC ID device acquired
[00000021] <wrn> spi_nrfx_spim: Transaction aborted since it would trigger nRF52832 PAN 58
[00000021] <err> spi_nor: spi_transceive_dt ret - -5

[00000022] <err> spi_nor: JEDEC ID read failed: -5
*** Booting Zephyr OS build v2.6.99-ncs1-1  ***

and after obviously the driver bind returns null

any ideas what i am doing wrong ?

hope to read from you soon

best regards

Ziv

[ziv123]

ok

so the issue was related to this part of the code in ncs (spi_nrfx_spim.c):

		/* This SPIM driver is only used by the NRF52832 if
		   SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58 is enabled */
		if (IS_ENABLED(CONFIG_SOC_NRF52832) &&
		   (xfer.rx_length == 1 && xfer.tx_length <= 1)) {
			LOG_WRN("Transaction aborted since it would trigger nRF52832 PAN 58");
			error = -EIO;
		}

which means it is not possible to work with spim on nrf52832, so the solution was to change in the device tree:

&spi2 {
		status = "okay";
		sck-pin = <5>; // gpio 0 pin 5
		mosi-pin = <4>; // gpio 0 pin 4
		miso-pin = <2>; // gpio 0 pin 2
		compatible = "nordic,nrf-spim"; -> change to "nordic, nrf-spi"
		

but now i fail on jedec, reading only zeros, meaning data is not passing (the HW is good i know because the same board works well with that flash when running with a different application) 

any ideas what kind of possible configurations or something else i am missing (all the configs shown in the first message remain the same)

hope to read from you soon

best regards

Ziv

[Hakon]

ziv123 said:

but now i fail on jedec, reading only zeros, meaning data is not passing

Maybe you need to use a different configuration for the SPI driver, like changing the IO pins to high-drive, or changing the SPI frequency. Have you checked the datasheet of the external flash?

[ziv123]

hi 

the spi is defined ok but the issue i think is that my flash needs to be powered by a pin pull down. 

and since i used zephyr build in driver which runs before the app starts i don't know how i can define this gpio behaviour .. so the question is, in order to avoid writing a new flash driver myself, is there a way to define in the .dts file that a driver, or specifically flash driver has a power pin which needs to be controlled or at list activated for the driver init function to work ?

[ziv123]

ok guess i am answering my self and not getting any help here

anyway .. there is SYS_INIT function which can be use to what i asked but basically it is not such an orgnize and nicly structured code because we do need to turn on and off the flash later in the application so it not nice .. so we decided to take the spi_nor driver and copy it and create our own flash driver based on the spi_nor driver.. however after inserting the pin change to the init function we again fall on assertions of spinlock and i do need some help with understanding this issue please

there is my .dts

// Copyright (c) 2022 Nordic Semiconductor ASA
// SPDX-License-Identifier: Apache-2.0

/dts-v1/;
#include <nordic/nrf52832_qfaa.dtsi>

/ {
	model = "halo_ep2";
	compatible = "halo-ep2";

	chosen {
		zephyr,sram = &sram0;
		zephyr,flash = &flash0;
		zephyr,code-partition = &slot0_partition;
		// nordic,pm-ext-flash = &augu_flash_is25lp128;
	};

	sensors_on: sensors_on_node {
		compatible = "augury,gpio-power";
		power_gpios = <&gpio0 22 GPIO_ACTIVE_LOW>;
		label = "SENSORS_ON";
		status = "okay";
		#power_resource-cells = <0>;
	};

	flash_on: flash_on_node {
		compatible = "augury,gpio-power";
		power_gpios = <&gpio0 23 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
		label = "FLASH_ON";
		status = "okay";
		#power_resource-cells = <0>;
	};	

    leds {
        compatible = "gpio-leds";
        led0_red: led_0 {
            gpios = <&gpio0 25 GPIO_ACTIVE_HIGH>;
            label = "RED_LED_0";
        };
        led1_orange: led_1 {
            gpios = <&gpio0 26 GPIO_ACTIVE_HIGH>;
            label = "ORANGE_LED_1";
        };
        led2_green: led_2 {
            gpios = <&gpio0 27 GPIO_ACTIVE_HIGH>;
            label = "GREEN_LED_2";
        };							
    };

	aliases {
		led0-red = &led0_red;
		led1-orange = &led1_orange;
		led2-green = &led2_green;

	};
};

	&adc {
		status ="okay";
	};

	&gpiote {
		status ="okay";
	};

	&gpio0 {
		status ="okay";
	};


	&spi1 {
		compatible = "nordic,nrf-spim";
		status = "okay";
		sck-pin = <20>;
		mosi-pin = <14>;    // p0.14
		miso-pin = <16>;    // p0.16
		cs-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
		iis3dwb@0 {
			compatible = "st,iis3dwb";
			reg = <0>;
			int1_gpios = <&gpio0 11 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>;
			int2_gpios = <&gpio0 12 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>;
			label = "IIS3DWB";
			power_resources = <&sensors_on>;
			spi-max-frequency = <8000000>;
		};
	};

	&spi2 {
		status = "okay";
		sck-pin = <5>; // gpio 0 pin 5
		mosi-pin = <4>; // gpio 0 pin 4
		miso-pin = <2>; // gpio 0 pin 2
		compatible = "nordic,nrf-spi";
		cs-gpios = <&gpio0 3 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
		augu_flash_is25lp128: augu_flash_is25lp128@0 {
			compatible = "issi,augu_flash_is25lp128";
			reg = <0>;
			label = "AUGU_FLASH_IS25LP128";
			power_resources = <&flash_on>;
			jedec_id = [9d 60 18];
			spi-max-frequency = <8000000>; //<133000000>;
			page_size = <2048>;
			block_size = <131072>;
			size = <0x8000000>;
		};
	};
	&flash0 {
		partitions {
			compatible = "fixed-partitions";
			#address-cells = <1>;
			#size-cells = <1>;

			mbr_partition: partition@0 {
				label = "mbr";
				reg = <0x00000000 0x00001000>;
			};
			boot_partition: partition@1000 {
				label = "mcuboot";
				reg = <0x1000 0xc000>;
			};
			slot0_partition: partition@d000 {
				label = "image-0";
				reg = <0xd000 0x6c800>;
			};
			slot1_partition: partition@79800 {
				label = "image-1";
				reg = <0x79800 0x800>;
			};
			storage_partition: partition@7a000 {
				label = "storage";
				reg = <0x7a000 0x6000>;
			};
		};
	};

there is myboard.conf

# SPI Flash
CONFIG_SPI=y

# Enable flash operations.
CONFIG_FLASH_MAP=y
CONFIG_FLASH_TESTS=y
CONFIG_FLASH_PAGE_LAYOUT=y
CONFIG_AUGU_FLASH_IS25LP128=y

CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048
CONFIG_BT_RX_STACK_SIZE=1024

# CONFIG_MAIN_STACK_SIZE=1024
CONFIG_MPSL_SIGNAL_STACK_SIZE=640

CONFIG_IDLE_STACK_SIZE=128
CONFIG_ISR_STACK_SIZE=1024
# keep CONFIG_HEAP_MEM_POOL_SIZE=16384 because this is needed by usb /nrfx modules
# CONFIG_HEAP_MEM_POOL_SIZE=16384
# CONFIG_HEAP_MEM_POOL_SIZE=10240
# CONFIG_HEAP_MEM_POOL_SIZE=8192
# CONFIG_HEAP_MEM_POOL_SIZE=4096
# CONFIG_HEAP_MEM_POOL_SIZE=3600
# CONFIG_HEAP_MEM_POOL_SIZE=2048
CONFIG_HEAP_MEM_POOL_SIZE=1024

CONFIG_NRFX_SPIM=y
CONFIG_NRFX_SPIM1=y
# CONFIG_SPI_0_NRF_SPIM

CONFIG_SOC_NRF52832_ALLOW_SPIM_DESPITE_PAN_58=y

# CONFIG_SERIAL=n

# Configurations set based on thread analyzer output.
# CONFIG_SDC_RX_STACK_SIZE=324
CONFIG_BT_HCI_TX_STACK_SIZE_WITH_PROMPT=y
CONFIG_BT_HCI_TX_STACK_SIZE=640


# Disable features not needed
# CONFIG_TIMESLICING=n
# CONFIG_MINIMAL_LIBC_MALLOC=n

# Disable Bluetooth features not needed
# CONFIG_BT_DEBUG_NONE=y
# CONFIG_BT_ASSERT=n
# CONFIG_BT_DATA_LEN_UPDATE=n
CONFIG_BT_PHY_UPDATE=n
# CONFIG_BT_GATT_CACHING=n
# CONFIG_BT_GATT_SERVICE_CHANGED=n
# CONFIG_BT_GAP_PERIPHERAL_PREF_PARAMS=n
# CONFIG_BT_SETTINGS_CCC_LAZY_LOADING=y
# CONFIG_BT_HCI_VS_EXT=n


# Disable Bluetooth controller features not needed
CONFIG_BT_CTLR_PRIVACY=n
CONFIG_BT_CTLR_PHY_2M=n
# Reduce Bluetooth buffers
CONFIG_BT_BUF_EVT_DISCARDABLE_COUNT=1
CONFIG_BT_BUF_EVT_DISCARDABLE_SIZE=43
CONFIG_BT_BUF_EVT_RX_COUNT=2

CONFIG_BT_CONN_TX_MAX=2
CONFIG_BT_L2CAP_TX_BUF_COUNT=2
CONFIG_BT_CTLR_RX_BUFFERS=1
CONFIG_BT_BUF_ACL_TX_COUNT=3
CONFIG_BT_BUF_ACL_TX_SIZE=27

there is my prj.conf

CONFIG_NUM_COOP_PRIORITIES=5
CONFIG_NUM_PREEMPT_PRIORITIES=10

CONFIG_NEWLIB_LIBC=y
CONFIG_CMSIS_DSP=y
CONFIG_CMSIS_DSP_FASTMATH=y
CONFIG_CMSIS_DSP_TRANSFORM=y
CONFIG_CMSIS_DSP_FILTERING=y
CONFIG_CMSIS_DSP_SUPPORT=y

CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y
CONFIG_CBPRINTF_FP_SUPPORT=y

#Allow use of legacy devicetree macros
# CONFIG_LEGACY_DEVICETREE_MACROS=y

CONFIG_NO_OPTIMIZATIONS=n       #Compiler optimizations will be set to -O0 independently of other options.
CONFIG_SIZE_OPTIMIZATIONS=y     #Compiler optimizations will be set to -Os independently of other options.
CONFIG_SPEED_OPTIMIZATIONS=n    #Compiler optimizations will be set to -O2 independently of other options.
CONFIG_DEBUG_OPTIMIZATIONS=n    #Compiler optimizations will be set to -Og independently of other options.

CONFIG_TINYCBOR=y
CONFIG_CBOR_FLOATING_POINT=y

# BLE Related Configs
CONFIG_BT=y
CONFIG_BT_PERIPHERAL=y
CONFIG_BT_DEVICE_NAME_DYNAMIC=y
CONFIG_BT_TPS=y
CONFIG_BT_DIS=y
CONFIG_BT_DIS_PNP=n
CONFIG_BT_DIS_SERIAL_NUMBER=y
CONFIG_BT_DIS_FW_REV=y
CONFIG_BT_DIS_HW_REV=y
CONFIG_BT_DIS_SW_REV=n
CONFIG_BT_CTLR_TX_PWR_PLUS_8=y

# Below is setup to let DIS information be read from settings
CONFIG_SETTINGS_RUNTIME=y
CONFIG_SETTINGS=y
CONFIG_SETTINGS_NONE=y
CONFIG_BT_SETTINGS=y
CONFIG_BT_DIS_SETTINGS=y
CONFIG_BT_DIS_STR_MAX=50
CONFIG_BT_GATT_CACHING=n
CONFIG_BT_HCI_VS_EXT=n
CONFIG_BT_LL_SW_SPLIT=y

# I2C Related Configs
CONFIG_I2C=y
CONFIG_I2C_0=n
CONFIG_I2C_GPIO=y

# ADC Related Configs
CONFIG_ADC=y
CONFIG_ADC_ASYNC=y

# Enable mcumgr.
CONFIG_MCUMGR=y

CONFIG_ASSERT=y
CONFIG_WATCHDOG=y


# Ensure an MCUboot-compatible binary is generated.
CONFIG_BOOTLOADER_MCUBOOT=y
CONFIG_MCUBOOT_SIGNATURE_KEY_FILE="root-rsa-2048.pem"   #mcuboot key
CONFIG_MCUBOOT_IMAGE_VERSION="1.1.3"
CONFIG_MCUBOOT_IMG_MANAGER=y

# Allow for large Bluetooth data packets.
CONFIG_BT_L2CAP_TX_MTU=252
CONFIG_BT_BUF_ACL_RX_SIZE=256
CONFIG_BT_BUF_ACL_TX_SIZE=251
CONFIG_BT_CTLR_DATA_LENGTH_MAX=251
CONFIG_BT_USER_DATA_LEN_UPDATE=y


# Enable the Bluetooth (unauthenticated) and shell mcumgr transports.
CONFIG_MCUMGR_SMP_BT=y
CONFIG_MCUMGR_SMP_BT_AUTHEN=n

# Enable flash operations.
CONFIG_FLASH=y
CONFIG_FLASH_JESD216_API=n
CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY=n

# Enable the LittleFS file system.
CONFIG_FILE_SYSTEM=y
CONFIG_FILE_SYSTEM_LITTLEFS=y

# Required by the `taskstat` command.
CONFIG_THREAD_MONITOR=y

# Enable statistics and statistic names.
CONFIG_STATS=y
CONFIG_STATS_NAMES=y

# Enable all core commands.
CONFIG_MCUMGR_CMD_FS_MGMT=y
CONFIG_MCUMGR_CMD_IMG_MGMT=y
CONFIG_MCUMGR_CMD_OS_MGMT=y
CONFIG_MCUMGR_CMD_STAT_MGMT=y


# sensors
CONFIG_NRFX_GPIOTE=y
CONFIG_NRFX_PPI=y
CONFIG_NRFX_TIMER0=y
CONFIG_NRFX_TIMER1=y
CONFIG_NRFX_TIMER2=y
CONFIG_NRFX_TIMER3=y
CONFIG_NRFX_TIMER4=y
CONFIG_SPI=y
CONFIG_SPI_ASYNC=y


CONFIG_GPIO=y

# LOG
CONFIG_LOG=y
CONFIG_LOG_PRINTK=y
CONFIG_LOG_BUFFER_SIZE=2048
CONFIG_LOG_BACKEND_FORMAT_TIMESTAMP=n

# enable console over SEGGER RTT
CONFIG_CONSOLE=y
CONFIG_USE_SEGGER_RTT=y
CONFIG_RTT_CONSOLE=y
CONFIG_SEGGER_RTT_BUFFER_SIZE_UP=8192

CONFIG_SENSOR=y
CONFIG_TEMP_NRF5=y
CONFIG_IIS3DWB=y
CONFIG_IIS3DWB_CALC_REAL_ODR=y
CONFIG_IIS3DWB_TRIGGER_OWN_THREAD=y
CONFIG_IIS3DWB_FIFO_TH=36
CONFIG_IIS3DWB_TEMPERATURE_SUPPORT=y
CONFIG_IIS3DWB_FIFO_DATA_READY_INT_PIN_1=y


CONFIG_AUGU_GPIO_POWER=y 


CONFIG_FPU=y
CONFIG_PM_DEVICE=y

and there is my addition to the spi_nor_configure function in the copied driver 

static int spi_nor_configure(const struct device *dev)
{
	const struct spi_nor_config *cfg = dev->config;
	uint8_t jedec_id[SPI_NOR_MAX_ID_LEN];
	int rc;

	/* Validate bus and CS is ready */
	if (!spi_is_ready(&cfg->spi)) {
		return -ENODEV;
	}

	/* Might be in DPD if system restarted without power cycle. */
	exit_dpd(dev);

	const struct device* power_dev = device_get_binding("FLASH_ON");
    int ret = augu_power_request(power_dev);
    if( 0 > ret )
    {
        LOG_ERR("failed in augu_power_request for flash");
        return ret;
    }
	/* now the spi bus is configured, we can verify SPI
	 * connectivity by reading the JEDEC ID.
	 */

	rc = spi_nor_read_jedec_id(dev, jedec_id);
	if (rc != 0) {
		LOG_ERR("JEDEC ID read failed: %d", rc);
		return -ENODEV;
	}
	LOG_INF("passed id test");
#ifndef CONFIG_SPI_NOR_SFDP_RUNTIME
	/* For minimal and devicetree we need to check the JEDEC ID
	 * against the one from devicetree, to ensure we didn't find a
	 * device that has different parameters.
	 */

	if (memcmp(jedec_id, cfg->jedec_id, sizeof(jedec_id)) != 0) {
		LOG_ERR("Device id %02x %02x %02x does not match config %02x %02x %02x",
			jedec_id[0], jedec_id[1], jedec_id[2],
			cfg->jedec_id[0], cfg->jedec_id[1], cfg->jedec_id[2]);
		return -EINVAL;
	}
#endif
	augu_power_release(power_dev);
	return 0;

there is the augu_power_request function code 

int augu_power_request(const struct device *dev)
{
    struct power_resource_data *data = (struct power_resource_data *)dev->data;
    struct onoff_client power_client;

	sys_notify_init_spinwait(&power_client.notify);

	int err = onoff_request(&data->onoff_mgr, &power_client);
	if (err < 0) {
		LOG_ERR("failed in power resource request: err = %d\n", err);
		return err;
	}

    int res = 0;
	do {
		err = sys_notify_fetch_result(&power_client.notify, &res);
		if (!err && res) {
			LOG_ERR("failed in power resource request: res = %d\n", res);
			return res;
		}
	} while (err);

    return 0;
}

and there is the log

ASSERTION FAIL [z_spin_lock_valid(l)] @ WEST_TOPDIR/zephyr/include/spinlock.h:129

  Recursive spinlock 0x5a7

[00000026] <err> os: r0/a1:  0x00000004  r1/a2:  0x00000081  r2/a3:  0x00000000
[00000026] <err> os: r3/a4:  0x00000002 r12/ip:  0x80000000 r14/lr:  0x00013429
[00000026] <err> os:  xpsr:  0x61000000
[00000027] <err> os: s[ 0]:  0x00000000  s[ 1]:  0x00000000  s[ 2]:  0x00000000  s[ 3]:  0x00000000
[00000027] <err> os: s[ 4]:  0x00000000  s[ 5]:  0x00000000  s[ 6]:  0x00000000  s[ 7]:  0x00000000
[00000028] <err> os: s[ 8]:  0x00000000  s[ 9]:  0x00000000  s[10]:  0x00000000  s[11]:  0x00000000
[00000028] <err> os: s[12]:  0x00000000  s[13]:  0x00000000  s[14]:  0x00000000  s[15]:  0x00000000
[00000028] <err> os: fpscr:  0x00000000
[00000029] <err> os: Faulting instruction address (r15/pc): 0x00038c48
[00000029] <err> os: >>> ZEPHYR FATAL ERROR 4: Kernel panic on CPU 0
[00000029] <err> os: Current thread: 0x200030b0 (unknown)
[00021409] <err> fatal_error: Resetting system
ASSERTION FAIL [z_spin_lock_valid(l)] @ WEST_TOPDIR/zephyr/include/spinlock.h:129

  Recursive spinlock 0x5a7

[00000026] <err> os: r0/a1:  0x00000004  r1/a2:  0x00000081  r2/a3:  0x00000000
[00000026] <err> os: r3/a4:  0x00000002 r12/ip:  0x80000000 r14/lr:  0x00013429
[00000026] <err> os:  xpsr:  0x61000000
[00000026] <err> os: s[ 0]:  0x00000000  s[ 1]:  0x00000000  s[ 2]:  0x00000000  s[ 3]:  0x00000000
[00000027] <err> os: s[ 4]:  0x00000000  s[ 5]:  0x00000000  s[ 6]:  0x00000000  s[ 7]:  0x00000000
[00000027] <err> os: s[ 8]:  0x00000000  s[ 9]:  0x00000000  s[10]:  0x00000000  s[11]:  0x00000000
[00000028] <err> os: s[12]:  0x00000000  s[13]:  0x00000000  s[14]:  0x00000000  s[15]:  0x00000000
[00000028] <err> os: fpscr:  0x00000000
[00000028] <err> os: Faulting instruction address (r15/pc): 0x00038c48
[00000028] <err> os: >>> ZEPHYR FATAL ERROR 4: Kernel panic on CPU 0
[00000029] <err> os: Current thread: 0x200030b0 (unknown)
[00012501] <err> fatal_error: Resetting system
ASSERTION FAIL [z_spin_lock_valid(l)] @ WEST_TOPDIR/zephyr/include/spinlock.h:129

  Recursive spinlock 0x5a7

hope to read from you soon

best regards

Ziv