Timer interrupt is not working(esp32)

[aslansq]

https://github.com/aslansq/zephyr/pull/1/files <<--- see my changes here

I have found alarm sample under counters folder but I think it is not really interrupt. It is a callback from OS after interrupt occured.

I wanted to implement real interrupt, there is not really a lot of examples. I have read technical reference manual of esp32c6-devkit-1 to teeth. Timer itself is working. If someone knows why mine is not working, it will be appreciated, thanks in advance.

Can we implement this using zephyr framework fully?

(.venv) aslan@thinkpad:~/zephyrproject/zephyr$ west build --sysbuild -p -b esp32c6_devkitc samples/drivers/counter/alarm && west flash && west espressif monitor
-- west build: making build dir /home/aslan/zephyrproject/zephyr/build pristine
-- west build: generating a build system
Loading Zephyr module(s) (Zephyr base): sysbuild_default
-- Found Python3: /home/aslan/zephyrproject/.venv/bin/python3 (found suitable version "3.10.12", minimum required is "3.10") found components: Interpreter 
-- Cache files will be written to: /home/aslan/.cache/zephyr
-- Found west (found suitable version "1.3.0", minimum required is "0.14.0")
-- Board: esp32c6_devkitc, qualifiers: esp32c6
Parsing /home/aslan/zephyrproject/zephyr/share/sysbuild/Kconfig
Loaded configuration '/home/aslan/zephyrproject/zephyr/build/_sysbuild/empty.conf'
Merged configuration '/home/aslan/zephyrproject/zephyr/build/_sysbuild/empty.conf'
Configuration saved to '/home/aslan/zephyrproject/zephyr/build/zephyr/.config'
Kconfig header saved to '/home/aslan/zephyrproject/zephyr/build/_sysbuild/autoconf.h'
-- 
   *****************************
   * Running CMake for mcuboot *
   *****************************

Loading Zephyr default modules (Zephyr base).
-- Application: /home/aslan/zephyrproject/bootloader/mcuboot/boot/zephyr
-- CMake version: 3.22.1
-- Found Python3: /home/aslan/zephyrproject/.venv/bin/python (found suitable version "3.10.12", minimum required is "3.10") found components: Interpreter 
-- Cache files will be written to: /home/aslan/.cache/zephyr
-- Zephyr version: 4.0.99 (/home/aslan/zephyrproject/zephyr)
-- Found west (found suitable version "1.3.0", minimum required is "0.14.0")
-- Board: esp32c6_devkitc, qualifiers: esp32c6
-- ZEPHYR_TOOLCHAIN_VARIANT not set, trying to locate Zephyr SDK
-- Found host-tools: zephyr 0.17.0 (/home/aslan/zephyr-sdk-0.17.0)
-- Found toolchain: zephyr 0.17.0 (/home/aslan/zephyr-sdk-0.17.0)
-- Found Dtc: /home/aslan/zephyr-sdk-0.17.0/sysroots/x86_64-pokysdk-linux/usr/bin/dtc (found suitable version "1.6.0", minimum required is "1.4.6") 
-- Found BOARD.dts: /home/aslan/zephyrproject/zephyr/boards/espressif/esp32c6_devkitc/esp32c6_devkitc.dts
-- Found devicetree overlay: /home/aslan/zephyrproject/bootloader/mcuboot/boot/zephyr/app.overlay
-- Generated zephyr.dts: /home/aslan/zephyrproject/zephyr/build/mcuboot/zephyr/zephyr.dts
-- Generated pickled edt: /home/aslan/zephyrproject/zephyr/build/mcuboot/zephyr/edt.pickle
-- Generated devicetree_generated.h: /home/aslan/zephyrproject/zephyr/build/mcuboot/zephyr/include/generated/zephyr/devicetree_generated.h
-- Including generated dts.cmake file: /home/aslan/zephyrproject/zephyr/build/mcuboot/zephyr/dts.cmake

warning: BOOT_MAX_IMG_SECTORS (defined at
/home/aslan/zephyrproject/bootloader/mcuboot/boot/zephyr/Kconfig:463) was assigned the value '512'
but got the value ''. Check these unsatisfied dependencies: (!BOOT_MAX_IMG_SECTORS_AUTO) (=n). See
http://docs.zephyrproject.org/latest/kconfig.html#CONFIG_BOOT_MAX_IMG_SECTORS and/or look up
BOOT_MAX_IMG_SECTORS in the menuconfig/guiconfig interface. The Application Development Primer,
Setting Configuration Values, and Kconfig - Tips and Best Practices sections of the manual might be
helpful too.

Parsing /home/aslan/zephyrproject/bootloader/mcuboot/boot/zephyr/Kconfig
Loaded configuration '/home/aslan/zephyrproject/zephyr/boards/espressif/esp32c6_devkitc/esp32c6_devkitc_defconfig'
Merged configuration '/home/aslan/zephyrproject/bootloader/mcuboot/boot/zephyr/prj.conf'
Merged configuration '/home/aslan/zephyrproject/bootloader/mcuboot/boot/zephyr/socs/esp32c6.conf'
Merged configuration '/home/aslan/zephyrproject/zephyr/build/mcuboot/zephyr/.config.sysbuild'
Configuration saved to '/home/aslan/zephyrproject/zephyr/build/mcuboot/zephyr/.config'
Kconfig header saved to '/home/aslan/zephyrproject/zephyr/build/mcuboot/zephyr/include/generated/zephyr/autoconf.h'
-- Found GnuLd: /home/aslan/zephyr-sdk-0.17.0/riscv64-zephyr-elf/riscv64-zephyr-elf/bin/ld.bfd (found version "2.38") 
-- The C compiler identification is GNU 12.2.0
-- The CXX compiler identification is GNU 12.2.0
-- The ASM compiler identification is GNU
-- Found assembler: /home/aslan/zephyr-sdk-0.17.0/riscv64-zephyr-elf/bin/riscv64-zephyr-elf-gcc
ESP-IDF path: /home/aslan/zephyrproject/modules/hal/espressif
esptool path: /home/aslan/zephyrproject/modules/hal/espressif/tools/esptool_py/esptool.py
check_callgraph using: /home/aslan/zephyrproject/modules/hal/espressif/tools/ci/check_callgraph.py
-- Using ccache: /usr/bin/ccache
Calculated maximum number of sectors: 464
-- Configuring done
-- Generating done
-- Build files have been written to: /home/aslan/zephyrproject/zephyr/build/mcuboot
-- 
   ***************************
   * Running CMake for alarm *
   ***************************

Loading Zephyr default modules (Zephyr base).
-- Application: /home/aslan/zephyrproject/zephyr/samples/drivers/counter/alarm
-- CMake version: 3.22.1
-- Found Python3: /home/aslan/zephyrproject/.venv/bin/python (found suitable version "3.10.12", minimum required is "3.10") found components: Interpreter 
-- Cache files will be written to: /home/aslan/.cache/zephyr
-- Zephyr version: 4.0.99 (/home/aslan/zephyrproject/zephyr)
-- Found west (found suitable version "1.3.0", minimum required is "0.14.0")
-- Board: esp32c6_devkitc, qualifiers: esp32c6
-- ZEPHYR_TOOLCHAIN_VARIANT not set, trying to locate Zephyr SDK
-- Found host-tools: zephyr 0.17.0 (/home/aslan/zephyr-sdk-0.17.0)
-- Found toolchain: zephyr 0.17.0 (/home/aslan/zephyr-sdk-0.17.0)
-- Found Dtc: /home/aslan/zephyr-sdk-0.17.0/sysroots/x86_64-pokysdk-linux/usr/bin/dtc (found suitable version "1.6.0", minimum required is "1.4.6") 
-- Found BOARD.dts: /home/aslan/zephyrproject/zephyr/boards/espressif/esp32c6_devkitc/esp32c6_devkitc.dts
-- Found devicetree overlay: /home/aslan/zephyrproject/zephyr/samples/drivers/counter/alarm/boards/esp32c6_devkitc.overlay
-- Generated zephyr.dts: /home/aslan/zephyrproject/zephyr/build/alarm/zephyr/zephyr.dts
-- Generated pickled edt: /home/aslan/zephyrproject/zephyr/build/alarm/zephyr/edt.pickle
-- Generated devicetree_generated.h: /home/aslan/zephyrproject/zephyr/build/alarm/zephyr/include/generated/zephyr/devicetree_generated.h
-- Including generated dts.cmake file: /home/aslan/zephyrproject/zephyr/build/alarm/zephyr/dts.cmake

warning: MCUBOOT_UPDATE_FOOTER_SIZE (defined at subsys/dfu/Kconfig:55) was assigned the value
'0x1000' but got the value ''. Check these unsatisfied dependencies: MCUBOOT_IMG_MANAGER (=n),
IMG_MANAGER (=n). See
http://docs.zephyrproject.org/latest/kconfig.html#CONFIG_MCUBOOT_UPDATE_FOOTER_SIZE and/or look up
MCUBOOT_UPDATE_FOOTER_SIZE in the menuconfig/guiconfig interface. The Application Development
Primer, Setting Configuration Values, and Kconfig - Tips and Best Practices sections of the manual
might be helpful too.

Parsing /home/aslan/zephyrproject/zephyr/samples/drivers/counter/alarm/Kconfig
Loaded configuration '/home/aslan/zephyrproject/zephyr/boards/espressif/esp32c6_devkitc/esp32c6_devkitc_defconfig'
Merged configuration '/home/aslan/zephyrproject/zephyr/samples/drivers/counter/alarm/prj.conf'
Merged configuration '/home/aslan/zephyrproject/zephyr/build/alarm/zephyr/.config.sysbuild'
Configuration saved to '/home/aslan/zephyrproject/zephyr/build/alarm/zephyr/.config'
Kconfig header saved to '/home/aslan/zephyrproject/zephyr/build/alarm/zephyr/include/generated/zephyr/autoconf.h'
-- Found GnuLd: /home/aslan/zephyr-sdk-0.17.0/riscv64-zephyr-elf/riscv64-zephyr-elf/bin/ld.bfd (found version "2.38") 
-- The C compiler identification is GNU 12.2.0
-- The CXX compiler identification is GNU 12.2.0
-- The ASM compiler identification is GNU
-- Found assembler: /home/aslan/zephyr-sdk-0.17.0/riscv64-zephyr-elf/bin/riscv64-zephyr-elf-gcc
-- Using ccache: /usr/bin/ccache
-- Including signing script: /home/aslan/zephyrproject/zephyr/cmake/mcuboot.cmake
-- Configuring done
-- Generating done
-- Build files have been written to: /home/aslan/zephyrproject/zephyr/build/alarm
-- Configuring done
-- Generating done
-- Build files have been written to: /home/aslan/zephyrproject/zephyr/build
-- west build: building application
[9/16] Performing build step for 'alarm'
[1/211] Preparing syscall dependency handling

[10/211] Generating include/generated/zephyr/version.h
-- Zephyr version: 4.0.99 (/home/aslan/zephyrproject/zephyr), build: 15488be6af4b
[211/211] Linking C executable zephyr/zephyr.elf
Memory region         Used Size  Region Size  %age Used
     mcuboot_hdr:          32 B         32 B    100.00%
        metadata:          80 B         96 B     83.33%
           FLASH:      133236 B    8388480 B      1.59%
     sram0_0_seg:       32032 B     425224 B      7.53%
     irom0_0_seg:       13796 B         8 MB      0.16%
     drom0_0_seg:        2292 B         8 MB      0.03%
      lp_ram_seg:          0 GB        16 KB      0.00%
        IDT_LIST:          0 GB         8 KB      0.00%
Generating files from /home/aslan/zephyrproject/zephyr/build/alarm/zephyr/zephyr.elf for board: esp32c6_devkitc
[11/16] Performing build step for 'mcuboot'
[1/244] Preparing syscall dependency handling

[11/244] Generating include/generated/zephyr/version.h
-- Zephyr version: 4.0.99 (/home/aslan/zephyrproject/zephyr), build: 15488be6af4b
[244/244] Linking C executable zephyr/zephyr.elf
Memory region         Used Size  Region Size  %age Used
        iram_seg:       40090 B        48 KB     81.56%
 iram_loader_seg:        4246 B        12 KB     34.55%
        dram_seg:       35680 B        40 KB     87.11%
        IDT_LIST:          0 GB         8 KB      0.00%
Generating files from /home/aslan/zephyrproject/zephyr/build/mcuboot/zephyr/zephyr.elf for board: esp32c6_devkitc
esptool.py v4.7.0
Creating esp32c6 image...
Merged 8 ELF sections
Successfully created esp32c6 image.
[16/16] Completed 'mcuboot'
-- west flash: rebuilding
[0/6] Performing build step for 'alarm'
[1/9] Generating include/generated/zephyr/version.h
-- Zephyr version: 4.0.99 (/home/aslan/zephyrproject/zephyr), build: f747a8343915
[9/9] Linking C executable zephyr/zephyr.elf
Memory region         Used Size  Region Size  %age Used
     mcuboot_hdr:          32 B         32 B    100.00%
        metadata:          80 B         96 B     83.33%
           FLASH:      133236 B    8388480 B      1.59%
     sram0_0_seg:       32032 B     425224 B      7.53%
     irom0_0_seg:       13796 B         8 MB      0.16%
     drom0_0_seg:        2292 B         8 MB      0.03%
      lp_ram_seg:          0 GB        16 KB      0.00%
        IDT_LIST:          0 GB         8 KB      0.00%
Generating files from /home/aslan/zephyrproject/zephyr/build/alarm/zephyr/zephyr.elf for board: esp32c6_devkitc
[1/6] Performing build step for 'mcuboot'
[2/13] Generating include/generated/zephyr/version.h
-- Zephyr version: 4.0.99 (/home/aslan/zephyrproject/zephyr), build: f747a8343915
[13/13] Linking C executable zephyr/zephyr.elf
Memory region         Used Size  Region Size  %age Used
        iram_seg:       40090 B        48 KB     81.56%
 iram_loader_seg:        4246 B        12 KB     34.55%
        dram_seg:       35680 B        40 KB     87.11%
        IDT_LIST:          0 GB         8 KB      0.00%
Generating files from /home/aslan/zephyrproject/zephyr/build/mcuboot/zephyr/zephyr.elf for board: esp32c6_devkitc
esptool.py v4.7.0
Creating esp32c6 image...
Merged 8 ELF sections
Successfully created esp32c6 image.
[6/6] Completed 'mcuboot'
-- west flash: using runner esp32
-- runners.esp32: reset after flashing requested
-- runners.esp32: Flashing esp32 chip on None (921600bps)
esptool.py v4.7.0
Found 34 serial ports
Serial port /dev/ttyUSB0
Connecting....
Detecting chip type... ESP32-C6
Chip is ESP32-C6 (QFN40) (revision v0.0)
Features: WiFi 6, BT 5, IEEE802.15.4
Crystal is 40MHz
MAC: 40:4c:ca:ff:fe:4e:08:90
BASE MAC: 40:4c:ca:4e:08:90
MAC_EXT: ff:fe
Uploading stub...
Running stub...
Stub running...
Changing baud rate to 921600
Changed.
Configuring flash size...
Auto-detected Flash size: 8MB
Flash will be erased from 0x00000000 to 0x0000dfff...
SHA digest in image updated
Wrote 65536 bytes at 0x00000000 in 0.9 seconds (604.3 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...
-- west flash: using runner esp32
-- runners.esp32: reset after flashing requested
-- runners.esp32: Flashing esp32 chip on None (921600bps)
esptool.py v4.7.0
Found 33 serial ports
Serial port /dev/ttyUSB0
Connecting....
Detecting chip type... ESP32-C6
Chip is ESP32-C6 (QFN40) (revision v0.0)
Features: WiFi 6, BT 5, IEEE802.15.4
Crystal is 40MHz
MAC: 40:4c:ca:ff:fe:4e:08:90
BASE MAC: 40:4c:ca:4e:08:90
MAC_EXT: ff:fe
Uploading stub...
Running stub...
Stub running...
Changing baud rate to 921600
Changed.
Configuring flash size...
Auto-detected Flash size: 8MB
Flash will be erased from 0x00020000 to 0x00040fff...
Wrote 147456 bytes at 0x00020000 in 1.7 seconds (699.3 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...
Serial port /dev/ttyUSB0
Connecting....
Detecting chip type... ESP32-C6
--- idf_monitor on /dev/ttyUSB0 115200 ---
--- Quit: Ctrl+] | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H ---
ESP-ROM:esp32c6-20220919
Build:Sep 19 2022
rst:0x1 (POWERON),boot:0xc (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:2
load:0x40851d08,len:0x275c
load:0x4085be00,len:0x9ba4
load:0x40867d08,len:0x1098
entry 0x4085e72c
I (40) soc_init: MCUboot 2nd stage bootloader
I (40) soc_init: compile time Jan 21 2025 19:44:31
I (40) spi_flash: detected chip: gd
I (41) spi_flash: flash io: dio
W (43) spi_flash: Detected size(8192k) larger than the size in the binary image header(2048k). Using the size in the binary image header.
I (55) soc_init: chip revision: v0.0
I (58) flash_init: SPI Speed      : 80MHz
I (62) flash_init: SPI Mode       : DIO
I (66) flash_init: SPI Flash Size : 8MB
I (69) soc_random: Enabling RNG early entropy source
I (74) soc_random: Disabling RNG early entropy source
I (79) boot: Jumping to the main image...
I (118) spi_flash: flash io: dio
[esp32c6] [INF] Image index: 0, Swap type: none
[esp32c6] [INF] Loading image 0 - slot 0 from flash, area id: 1
[esp32c6] [INF] Application start=40800d4ah
[esp32c6] [INF] DRAM segment: paddr=00024be0h, vaddr=40804b70h, size=00b34h (  2868) load
[esp32c6] [INF] IRAM segment: paddr=00020080h, vaddr=40800000h, size=04b60h ( 19296) load
I (151) boot: DROM segment: paddr=00040000h, vaddr=42800000h, size=00900h (  2304) map
I (151) boot: IROM segment: paddr=00030000h, vaddr=42000000h, size=035E4h ( 13796) map
I (166) soc_random: Disabling RNG early entropy source
I (166) boot: Jumping to the main image...
I (199) heap_runtime: ESP heap runtime init at 0x40807d20 size 466 kB.
*** Booting Zephyr OS build f747a8343915 ***
Counter alarm sample
Set alarm in 2 sec (80000000 ticks)
0
40
81
121
162
202
243
284
324
365
405
446
486
527
568
608
649
689
730
771
!!! Alarm !!!
Now: 2
Set alarm in 4 sec (160000000 ticks)
811
852
892
933
973
1014
1055
1095
1136
1176
1217
1257
1298
1339
1379
1420
1460
1501
1542
1582
1623
1663

Traceback (most recent call last):
  File "/home/aslan/zephyrproject/zephyr/../modules/hal/espressif/tools/idf_monitor/idf_monitor.py", line 354, in <module>
    main()
  File "/home/aslan/zephyrproject/zephyr/../modules/hal/espressif/tools/idf_monitor/idf_monitor.py", line 345, in main
    monitor.main_loop()
  File "/home/aslan/zephyrproject/zephyr/../modules/hal/espressif/tools/idf_monitor/idf_monitor.py", line 154, in main_loop
    self._main_loop()
  File "/home/aslan/zephyrproject/zephyr/../modules/hal/espressif/tools/idf_monitor/idf_monitor.py", line 258, in _main_loop
    super()._main_loop()
  File "/home/aslan/zephyrproject/zephyr/../modules/hal/espressif/tools/idf_monitor/idf_monitor.py", line 194, in _main_loop
    self.serial_handler.handle_commands(data, self.target, self.run_make, self.console_reader,
  File "/home/aslan/zephyrproject/modules/hal/espressif/tools/idf_monitor/idf_monitor_base/serial_handler.py", line 163, in handle_commands
    console_reader.stop()
  File "/home/aslan/zephyrproject/modules/hal/espressif/tools/idf_monitor/idf_monitor_base/stoppable_thread.py", line 67, in stop
    self._cancel()
  File "/home/aslan/zephyrproject/modules/hal/espressif/tools/idf_monitor/idf_monitor_base/console_reader.py", line 97, in _cancel
    fcntl.ioctl(self.console.fd, termios.TIOCSTI, b'\0')
OSError: [Errno 5] Input/output error
FATAL ERROR: command exited with status 1: /home/aslan/zephyrproject/.venv/bin/python3 /home/aslan/zephyrproject/zephyr/../modules/hal/espressif/tools/idf_monitor/idf_monitor.py -p /dev/ttyUSB0 -b 115200 /home/aslan/zephyrproject/zephyr/build/alarm/zephyr/zephyr.elf --eol CRLF
(.venv) aslan@thinkpad:~/zephyrproject/zephyr$ ^C

[aslansq]

solution

#include "pcr_struct.h"
#include "pcr_reg.h"
#include "timer_group_struct.h"
#include "timer_group_reg.h"
#include "periph_defs.h"
#include <zephyr/devicetree.h>
static volatile uint32_t global_var = 0;

void timer1_setup(void) {
	REG_SET_BIT(PCR_TIMERGROUP1_CONF_REG, PCR_TG1_CLK_EN_M);
	REG_CLR_BIT(PCR_TIMERGROUP1_CONF_REG, PCR_TG1_RST_EN_M);
	printk("pcr cfg %u\n", REG_READ(PCR_TIMERGROUP1_CONF_REG));
	REG_SET_BIT(PCR_TIMERGROUP1_TIMER_CLK_CONF_REG, PCR_TG1_TIMER_CLK_EN_M);
	REG_SET_BIT(PCR_TIMERGROUP1_TIMER_CLK_CONF_REG, (1<<PCR_TG1_TIMER_CLK_SEL_S));
	printk("pcr clk cfg %u\n", REG_READ(PCR_TIMERGROUP1_TIMER_CLK_CONF_REG));

	REG_WRITE(TIMG_T0CONFIG_REG(1), 0);
	REG_SET_BIT(TIMG_T0CONFIG_REG(1), (
		(2000<<TIMG_T0_DIVIDER_S) |
		TIMG_T0_DIVCNT_RST_M |
		TIMG_T0_INCREASE_M |
		TIMG_T0_ALARM_EN_M
	));
	printk("tm1 cfg %u\n", REG_READ(TIMG_T0CONFIG_REG(1)));

	REG_WRITE(TIMG_T0ALARMLO_REG(1), 20000);
	REG_WRITE(TIMG_T0ALARMHI_REG(1), 0);
	printk("tm1 alm lo %u\n", REG_READ(TIMG_T0ALARMLO_REG(1)));
	printk("tm1 alm hi %u\n", REG_READ(TIMG_T0ALARMHI_REG(1)));

	REG_SET_BIT(TIMG_INT_ENA_TIMERS_REG(1), TIMG_T0_INT_ENA_M);
	printk("tm1 int ena %u\n", REG_READ(TIMG_INT_ENA_TIMERS_REG(1)));

	REG_WRITE(TIMG_T0LOADLO_REG(1), 0);
	printk("tm1 load lo %u\n", REG_READ(TIMG_T0LOADLO_REG(1)));
	REG_WRITE(TIMG_T0LOADHI_REG(1), 0);
	printk("tm1 load hi %u\n", REG_READ(TIMG_T0LOADHI_REG(1)));

	REG_SET_BIT(TIMG_T0CONFIG_REG(1), (TIMG_T0_EN_M | TIMG_T0_AUTORELOAD_M));
	printk("tm1 cfg %u\n", REG_READ(TIMG_T0CONFIG_REG(1)));
}

void timer1_handler(void *arg)
{
	REG_SET_BIT(TIMG_INT_CLR_TIMERS_REG(1), TIMG_T0_INT_CLR_M);
	REG_SET_BIT(TIMG_T0CONFIG_REG(1), (TIMG_T0_EN_M | TIMG_T0_ALARM_EN_M));
	global_var++;
}

int main(void)
{
	uint32_t timeout = 0;
	const struct device *const counter_dev = DEVICE_DT_GET(TIMER);
	int err;

	printk("Counter alarm sample\n\n");

	if (!device_is_ready(counter_dev)) {
		printk("device not ready.\n");
		return 0;
	}

	counter_start(counter_dev);

	alarm_cfg.flags = 0;
	alarm_cfg.ticks = counter_us_to_ticks(counter_dev, DELAY);
	alarm_cfg.callback = test_counter_interrupt_fn;
	alarm_cfg.user_data = &alarm_cfg;

	err = counter_set_channel_alarm(counter_dev, ALARM_CHANNEL_ID,
					&alarm_cfg);
	printk("Set alarm in %u sec (%u ticks)\n",
	       (uint32_t)(counter_ticks_to_us(counter_dev,
					   alarm_cfg.ticks) / USEC_PER_SEC),
	       alarm_cfg.ticks);

	if (-EINVAL == err) {
		printk("Alarm settings invalid\n");
	} else if (-ENOTSUP == err) {
		printk("Alarm setting request not supported\n");
	} else if (err != 0) {
		printk("Error\n");
	}

	IRQ_CONNECT(ETS_TG1_T0_LEVEL_INTR_SOURCE, 2, timer1_handler, NULL, 0);
	irq_enable(ETS_TG1_T0_LEVEL_INTR_SOURCE);
	timer1_setup();

	while (1) {
		REG_SET_BIT(TIMG_T0UPDATE_REG(1), TIMG_T0_UPDATE_M);
		while(REG_GET_BIT(TIMG_T0UPDATE_REG(1), TIMG_T0_UPDATE_M) && timeout < 100) {
			timeout++;
		}
		if(timeout < 100) {
			uint64_t val = REG_READ(TIMG_T0LO_REG(1)) | ((uint64_t)(REG_READ(TIMG_T0HI_REG(1)) & TIMG_T0_HI_M) << 32);
			printk("%llu\n", val);
		} else {
			printk("tm1 update timeout\n");
		}

		if(global_var) {
			printk("tm1 int\n");
			global_var = 0;
		}

		k_msleep(100);
		timeout = 0;
	}
	return 0;
}