die_temp: STM32: add capability to ask for die_temp by KurtE · Pull Request #516 · arduino/ArduinoCore-zephyr

KurtE · 2026-06-16T23:02:45Z

Enabled the die_temp sensor code for the STM32 boards, which include: Uno Q, Portenta H7, Giga, Nicla Vision.

There is an issue that this requires an ADC to be "Ready", and some of our boards are setup that these are defer-init. Two easy possible fixes, remove the defer-init form the correct ADC object(s). Or I patched the zephyr drivers:

        modified:   drivers/sensor/st/stm32_temp/stm32_temp.c
        modified:   drivers/sensor/st/stm32_vref/stm32_vref.c

Where if the ADC object device is not ready I call device_init on it.

I have run the sketch:


  IF_ENABLED(DT_NODE_EXISTS(DIE_TEMP_ALIAS(i)), (DEVICE_DT_GET(DIE_TEMP_ALIAS(i)), ))

/* support up to 16 cpu die temperature sensors */
static const struct device *const sensors[] = { LISTIFY(16, DIE_TEMPERATURE_SENSOR, ()) };

static int get_die_temperature(const struct device *dev) {
  struct sensor_value val;
  int rc;

  //printk("get_die_temperature: %p\n", dev);
  /* fetch sensor samples */
  rc = sensor_sample_fetch(dev);
  //printk("sensor_sample_fetch: %d\n", rc);
  if (rc) {
    printk("Failed to fetch sample (%d)\n", rc);
    return rc;
  }

  rc = sensor_channel_get(dev, SENSOR_CHAN_DIE_TEMP, &val);
  //printk("sensor_channel_get: %d\n", rc);
  if (rc) {
    printk("Failed to get data (%d)\n", rc);
    return rc;
  }

  printk("CPU Die temperature[%s]: %.1f °C\n", dev->name, sensor_value_to_double(&val));
  return 0;
}

double CPUTemperature(uint8_t sensor_index = 0) {
  if (sensor_index >= ARRAY_SIZE(sensors)) return 0.0 / 0.0;
  const struct device *dev = sensors[0];

  struct sensor_value val;
  int rc;

  //printk("get_die_temperature: %p\n", dev);
  /* fetch sensor samples */
  rc = sensor_sample_fetch(dev);
  //printk("sensor_sample_fetch: %d\n", rc);
  if (rc) return 0.0 / 0.0;

  rc = sensor_channel_get(dev, SENSOR_CHAN_DIE_TEMP, &val);
  if (rc) return 0.0 / 0.0;

  return sensor_value_to_double(&val);
}

void setup() {
  Serial.begin(115200);

  while (!Serial && millis() < 5000) {}
  delay(2000);
  Serial.print("Test DIE_TEMP count: ");
  Serial.println(ARRAY_SIZE(sensors));

  for (size_t i = 0; i < ARRAY_SIZE(sensors); i++) {
    int rc = get_die_temperature(sensors[i]);
    if (rc < 0) {
      return;
    }
  }
}

void loop() {
  double temp = CPUTemperature();
  Serial.print("CPU Temp C:");
  Serial.print(temp, 2);
  if (!isnan(temp)) {
    Serial.print(" F:");
    Serial.print(temp * 1.8 + 32.0, 2);
  }
  Serial.println();
  delay(5000);
}

On all of these boards mentioned:
Last one I tried was Nicla Vision:

Serial Monitor window:

Test DIE_TEMP count: 1
CPU Temp C:33.59 F:92.47
CPU Temp C:33.59 F:92.47
CPU Temp C:33.27 F:91.88
CPU Temp C:32.94 F:91.29
CPU Temp C:32.94 F:91.29
CPU Temp C:32.61 F:90.70
CPU Temp C:32.61 F:90.70
CPU Temp C:33.27 F:91.88
CPU Temp C:33.27 F:91.88
CPU Temp C:32.61 F:90.70
CPU Temp C:32.94 F:91.29

Debug Window:

WLAN MAC Address : FC:84:A7:FA:A9:85
WLAN Firmware    : wl0: Jan 30 2020 21:41:53 version 7.45.98.95 (r724303 CY) FWID 01-5afc8c1e
WLAN CLM         : API: 12.2 Data: 9.10.39 Compiler: 1.29.4 ClmImport: 1.36.3 Creation: 2020-01-30 21:30:05
WHD VERSION      : 3.3.2.25168 : v3.3.2 : GCC 12.2 : 2024-12-06 06:53:17 +0000
CPU Die temperature[dietemp]: 33.3 °C

github-actions · 2026-06-16T23:23:05Z

Built `0.56.0-rc1.pr.516.13+56302d1e`

CI run PASSED 🟢

Artifact	Board	Core	Tests	RAM	Sketches	Warnings	Errors
✅* `zephyr_contrib`	`ek_ra8d1`	📗	✅*	11.9%	2	2	-
	`frdm_mcxn947`	7 🏷️	✅*	58.0%	2	2	-
	`frdm_rw612`	2 🏷️	✅*	83.0%	2	2	-
✔️* `zephyr_main`	`giga`	5 🏷️	✅*	39.4%	68	26	-
	`nano33ble`	1 🏷️	✅*	78.8%	30	8	-
	`nano_matter`	1 🏷️	✅*	⚠️ 86.1%	22	8	-
	`nicla_sense`	2 🏷️	✅*	⚠️ 87.6%	18	8	-
	`nicla_vision`	5 🏷️	✔️*	41.7%	52	16	(2)*
	`opta`	5 🏷️	✅*	42.4%	62	18	-
	`portentac33`	3 🏷️	✅*	80.6%	66	16	-
	`portentah7`	4 🏷️	✅*	43.2%	80	22	-
✅* `zephyr_unoq`	`unoq`	📗	✅*	43.6%	56	8	-

Legend

Board Test Status description

🔥 🔥 Test run failed to complete.

❌ 🔴 Test completed with unexpected errors.

⁉️ ⁉️ Test was expected to fail but passed; exception entry is outdated.

✔️* 🚫 Test completed with errors, but all are known/expected.

✅* 🟡 Test completed with some warnings; no errors detected.

✅ 🟢 Test passed successfully, with no warnings or errors.

🌑 🌑 Test was skipped.

KurtE · 2026-06-17T02:11:49Z

This relies on the changes made to arduino/zephyr
arduino/zephyr#21

KurtE · 2026-06-17T13:18:37Z

@facchinm @pennam - I am marking this as ready for review, ditto for the change for Zephyr where it tries to recover the die-temp and the like object if the underlying ADC is marked as deferred-init.

So far I have not created a library to call it, only the sketch, although could easily extract the stuff from the test sketch
to do so and define API like:

double CPUTemperature(uint8_t sensor_index = 0) {
  if (sensor_index >= ARRAY_SIZE(sensors)) return 0.0 / 0.0;
  const struct device *dev = sensors[0];

  struct sensor_value val;
  int rc;

  //printk("get_die_temperature: %p\n", dev);
  /* fetch sensor samples */
  rc = sensor_sample_fetch(dev);
  //printk("sensor_sample_fetch: %d\n", rc);
  if (rc) return 0.0 / 0.0;

  rc = sensor_channel_get(dev, SENSOR_CHAN_DIE_TEMP, &val);
  if (rc) return 0.0 / 0.0;

  return sensor_value_to_double(&val);
}

github-actions · 2026-06-18T14:54:10Z

Built `0.56.1-0.pr.516.3+f1f8d6b3`

CI run PASSED 🟢

Artifact	Board	Core	Tests	RAM	Sketches	Warnings	Errors
✅* `zephyr_contrib`	`ek_ra8d1`	📗	✅*	11.9%	2	2	-
	`frdm_mcxn947`	7 🏷️	✅*	58.0%	2	2	-
	`frdm_rw612`	2 🏷️	✅*	83.0%	2	2	-
✔️* `zephyr_main`	`giga`	5 🏷️	✅*	39.4%	68	26	-
	`nano33ble`	1 🏷️	✅*	78.8%	30	8	-
	`nano_matter`	1 🏷️	✅*	⚠️ 86.1%	22	8	-
	`nicla_sense`	2 🏷️	✅*	⚠️ 87.6%	18	8	-
	`nicla_vision`	5 🏷️	✔️*	41.7%	52	16	(2)*
	`opta`	5 🏷️	✅*	42.4%	62	18	-
	`portentac33`	3 🏷️	✅*	80.6%	66	16	-
	`portentah7`	4 🏷️	✅*	43.2%	80	22	-
✅* `zephyr_unoq`	`unoq`	📗	✅*	43.6%	56	8	-

Legend

Board Test Status description

🔥 🔥 Test run failed to complete.

❌ 🔴 Test completed with unexpected errors.

⁉️ ⁉️ Test was expected to fail but passed; exception entry is outdated.

✔️* 🚫 Test completed with errors, but all are known/expected.

✅* 🟡 Test completed with some warnings; no errors detected.

✅ 🟢 Test passed successfully, with no warnings or errors.

🌑 🌑 Test was skipped.

Enabled the die_temp sensor code for the STM32 boards, which include: Uno Q, Portenta H7, Giga, Nicla Vision. There is an issue that this requires an ADC to be "Ready", and some of our boards are setup that these are defer-init. Two easy possible fixes, remove the defer-init form the correct ADC object(s). Or I patched the zephyr drivers: ``` modified: drivers/sensor/st/stm32_temp/stm32_temp.c modified: drivers/sensor/st/stm32_vref/stm32_vref.c ``` Where if the ADC object device is not ready I call device_init on it. I have run the sketch: ``` IF_ENABLED(DT_NODE_EXISTS(DIE_TEMP_ALIAS(i)), (DEVICE_DT_GET(DIE_TEMP_ALIAS(i)), )) /* support up to 16 cpu die temperature sensors */ static const struct device *const sensors[] = { LISTIFY(16, DIE_TEMPERATURE_SENSOR, ()) }; static int get_die_temperature(const struct device *dev) { struct sensor_value val; int rc; //printk("get_die_temperature: %p\n", dev); /* fetch sensor samples */ rc = sensor_sample_fetch(dev); //printk("sensor_sample_fetch: %d\n", rc); if (rc) { printk("Failed to fetch sample (%d)\n", rc); return rc; } rc = sensor_channel_get(dev, SENSOR_CHAN_DIE_TEMP, &val); //printk("sensor_channel_get: %d\n", rc); if (rc) { printk("Failed to get data (%d)\n", rc); return rc; } printk("CPU Die temperature[%s]: %.1f °C\n", dev->name, sensor_value_to_double(&val)); return 0; } double CPUTemperature(uint8_t sensor_index = 0) { if (sensor_index >= ARRAY_SIZE(sensors)) return 0.0 / 0.0; const struct device *dev = sensors[0]; struct sensor_value val; int rc; //printk("get_die_temperature: %p\n", dev); /* fetch sensor samples */ rc = sensor_sample_fetch(dev); //printk("sensor_sample_fetch: %d\n", rc); if (rc) return 0.0 / 0.0; rc = sensor_channel_get(dev, SENSOR_CHAN_DIE_TEMP, &val); if (rc) return 0.0 / 0.0; return sensor_value_to_double(&val); } void setup() { Serial.begin(115200); while (!Serial && millis() < 5000) {} delay(2000); Serial.print("Test DIE_TEMP count: "); Serial.println(ARRAY_SIZE(sensors)); for (size_t i = 0; i < ARRAY_SIZE(sensors); i++) { int rc = get_die_temperature(sensors[i]); if (rc < 0) { return; } } } void loop() { double temp = CPUTemperature(); Serial.print("CPU Temp C:"); Serial.print(temp, 2); if (!isnan(temp)) { Serial.print(" F:"); Serial.print(temp * 1.8 + 32.0, 2); } Serial.println(); delay(5000); } ``` On all of these boards mentioned: Last one I tried was Nicla Vision: Serial Monitor window: ``` Test DIE_TEMP count: 1 CPU Temp C:33.59 F:92.47 CPU Temp C:33.59 F:92.47 CPU Temp C:33.27 F:91.88 CPU Temp C:32.94 F:91.29 CPU Temp C:32.94 F:91.29 CPU Temp C:32.61 F:90.70 CPU Temp C:32.61 F:90.70 CPU Temp C:33.27 F:91.88 CPU Temp C:33.27 F:91.88 CPU Temp C:32.61 F:90.70 CPU Temp C:32.94 F:91.29 ``` Debug Window: ``` WLAN MAC Address : FC:84:A7:FA:A9:85 WLAN Firmware : wl0: Jan 30 2020 21:41:53 version 7.45.98.95 (r724303 CY) FWID 01-5afc8c1e WLAN CLM : API: 12.2 Data: 9.10.39 Compiler: 1.29.4 ClmImport: 1.36.3 Creation: 2020-01-30 21:30:05 WHD VERSION : 3.3.2.25168 : v3.3.2 : GCC 12.2 : 2024-12-06 06:53:17 +0000 CPU Die temperature[dietemp]: 33.3 °C ```

To correspond to the marking of the underlying ADC modules

Not sure the best place for this. Could be a library included like this, or could be built-in or external library. But Added it here, as for testing and review. Tested it so far with: UnoQ, Nicla Vision, Giga. WIll recheck again on Portenta H7, but worked before

github-actions · 2026-06-18T22:26:40Z

Built `0.56.1-0.pr.516.4+473958d8`

CI run PASSED 🟢

Artifact	Board	Core	Tests	RAM	Sketches	Warnings	Errors
✅* `zephyr_contrib`	`ek_ra8d1`	📗	✅*	11.9%	2	2	-
	`frdm_mcxn947`	7 🏷️	✅*	58.0%	2	2	-
	`frdm_rw612`	2 🏷️	✅*	83.0%	2	2	-
✔️* `zephyr_main`	`giga`	5 🏷️	✅*	39.4%	70	26	-
	`nano33ble`	1 🏷️	✅*	78.8%	32	10	-
	`nano_matter`	1 🏷️	✅*	⚠️ 86.1%	24	10	-
	`nicla_sense`	2 🏷️	✅*	⚠️ 87.6%	20	10	-
	`nicla_vision`	5 🏷️	✔️*	41.7%	54	16	(2)*
	`opta`	5 🏷️	✅*	42.4%	64	18	-
	`portentac33`	3 🏷️	✅*	80.6%	68	18	-
	`portentah7`	4 🏷️	✅*	43.2%	82	22	-
✅* `zephyr_unoq`	`unoq`	📗	✅*	43.6%	58	8	-

Legend

Board Test Status description

🔥 🔥 Test run failed to complete.

❌ 🔴 Test completed with unexpected errors.

⁉️ ⁉️ Test was expected to fail but passed; exception entry is outdated.

✔️* 🚫 Test completed with errors, but all are known/expected.

✅* 🟡 Test completed with some warnings; no errors detected.

✅ 🟢 Test passed successfully, with no warnings or errors.

🌑 🌑 Test was skipped.

github-actions · 2026-06-18T22:27:01Z

Memory usage change @ 473958d

Board	flash	%	RAM for global variables	%
`arduino:zephyr:unoq:link_mode=dynamic`	🔺 +244 - +244	0.0 - 0.0	🔺 +16 - +16	0.0 - 0.0
`arduino:zephyr:unoq:link_mode=static`	🔺 +16 - +16	0.0 - 0.0	❔ -368 - +656	-0.13 - +0.32
`arduino:zephyr_contrib:ek_ra8d1:link_mode=dynamic`	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
`arduino:zephyr_contrib:ek_ra8d1:link_mode=static`	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
`arduino:zephyr_contrib:frdm_mcxn947:link_mode=dynamic`	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
`arduino:zephyr_contrib:frdm_mcxn947:link_mode=static`	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
`arduino:zephyr_contrib:frdm_rw612:link_mode=dynamic`	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
`arduino:zephyr_contrib:frdm_rw612:link_mode=static`	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
`arduino:zephyr_main:giga:link_mode=dynamic`	🔺 +244 - +244	0.0 - +0.01	🔺 +16 - +16	0.0 - 0.0
`arduino:zephyr_main:giga:link_mode=static`	🔺 +16 - +16	0.0 - 0.0	0 - 0	0.0 - 0.0
`arduino:zephyr_main:nano33ble:link_mode=dynamic`	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
`arduino:zephyr_main:nano33ble:link_mode=static`	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
`arduino:zephyr_main:nano_matter:link_mode=dynamic`	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
`arduino:zephyr_main:nano_matter:link_mode=static`	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
`arduino:zephyr_main:nicla_sense:link_mode=dynamic`	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
`arduino:zephyr_main:nicla_sense:link_mode=static`	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
`arduino:zephyr_main:nicla_vision:link_mode=dynamic`	🔺 +244 - +244	0.0 - +0.01	🔺 +16 - +16	0.0 - 0.0
`arduino:zephyr_main:nicla_vision:link_mode=static`	🔺 +16 - +16	0.0 - 0.0	0 - 0	0.0 - 0.0
`arduino:zephyr_main:opta:link_mode=dynamic`	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
`arduino:zephyr_main:opta:link_mode=static`	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
`arduino:zephyr_main:portentac33:link_mode=dynamic`	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
`arduino:zephyr_main:portentac33:link_mode=static`	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
`arduino:zephyr_main:portentah7:link_mode=dynamic`	🔺 +228 - +244	0.0 - +0.01	🔺 +16 - +16	0.0 - 0.0
`arduino:zephyr_main:portentah7:link_mode=static`	🔺 +16 - +16	0.0 - 0.0	0 - 0	0.0 - 0.0

Click for full report table

Board	`ArduinoCore-zephyr/libraries/CPUTemperature/examples/CPUTemperature` flash	%	`ArduinoCore-zephyr/libraries/CPUTemperature/examples/CPUTemperature` RAM for global variables	%	`RTC AlarmRTC` flash	%	`RTC AlarmRTC` RAM for global variables	%	`RTC SimpleRTC` flash	%	`RTC SimpleRTC` RAM for global variables	%	`RTC CalibrationRTC` flash	%	`RTC CalibrationRTC` RAM for global variables	%	`CAN CANWrite` flash	%	`CAN CANWrite` RAM for global variables	%	`CAN CANEvent` flash	%	`CAN CANEvent` RAM for global variables	%	`CAN CANRead` flash	%	`CAN CANRead` RAM for global variables	%	`Arduino_LED_Matrix Basic` flash	%	`Arduino_LED_Matrix Basic` RAM for global variables	%	`Arduino_LED_Matrix Reflash_Bootanimation` flash	%	`Arduino_LED_Matrix Reflash_Bootanimation` RAM for global variables	%	`Arduino_LED_Matrix Video` flash	%	`Arduino_LED_Matrix Video` RAM for global variables	%	`arduino-examples 01.Basics/Blink` flash	%	`arduino-examples 01.Basics/Blink` RAM for global variables	%	`arduino-examples 01.Basics/AnalogReadSerial` flash	%	`arduino-examples 01.Basics/AnalogReadSerial` RAM for global variables	%	`arduino-examples 04.Communication/SerialPassthrough` flash	%	`arduino-examples 04.Communication/SerialPassthrough` RAM for global variables	%	`Arduino_JSON JSONValueExtractor` flash	%	`Arduino_JSON JSONValueExtractor` RAM for global variables	%	`Arduino_JSON JSONObject` flash	%	`Arduino_JSON JSONObject` RAM for global variables	%	`Arduino_JSON JSONKitchenSink` flash	%	`Arduino_JSON JSONKitchenSink` RAM for global variables	%	`Arduino_JSON JSONArray` flash	%	`Arduino_JSON JSONArray` RAM for global variables	%	`M95M01 M95M01_test` flash	%	`M95M01 M95M01_test` RAM for global variables	%	`ArduinoBLE Central/LedControl` flash	%	`ArduinoBLE Central/LedControl` RAM for global variables	%	`ArduinoBLE Central/Scan` flash	%	`ArduinoBLE Central/Scan` RAM for global variables	%	`ArduinoBLE Peripheral/Advertising/EnhancedAdvertising` flash	%	`ArduinoBLE Peripheral/Advertising/EnhancedAdvertising` RAM for global variables	%	`ArduinoBLE Peripheral/ButtonLED` flash	%	`ArduinoBLE Peripheral/ButtonLED` RAM for global variables	%	`Arduino_RouterBridge client` flash	%	`Arduino_RouterBridge client` RAM for global variables	%	`Arduino_RouterBridge hci` flash	%	`Arduino_RouterBridge hci` RAM for global variables	%	`Arduino_RouterBridge monitor` flash	%	`Arduino_RouterBridge monitor` RAM for global variables	%	`Arduino_RouterBridge server` flash	%	`Arduino_RouterBridge server` RAM for global variables	%	`Arduino_RouterBridge udp_ntp_client` flash	%	`Arduino_RouterBridge udp_ntp_client` RAM for global variables	%	`Arduino_RPClite rpc_lite_client` flash	%	`Arduino_RPClite rpc_lite_client` RAM for global variables	%	`Arduino_RPClite rpc_lite_server` flash	%	`Arduino_RPClite rpc_lite_server` RAM for global variables	%	`Zephyr_SDRAM SDRAM_operations` flash	%	`Zephyr_SDRAM SDRAM_operations` RAM for global variables	%	`WiFi WiFiWebClient` flash	%	`WiFi WiFiWebClient` RAM for global variables	%	`WiFi WiFiWebClientTLS` flash	%	`WiFi WiFiWebClientTLS` RAM for global variables	%	`Camera CameraCaptureRawBytes` flash	%	`Camera CameraCaptureRawBytes` RAM for global variables	%	`Storage FlashFormat` flash	%	`Storage FlashFormat` RAM for global variables	%	`Storage ListFiles` flash	%	`Storage ListFiles` RAM for global variables	%	`Storage PartitionInfo` flash	%	`Storage PartitionInfo` RAM for global variables	%	`Arduino_SecureElement SelfSignedCertificate` flash	%	`Arduino_SecureElement SelfSignedCertificate` RAM for global variables	%	`Arduino_SecureElement RandomNumber` flash	%	`Arduino_SecureElement RandomNumber` RAM for global variables	%	`Arduino_SecureElement ConfigurationLocking` flash	%	`Arduino_SecureElement ConfigurationLocking` RAM for global variables	%	`Arduino_SecureElement CertificateSigningRequest` flash	%	`Arduino_SecureElement CertificateSigningRequest` RAM for global variables	%	`Arduino_GigaDisplayTouch Touch_Polling` flash	%	`Arduino_GigaDisplayTouch Touch_Polling` RAM for global variables	%	`Arduino_GigaDisplayTouch Touch_IRQ` flash	%	`Arduino_GigaDisplayTouch Touch_IRQ` RAM for global variables	%	`Arduino_Video ArduinoLogoDrawing` flash	%	`Arduino_Video ArduinoLogoDrawing` RAM for global variables	%	`Arduino_Video ArduinoLogo` flash	%	`Arduino_Video ArduinoLogo` RAM for global variables	%	`Arduino_Video LVGLDemo` flash	%	`Arduino_Video LVGLDemo` RAM for global variables	%	`ArduinoCore-zephyr/libraries/Camera/examples/CameraCaptureRawBytes` flash	%	`ArduinoCore-zephyr/libraries/Camera/examples/CameraCaptureRawBytes` RAM for global variables	%	`Ethernet UDPSendReceiveString` flash	%	`Ethernet UDPSendReceiveString` RAM for global variables	%	`Ethernet WebServer` flash	%	`Ethernet WebServer` RAM for global variables	%	`Ethernet WebClient` flash	%	`Ethernet WebClient` RAM for global variables	%	`Ethernet TelnetClient` flash	%	`Ethernet TelnetClient` RAM for global variables	%	`Ethernet AdvancedChatServer` flash	%	`Ethernet AdvancedChatServer` RAM for global variables	%	`Ethernet UdpNtpClient` flash	%	`Ethernet UdpNtpClient` RAM for global variables	%	`Ethernet LinkStatus` flash	%	`Ethernet LinkStatus` RAM for global variables	%	`Ethernet WebClientRepeating` flash	%	`Ethernet WebClientRepeating` RAM for global variables	%
`arduino:zephyr:unoq:link_mode=dynamic`	N/A	N/A	N/A	N/A	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0
`arduino:zephyr:unoq:link_mode=static`	N/A	N/A	N/A	N/A	16	0.0	656	0.32	16	0.0	656	0.32	16	0.0	656	0.32	16	0.0	-368	-0.06	16	0.0	656	0.09	16	0.0	-368	-0.06	16	0.0	-368	-0.1	16	0.0	-368	-0.1	16	0.0	656	0.32	16	0.0	656	0.32	16	0.0	656	0.32	16	0.0	656	0.32	16	0.0	656	0.32	16	0.0	656	0.32	16	0.0	656	0.32	16	0.0	656	0.32	16	0.0	-368	-0.08	16	0.0	656	0.15	16	0.0	656	0.15	16	0.0	656	0.15	16	0.0	656	0.15	16	0.0	-368	-0.13	16	0.0	656	0.32	16	0.0	656	0.32	16	0.0	656	0.32	16	0.0	656	0.1	16	0.0	656	0.32	16	0.0	-368	-0.08
`arduino:zephyr_contrib:ek_ra8d1:link_mode=dynamic`																																									0	0.0	0	0.0
`arduino:zephyr_contrib:ek_ra8d1:link_mode=static`																																									0	0.0	0	0.0
`arduino:zephyr_contrib:frdm_mcxn947:link_mode=dynamic`																																									0	0.0	0	0.0
`arduino:zephyr_contrib:frdm_mcxn947:link_mode=static`																																									0	0.0	0	0.0
`arduino:zephyr_contrib:frdm_rw612:link_mode=dynamic`																																									0	0.0	0	0.0
`arduino:zephyr_contrib:frdm_rw612:link_mode=static`																																									0	0.0	0	0.0
`arduino:zephyr_main:giga:link_mode=dynamic`	N/A	N/A	N/A	N/A	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0													244	0.0	16	0.0	244	0.0	16	0.0	244	0.01	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0																													244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0
`arduino:zephyr_main:giga:link_mode=static`	N/A	N/A	N/A	N/A	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0													16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0																													16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0
`arduino:zephyr_main:nano33ble:link_mode=dynamic`	N/A	N/A	N/A	N/A	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0																									0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
`arduino:zephyr_main:nano33ble:link_mode=static`	N/A	N/A	N/A	N/A	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0																									0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
`arduino:zephyr_main:nano_matter:link_mode=dynamic`	N/A	N/A	N/A	N/A																																					0	0.0	0	0.0	0	0.0	0	0.0					0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
`arduino:zephyr_main:nano_matter:link_mode=static`	N/A	N/A	N/A	N/A																																					0	0.0	0	0.0	0	0.0	0	0.0					0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
`arduino:zephyr_main:nicla_sense:link_mode=dynamic`	N/A	N/A	N/A	N/A	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0																									0	0.0	0	0.0	0	0.0	0	0.0					0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
`arduino:zephyr_main:nicla_sense:link_mode=static`	N/A	N/A	N/A	N/A	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0																									0	0.0	0	0.0	0	0.0	0	0.0					0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
`arduino:zephyr_main:nicla_vision:link_mode=dynamic`	N/A	N/A	N/A	N/A	244	0.01	16	0.0	244	0.01	16	0.0	244	0.01	16	0.0																									244	0.01	16	0.0	244	0.01	16	0.0	244	0.01	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0																													244	0.01	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0					244	0.0	16	0.0	244	0.01	16	0.0	244	0.01	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0																					N/A	N/A	N/A	N/A
`arduino:zephyr_main:nicla_vision:link_mode=static`	N/A	N/A	N/A	N/A	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0																									16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0																													16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0					16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0																					N/A	N/A	N/A	N/A
`arduino:zephyr_main:opta:link_mode=dynamic`	N/A	N/A	N/A	N/A	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0																									0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0					0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0																																	0	0.0	0	0.0	0	0.0	0	0.0					0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0																									0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
`arduino:zephyr_main:opta:link_mode=static`	N/A	N/A	N/A	N/A	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0																									0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0					0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0																																	0	0.0	0	0.0	0	0.0	0	0.0					0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0																									0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
`arduino:zephyr_main:portentac33:link_mode=dynamic`	N/A	N/A	N/A	N/A													0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0													0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0																													0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0					0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0																									0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
`arduino:zephyr_main:portentac33:link_mode=static`	N/A	N/A	N/A	N/A													0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0													0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0																													0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0					0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0																									0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0	0	0.0
`arduino:zephyr_main:portentah7:link_mode=dynamic`	N/A	N/A	N/A	N/A	244	0.01	16	0.0	244	0.01	16	0.0	244	0.01	16	0.0	228	0.0	16	0.0	228	0.0	16	0.0	228	0.0	16	0.0													244	0.01	16	0.0	244	0.01	16	0.0	244	0.01	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0																													244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.01	16	0.0	244	0.0	16	0.0	244	0.01	16	0.0	244	0.01	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0									244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0					244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0	244	0.0	16	0.0
`arduino:zephyr_main:portentah7:link_mode=static`	N/A	N/A	N/A	N/A	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0													16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0																													16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0									16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0					16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0	16	0.0	0	0.0

Click for full report CSV

Board,ArduinoCore-zephyr/libraries/CPUTemperature/examples/CPUTemperature<br>flash,%,ArduinoCore-zephyr/libraries/CPUTemperature/examples/CPUTemperature<br>RAM for global variables,%,RTC AlarmRTC<br>flash,%,RTC AlarmRTC<br>RAM for global variables,%,RTC SimpleRTC<br>flash,%,RTC SimpleRTC<br>RAM for global variables,%,RTC CalibrationRTC<br>flash,%,RTC CalibrationRTC<br>RAM for global variables,%,CAN CANWrite<br>flash,%,CAN CANWrite<br>RAM for global variables,%,CAN CANEvent<br>flash,%,CAN CANEvent<br>RAM for global variables,%,CAN CANRead<br>flash,%,CAN CANRead<br>RAM for global variables,%,Arduino_LED_Matrix Basic<br>flash,%,Arduino_LED_Matrix Basic<br>RAM for global variables,%,Arduino_LED_Matrix Reflash_Bootanimation<br>flash,%,Arduino_LED_Matrix Reflash_Bootanimation<br>RAM for global variables,%,Arduino_LED_Matrix Video<br>flash,%,Arduino_LED_Matrix Video<br>RAM for global variables,%,arduino-examples 01.Basics/Blink<br>flash,%,arduino-examples 01.Basics/Blink<br>RAM for global variables,%,arduino-examples 01.Basics/AnalogReadSerial<br>flash,%,arduino-examples 01.Basics/AnalogReadSerial<br>RAM for global variables,%,arduino-examples 04.Communication/SerialPassthrough<br>flash,%,arduino-examples 04.Communication/SerialPassthrough<br>RAM for global variables,%,Arduino_JSON JSONValueExtractor<br>flash,%,Arduino_JSON JSONValueExtractor<br>RAM for global variables,%,Arduino_JSON JSONObject<br>flash,%,Arduino_JSON JSONObject<br>RAM for global variables,%,Arduino_JSON JSONKitchenSink<br>flash,%,Arduino_JSON JSONKitchenSink<br>RAM for global variables,%,Arduino_JSON JSONArray<br>flash,%,Arduino_JSON JSONArray<br>RAM for global variables,%,M95M01 M95M01_test<br>flash,%,M95M01 M95M01_test<br>RAM for global variables,%,ArduinoBLE Central/LedControl<br>flash,%,ArduinoBLE Central/LedControl<br>RAM for global variables,%,ArduinoBLE Central/Scan<br>flash,%,ArduinoBLE Central/Scan<br>RAM for global variables,%,ArduinoBLE Peripheral/Advertising/EnhancedAdvertising<br>flash,%,ArduinoBLE Peripheral/Advertising/EnhancedAdvertising<br>RAM for global variables,%,ArduinoBLE Peripheral/ButtonLED<br>flash,%,ArduinoBLE Peripheral/ButtonLED<br>RAM for global variables,%,Arduino_RouterBridge client<br>flash,%,Arduino_RouterBridge client<br>RAM for global variables,%,Arduino_RouterBridge hci<br>flash,%,Arduino_RouterBridge hci<br>RAM for global variables,%,Arduino_RouterBridge monitor<br>flash,%,Arduino_RouterBridge monitor<br>RAM for global variables,%,Arduino_RouterBridge server<br>flash,%,Arduino_RouterBridge server<br>RAM for global variables,%,Arduino_RouterBridge udp_ntp_client<br>flash,%,Arduino_RouterBridge udp_ntp_client<br>RAM for global variables,%,Arduino_RPClite rpc_lite_client<br>flash,%,Arduino_RPClite rpc_lite_client<br>RAM for global variables,%,Arduino_RPClite rpc_lite_server<br>flash,%,Arduino_RPClite rpc_lite_server<br>RAM for global variables,%,Zephyr_SDRAM SDRAM_operations<br>flash,%,Zephyr_SDRAM SDRAM_operations<br>RAM for global variables,%,WiFi WiFiWebClient<br>flash,%,WiFi WiFiWebClient<br>RAM for global variables,%,WiFi WiFiWebClientTLS<br>flash,%,WiFi WiFiWebClientTLS<br>RAM for global variables,%,Camera CameraCaptureRawBytes<br>flash,%,Camera CameraCaptureRawBytes<br>RAM for global variables,%,Storage FlashFormat<br>flash,%,Storage FlashFormat<br>RAM for global variables,%,Storage ListFiles<br>flash,%,Storage ListFiles<br>RAM for global variables,%,Storage PartitionInfo<br>flash,%,Storage PartitionInfo<br>RAM for global variables,%,Arduino_SecureElement SelfSignedCertificate<br>flash,%,Arduino_SecureElement SelfSignedCertificate<br>RAM for global variables,%,Arduino_SecureElement RandomNumber<br>flash,%,Arduino_SecureElement RandomNumber<br>RAM for global variables,%,Arduino_SecureElement ConfigurationLocking<br>flash,%,Arduino_SecureElement ConfigurationLocking<br>RAM for global variables,%,Arduino_SecureElement CertificateSigningRequest<br>flash,%,Arduino_SecureElement CertificateSigningRequest<br>RAM for global variables,%,Arduino_GigaDisplayTouch Touch_Polling<br>flash,%,Arduino_GigaDisplayTouch Touch_Polling<br>RAM for global variables,%,Arduino_GigaDisplayTouch Touch_IRQ<br>flash,%,Arduino_GigaDisplayTouch Touch_IRQ<br>RAM for global variables,%,Arduino_Video ArduinoLogoDrawing<br>flash,%,Arduino_Video ArduinoLogoDrawing<br>RAM for global variables,%,Arduino_Video ArduinoLogo<br>flash,%,Arduino_Video ArduinoLogo<br>RAM for global variables,%,Arduino_Video LVGLDemo<br>flash,%,Arduino_Video LVGLDemo<br>RAM for global variables,%,ArduinoCore-zephyr/libraries/Camera/examples/CameraCaptureRawBytes<br>flash,%,ArduinoCore-zephyr/libraries/Camera/examples/CameraCaptureRawBytes<br>RAM for global variables,%,Ethernet UDPSendReceiveString<br>flash,%,Ethernet UDPSendReceiveString<br>RAM for global variables,%,Ethernet WebServer<br>flash,%,Ethernet WebServer<br>RAM for global variables,%,Ethernet WebClient<br>flash,%,Ethernet WebClient<br>RAM for global variables,%,Ethernet TelnetClient<br>flash,%,Ethernet TelnetClient<br>RAM for global variables,%,Ethernet AdvancedChatServer<br>flash,%,Ethernet AdvancedChatServer<br>RAM for global variables,%,Ethernet UdpNtpClient<br>flash,%,Ethernet UdpNtpClient<br>RAM for global variables,%,Ethernet LinkStatus<br>flash,%,Ethernet LinkStatus<br>RAM for global variables,%,Ethernet WebClientRepeating<br>flash,%,Ethernet WebClientRepeating<br>RAM for global variables,%
arduino:zephyr:unoq:link_mode=dynamic,N/A,N/A,N/A,N/A,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0
arduino:zephyr:unoq:link_mode=static,N/A,N/A,N/A,N/A,16,0.0,656,0.32,16,0.0,656,0.32,16,0.0,656,0.32,16,0.0,-368,-0.06,16,0.0,656,0.09,16,0.0,-368,-0.06,16,0.0,-368,-0.1,16,0.0,-368,-0.1,16,0.0,656,0.32,16,0.0,656,0.32,16,0.0,656,0.32,16,0.0,656,0.32,16,0.0,656,0.32,16,0.0,656,0.32,16,0.0,656,0.32,16,0.0,656,0.32,16,0.0,-368,-0.08,16,0.0,656,0.15,16,0.0,656,0.15,16,0.0,656,0.15,16,0.0,656,0.15,16,0.0,-368,-0.13,16,0.0,656,0.32,16,0.0,656,0.32,16,0.0,656,0.32,16,0.0,656,0.1,16,0.0,656,0.32,16,0.0,-368,-0.08
arduino:zephyr_contrib:ek_ra8d1:link_mode=dynamic,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
arduino:zephyr_contrib:ek_ra8d1:link_mode=static,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
arduino:zephyr_contrib:frdm_mcxn947:link_mode=dynamic,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
arduino:zephyr_contrib:frdm_mcxn947:link_mode=static,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
arduino:zephyr_contrib:frdm_rw612:link_mode=dynamic,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
arduino:zephyr_contrib:frdm_rw612:link_mode=static,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
arduino:zephyr_main:giga:link_mode=dynamic,N/A,N/A,N/A,N/A,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,,,,,,,,,,,,,244,0.0,16,0.0,244,0.0,16,0.0,244,0.01,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0
arduino:zephyr_main:giga:link_mode=static,N/A,N/A,N/A,N/A,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,,,,,,,,,,,,,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0
arduino:zephyr_main:nano33ble:link_mode=dynamic,N/A,N/A,N/A,N/A,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
arduino:zephyr_main:nano33ble:link_mode=static,N/A,N/A,N/A,N/A,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
arduino:zephyr_main:nano_matter:link_mode=dynamic,N/A,N/A,N/A,N/A,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
arduino:zephyr_main:nano_matter:link_mode=static,N/A,N/A,N/A,N/A,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
arduino:zephyr_main:nicla_sense:link_mode=dynamic,N/A,N/A,N/A,N/A,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
arduino:zephyr_main:nicla_sense:link_mode=static,N/A,N/A,N/A,N/A,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
arduino:zephyr_main:nicla_vision:link_mode=dynamic,N/A,N/A,N/A,N/A,244,0.01,16,0.0,244,0.01,16,0.0,244,0.01,16,0.0,,,,,,,,,,,,,,,,,,,,,,,,,244,0.01,16,0.0,244,0.01,16,0.0,244,0.01,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,244,0.01,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,,,,,244,0.0,16,0.0,244,0.01,16,0.0,244,0.01,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,,,,,,,,,,,,,,,,,,,,,N/A,N/A,N/A,N/A
arduino:zephyr_main:nicla_vision:link_mode=static,N/A,N/A,N/A,N/A,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,,,,,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,N/A,N/A,N/A,N/A
arduino:zephyr_main:opta:link_mode=dynamic,N/A,N/A,N/A,N/A,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0
arduino:zephyr_main:opta:link_mode=static,N/A,N/A,N/A,N/A,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0
arduino:zephyr_main:portentac33:link_mode=dynamic,N/A,N/A,N/A,N/A,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0
arduino:zephyr_main:portentac33:link_mode=static,N/A,N/A,N/A,N/A,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0,0,0.0
arduino:zephyr_main:portentah7:link_mode=dynamic,N/A,N/A,N/A,N/A,244,0.01,16,0.0,244,0.01,16,0.0,244,0.01,16,0.0,228,0.0,16,0.0,228,0.0,16,0.0,228,0.0,16,0.0,,,,,,,,,,,,,244,0.01,16,0.0,244,0.01,16,0.0,244,0.01,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.01,16,0.0,244,0.0,16,0.0,244,0.01,16,0.0,244,0.01,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,,,,,,,,,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,,,,,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0,244,0.0,16,0.0
arduino:zephyr_main:portentah7:link_mode=static,N/A,N/A,N/A,N/A,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,,,,,,,,,,,,,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,,,,,,,,,,,,,,,,,,,,,,,,,,,,,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,,,,,,,,,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,,,,,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0,16,0.0,0,0.0

KurtE · 2026-06-19T13:12:36Z

@facchinm @per1234 @pennam

Yesterday, I updated this PR again. I removed the requirement for needing changes at the zephyr level. Instead
I updated the device tree data to now mark, the die_temp objects as deferred-init as well, and then had the
code that retrieved the temperature do the same thing as other objects to initialize the objects it depends on.

I also split out the test code to retrieve this information, to it's own library: CPUTemperature, which I added as another
commit on this as part of the libraries... Not sure sure in the end it would go there, or API added to core or independent library, but all of it is currently part of this PR, including the test sketch that retrieves and prints it out.

/*
 * Copyright (c) 2026 KurtE
 * SPDX-License-Identifier: Apache-2.0
 */
#include <CPUTemperature.h>

void setup() {
  Serial.begin(115200);

  while (!Serial && millis() < 5000) {
  }
}

void loop() {
  double temp = CPUTemperature();
  Serial.print("CPU Temp C:");
  Serial.print(temp, 2);
  if (!isnan(temp)) {
    Serial.print(" F:");
    Serial.print(temp * 1.8 + 32.0, 2);
  }
  Serial.println();
  delay(5000);
}

I have, updated and tested it on: Uno Q, Giga, Portenta H7, Nicla Vision.
Output from startup of Portenta H7

CPU Temp C:37.22 F:98.99
CPU Temp C:40.04 F:104.07
CPU Temp C:48.51 F:119.32
CPU Temp C:41.29 F:106.33
CPU Temp C:42.24 F:108.02
CPU Temp C:42.55 F:108.59

Not sure if there are any other Arduino Zephyr boards that have the die_temp support currently built in
at a lower level? Portenta C33 hardware manual suggests that there is possibility, but did not find any of the
frame work... But if others do support it, those could be added later.

mjs513 · 2026-06-19T21:09:51Z

@KurtE

Just rebuilt the core with this PR incorporated along with analog frequency updated both the IDE and on the Q4. Ran your CPU temp app that you posted and all seem to be working:

 Qualcomm C:36.80 F:98.24 STM32 C:32.47 F:90.45
 Qualcomm C:35.60 F:96.08 STM32 C:32.14 F:89.85
 Qualcomm C:35.30 F:95.54 STM32 C:32.47 F:90.45
 Qualcomm C:35.30 F:95.54 STM32 C:32.47 F:90.45
 Qualcomm C:36.20 F:97.16 STM32 C:32.47 F:90.45

KurtE marked this pull request as ready for review June 17, 2026 13:18

KurtE force-pushed the die_temp branch from 56302d1 to d944b87 Compare June 18, 2026 14:19

KurtE added 2 commits June 18, 2026 09:42

variants: mark die_temp deferred-init

fee1165

To correspond to the marking of the underlying ADC modules

KurtE force-pushed the die_temp branch 3 times, most recently from 07f6242 to a8b7b36 Compare June 18, 2026 21:56

per1234 added the enhancement New feature or request label Jun 18, 2026

KurtE force-pushed the die_temp branch from a8b7b36 to 473958d Compare June 18, 2026 22:03

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