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drivers: sensor: Add driver for MAX32664C
- Add example project for MAX32664C Closes #93473 Signed-off-by: Daniel Kampert <DanielKampert@kampis-elektroecke.de>
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‎samples/sensor/max32664/CMakeLists.txt

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# SPDX-License-Identifier: Apache-2.0
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cmake_minimum_required(VERSION 3.20.0)
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find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
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project(veml6031)
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target_sources(app PRIVATE src/main.c)

‎samples/sensor/max32664/README.rst

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.. zephyr:code-sample:: max32664c
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:name: MAX32664C + MAX86141 Sensor Hub
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:relevant-api: sensor_interface
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Get health data from a MAX32664C and a MAX86141 sensor (polling mode) and publish them via Bluetooth.
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NOTE: This example requires sensor hub firmware 30.13.31!
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Overview
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********
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This sample measures the heart rate and the blood oxygen saturation on a wrist and use the Zephyr
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Heartrate service to publish them via Bluetooth. It uses the MAX32664C sensor to control the MAX86141 sensor.
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Requirements
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************
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This sample uses the MAX32664 sensor controlled using the I2C30 interface at
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the nRF54L15-DK board.
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References
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**********
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- MAX32664C: https://www.analog.com/en/products/max32664.html
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Building and Running
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********************
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This project outputs sensor data to the console. It requires a MAX32664C
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sensor to be connected to the desired board. An additional MAX86141 sensor
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must be connected to the MAX32664C to provide the sensor data for the algorithms.
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.. zephyr-app-commands::
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:zephyr-app: samples/sensor/max32664/
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:goals: build flash
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Sample Output
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=============
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.. code-block:: console
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Test all attributes for a good guess of attribute usage away of saturation.
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Light (lux): 6179 ALS (raw): 7100 IR (raw): 27 it: 0 div4: 0 gain: 0 --
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Light (lux): 1500 ALS (raw): 3447 IR (raw): 34 it: 0 div4: 0 gain: 1 --
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Light (lux): 4664 ALS (raw): 3537 IR (raw): 17 it: 0 div4: 0 gain: 2 --
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Light (lux): 5601 ALS (raw): 3218 IR (raw): 13 it: 0 div4: 0 gain: 3 --
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Light (lux): 1302 ALS (raw): 374 IR (raw): 5 it: 0 div4: 1 gain: 0 --
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Light (lux): 5584 ALS (raw): 3208 IR (raw): 11 it: 0 div4: 1 gain: 1 --
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Light (lux): 5285 ALS (raw): 1002 IR (raw): 3 it: 0 div4: 1 gain: 2 --
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Light (lux): 1455 ALS (raw): 209 IR (raw): 2 it: 0 div4: 1 gain: 3 --
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Light (lux): 4925 ALS (raw): 11317 IR (raw): 50 it: 1 div4: 0 gain: 0 --
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Light (lux): 3916 ALS (raw): 17999 IR (raw): 90 it: 1 div4: 0 gain: 1 --
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Light (lux): 2796 ALS (raw): 4299 IR (raw): 28 it: 1 div4: 0 gain: 2 --
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Light (lux): 5178 ALS (raw): 5950 IR (raw): 26 it: 1 div4: 0 gain: 3 --
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Light (lux): 4339 ALS (raw): 2493 IR (raw): 12 it: 1 div4: 1 gain: 0 --
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Light (lux): 2186 ALS (raw): 2512 IR (raw): 19 it: 1 div4: 1 gain: 1 --
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Light (lux): 5578 ALS (raw): 2115 IR (raw): 8 it: 1 div4: 1 gain: 2 --
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Light (lux): 4494 ALS (raw): 1291 IR (raw): 6 it: 1 div4: 1 gain: 3 --
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Light (lux): 3675 ALS (raw): 16892 IR (raw): 93 it: 2 div4: 0 gain: 0 --
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Light (lux): 3209 ALS (raw): 29495 IR (raw): 172 it: 2 div4: 0 gain: 1 --
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Light (lux): 4520 ALS (raw): 13710 IR (raw): 66 it: 2 div4: 0 gain: 2 --
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Light (lux): 4215 ALS (raw): 9687 IR (raw): 49 it: 2 div4: 0 gain: 3 --
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Light (lux): 3492 ALS (raw): 4013 IR (raw): 22 it: 2 div4: 1 gain: 0 --
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Light (lux): 3786 ALS (raw): 8700 IR (raw): 43 it: 2 div4: 1 gain: 1 --
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Light (lux): 4735 ALS (raw): 3591 IR (raw): 15 it: 2 div4: 1 gain: 2 --
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Light (lux): 3779 ALS (raw): 2171 IR (raw): 11 it: 2 div4: 1 gain: 3 --
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Light (lux): 3848 ALS (raw): 35376 IR (raw): 188 it: 3 div4: 0 gain: 0 --
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Light (lux): 3565 ALS (raw): 65535 IR (raw): 359 it: 3 div4: 0 gain: 1 -- OVERFLOW
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Light (lux): 4333 ALS (raw): 26297 IR (raw): 130 it: 3 div4: 0 gain: 2 --
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Light (lux): 3576 ALS (raw): 16435 IR (raw): 93 it: 3 div4: 0 gain: 3 --
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Light (lux): 4409 ALS (raw): 10133 IR (raw): 47 it: 3 div4: 1 gain: 0 --
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Light (lux): 3395 ALS (raw): 15606 IR (raw): 85 it: 3 div4: 1 gain: 1 --
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Light (lux): 4519 ALS (raw): 6854 IR (raw): 31 it: 3 div4: 1 gain: 2 --
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Light (lux): 3694 ALS (raw): 4245 IR (raw): 23 it: 3 div4: 1 gain: 3 --
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Light (lux): 3565 ALS (raw): 65535 IR (raw): 376 it: 4 div4: 0 gain: 0 -- OVERFLOW
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Light (lux): 1782 ALS (raw): 65535 IR (raw): 723 it: 4 div4: 0 gain: 1 -- OVERFLOW
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Light (lux): 3992 ALS (raw): 48450 IR (raw): 253 it: 4 div4: 0 gain: 2 --
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Light (lux): 3943 ALS (raw): 36247 IR (raw): 191 it: 4 div4: 0 gain: 3 --
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Light (lux): 3970 ALS (raw): 18248 IR (raw): 92 it: 4 div4: 1 gain: 0 --
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Light (lux): 3814 ALS (raw): 35064 IR (raw): 176 it: 4 div4: 1 gain: 1 --
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Light (lux): 4082 ALS (raw): 12381 IR (raw): 62 it: 4 div4: 1 gain: 2 --
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Light (lux): 4052 ALS (raw): 9311 IR (raw): 47 it: 4 div4: 1 gain: 3 --
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[...]
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Test finished.

‎samples/sensor/max32664/boards/nrf54l15dk_nrf54l15_cpuapp.overlay

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&pinctrl {
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i2c30_default: i2c30_default {
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group1 {
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psels = <NRF_PSEL(TWIM_SDA, 0, 4)>,
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<NRF_PSEL(TWIM_SCL, 0, 3)>;
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bias-pull-up;
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};
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};
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i2c30_sleep: i2c30_sleep {
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group1 {
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psels = <NRF_PSEL(TWIM_SDA, 0, 4)>,
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<NRF_PSEL(TWIM_SCL, 0, 3)>;
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low-power-enable;
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};
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};
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};
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/ {
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aliases {
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sensor = &biometric_hub;
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};
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};
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&led0 {
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gpios = <&gpio2 6 GPIO_ACTIVE_HIGH>;
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label = "Green LED 0";
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};
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&i2c30 {
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compatible = "nordic,nrf-twim";
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status = "okay";
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clock-frequency = <I2C_BITRATE_FAST>;
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zephyr,flash-buf-max-size = <8250>;
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pinctrl-0 = <&i2c30_default>;
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pinctrl-1 = <&i2c30_sleep>;
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pinctrl-names = "default", "sleep";
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biometric_hub: max32664c@55 {
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compatible = "maxim,max32664c";
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reg = <0x55>;
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status = "okay";
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reset-gpios = <&gpio2 0 GPIO_ACTIVE_HIGH>;
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mfio-gpios = <&gpio2 1 GPIO_ACTIVE_HIGH>;
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motion-time = <200>;
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motion-threshold = <500>;
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hr-config = [00 11];
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spo2-config = [30 20];
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};
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};
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&gpio2 {
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status = "okay";
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vled {
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gpio-hog;
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gpios = <6 GPIO_ACTIVE_HIGH>;
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/* low output to select on-board codec control */
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output-high;
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};
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};
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&dppic10 {
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status = "okay";
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};
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&ppib11 {
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status = "okay";
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};
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&ppib21 {
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status = "okay";
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};
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&dppic20 {
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status = "okay";
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};
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&ppib22 {
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status = "okay";
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};
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&ppib30 {
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status = "okay";
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};
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&dppic30 {
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status = "okay";
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};

‎samples/sensor/max32664/prj.conf

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CONFIG_CLOCK_CONTROL=y
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CONFIG_SENSOR=y
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CONFIG_LOG=y
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CONFIG_LOG_PRINTK=y
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CONFIG_I2C=y
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CONFIG_HEAP_MEM_POOL_SIZE=16384
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CONFIG_BT=y
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CONFIG_BT_SMP=y
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CONFIG_BT_PERIPHERAL=y
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CONFIG_BT_DIS=y
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CONFIG_BT_DIS_PNP=n
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CONFIG_BT_BAS=y
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CONFIG_BT_HRS=y
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CONFIG_BT_DEVICE_NAME="Zephyr Heartrate Sensor"
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CONFIG_BT_DEVICE_APPEARANCE=833
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CONFIG_DEBUG_OPTIMIZATIONS=y
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CONFIG_USE_SEGGER_RTT=y
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CONFIG_LOG_BACKEND_RTT=y
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CONFIG_LOG_BACKEND_RTT_MODE_BLOCK=y
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CONFIG_LOG_BUFFER_SIZE=4096
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CONFIG_LOG_BACKEND_RTT_OUTPUT_BUFFER_SIZE=128
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CONFIG_LOG_BLOCK_IN_THREAD=y
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CONFIG_MAXIM_MAX32664C_LOG_LEVEL_DBG=y
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CONFIG_MAX32664C_USE_MAX86141=y
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CONFIG_MAX32664C_ACC_ID=0x43

‎samples/sensor/max32664/sample.yaml

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sample:
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name: MAX32664C + MAX86141 Sensor Hub Sample
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tests:
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sample.sensor.max32664c:
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harness: sensor
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platform_allow: nrf54l15dk/nrf54l15/cpuapp
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integration_platforms:
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- nrf54l15dk/nrf54l15/cpuapp
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tags: sensors
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filter: dt_compat_enabled("maxim,max32664c")

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