Tutorial: Mastering Zephyr Driver Development
summary
Shows exact claims and code: Zephyr driver flow uses Devicetree + Kconfig to generate compile‑time C headers, instance‑based DT macros and new dt_spec helpers; the repo implements a fingerprint sensor driver via UART with interrupt‑driven message queues and exposes custom channels/attributes; it adds a servo‑driven lock using PWM + ADC feedback and a lock API with syscall hooks; demos an out‑of‑tree app tying fingerprint trigger to Bluetooth control; links and sample app are on GitHub.
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chapters (40)
- 0:00Start
- 0:16Outline
- 2:43Zephyr Device Model
- 4:59Predefined Data Types
- 7:19Bindings
- 11:08Note Identifiers
- 11:53Aliases
- 16:47Zephyr Devices
- 19:59Device Driver Example
- 25:30Device Get Binding
- 26:02Implementing a Real Sensor Driver
- 26:59Serial Communications
- 29:50Enrolling
- 31:25Sensor Triggers
- 32:45File Tree Layout
- 34:01Bindings of the Sensor
- 40:07Driver Highlights
- 47:51Uart Callback Handler
- 51:35How Do I Access this Device from an Application Perspective
- 53:12Verify a Fingerprint
- 53:57Fingerprint Verification
- 1:03:24Log Api Design
- 1:04:37The File Tree
- 1:06:01Api Operations
- 1:06:55Syscall Support
- 1:08:22Servo Driven Lock
- 1:09:26Analog Feedback
- 1:10:29Pwm Specifier
- 1:11:00Adc Api
- 1:16:41Dt Spec Helper
- 1:18:33Adcd Spec
- 1:21:06How this Api Is Used
- 1:21:30Configure the Adc in Device
- 1:22:34Lock Servo
- 1:24:28Demo
- 1:31:25Conclusions
- 1:31:48Instances of a Device
- 1:39:25Add a New Sensor Api Call
- 1:40:24Check if the Device Is Null
- 1:44:43Network Drivers
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