Chang Jw Email & Phone Number

台灣 台北市

• Firmware development on battery based products including Battery Backup Unit, Power bank, battery charger cradle and Energy Storage Systems.
• Develop custom Battery Management System(BMS) for battery monitoring, capacity calculation, charging/discharging control, protections, external device communications and low power modes.
• Develop Bootloader code, s19/Hex/bin file converting program and CRC verification process for firmware update via I2C, UART protocols.
• Develop USB Virtual… Show more
• Develop USB Virtual COM to I2C or CAN communication boards, TI Gauge data quick writing tools.
• Develop Windows applications using Python + Qt to control equipments through RS-232、GPIB、VCOM interface, to achieve automatic test, host simulation and production line examinations.

台灣 台北市

• Firmware development on sensors and lighting control products, including masters, movement sensors, light sensors and control panels with DALI (Digital Addressable Lighting Interface).
• Establish communication formats for Master and each DALI devices on DALI bus, Master and smartphone/tablet via Bluetooth module.
• Develop capacitive touch functions for control panel products include touch keys and rotary touch area.
• Develop Bootloader for Over-the-Air firmware update.
• Use… Show more
• Use MCUs include STM8S and STM8L series for UART, I2C, ADC, PWM, 3-Wire interface, Infrared, and I/O bit-banging I2C and PWM. Show less

台灣 台北市

• Co-work with ODM, Taiwan Development Center and US HQ RDs for commercial Notebooks BIOS and EC(Embedded Controller) firmware development and release.
• Use ARM Coretex-M4 MCUs for EC firmware development include keyboard, touchpad, battery, fan control, and BIOS/CPU communications.
• Work with IC vender to verify and debug USB Type-C PD/Thunderbolt functions, and Dual-accelerometer calculation of panel angel.
• Resolve customer feedback issues of MP product.

台灣 台北市

• Responsible for TM4C EC(Embedded Controller) with sensor hub solution on Notebook products.
• Support ODM customer to implement EC functions with TI-RTOS.
• EC + Sensor Hub WHCK on Windows 8.
• Use msp430 for Sensor Hub function development on tablet product.
• Develop Windows applications with BCB for EC/Sensor Hub firmware update, EC RAM read/write and bin file boot vector modification.

台灣 台北市

• EC(Embedded Controller) firmware development on Notebook and All-in-One(AIO) products.
• Handle communications between EC and BIOS, Intel/AMD CPUs.
• Develop EC functions include keyboard, touchpad, LED, power on/off sequence, LCD backlight, fan, smart battery, smart charger control and protection.
• Develop Windows application with BCB for GPIO configuration, battery information monitoring and serial log analysis.
• Develop and maintain firmware of new products and MP products.

台灣 新竹縣市

• Responsible for CMP(Chemical-Mechanical Planarization) equipment maintenance and issue resolving.
• Increase the yield of equipment.
• Increase equipment efficiency and prevent potential problems.

碩士, 電機所

學士, Mechanical Engineering