SLAU857A May   2021  – July 2021 MSP430FR2476 , MSP430FR2512 , MSP430FR2522 , MSP430FR2532 , MSP430FR2533 , MSP430FR2632 , MSP430FR2633 , MSP430FR2672 , MSP430FR2673 , MSP430FR2675 , MSP430FR2676

 

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5.6.5 Test, Production, and Programming

A successfully designed capacitive touch sensing system requires the use of prototype equipment for system verification. TI recommends building 20 to 50 devices for field testing. If the system meets the performance requirements, the design can shift to mass production. If the system does not meet the performance requirements, it is necessary to adjust the performance expectations or redesign the software and hardware, or even the mechanical structure design.

Due to the uncertainty of the human body's capacitance to ground, which is different from the thickness of different hands, it is not recommended to use human hands for related tests. It is recommended to use grounding copper pillars of different thicknesses to simulate the touch of a human hand. A thick copper column is used to characterize the lower limit of sensitivity. At this time, each test button can correctly respond to touch signals. Use thin copper pillars to characterize the lower limit of sensitivity. At this time, each test button should not respond to touch signals. The thickness of the specific copper pillars needs to be designed according to the actual sensitivity requirements.

In small batch production, the recommended software is Uniflash and the recommended tool is eZ-FET or MSP-FET.

UniFlash★: UniFlash is a programming GUI tool developed by TI, which supports JTAG and BSL. To program MSP430, You need to load a binary file, which can be generated as described in this post.

MSP-FET★: The most powerful and fastest MSP430 debug probe. Target VCC is selectable and the maximum supply current is 100 mA.

eZ-FET★: A low-cost MSP430 debug probe and usually sold with LaunchPad kits. Supports a fixed voltage power supply.

In mass production, MSP-GANG and its supporting upper computer software are recommended.

MSP-GANG★: The MSP Gang Programmer cannot debug code and is used for product production. It can be operated without a PC and supports programming eight MSP430 MCUs at the same time.