LMT70 sensor onto the MSP430FR4133

Jimmy Hua

Other Parts Discussed in Thread: MSP430FR4133, LMT70, LMT70EVM

I am doing an independent study using the MSP430FR4133 MCU, onboard LCD screen, and analog LMT70 temperature sensor. I know that I should be using some ADC code to sample the LMT70 but I am not familiar with coding in C and using CCS.

Can someone help me understand how to connect the LMT70 onto the MCU and have it sampled correctly to be displayed on the LCD screen?

over 8 years ago

0 Aaron Heng over 8 years ago

TI__Mastermind 36880 points

Hi Jimmy,

Thank you for reaching out to us! Please read this TI Design, this might help you. Are you planning to use the standalone ADC or integrated ADC in MPS430?

www.ti.com/.../TIDA-00824 00824&tisearch=Search-EN-Everything

Aaron

0 Jimmy Hua over 8 years ago in reply to Aaron Heng

TI__Guru 50120 points

Aaron,

I am planning on using the integrated ADC on the MPS430. I know that for applications purposes, the T_ON is tied to VDD and TAO is connected into the ADC input of the MSP430. I am just confused code-wise, how I should set up the code to be able to read the mV voltage range, interpret that using linear interpolation, and ultimatel having it displayed onto the LCD screen of the MSP430FR4133EVM board.

Regards,

Jimmy

0 Aaron Heng over 8 years ago in reply to Jimmy Hua

TI__Mastermind 36880 points

Hi Jimmy,

The person who wrote the firmware for the LMT70 and TI design left for vacation. I'll try to see if I can find the example code for you.

Aaron

0 Aaron Heng over 8 years ago in reply to Aaron Heng

TI__Mastermind 36880 points

Hi Jimmy,

Thank you for being patience. Attached is the source code for MSP430 in a zip file. It can be found in the LMT70EVM directory. Please let me know if you have further question.

LMT70EVM_Firmware_Source-v1.05.zip

Aaron

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LMT70 sensor onto the MSP430FR4133