CCS/MSP430FR5994: How to write pre-trained model data into FRAM

Yubo Luo

Part Number: MSP430FR5994

Tool/software: Code Composer Studio

Hi,

I am doing light-weight Machine Learning with the MSP430FR5994 launchpad. I trained the model off-line and I need to upload the trained model data to the launchpad. I am using CCS to program the board. The trained model data should be saved in a float_point array which resides in FRAM. I used PERSISTENT to declare the variable.

#pragma LOCATION(model, 0x14800);
#pragma PERSISTENT(model);
float model[width][length] = {0};

How can I write pre-trained model data into this variable while I am programming the board with CCS?

Thanks,

Yubo

over 6 years ago

0 Winter Yu over 6 years ago

TI__Genius 12315 points

Hi Yubo,

If the data won't be modified, then using const to declare the variable is more suitable. There are two suggestions to upload the model data.

1. Declare the float model[width][length] variable in a C file with it's initial value as below. These can be performed by a little PC program which reads the model data file in PC and generates the C file automatically.

float model[width][length] = { 0.1, 0.2, 0.3, ...};

2. Using BSL to upload the model data to it's memory space. This can update the model date without re-programming the code. Please see MSP430 BSL page for more information.

Bootloader (BSL) for MSP low-power microcontrollers

0 Yubo Luo over 6 years ago in reply to Winter Yu

Intellectual 475 points

Hi Winter,

Sorry, I did not explain well. My system does on-device training too, which means the float model array needs to update on the fly and I can not use const. Anyway, I will try your suggestions.

Thanks,

Yubo

0 Winter Yu over 6 years ago in reply to Yubo Luo

TI__Genius 12315 points

OK. I'll close this thread. You can still reply this post if any questions or create a new post.

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CCS/MSP430FR5994: How to write pre-trained model data into FRAM