MSP430F5438A: Running from Flash, Time function does not work

Carl Johnson

Part Number: MSP430F5438A

Tool/software:

I have created a program that uses 3 SPI and 1 serial interfaces. The program sees the time from debug mode but when I flash it the time is frozen. The time function is part of the TI lib (MSP430F5xx_6xx). It could be a optimization issue or something else, not sure. The code does executes for the most part. The SPI and serial interfaces are working and this is not a code crash but the timer is frozen. I am not able to track it down.

1 month ago

0 Cash Hao11 1 month ago

TI__Mastermind 46435 points

Hi,

What do you mean by the time function? Is it a timer not working? If it is related to a timer function, then you can try the timer demo example in this link first and check if the timer is working as expected.

https://dev.ti.com/tirex/explore/node?node=A__AIoINfX6iWOX2idNOUguRQ__msp430ware__IOGqZri__LATEST

Best regards,

Cash Hao

0 Carl Johnson 1 month ago in reply to Cash Hao11

Prodigy 10 points

Running the code in standalone (release) the function time(&now) does not update time. I have added a module with a timer that runs at 1 sec interval to update a counter. This seems to work, but I would still like to understand why time() stops working. I have set the optimization sabe for both debug and release, but this did not fix the issue.

0 Bruce McKenney 1 month ago in reply to Carl Johnson

Guru 99235 points

CCS C compiler guide (SLAU132Y) Sec 7.1.6 mentions that "The default implementations of [clock()/time()] require that the program be run under CCS or a similar tool that supports the CIO System Call Protocol. If CIO is not available and you need to use one of these functions, you must provide your own definition of the function."

With the debugger disconnected you don't have CIO.

+1 Carl Johnson 1 month ago in reply to Bruce McKenney

Prodigy 10 points

Thanks this helps.

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MSP430F5438A: Running from Flash, Time function does not work