RTOS/CC2640: link failure when adding posix semaphore to sample project ble5stack\simple_peripheral

peiqing xia

Part Number: CC2640
Other Parts Discussed in Thread: SYSBIOS,

Tool/software: TI-RTOS

while adding semaphore to sample project ble5stack\simple_peripheral, the final linkage step complains about "undefined first referenced symbol sem_init". Initially I thought it is a lib file missing in the -l link list. But I didn't find anything similar to posix in the linked libs in mutex sample project, which doesn't have the link error.
Some posts in the forum are talking about adding var Semaphore = xdc.useModule('ti.sysbios.knl.Semaphore'); in the project cfg setting. Adding it app_ble.cfg doesn't solve the problem.

I failed to find answers in "TI-RTOS 2.20 for CC13xx/CC26xx SimpleLink™ Wireless MCUs Getting Started Guide".

Many thanks for suggestions on solution/further study materials to understand the mechanism.

over 7 years ago

0 Evan W over 7 years ago

TI__Mastermind 41150 points

Hi,

Can you point me to what your referencing?

What device are you using? CC2640R2 or CC2640?

May be helpful to reference this lab: dev.ti.com/.../ble_01_posix.html

0 peiqing xia over 7 years ago in reply to Evan W

Intellectual 320 points

Hi, Evan, thanks for your help. I must have followed a post for old version of SDK. Steps in your link work without any glitch.

0 Evan W over 7 years ago in reply to peiqing xia

TI__Mastermind 41150 points

Thanks for letting me know! It's a new lab so I'm glad it was worth the time making it :)

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RTOS/CC2640: link failure when adding posix semaphore to sample project ble5stack\simple_peripheral