Upgrading software from NDK 1.6 to 2.x

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ttribelli
Posts: 5
Joined: Sun Jan 02, 2022 1:05 am

Re: Upgrading software from NDK 1.6 to 2.x

Post by ttribelli »

I already have an alternative solution based on a pair of OS_SEM that explicitly blocks/unblocks the threads to alternate between them. Again, to be clear, no spacing out of DACout calls was necessary in 1.6, no delays, no explicit blocking/unblocking. All that was needed was a critical section around each MultiChannel_I2CSendBuf call and both threads ran.

What we are trying to understand is why 1.6 needed no explicit delays, blocking/unblocking, etc. If there is some way to enable similar behavior under 2.x. This has a great impact on some legacy project I do not currently have access to.

My best guess is that MultiChannel_I2CSendBuf used to block under 1.6, and that provided alternating between the two threads. And under 2.9.5 it no longer blocks so the secondary thread is never scheduled.
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