Waiting for a flag to set - hangs

jackboatman — Wed, 13 Feb 2019 15:29:43 GMT

Many of the various code examples have simple wait instructions. For example:

while (CAN_A.MCR.B.NOTRDY == 0) {};

And these generally work. However, I occasionally (often) find that they do not work. For example:

while (eSCI_B.IFSR1.B.TDRE == 0) {};

This one (checking for LIN to be ready) hangs; when I stop the debugger / halt execution it is just sitting on that line of code. I have in some cases created multiple lines of code to create an "equivalent" function, but that is sort of silly.

I'm using S32DS and mpc5777C. I've got most of the other peripherals (CAN, SPI, etc.) working. Any ideas?

Re: Waiting for a flag to set - hangs

jackboatman — Wed, 13 Feb 2019 20:43:42 GMT

My bad. Was working too fast and was trying to use IFSR1.B.TDRE. I should have been using IFSR2.B.TXRDY.

Code seems to work okay now. Sorry for the distraction.

S32 Design StudioのトピックWaiting for a flag to set - hangs

Waiting for a flag to set - hangs

Re: Waiting for a flag to set - hangs