In SX Microcontrollers, SX/B Compiler and SX-Key Tool, JonnyMac wrote:

Peter,

I'm trying to hybridize your scheduler strategy with the way I've done things in the past, that is, UARTS in the interrupt.  I study your state-driven UART and found that it uses fewer cycles per call (by design, of course) so I modified it a bit and stuck it back into the ISR.  So far, so good.  Working on the TX side now.  My intent is to use the scheduler to handle the enqueuing and enqueuing of serial bytes.

I've tested the attached program at 38.4k serial RX which is the design max.

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