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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STV3550 датащи(PDF) 125 Page - STMicroelectronics |
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STV3550 датащи(HTML) 125 Page - STMicroelectronics |
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125 / 144 page  STV3550 125/144 more. When there is nothing more to send, a TxEmpty interrupt would tell the driver that everything has been transmitted. When receiving, the driver could use RxBufFull to interrupt every time a character arrived. Alternatively, if data is coming in back-to-back, it could use RxHalfFull to interrupt it when there was more than 8 characters in the input FIFO to read. It would have as long as it takes to receive 8 characters to respond to this interrupt before data could overrun. If less than 8 characters streamed in, and no more were received for at least a time-out period, the driver could be woken up by one of the two time-out interrupts, TimeoutNotEmpty or TimeoutIdle. Figure 74: ASC Transmission Figure 75: ASC Reception Idle Idle TxEmpty Interrupt Output Shift Register Transmission ASCTxBuffer Register char 2 char 1 char 2 char 3 char 3 char 1 char 2 char 3 Write char1 Write char2 Write char3 TxHalfEmpty Interrupt Idle Idle RxBufFull Input Shift Register Receive ASCRxBuffer Register char1 char 2 char 1 char 2 char 3 char 3 char 1 char 2 char 3 |
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