01.06.2013 Views

IPC@CHIP Documentation - SC12 @CHIP-RTOS V1.10

IPC@CHIP Documentation - SC12 @CHIP-RTOS V1.10

IPC@CHIP Documentation - SC12 @CHIP-RTOS V1.10

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

AH<br />

AL<br />

DX<br />

0x0F<br />

Bit mask describing requested flow control.<br />

Port number: 0 for EXT, 1 for COM<br />

Return Value<br />

none<br />

Comments<br />

Bit fields for FOSSIL data flow control:<br />

B0: XON/XOFF on transmit (watch for XOFF while sending)<br />

B1: CTS/RTS (CTS on transmit/RTS on receive)<br />

B2: reserved<br />

B3: XON/XOFF on receive (send XOFF when buffer near full)<br />

B4-B7: Ignored<br />

Notes:<br />

Developer Notes<br />

❍ XON/XOFF and CTS/RTS are not allowed at the same time.<br />

XON/XOFF mode is also available if the DMA mode for the serial port is enabled but because of the internal<br />

functionality of DMA it is not possible to detect an XON or XOFF of the peer immediately. It is possible that an<br />

overrun situation at the connected peer (e.g. GSM modem) could occur. We now provide this mode because<br />

GSM modems (any??) support only XON/XOFF flow ctrl.<br />

Top of list<br />

Index page<br />

Interrupt 0x14 service 0x18: Read block of data<br />

Parameters<br />

AH<br />

CX<br />

DX<br />

Read up to a specified number of bytes from a serial port.<br />

0x18<br />

Maximum number of bytes to transfer.<br />

Port number: 0 for EXT, 1 for COM<br />

Page 333 / 400

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!