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

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

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

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DX<br />

2: short break (1 frame)<br />

3: extra long break (3 frames)<br />

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

Return Value<br />

none<br />

Comments<br />

Top of list<br />

Index page<br />

A short break is a continuous Low on the TXD output for a duration of more than one frame transmission<br />

time M, where:<br />

M = startbit + data bits (+ parity bit) + stop bit<br />

A long break is a continuous Low on the TXD output for a duration of more than two frame transmission<br />

times plus the transmission time for three additional bits (2M+3).<br />

A extra long break is a continuous Low on the TXD output for a duration of more than three frame<br />

transmission times.<br />

Interrupt 0x14 service 0x84: Enable/disable UART receiver<br />

Parameters<br />

AH<br />

AL<br />

DX<br />

Enable/Disable UART receiver<br />

0x84<br />

0: disable receiver 1: enable receiver<br />

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

Return Value<br />

none<br />

Comments<br />

This function is useful when using the SM35 as RS485 adapter. Use this function to disable the receiver<br />

before transmitting data. Wait until all data is sent and then reenable the receiver. This prevents<br />

receiving your own transmitted data.<br />

By default the receiver is enabled.<br />

Page 339 / 400

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