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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 />

00h: 110<br />

01h: 150<br />

02h: 300<br />

03h: 600<br />

04h: 1200<br />

05h: 2400<br />

06h: 4800<br />

07h: 9600<br />

08h: 19200<br />

80h: 28800<br />

81h: 38400<br />

82h: 57600<br />

83h: 76800<br />

84h: 115200<br />

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

Return Value<br />

Comments<br />

Top of list<br />

Index page<br />

AH: Status code (see service 0x03)<br />

Two stop bits are only available if no parity is set.<br />

Interrupt 0x14 service 0x80: Enable/Disable RS485 mode<br />

Parameters<br />

AH<br />

AL<br />

DX<br />

Enable the RS485 mode.<br />

0x80<br />

0=TxEnable low active<br />

1=TxEnable high active<br />

2=Disable RS485 mode<br />

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

Return Value<br />

none<br />

Comments<br />

By default the RTS0 and RTS1 signals (pins) are used to enable/disable the respective (EXT or COM)<br />

Page 336 / 400

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