Maxim-integrated 73M1822/73M1922 Hardware Module for SMDK412 Uživatelský manuál stáhnout pdf (Strana 21)

UG_1x22_054 73M1822/73M1922 Hardware Module for SMDK412 User Guide

Rev. 1.1 21

4.6 ioctl

Description

The driver, while accessed from the kernel space, does not require the calling of a specific IOCTL

command. The following sections detail the equivalent exported direct function calls that are available in

the Kernel space.

4.6.1 tsc_1x22_rs232_get

Description

Retrieves the current status of the RS232 RTS, DTS, CTR and DTR pins.

IOCTL Equivalent

TSC_1X22_MAFE_GET_RS232

Prototype

unsigned char tsc_1x22_rs232_get(void);

Parameters

Data Type Name Description

Void

Return Values

Data Type Description

unsigned char

See RS232 #defines.

4.6.2 tsc_1x22_rs232_set

Description

Sets the current status of the RS232 RTS,DTS,CTR and DTR pins and then returns the resulting status

via call to tsc_1x22_rs232_get.

IOCTL Equivalent

TSC_1X22_MAFE_SET_RS232

Prototype

unsigned char tsc_1x22_rs232_set(unsigned char RS232);

Parameters

Data Type Name Description

unsigned char

RS232

Bits to set. See RS232 #defines.

Return Values

Data Type Description

unsigned char

See

tsc_1x22_rs232_get

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Maxim-integrated 73M1822/73M1922 Hardware Module for SMDK412 Uživatelský manuál Strana 21