TP_CheckBusy


C Specification

#include <nitro/spi.h>

u32 TP_CheckBusy( TPRequestCommandFlag command_flgs );

Description

Checks to see if a touch panel request that has been transmitted to ARM7 is being executed

You can check more than one request simultaneously if you provide the argument with the bitwise OR of multiple flags.

TP_REQUEST_COMMAND_FLAG_SAMPLING Requests to sample one time. Send with TP_RequestSampling*.
TP_REQUEST_COMMAND_FLAG_AUTO_ON Requests to start autosampling. Send with TP_RequestAutoSamplingStart.
TP_REQUEST_COMMAND_FLAG_AUTO_OFF Requests to stop autosampling. Send with TP_RequestAutoSamplingStop.
TP_REQUEST_COMMAND_FLAG_SET_STABILITY Requests to set parameters to counteract chattering. Send with TP_RequestSetStability.

Enumeration type definitions for the arguments are shown below.

// According to the type of instruction issued to the touch panel
typedef enum {
    TP_REQUEST_COMMAND_FLAG_SAMPLING      =  1 << TP_REQUEST_COMMAND_SAMPLING , 
    TP_REQUEST_COMMAND_FLAG_AUTO_ON       =  1 << TP_REQUEST_COMMAND_AUTO_ON , 
    TP_REQUEST_COMMAND_FLAG_AUTO_OFF      =  1 << TP_REQUEST_COMMAND_AUTO_OFF , 
    TP_REQUEST_COMMAND_FLAG_SET_STABILITY =  1 << TP_REQUEST_COMMAND_SET_STABILITY 
} TPRequestCommandFlag;

Arguments

command_flgs Specifies the command on which to perform a busy check.

Return Values

Returns 0 if a request is not being executed. Returns a non-zero value if a request is being executed.

Revision History

04/19/2004 Initial version