# TP_CheckError

## C Specification

  `#include <nitro/spi.h>`

      u32 TP_CheckError( TPRequestCommandFlag command_flgs );

## Arguments

command_flgs | Specifies on which command to perform an error check

## Return Values

Returns 0 if no error has been generated. Returns non-zero value if an error has been generated.

## Description

Checks to see if a touch panel request that has been transmitted to ARM7 was terminated with an error 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 sampling 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 chattering provision parameters. Send with `TP_RequestSetStability`.

The following describes the enumerated type definitions of the arguments.

    // 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;

## See Also

## Revision History

04/19/2004 Changed argument types
04/16/2004 Initial version

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