TP_WaitBusy

Syntax

#include <nitro/spi.h>
void TP_WaitBusy( TPRequestCommandFlag command_flgs );

Arguments

command_flgs Specifies for which command to wait

Return Values

None.

Description

Waits until processing is finished for touch panel request instructions that have been sent to ARM7. 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 one round of sampling. Sent with a TP_RequestSampling* function.
TP_REQUEST_COMMAND_FLAG_AUTO_ON Requests to start autosampling. Sent with the TP_RequestAutoSamplingStart function.
TP_REQUEST_COMMAND_FLAG_AUTO_OFF Requests to stop autosampling. Sent with the TP_RequestAutoSamplingStop function.
TP_REQUEST_COMMAND_FLAG_SET_STABILITY Requests to set the chattering parameter. Sent with the TP_RequestSetStability function.

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;

Note

This function uses an interrupt to wait for a completion response from ARM7. If it is called while FIFO receive interrupts from ARM7 are prohibited, it may not be possible to return from wait.

See Also

TP_RequestAutoSamplingStart, TP_RequestAutoSamplingStop,TP_RequestSetStability, TP_CheckError

Revision History

2004/04/19 Added argument.
2004/04/16 Initial version.

CONFIDENTIAL