TP_WaitCalibratedResult

C Specification

#include <nitro/spi.h>
u32 TP_WaitCalibratedResult( TPData * result );

Arguments

result Pointer to the variable for getting the touch-panel value

Return Values

0 if touch-panel value is obtained successfully.
Non-zero value if task fails due to some error.

Description

This function checks whether the touch panel values that were requested using TP_RequestSamplingAsync have been set from ARM7. It then acquires them as calibrated screen coordinates (X value ranges between 0 and 255; Y value ranges between 0 and 191) The value obtained here already accounts for chattering. If no response has arrived from ARM7, it will wait internally until there is a response.

Caution

If this function is called before a response is received from ARM7, it will wait with an interrupt for a completion response. Therefore, if it is called while FIFO receive interrupts from ARM7 are prohibited, it may not be possible to return from wait. If you call it during a touch panel callback, use TP_GetCalibratedResult.

See Also

TP_RequestSamplingAsync, TP_GetCalibratedResult, TP_WaitRawResult, TPData

Revision History

04/16/2004 Initial version