#include <nitro/spi.h>
typedef void (*TPRecvCallback)(
TPRequestCommand command,
TPRequestResult result,
u16 index );
This is the format of the the user callback that is called each time a request to the subprocessor is processed, and each time that a touch panel value is periodically received as the result of autosampling.
The command value identifies for which request the results are acquired. The result value acquires whether or not it was processed properly. The index value acquires the index of the most recent data when autosampling is in use.
TP_REQUEST_COMMAND_SAMPLING |
Requests sampling one time. Send with TP_RequestSampling*. |
TP_REQUEST_COMMAND_AUTO_ON |
Requests to start autosampling. Send with TP_RequestAutoSamplingStart. |
TP_REQUEST_COMMAND_AUTO_OFF |
Requests to stop autosampling. Send with TP_RequestAutoSamplingStop. |
TP_REQUEST_COMMAND_SET_STABILITY |
Requests to set chattering provision parameters. Send with TP_RequestSetStability. |
TP_REQUEST_COMMAND_AUTO_SAMPLING |
This callback is called each time data is set by autosampling. |
TP_RESULT_SUCCESS |
Successful end |
TP_RESULT_INVALID_PARAMETER |
Parameters in the request that was sent are incorrect. |
TP_RESULT_INVALID_STATUS |
Cannot process this instruction in current status. |
TP_RESULT_INVALID_EXCLUSIVE |
Sub processor's peripheral device interface is in busy status. |
TP_RESULT_PXI_BUSY |
Request failed because communication between CPUs is busy |
Argument enumerator types are defined below.
// Type of instruction issued to the touch panel
typedef enum {
TP_REQUEST_COMMAND_SAMPLING = 0x0, // Sample one time
TP_REQUEST_COMMAND_AUTO_ON = 0x1, // Start autosampling
TP_REQUEST_COMMAND_AUTO_OFF = 0x2, // Stop autosampling
TP_REQUEST_COMMAND_SETUP_STABILITY = 0x3, // Set chattering provision value
TP_REQUEST_COMMAND_AUTO_SAMPLING = 0x10 // Receive autosampling results
} TPRequestCommand;
// Type of results from the touch panel
typedef enum {
TP_RESULT_SUCCESS = 0 , // Success
TP_RESULT_INVALID_PARAMETER , // Invalid parameter
TP_RESULT_ILLEGAL_STATUS , // In current status cannot receive instructions
TP_RESULT_EXCLUSIVE , // SPI device is busy
TP_RESULT_PXI_BUSY // The PXI communication with ARM7 is busy
} TPRequestResult;
command |
Type of request command |
result |
Process results |
index |
Index value of autosampling callback |
None
TP_SetCallback, TP_RequestSampling, TP_RequestAutoSamplingStart, TP_RequestAutoSamplingStop, TP_RequestSetStability
04/16/2004 Initial version