gpsserialcontrol.h

来自「一个基于windows mobile 的GPS 接受IC 驱动程序。」· C头文件 代码 · 共 42 行

#ifndef GPS_SERIAL_CONTROL_H__ // {
#define GPS_SERIAL_CONTROL_H__

/*******************************************************************************
 *
 *          IndoorGPS Serial Port Definitions
 *
 *      Refer to chapter 6.4 of the GL-20000 or Marlin; or 2 of the
 *      HammerHead specifications.
 *
 ******************************************************************************/

//  Pass these values into the GL chip to tell it which "virtual UART"
//  register (data/status/command) and operation (read/write) to use:

#define GL_SPI_WRITE_DATA    (         BIT(6))
#define GL_SPI_READ_DATA     (BIT(7) + BIT(6))
#define GL_SPI_WRITE_CONTROL (         0     )
#define GL_SPI_READ_STATUS   (BIT(7)         )   // Never used

//  Write these bits to the Control Register:

#define GL_CR_TMASK		BIT(4)	//	MASK of Transmitter Not Empty Interrupt Mask
#define GL_CR_RMASK		BIT(5)	//	MASK of Receiver Empty Interrupt Mask
#define GL_CR_TERR		BIT(6)	//	MASK of Transmitter underrun error
#define GL_CR_RERR		BIT(7)	//	MASK of Receiver overrun error (software must clear)

//  Read these bits from the Status Register:

#define GL_SR_TCNT		(BIT(5)-1)	// MASK of Transmitter FIFO byte count
                                    // (0~18 bytes ready to be read)
#define GL_SR_REMPTY	BIT(5)	    // MASK of Receiver FIFO empty (ready to
                                    // be filled with up to 18 bytes)
#define GL_SR_TERR		BIT(6)	    // MASK of Transmitter underrun error
#define GL_SR_RERR		BIT(7)      // MASK of Receiver overrun error
                                    // (software must clear)

#define GL_RX_FIFO_DEPTH    18      // Receive FIFO depth of GPS chips.

#endif  // } GPS_SERIAL_CONTROL_H__