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#include "uni_avr_rpi.h"
#ifdef PAT9125
#include "pat9125.h"
#ifdef PAT9125_SWSPI
#include "swspi.h"
#endif //PAT9125_SWSPI
#ifdef PAT9125_SWI2C
#include "swi2c.h"
#endif //PAT9125_SWI2C
#ifdef PAT9125_HWI2C
#include <Wire.h>
#endif //PAT9125_HWI2C
unsigned char pat9125_PID1 = 0;
unsigned char pat9125_PID2 = 0;
int pat9125_x = 0;
int pat9125_y = 0;
int pat9125_b = 0;
int pat9125_init(unsigned char xres, unsigned char yres)
{
#ifdef PAT9125_SWSPI
swspi_init();
#endif //PAT9125_SWSPI
#ifdef PAT9125_SWI2C
swi2c_init(PAT9125_SWI2C_SDA, PAT9125_SWI2C_SCL, PAT9125_SWI2C_CFG);
#endif //PAT9125_SWI2C
#ifdef PAT9125_HWI2C
Wire.begin();
#endif //PAT9125_HWI2C
pat9125_PID1 = pat9125_rd_reg(PAT9125_PID1);
pat9125_PID2 = pat9125_rd_reg(PAT9125_PID2);
if ((pat9125_PID1 != 0x31) || (pat9125_PID2 != 0x91))
{
return 0;
}
pat9125_wr_reg(PAT9125_RES_X, xres);
pat9125_wr_reg(PAT9125_RES_Y, yres);
return 1;
}
int pat9125_update()
{
if ((pat9125_PID1 == 0x31) && (pat9125_PID2 == 0x91))
{
unsigned char ucMotion = pat9125_rd_reg(PAT9125_MOTION);
pat9125_b = pat9125_rd_reg(PAT9125_FRAME);
if (ucMotion & 0x80)
{
unsigned char ucXL = pat9125_rd_reg(PAT9125_DELTA_XL);
unsigned char ucYL = pat9125_rd_reg(PAT9125_DELTA_YL);
unsigned char ucXYH = pat9125_rd_reg(PAT9125_DELTA_XYH);
int iDX = ucXL | ((ucXYH << 4) & 0xf00);
int iDY = ucYL | ((ucXYH << 8) & 0xf00);
if (iDX & 0x800) iDX -= 4096;
if (iDY & 0x800) iDY -= 4096;
pat9125_x += iDX;
pat9125_y += iDY;
return 1;
}
}
return 0;
}
unsigned char pat9125_rd_reg(unsigned char addr)
{
unsigned char data = 0;
#ifdef PAT9125_SWSPI
swspi_start();
swspi_tx(addr & 0x7f);
data = swspi_rx();
swspi_stop();
#endif //PAT9125_SWSPI
#ifdef PAT9125_SWI2C
int iret = swi2c_readByte_A8(PAT9125_I2C_ADDR, addr, &data);
#endif //PAT9125_SWI2C
#ifdef PAT9125_HWI2C
Wire.beginTransmission(PAT9125_I2C_ADDR);
Wire.write(addr);
Wire.endTransmission();
if (Wire.requestFrom(PAT9125_I2C_ADDR, 1) == 1)
// if (Wire.available())
data = Wire.read();
#endif //PAT9125_HWI2C
return data;
}
void pat9125_wr_reg(unsigned char addr, unsigned char data)
{
#ifdef PAT9125_SWSPI
swspi_start();
swspi_tx(addr | 0x80);
swspi_tx(data);
swspi_stop();
#endif //PAT9125_SWSPI
#ifdef PAT9125_SWI2C
int iret = swi2c_writeByte_A8(PAT9125_I2C_ADDR, addr, &data);
#endif //PAT9125_SWI2C
#ifdef PAT9125_HWI2C
Wire.beginTransmission(PAT9125_I2C_ADDR);
Wire.write(addr);
Wire.write(data);
Wire.endTransmission();
#endif //PAT9125_HWI2C
}
#endif //PAT9125
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