Product Application

Rev.1.1

Detection of 5 simultaneously touch points is provided by reading appropriate registers (stores touch

coordinates) as is shown in the following code:

ft_void_t read_extended(ft_int16_t sx[5], ft_int16_t sy[5])

{

ft_uint32_t sxy0, sxyA, sxyB, sxyC;

sxy0 = Ft_Gpu_Hal_Rd32(phost,REG_CTOUCH_TOUCH0_XY);

sxyA = Ft_Gpu_Hal_Rd32(phost,REG_CTOUCH_TOUCH1_XY);

sxyB = Ft_Gpu_Hal_Rd32(phost,REG_CTOUCH_TOUCH2_XY);

sxyC = Ft_Gpu_Hal_Rd32(phost,REG_CTOUCH_TOUCH3_XY);

sx[0] = sxy0 >> 16;

sy[0] = sxy0;

sx[1] = sxyA >> 16;

sy[1] = sxyA;

sx[2] = sxyB >> 16;

sy[2] = sxyB;

sx[3] = sxyC >> 16;

sy[3] = sxyC;

sx[4] = Ft_Gpu_Hal_Rd16(phost,REG_CTOUCH_TOUCH4_X);

sy[4] = Ft_Gpu_Hal_Rd16(phost,REG_CTOUCH_TOUCH4_Y);

}

4. Related documents

Revelation Board datasheet: http://riverdi.com/revelation/