/**
* @brief Return Touch Screen X position value
* @param None
* @retval X position.
*/
uint16_t IOE_TS_Read_X(void)
{
#if 0
int32_t x, xr;
x = I2C_ReadDataBuffer(IOE_1_ADDR, IOE_REG_TSC_DATA_X);
/* first correction */
xr = (x * 320) >> 12;
/* second correction */
xr = ((xr * 32)/29) - 17;
if (xr <= 0) {
xr = 0;
}
return (uint16_t)(xr);
#else
int32_t icount, sum = 0;
for (icount = 0; icount < 16; icount++) {
sum += I2C_ReadDataBuffer(IOE_1_ADDR, IOE_REG_TSC_DATA_X);
}
sum >>= 4;
if (sum <= 0) {
sum = 0;
}
return (uint16_t)(sum);
#endif
}
/**
* @brief Return Touch Screen Y position value
* @param None
* @retval Y position.
*/
uint16_t IOE_TS_Read_Y(void)
{
#if 0
int32_t y, yr;
y= I2C_ReadDataBuffer(IOE_1_ADDR, IOE_REG_TSC_DATA_Y);
yr= (y * 240) >> 12;
yr = ((yr * 240) / 217) - 12;
if (yr <= 0) {
yr = 0;
}
return (uint16_t)(yr);
#else
int32_t icount, sum = 0;
for (icount = 0; icount < 16; icount++) {
sum += I2C_ReadDataBuffer(IOE_1_ADDR, IOE_REG_TSC_DATA_Y);
}
sum >>= 4;
if (sum <= 0) {
sum = 0;
}
return (uint16_t)(sum);
#endif
}
/**
* @brief Return Touch Panel Y position value
* @param None
* @retval Y position.
*/
static uint16_t IOE_TP_Read_Y(void)
{
int32_t y, yr;
/* Read y value from DATA_Y register */
y = I2C_ReadDataBuffer(IOE_REG_TP_DATA_Y);
/* y value first correction */
y -= 360;
/* y value second correction */
yr = y / 11;
/* return y position value */
if(yr <= 0)
{
yr = 0;
}
else if (yr > 320)
{
yr = 319;
}
else
{}
return (uint16_t)(yr);
}
/**
* @brief Return Touch Panel X position value
* @param None
* @retval X position.
*/
static uint16_t IOE_TP_Read_X(void)
{
int32_t x, xr;
/* Read x value from DATA_X register */
x = I2C_ReadDataBuffer(IOE_REG_TP_DATA_X);
/* x value first correction */
if(x <= 3000)
{
x = 3870 - x;
}
else
{
x = 3800 - x;
}
/* x value second correction */
xr = x / 15;
/* return x position value */
if(xr <= 0)
{
xr = 0;
}
else if (xr > 240)
{
xr = 239;
}
else
{}
return (uint16_t)(xr);
}
/**
* @brief Read the coordinate of the point touched and assign their
* value to the variables u32_TSXCoordinate and u32_TSYCoordinate
* @param None
* @retval None
*/
void TSC_Read(void)
{
#if TOUCH_SCREEN_CAPABILITY
TSC_Value_X = 0x00;
TSC_Value_Y = 0x00;
if((I2C_ReadDeviceRegister(pTscHwParam.TSC_DeviceRegister, GL_TSC_CTRL) & 0x80))
{
GL_Delay(TOUCH_DELAY);
/* Stop touchscreen controller */
I2C_WriteDeviceRegister(pTscHwParam.TSC_DeviceRegister, GL_TSC_CTRL, 0x00);
TSC_Value_X = I2C_ReadDataBuffer(pTscHwParam.TSC_DeviceRegister, GL_TSC_DATA_Y);
TSC_Value_Y = I2C_ReadDataBuffer(pTscHwParam.TSC_DeviceRegister, GL_TSC_DATA_X);
I2C_ReadDataBuffer(pTscHwParam.TSC_DeviceRegister, GL_TSC_DATA_Z);
u32_TSXCoordinate = getDisplayCoordinateX( TSC_Value_X, TSC_Value_Y );
u32_TSYCoordinate = getDisplayCoordinateY( TSC_Value_X, TSC_Value_Y );
touch_done = 1;
/* Clear the interrupt pending bit and enable the FIFO again */
I2C_WriteDeviceRegister(pTscHwParam.TSC_DeviceRegister, GL_FIFO_CTRL_STA, 0x01);
I2C_WriteDeviceRegister(pTscHwParam.TSC_DeviceRegister, GL_INT_STA, IOE_TS_IT);
I2C_WriteDeviceRegister(pTscHwParam.TSC_DeviceRegister, GL_FIFO_CTRL_STA, 0x00);
GL_Delay(0x02);
/* Enable touchscreen controller */
I2C_WriteDeviceRegister(pTscHwParam.TSC_DeviceRegister, GL_TSC_CTRL, 0x01);
GL_Delay(0x05);
/* check if the FIFO is not empty */
if(I2C_ReadDeviceRegister(pTscHwParam.TSC_DeviceRegister, GL_FIFO_CTRL_STA) != 0x20)
{
/* Flush the FIFO */
I2C_WriteDeviceRegister(pTscHwParam.TSC_DeviceRegister, GL_FIFO_CTRL_STA, 0x01);
I2C_WriteDeviceRegister(pTscHwParam.TSC_DeviceRegister, GL_FIFO_CTRL_STA, 0x00);
}
}
else
{
GL_Delay(1);
}
#endif
}
/**
* @brief Return Touch Screen Z position value
* @param None
* @retval Z position.
*/
static uint16_t IOE_TS_Read_Z(void)
{
uint32_t z;
z = I2C_ReadDataBuffer(IOE_1_ADDR, IOE_REG_TSC_DATA_Z);
if(z <= 0)
z = 0;
return (uint16_t)(z);
}
/**
* @brief Return Touch Panel Z position value
* @param None
* @retval Z position.
*/
static uint16_t IOE_TP_Read_Z(void)
{
uint32_t z;
/* Read z value from DATA_Z register */
z = I2C_ReadDataBuffer(IOE_REG_TP_DATA_Z);
/* return z position value */
if(z <= 0)
z = 0;
return (uint16_t)(z);
}
/**
* @brief Return Touch Screen Y position value
* @param None
* @retval Y position.
*/
static uint16_t IOE_TS_Read_Y(void)
{
int32_t y, yr;
y= I2C_ReadDataBuffer(IOE_1_ADDR, IOE_REG_TSC_DATA_X);
yr= (y * 240) >> 12;
yr = ((yr * 240) / 217) - 12;
if(yr <= 0)
yr = 0;
return (uint16_t)(yr);
}
/**
* @brief Return Touch Screen Y position value
* @param None
* @retval Y position.s
*/
static uint16_t IOE_TS_Read_Y(void)
{
int32_t y, yr;
y= I2C_ReadDataBuffer(IOE_REG_TSC_DATA_Y);
yr= (y * LCD_PIXEL_HEIGHT) >> 12;
yr = ((yr * LCD_PIXEL_HEIGHT) / 217) - 12;
if(yr <= 0)
yr = 0;
return (uint16_t)(yr);
}
/**
* @brief Return Touch Screen X position value
* @param None
* @retval X position.
*/
static uint16_t IOE_TS_Read_X(void)
{
int32_t x, xr;
x = I2C_ReadDataBuffer(IOE_1_ADDR, IOE_REG_TSC_DATA_Y);
/* first correction */
xr = (x * 320) >> 12;
/* second correction */
xr = ((xr * 32)/29) - 17;
if(xr <= 0)
xr = 0;
return (uint16_t)(xr);
}