/*---------------------------------------------------------------------------*
* Routine: TS_EXC7200_Configure
*---------------------------------------------------------------------------*
* Description:
* The SPI bus and GPIO device are being declared.
* Inputs:
* void *aW -- Particular SPI workspace
* Outputs:
* T_uezError -- Error code
*---------------------------------------------------------------------------*/
T_uezError TS_EXC7200_Configure(T_uezDeviceWorkspace *aW)
{
T_EXC7200Workspace *p = (T_EXC7200Workspace *)aW;
UEZSemaphoreGrab(p->iSemWaitForTouch, 0);
UEZGPIOSetMux(p->iResetPin, 0);//Set to GPIO
UEZGPIOOutput(p->iResetPin);
UEZGPIOClear(p->iResetPin);
UEZTaskDelay(1);
UEZGPIOConfigureInterruptCallback(
UEZ_GPIO_PORT_FROM_PORT_PIN(p->iInteruptPin),
TS_EXC7200_InterruptISR,
p);
UEZGPIOEnableIRQ(p->iInteruptPin, GPIO_INTERRUPT_FALLING_EDGE);
UEZGPIOSet(p->iResetPin);
T_uezDevice i2c;
I2C_Request request;
T_uezError error;
TUInt8 dataIn[10];
TUInt8 dataOut[10] = { 0x03, 0x06, 0x0A, 0x04, 0x36, 0x3f, 0x01, 9, 0, 0};
request.iAddr = EXC7200_I2C_ADDRESS;
request.iSpeed = EXC7200_I2C_SPEED;
request.iReadData = dataIn;
request.iReadLength = 10;
request.iWriteData = dataOut;
request.iWriteLength = 10;
UEZI2COpen(p->iI2CBus, &i2c);
error = UEZI2CTransaction(i2c, &request);
return UEZ_ERROR_NONE;
}
/*---------------------------------------------------------------------------*
* Routine: TS_MC_AR1020_Poll
*---------------------------------------------------------------------------*
* Description:
* Take a reading from the TSC2406 and put in reading structure.
* Inputs:
* void *aW -- Workspace
* T_uezTSReading *aReading -- Pointer to final reading
* Outputs:
* T_uezError -- Error code
*---------------------------------------------------------------------------*/
T_uezError TS_MC_AR1020_Poll(void *aWorkspace, T_uezTSReading *aReading)
{
T_MC_AR1020Workspace *p =
(T_MC_AR1020Workspace *) aWorkspace;
T_uezError error;
I2C_Request r;
T_uezDevice i2c2;
TUInt8 data[5] = {0,0,0,0,0};
HAL_GPIOPort **p_gpio;
const TUInt32 pin = 15;
TUInt32 Read = 0;
TUInt32 x;
TUInt32 y;
HALInterfaceFind("GPIO2", (T_halWorkspace **)&p_gpio);
(*p_gpio)->SetInputMode(p_gpio, 1<<pin);
(*p_gpio)->SetMux(p_gpio, pin, 0); // set to GPIO
(*p_gpio)->Read(p_gpio, 1<<pin, &Read);
if ( Read == 0)
{
(aReading->iFlags) = (p->iLastTouch) ;
return UEZ_ERROR_NONE;
}
else
{
r.iAddr = AR1020_I2C_ADDRESS;
r.iSpeed = AR1020_I2C_SPEED;
r.iWriteData = 0;
r.iWriteLength = 0;
r.iWriteTimeout = UEZ_TIMEOUT_INFINITE;
r.iReadData = data;
r.iReadLength = 5;
r.iReadTimeout = UEZ_TIMEOUT_INFINITE;
error = UEZI2COpen("I2C2", &i2c2);
UEZI2CTransaction(i2c2, &r);
UEZI2CClose(i2c2);
x = data[4];
x = (x <<7);
x = x | data[3];
y = data[2];
y = (y <<7);
y = y | data[1];
//if(p->iIsCalibrating)
//for testing printf("%04x _ %04X\r\n", x, y);
if((data[0] & 0x01)== 0x01)
{
(aReading->iFlags) = (p->iLastTouch) = TSFLAG_PEN_DOWN;
(aReading->iX) = (p->iLastX)= x;
(aReading->iY) = (p->iLastY)= y;
if ((!p->iIsCalibrating) && (p->iHaveCalibration)) {
// Convert X & Y coordinates
TS_MC_AR1020_ApplyCalibration(
p, x, y,
(TUInt32 *) &aReading->iX,
(TUInt32 *) &aReading->iY);
}
}
else
{
(aReading->iFlags) = (p->iLastTouch)= 0;
(aReading->iX) = (p->iLastX);
(aReading->iY) = (p->iLastY);
TS_MC_AR1020_ApplyCalibration(
p, (p->iLastX), (p->iLastY),
(TUInt32 *) &aReading->iX,
(TUInt32 *) &aReading->iY);
}
return error;
}
}