static void BSP_TSI_Init (void)
{
BSP_TSI_Slider.EndFlg = DEF_FALSE; /* Initialize global variables. */
BSP_TSI_Slider.Electrodes[0].PinNbr = BSP_TSI_PIN9;
BSP_TSI_Slider.Electrodes[1].PinNbr = BSP_TSI_PIN10;
BSP_TSI_Slider.Electrodes[0].Threshold = BSP_TSI_THRESHOLD;
BSP_TSI_Slider.Electrodes[1].Threshold = BSP_TSI_THRESHOLD;
SIM_SCGC5 |= SIM_SCGC5_TSI_MASK; /* Enable clock gating for TSI. */
/* Enable proper GPIO as TSI channels. */
PORTB_PCR16 = PORT_PCR_MUX(0); /* PTB16 as TSI channel 9. */
PORTB_PCR17 = PORT_PCR_MUX(0); /* PTB17 as TSI channel 10. */
BSP_IntVectSet(BSP_INT_ID_TSI0, BSP_TSI_IntHandler); /* Register the interrupt handler. */
BSP_IntEn(BSP_INT_ID_TSI0); /* Enable the TSI module interrupts. */
TSI0_GENCS |= (TSI_GENCS_ESOR_MASK
| TSI_GENCS_MODE(0)
| TSI_GENCS_REFCHRG(4)
| TSI_GENCS_DVOLT(0)
| TSI_GENCS_EXTCHRG(7)
| TSI_GENCS_PS(4)
| TSI_GENCS_NSCN(11)
| TSI_GENCS_TSIIEN_MASK
| TSI_GENCS_STPE_MASK);
TSI0_GENCS |= TSI_GENCS_TSIEN_MASK; /* Enable the TSI module. */
BSP_TSI_SelfCal(); /* Self calibration. */
}
void TSI_Init (void)
{
SIM_SCGC5 |= SIM_SCGC5_TSI_MASK; // Enable clock gating for TSI
/* Enable proper GPIO as TSI channels */
PORTB_PCR17 = PORT_PCR_MUX(0); // PTA1 as TSI channel 2
PORTB_PCR16 = PORT_PCR_MUX(0); // PTA2 as TSI channel 3
enable_irq(TSI_irq_no);
TSI0_GENCS |= (TSI_GENCS_ESOR_MASK
| TSI_GENCS_MODE(0)
| TSI_GENCS_REFCHRG(4)
| TSI_GENCS_DVOLT(0)
| TSI_GENCS_EXTCHRG(7)
| TSI_GENCS_PS(4)
| TSI_GENCS_NSCN(11)
| TSI_GENCS_TSIIEN_MASK
| TSI_GENCS_STPE_MASK
//| TSI_GENCS_STM_MASK //Trigger for the module 0=Sofware
);
TSI0_GENCS |= TSI_GENCS_TSIEN_MASK;
TSI_SelfCalibration();
}
// Initialize touch input
void touchInit(uint32_t channelMask)
{
int i;
// Turn on clock gating for TSI and configure touch input
clkEnable(CLK_TSI);
TSI0_GENCS |= ( TSI_GENCS_ESOR_MASK // Enable end of scan interrupt
| TSI_GENCS_MODE(0) // Capacitive sensing
| TSI_GENCS_REFCHRG(4) // Reference charge 4 uA
| TSI_GENCS_DVOLT(0) // Voltage rails
| TSI_GENCS_EXTCHRG(7) // External osc charge
| TSI_GENCS_PS(4) // Pre-scalar divide by 4
| TSI_GENCS_NSCN(11) // Scans per electrode
| TSI_GENCS_TSIIEN_MASK // Input interrupt enable
| TSI_GENCS_STPE_MASK // Enable in STOP mode
);
TSI0_GENCS |= TSI_GENCS_TSIEN_MASK;
// Read initial (baseline) values for each enabled channel
sEnableMask = channelMask;
for (i = (NUM_CHANNELS - 1); i >= 0; i--)
{
if ((1 << i) & sEnableMask)
{
scanStart(i);
while (!(TSI0_GENCS & TSI_GENCS_EOSF_MASK)) // Wait until done
;
sBaseCounts[i] = scanData();
}
}
// Enable TSI interrupts and start the scan timer
irqRegister(INT_TSI0, tsiIrqHandler, 0);
irqEnable(INT_TSI0);
{
osTimerDef_t tDef;
tDef.ptimer = startTimerCb;
tDef.millisec = TOUCH_SCAN_TIME;
tDef.name = "touch";
sStartTimer = osTimerCreate(&tDef, osTimerPeriodic, 0);
osTimerStart(sStartTimer, TOUCH_SCAN_TIME);
}
}
// Initialize touch input
void touch_init(uint32_t channel_mask)
{
// Turn on clock gating for TSI and configure touch input
SIM_SCGC5 |= SIM_SCGC5_TSI_MASK;
TSI0_GENCS |= (TSI_GENCS_ESOR_MASK // Enable end of scan interrupt
| TSI_GENCS_MODE(0) // Capactive sensing
| TSI_GENCS_REFCHRG(4) // Reference charge 4 uA
| TSI_GENCS_DVOLT(0) // Voltage rails
| TSI_GENCS_EXTCHRG(7) // External osc charge
| TSI_GENCS_PS(4) // Prescalar divide by 4
| TSI_GENCS_NSCN(11) // Scans per electrode
| TSI_GENCS_TSIIEN_MASK // Input interrupt enable
| TSI_GENCS_STPE_MASK // Enable in STOP mode
);
TSI0_GENCS |= TSI_GENCS_TSIEN_MASK;
// Enable touch I/O pins for Freedom board, and configure
// the scan sequence
PORTB_PCR16 = PORT_PCR_MUX(0); // PTB16 as touch channel 9
PORTB_PCR17 = PORT_PCR_MUX(0); // PTB17 as touch channel 10
// Read initial (baseline) values for each enabled channel
int i, first_channel = 0;
enable_mask = channel_mask;
for(i=15; i>=0; i--) {
if((1 << i) & enable_mask) {
scan_start(i);
while(!(TSI0_GENCS & TSI_GENCS_EOSF_MASK)) // Wait until done
;
base_counts[i] = scan_data();
first_channel = i;
}
}
// Enable TSI interrupts and start the first scan
enable_irq(INT_TSI0);
scan_start(first_channel);
}
void TSISensor::TSISensor_reset(void) {
SIM->SCGC5 |= SIM_SCGC5_PORTB_MASK;
SIM->SCGC5 |= SIM_SCGC5_TSI_MASK;
TSI0->GENCS |= (TSI_GENCS_ESOR_MASK
| TSI_GENCS_MODE(0)
| TSI_GENCS_REFCHRG(4)
| TSI_GENCS_DVOLT(0)
| TSI_GENCS_EXTCHRG(7)
| TSI_GENCS_PS(4)
| TSI_GENCS_NSCN(11)
| TSI_GENCS_TSIIEN_MASK
| TSI_GENCS_STPE_MASK
);
TSI0->GENCS |= TSI_GENCS_TSIEN_MASK;
//NVIC_SetVector(TSI0_IRQn, (uint32_t)&tsi_irq);
//NVIC_EnableIRQ(TSI0_IRQn);
selfCalibration();
}
/*******************************************************************
* TSI module initialization.
*/
void TSI_Init (void)
{
SIM_SCGC5 |= SIM_SCGC5_TSI_MASK; // Enable clock gating for TSI
/* Enable proper GPIO as TSI channels */
PORTA_PCR13 = PORT_PCR_MUX(0); // PTB16 as TSI channel 9
PORTB_PCR12 = PORT_PCR_MUX(0); // PTB17 as TSI channel 8
enable_irq(INT_TSI0-16);
TSI0_GENCS |= (TSI_GENCS_ESOR_MASK
| TSI_GENCS_MODE(0)
| TSI_GENCS_REFCHRG(4)
| TSI_GENCS_DVOLT(0)
| TSI_GENCS_EXTCHRG(7)
| TSI_GENCS_PS(4)
| TSI_GENCS_NSCN(11)
| TSI_GENCS_TSIIEN_MASK
| TSI_GENCS_STPE_MASK
//| TSI_GENCS_STM_MASK //Trigger for the module 0=Sofware
);
TSI0_GENCS |= TSI_GENCS_TSIEN_MASK; //Enable TSI module.
TSI_SelfCalibration();
}
