/* This function initializes the USB module. */
CyU3PReturnStatus_t
CyFxApplnInit (void)
{
CyU3POtgConfig_t otgCfg;
CyU3PGpioClock_t clkCfg;
CyU3PGpioSimpleConfig_t simpleCfg;
CyU3PReturnStatus_t status;
/* Initialize GPIO module. */
clkCfg.fastClkDiv = 2;
clkCfg.slowClkDiv = 0;
clkCfg.halfDiv = CyFalse;
clkCfg.simpleDiv = CY_U3P_GPIO_SIMPLE_DIV_BY_2;
clkCfg.clkSrc = CY_U3P_SYS_CLK;
status = CyU3PGpioInit (&clkCfg, NULL);
if (status != CY_U3P_SUCCESS)
{
return status;
}
/* Override GPIO 21 for VBUS control. */
status = CyU3PDeviceGpioOverride (21, CyTrue);
if (status != CY_U3P_SUCCESS)
{
return status;
}
/* Configure GPIO 21 as output for VBUS control. */
simpleCfg.outValue = CY_FX_HOST_VBUS_DISABLE_VALUE;
simpleCfg.driveLowEn = CyTrue;
simpleCfg.driveHighEn = CyTrue;
simpleCfg.inputEn = CyFalse;
simpleCfg.intrMode = CY_U3P_GPIO_NO_INTR;
status = CyU3PGpioSetSimpleConfig (21, &simpleCfg);
if (status != CY_U3P_SUCCESS)
{
return status;
}
/* Wait until VBUS is stabilized. */
CyU3PThreadSleep (100);
/* Initialize the OTG module. */
otgCfg.otgMode = CY_U3P_OTG_MODE_OTG;
otgCfg.chargerMode = CY_U3P_OTG_CHARGER_DETECT_ACA_MODE;
otgCfg.cb = CyFxOtgEventCb;
status = CyU3POtgStart (&otgCfg);
if (status != CY_U3P_SUCCESS)
{
return status;
}
/* Since VBATT or VBUS is required for OTG operation enable it. */
status = CyU3PUsbVBattEnable (CyTrue);
return status;
}
void
CyFxGpifAppInit (
void)
{
CyU3PReturnStatus_t status;
CyU3PGpioClock_t gpioClock;
CyU3PPibClock_t pibClock;
/* GPIO module needs to be initialized before SIB is initialized. This is required because
GPIOs are used in the SIB code.
*/
gpioClock.fastClkDiv = 2;
gpioClock.slowClkDiv = 16;
gpioClock.simpleDiv = CY_U3P_GPIO_SIMPLE_DIV_BY_2;
gpioClock.clkSrc = CY_U3P_SYS_CLK;
gpioClock.halfDiv = 0;
status = CyU3PGpioInit (&gpioClock, NULL);
if (status != CY_U3P_SUCCESS)
{
CyU3PDebugPrint (4, "GPIO Init failed, code=%d\r\n", status);
CyFxGpifAppErrorHandler (status);
}
/* Initialize PIB and load the GPIF waveform. */
pibClock.clkDiv = 2;
pibClock.clkSrc = CY_U3P_SYS_CLK;
pibClock.isHalfDiv = CyFalse;
pibClock.isDllEnable = CyFalse;
status = CyU3PPibInit (CyTrue, &pibClock);
if (status != CY_U3P_SUCCESS)
{
CyU3PDebugPrint (2, "Error: PIB Init failed with code %d\r\n", status);
CyFxGpifAppErrorHandler (status);
}
status = CyU3PGpifLoad (&Async_Admux_CyFxGpifConfig);
if (status != CY_U3P_SUCCESS)
{
CyU3PDebugPrint (2, "Error: GPIF load failed with code %d\r\n", status);
CyFxGpifAppErrorHandler (status);
}
/* Register a callback that will receive notifications of incoming requests. */
CyU3PMboxInit (CyFxAppMboxCallback);
}
/* GPIO application initialization function. */
void
CyFxGpioInit (void)
{
CyU3PGpioClock_t gpioClock;
CyU3PGpioComplexConfig_t gpioConfig;
CyU3PReturnStatus_t apiRetStatus = CY_U3P_SUCCESS;
/* Init the GPIO module. The GPIO block will be running
* with a fast clock at SYS_CLK / 2 and slow clock is not
* used. For the DVK, the SYS_CLK is running at 403 MHz.*/
gpioClock.fastClkDiv = 2;
gpioClock.slowClkDiv = 0;
gpioClock.simpleDiv = CY_U3P_GPIO_SIMPLE_DIV_BY_2;
gpioClock.clkSrc = CY_U3P_SYS_CLK;
gpioClock.halfDiv = 0;
apiRetStatus = CyU3PGpioInit(&gpioClock, NULL);
if (apiRetStatus != 0)
{
/* Error Handling */
CyU3PDebugPrint (4, "CyU3PGpioInit failed, error code = %d\n", apiRetStatus);
CyFxAppErrorHandler(apiRetStatus);
}
/* Configure GPIO 50 as PWM output */
gpioConfig.outValue = CyFalse;
gpioConfig.inputEn = CyFalse;
gpioConfig.driveLowEn = CyTrue;
gpioConfig.driveHighEn = CyTrue;
gpioConfig.pinMode = CY_U3P_GPIO_MODE_PWM;
gpioConfig.intrMode = CY_U3P_GPIO_NO_INTR;
gpioConfig.timerMode = CY_U3P_GPIO_TIMER_HIGH_FREQ;
gpioConfig.timer = 0;
gpioConfig.period = CY_FX_PWM_PERIOD;
gpioConfig.threshold = CY_FX_PWM_25P_THRESHOLD;
apiRetStatus = CyU3PGpioSetComplexConfig(50, &gpioConfig);
if (apiRetStatus != CY_U3P_SUCCESS)
{
CyU3PDebugPrint (4, "CyU3PGpioSetComplexConfig failed, error code = %d\n",
apiRetStatus);
CyFxAppErrorHandler(apiRetStatus);
}
/* Configure GPIO 51 as input for single time low measurement. */
gpioConfig.outValue = CyTrue;
gpioConfig.inputEn = CyTrue;
gpioConfig.driveLowEn = CyFalse;
gpioConfig.driveHighEn = CyFalse;
/* For doing one time measurements, this value should be
* set to static. For doing contiunous measurement, this
* value should be set to the required mode. */
gpioConfig.pinMode = CY_U3P_GPIO_MODE_STATIC;
gpioConfig.intrMode = CY_U3P_GPIO_NO_INTR;
gpioConfig.timerMode = CY_U3P_GPIO_TIMER_HIGH_FREQ;
gpioConfig.timer = 0;
/* Load the period to the maximum value
* so that the count is not reset. */
gpioConfig.period = 0xFFFFFFFF;
gpioConfig.threshold = 0;
apiRetStatus = CyU3PGpioSetComplexConfig(51, &gpioConfig);
if (apiRetStatus != CY_U3P_SUCCESS)
{
CyU3PDebugPrint (4, "CyU3PGpioSetComplexConfig failed, error code = %d\n",
apiRetStatus);
CyFxAppErrorHandler(apiRetStatus);
}
/* Enable a weak pullup on GPIO 52. */
apiRetStatus = CyU3PGpioSetIoMode (52, CY_U3P_GPIO_IO_MODE_WPU);
if (apiRetStatus != CY_U3P_SUCCESS)
{
CyU3PDebugPrint (4, "CyU3PGpioSetIoMode failed, error code = %d\n",
apiRetStatus);
CyFxAppErrorHandler(apiRetStatus);
}
/* Configure GPIO 52 as input for counter mode. */
gpioConfig.outValue = CyTrue;
gpioConfig.inputEn = CyTrue;
gpioConfig.driveLowEn = CyFalse;
gpioConfig.driveHighEn = CyFalse;
gpioConfig.pinMode = CY_U3P_GPIO_MODE_STATIC;
gpioConfig.intrMode = CY_U3P_GPIO_NO_INTR;
gpioConfig.timerMode = CY_U3P_GPIO_TIMER_NEG_EDGE;
gpioConfig.timer = 0;
/* Load the period to the maximum value
* so that the count is not reset. */
gpioConfig.period = 0xFFFFFFFF;
gpioConfig.threshold = 0;
apiRetStatus = CyU3PGpioSetComplexConfig(52, &gpioConfig);
if (apiRetStatus != CY_U3P_SUCCESS)
{
CyU3PDebugPrint (4, "CyU3PGpioSetComplexConfig failed, error code = %d\n",
apiRetStatus);
CyFxAppErrorHandler(apiRetStatus);
}
}
void
CyFxGpioInit (void)
{
CyU3PGpioClock_t gpioClock;
CyU3PGpioSimpleConfig_t gpioConfig;
CyU3PReturnStatus_t apiRetStatus = CY_U3P_SUCCESS;
/* Init the GPIO module */
gpioClock.fastClkDiv = 2;
gpioClock.slowClkDiv = 0;
gpioClock.simpleDiv = CY_U3P_GPIO_SIMPLE_DIV_BY_2;
gpioClock.clkSrc = CY_U3P_SYS_CLK;
gpioClock.halfDiv = 0;
apiRetStatus = CyU3PGpioInit(&gpioClock, CyFxGpioIntrCb);
if (apiRetStatus != 0)
{
/* Error Handling */
CyU3PDebugPrint (4, "CyU3PGpioInit failed, error code = %d\n", apiRetStatus);
CyFxAppErrorHandler(apiRetStatus);
}
/* Configure GPIO 45 as input with interrupt enabled for both edges */
gpioConfig.outValue = CyTrue;
gpioConfig.inputEn = CyTrue;
gpioConfig.driveLowEn = CyFalse;
gpioConfig.driveHighEn = CyFalse;
gpioConfig.intrMode = CY_U3P_GPIO_INTR_BOTH_EDGE;
apiRetStatus = CyU3PGpioSetSimpleConfig(45, &gpioConfig);
if (apiRetStatus != CY_U3P_SUCCESS)
{
/* Error handling */
CyU3PDebugPrint (4, "CyU3PGpioSetSimpleConfig failed, error code = %d\n",
apiRetStatus);
CyFxAppErrorHandler(apiRetStatus);
}
/* Override GPIO 21 as this pin is associated with GPIF Control signal.
* The IO cannot be selected as GPIO by CyU3PDeviceConfigureIOMatrix call
* as it is part of the GPIF IOs. Override API call must be made with
* caution as this will change the functionality of the pin. If the IO
* line is used as part of GPIF and is connected to some external device,
* then the line will no longer behave as a GPIF IO.. Here CTL4 line is
* not used and so it is safe to override. */
apiRetStatus = CyU3PDeviceGpioOverride (21, CyTrue);
if (apiRetStatus != 0)
{
/* Error Handling */
CyU3PDebugPrint (4, "CyU3PDeviceGpioOverride failed, error code = %d\n",
apiRetStatus);
CyFxAppErrorHandler(apiRetStatus);
}
/* Configure GPIO 21 as output */
gpioConfig.outValue = CyFalse;
gpioConfig.driveLowEn = CyTrue;
gpioConfig.driveHighEn = CyTrue;
gpioConfig.inputEn = CyFalse;
gpioConfig.intrMode = CY_U3P_GPIO_NO_INTR;
apiRetStatus = CyU3PGpioSetSimpleConfig(21, &gpioConfig);
if (apiRetStatus != CY_U3P_SUCCESS)
{
/* Error handling */
CyU3PDebugPrint (4, "CyU3PGpioSetSimpleConfig failed, error code = %d\n",
apiRetStatus);
CyFxAppErrorHandler(apiRetStatus);
}
}