/**
* Configures the EZRadio GPIO port and pins
*
* @param[in] ezradioIrqCallback EZRadio interrupt callback configuration
* @param[in] enablePTI If true enables the radio PTI bridge in the controller.
*/
void ezradio_hal_GpioInit( GPIOINT_IrqCallbackPtr_t ezradioIrqCallback, bool enablePTI )
{
#if defined(_EZR32_HAPPY_FAMILY)
(void)enablePTI;
#endif
#if !defined(EZRADIODRV_SPI_4WIRE_MODE)
GPIO_PinModeSet( (GPIO_Port_TypeDef) RF_USARTRF_CS_PORT, RF_USARTRF_CS_PIN, gpioModePushPull, 1 );
#endif
/* Setup enable and interrupt pins to radio */
GPIO_PinModeSet( (GPIO_Port_TypeDef) RF_SDN_PORT, RF_SDN_PIN, gpioModePushPull, 0 );
GPIO_PinModeSet( (GPIO_Port_TypeDef) RF_INT_PORT, RF_INT_PIN, gpioModeInputPull, 1 );
/* EZR32HG family uses hard wired PTI interface from the radio to the board controller */
#if ( !defined(_EZR32_HAPPY_FAMILY) && !defined(EZRADIODRV_DISABLE_PTI) )
if (enablePTI)
{
/* Setup PRS for PTI pins */
CMU_ClockEnable(cmuClock_PRS, true);
/* Configure RF_GPIO0 and RF_GPIO1 to inputs. */
GPIO_PinModeSet((GPIO_Port_TypeDef)RF_GPIO0_PORT, RF_GPIO0_PIN, gpioModeInput, 0);
GPIO_PinModeSet((GPIO_Port_TypeDef)RF_GPIO1_PORT, RF_GPIO1_PIN, gpioModeInput, 0);
/* Pin PA0 and PA1 output the GPIO0 and GPIO1 via PRS to PTI */
GPIO_PinModeSet(gpioPortA, 0, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortA, 1, gpioModePushPull, 0);
/* Disable INT for PRS channels */
GPIO_IntConfig((GPIO_Port_TypeDef)RF_GPIO0_PORT, RF_GPIO0_PIN, false, false, false);
GPIO_IntConfig((GPIO_Port_TypeDef)RF_GPIO1_PORT, RF_GPIO1_PIN, false, false, false);
/* Setup PRS for RF GPIO pins */
PRS_SourceAsyncSignalSet(0, PRS_CH_CTRL_SOURCESEL_GPIOH, PRS_CH_CTRL_SIGSEL_GPIOPIN15);
PRS_SourceAsyncSignalSet(1, PRS_CH_CTRL_SOURCESEL_GPIOH, PRS_CH_CTRL_SIGSEL_GPIOPIN14);
PRS->ROUTE = (PRS_ROUTE_CH0PEN | PRS_ROUTE_CH1PEN);
/* Make sure PRS sensing is enabled (should be by default) */
GPIO_InputSenseSet(GPIO_INSENSE_PRS, GPIO_INSENSE_PRS);
}
#endif //#if !defined(_EZR32_HAPPY_FAMILY)
#if defined(EZRADIODRV_DISABLE_PTI) && defined(EZRADIODRV_COMM_USE_GPIO1_FOR_CTS)
//Enable GPIO1 for CTS input
GPIO_PinModeSet((GPIO_Port_TypeDef)RF_GPIO1_PORT, RF_GPIO1_PIN, gpioModeInput, 0);
#endif
if (NULL != ezradioIrqCallback)
{
/* Register callback and enable interrupt */
GPIOINT_CallbackRegister( RF_INT_PIN, ezradioIrqCallback );
GPIO_IntConfig( (GPIO_Port_TypeDef) RF_INT_PORT, RF_INT_PIN, false, true, true );
}
}
/** @brief Configure and enable/disable the device interrupt IRQ
*/
static void halExtDeviceIntCfgIrq(void)
{
/* Configure nIRQ signal to trigger Port Pin ISR */
GPIO_PinModeSet((GPIO_Port_TypeDef) RF_INT_PORT, RF_INT_PIN, gpioModeInput, 1u);
GPIO_InputSenseSet(GPIO_INSENSE_INT, GPIO_INSENSE_INT);
GPIOINT_CallbackRegister(RF_INT_PIN, halIrqxIsr);
GPIO_IntConfig((GPIO_Port_TypeDef) RF_INT_PORT, RF_INT_PIN, false, true, true);
if (halExtDeviceIntCB == NULL) {
halExtDeviceIntLevel = EXT_DEVICE_INT_UNCONFIGURED;
} else {
halExtDeviceIntLevel = EXT_DEVICE_INT_LEVEL_OFF;
// Callers need to use halExtDeviceIntEnable() to enable top level
}
}
/** @brief Initialize External Device GPIOs
* @param deviceIntCB The callback routine for device general interrupt
* (NULL to disable)
* @param deviceRdyCB The callback routine for device ready interrupt
* (NULL to disable)
* @return bitmask of configured features for this device
* @note First initialization after bootup leaves the device powered down
* and unselected. Subsequent inits don't touch the device powered
* or selected states and can be used to reconfigure callback(s),
* which always clears any stale/pending events. For deviceRdyCB,
* its interrupt is enabled upon configuration; for deviceIntCB,
* halExtDeviceIntEnable() must subsequently be called to enable it.
*/
HalExtDeviceConfig halExtDeviceInit(HalExtDeviceIrqCB deviceIntCB,
HalExtDeviceIrqCB deviceRdyCB)
{
UNUSED_VAR(halExtDeviceRdyCB); // Work around potential compiler warnings
UNUSED_VAR(halExtDeviceIntCB); // Work around potential compiler warnings
halExtDeviceRdyCB = deviceRdyCB;
halExtDeviceIntCB = deviceIntCB;
CMU_ClockEnable(cmuClock_PRS, true);
/* Pin is configured to Push-pull: SDN */
GPIO_PinModeSet((GPIO_Port_TypeDef) RF_SDN_PORT, RF_SDN_PIN, gpioModePushPull, 1u);
/* Pin is configured to Push-pull: nSEL */
GPIO_PinModeSet((GPIO_Port_TypeDef) RF_USARTRF_CS_PORT, RF_USARTRF_CS_PIN, gpioModePushPull, 1u);
/* Pin PE13 is configured input: nIRQ */
//GPIO_PinModeSet(RF_INT_PORT, RF_INT_PIN, gpioModeInput, 0u);
/* Pin PA15 and PE14 are connected to GPIO0 and GPIO1 respectively. */
GPIO_PinModeSet((GPIO_Port_TypeDef) RF_GPIO0_PORT, RF_GPIO0_PIN, gpioModeInput, 0);
GPIO_PinModeSet((GPIO_Port_TypeDef) RF_GPIO1_PORT, RF_GPIO1_PIN, gpioModeInput, 0);
/* Pin PA0 and PA1 are output the GPIO0 and GPIO1 via PRS */
GPIO_PinModeSet(gpioPortA, 0, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortA, 1, gpioModePushPull, 0);
/* Configure INT/PRS channels */
GPIO_IntConfig((GPIO_Port_TypeDef) RF_GPIO0_PORT, RF_GPIO0_PIN, false, false, false);
GPIO_IntConfig((GPIO_Port_TypeDef) RF_GPIO1_PORT, RF_GPIO1_PIN, false, false, false);
/* Setup PRS */
PRS_SourceAsyncSignalSet(0, PRS_CH_CTRL_SOURCESEL_GPIOH, PRS_CH_CTRL_SIGSEL_GPIOPIN15);
PRS_SourceAsyncSignalSet(1, PRS_CH_CTRL_SOURCESEL_GPIOH, PRS_CH_CTRL_SIGSEL_GPIOPIN14);
PRS->ROUTE = (PRS_ROUTE_CH0PEN | PRS_ROUTE_CH1PEN);
/* Make sure PRS sensing is enabled (should be by default) */
GPIO_InputSenseSet(GPIO_INSENSE_PRS, GPIO_INSENSE_PRS);
/* TODO: Check whether the removed part is required
for the EZR32 implementation */
halExtDeviceRdyCfgIrq();
halExtDeviceIntCfgIrq();
return 0;
}
