extern "C" AJ_Status AJS_TargetIO_PinEnableTrigger(void* pinCtx, AJS_IO_PinTriggerMode trigger, int32_t* trigId, uint8_t debounce)
{
GPIO* gpio = (GPIO*)pinCtx;
size_t pin;
uint16_t pinId;
uint16_t physicalPin = AJS_TargetIO_GetInfo(gpio->pinIdx)->physicalPin;
for (pin = 0; pin < ArraySize(pinInfo); ++pin) {
if (pinInfo[pin].pinNum == physicalPin) {
pinId = pinInfo[pin].pinId;
break;
}
}
if (!pinInfo[pin].func) {
return AJ_ERR_INVALID;
}
gpio->trigId = AllocTrigId(pin);
if (gpio->trigId == AJS_IO_PIN_NO_TRIGGER) {
return AJ_ERR_RESOURCES;
}
gpio->interrupt = new InterruptIn((PinName)pinId);
if (trigger == AJS_IO_PIN_TRIGGER_ON_RISE) {
gpio->interrupt->rise(pinInfo[pin].func);
} else if (trigger == AJS_IO_PIN_TRIGGER_ON_FALL) {
gpio->interrupt->fall(pinInfo[pin].func);
}
*trigId = gpio->trigId;
return AJ_OK;
}
AJ_Status AJS_TargetIO_PinEnableTrigger(void* pinCtx, AJS_IO_PinTriggerMode trigger, int32_t* trigId, uint8_t debounce)
{
GPIO* gpio = (GPIO*)pinCtx;
uint8_t trig;
uint8_t exti_gpio;
uint8_t exti_pin;
uint8_t exti_irqn;
uint8_t enable = ENABLE;
EXTI_InitTypeDef interrupt;
NVIC_InitTypeDef nvic;
GPIO_InitTypeDef gpio_int;
if ((trigger != AJS_IO_PIN_TRIGGER_ON_RISE) && (trigger != AJS_IO_PIN_TRIGGER_ON_FALL)) {
/*
* Disable interrupts on this pin
*/
enable = DISABLE;
return AJ_OK;
}
switch (gpio->gpioPin) {
case (GPIO_Pin_0):
exti_pin = EXTI_PinSource0;
exti_irqn = EXTI0_IRQn;
break;
case (GPIO_Pin_1):
/*
* EXTI1 is already used for WSL so return AJ_ERR_RESOURCES
*/
//exti_pin = EXTI_PinSource1;
//exti_irqn = EXTI1_IRQn;
return AJ_ERR_RESOURCES;
break;
case (GPIO_Pin_2):
exti_pin = EXTI_PinSource2;
exti_irqn = EXTI2_IRQn;
break;
case (GPIO_Pin_3):
exti_pin = EXTI_PinSource3;
exti_irqn = EXTI3_IRQn;
break;
case (GPIO_Pin_4):
exti_pin = EXTI_PinSource4;
exti_irqn = EXTI4_IRQn;
break;
case (GPIO_Pin_5):
exti_pin = EXTI_PinSource5;
exti_irqn = EXTI9_5_IRQn;
break;
case (GPIO_Pin_6):
exti_pin = EXTI_PinSource6;
exti_irqn = EXTI9_5_IRQn;
break;
case (GPIO_Pin_7):
exti_pin = EXTI_PinSource7;
exti_irqn = EXTI9_5_IRQn;
break;
case (GPIO_Pin_8):
exti_pin = EXTI_PinSource8;
exti_irqn = EXTI9_5_IRQn;
break;
case (GPIO_Pin_9):
exti_pin = EXTI_PinSource9;
exti_irqn = EXTI9_5_IRQn;
break;
case (GPIO_Pin_10):
exti_pin = EXTI_PinSource10;
exti_irqn = EXTI15_10_IRQn;
break;
case (GPIO_Pin_11):
exti_pin = EXTI_PinSource11;
exti_irqn = EXTI15_10_IRQn;
break;
case (GPIO_Pin_12):
exti_pin = EXTI_PinSource12;
exti_irqn = EXTI15_10_IRQn;
break;
case (GPIO_Pin_13):
exti_pin = EXTI_PinSource13;
exti_irqn = EXTI15_10_IRQn;
break;
case (GPIO_Pin_14):
exti_pin = EXTI_PinSource14;
exti_irqn = EXTI15_10_IRQn;
break;
case (GPIO_Pin_15):
exti_pin = EXTI_PinSource15;
exti_irqn = EXTI15_10_IRQn;
break;
}
switch ((uint32_t)gpio->GPIOx) {
case ((uint32_t)GPIOA):
exti_gpio = EXTI_PortSourceGPIOA;
break;
case ((uint32_t)GPIOB):
exti_gpio = EXTI_PortSourceGPIOB;
break;
case ((uint32_t)GPIOC):
exti_gpio = EXTI_PortSourceGPIOC;
break;
case ((uint32_t)GPIOD):
exti_gpio = EXTI_PortSourceGPIOD;
break;
case ((uint32_t)GPIOE):
exti_gpio = EXTI_PortSourceGPIOE;
break;
case ((uint32_t)GPIOF):
exti_gpio = EXTI_PortSourceGPIOF;
break;
case ((uint32_t)GPIOG):
exti_gpio = EXTI_PortSourceGPIOG;
break;
case ((uint32_t)GPIOH):
exti_gpio = EXTI_PortSourceGPIOH;
break;
case ((uint32_t)GPIOI):
exti_gpio = EXTI_PortSourceGPIOI;
break;
}
gpio->trigId = AllocTrigId(exti_pin);
if (gpio->trigId == AJS_IO_PIN_NO_TRIGGER) {
return AJ_ERR_RESOURCES;
}
gpio_int.GPIO_Pin = gpio->gpioPin;
gpio_int.GPIO_OType = GPIO_OType_PP;
gpio_int.GPIO_Mode = GPIO_Mode_IN;
gpio_int.GPIO_PuPd = GPIO_PuPd_NOPULL;
gpio_int.GPIO_Speed = GPIO_Speed_2MHz;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);
SYSCFG_EXTILineConfig(exti_gpio, exti_pin);
if (enable == ENABLE) {
GPIO_Init(gpio->GPIOx, &gpio_int);
} else {
GPIO_DeInit(gpio->GPIOx);
}
trig = (trigger == AJS_IO_PIN_TRIGGER_ON_RISE) ? EXTI_Trigger_Rising : EXTI_Trigger_Falling;
interrupt.EXTI_Trigger = trig;
interrupt.EXTI_Mode = EXTI_Mode_Interrupt;
interrupt.EXTI_LineCmd = enable;
if (gpio->gpioPin <= GPIO_Pin_15) {
/*
* The gpio pin defines match the EXTI line defines so there is not need for a
* large switch statement finding the correct match
*/
interrupt.EXTI_Line = gpio->gpioPin;
}
EXTI_Init(&interrupt);
nvic.NVIC_IRQChannel = exti_irqn;
nvic.NVIC_IRQChannelCmd = enable;
nvic.NVIC_IRQChannelPreemptionPriority = 7;
nvic.NVIC_IRQChannelSubPriority = 7;
NVIC_Init(&nvic);
*trigId = gpio->trigId;
return AJ_OK;
}