t
Fork of mbed-dev by
Diff: targets/TARGET_ONSEMI/TARGET_NCS36510/gpio_irq_api.c
- Revision:
- 150:02e0a0aed4ec
- Parent:
- 149:156823d33999
--- a/targets/TARGET_ONSEMI/TARGET_NCS36510/gpio_irq_api.c Fri Oct 28 11:17:30 2016 +0100 +++ b/targets/TARGET_ONSEMI/TARGET_NCS36510/gpio_irq_api.c Tue Nov 08 17:45:16 2016 +0000 @@ -79,17 +79,17 @@ /** Main GPIO IRQ handler called from vector table handler * - * @param gpioBase The GPIO register base address - * @return void + * @param gpioBase The GPIO register base address + * @return void */ void fGpioHandler(void) { uint8_t index; uint32_t active_interrupts = 0; - gpio_irq_event event; + gpio_irq_event event = IRQ_NONE; GpioReg_pt gpioBase; - /* Enable the GPIO clock */ + /* Enable the GPIO clock which may have been switched off by other drivers */ CLOCK_ENABLE(CLOCK_GPIO); gpioBase = GPIOREG; @@ -106,15 +106,12 @@ if ((gpioBase->IRQ_POLARITY_SET >> index) &0x01) { /* Edge triggered high */ event = IRQ_RISE; - } else if ((gpioBase->IRQ_POLARITY_CLEAR >> index) &0x01) { + } else { /* Edge triggered low */ event = IRQ_FALL; - } else { - /* Edge none */ - event = IRQ_NONE; } } - gpioBase->IRQ_CLEAR |= (0x1 << index); + gpioBase->IRQ_CLEAR = (0x1 << index); /* Call the handler registered to the pin */ irq_handler(gpioIds[index], event); @@ -145,22 +142,16 @@ /* Store the ID, this is required by registered handler function */ gpioIds[pin] = id; - /* Enable the GPIO clock */ + /* Enable the GPIO clock which may have been switched off by other drivers */ CLOCK_ENABLE(CLOCK_GPIO); /* Initialize the GPIO membase */ obj->GPIOMEMBASE = GPIOREG; /* Set default values for the pin interrupt */ - /* TODO: Only one DIO line is configured using this function; overrides other DIO line setting - * If mbed layer wants to call this function repeatedly for setting multiple DIO lines as input - * then change this setting to obj->GPIOMEMBASE->W_IN |= obj->pinMask. All parameter setting needs to change from = to |= - */ obj->GPIOMEMBASE->W_IN = obj->pinMask; - obj->GPIOMEMBASE->IRQ_ENABLE_SET = obj->pinMask; obj->GPIOMEMBASE->IRQ_EDGE = obj->pinMask; - obj->GPIOMEMBASE->IRQ_POLARITY_SET = (obj->pinMask); - obj->GPIOMEMBASE->ANYEDGE_SET = IO_NONE; + obj->GPIOMEMBASE->IRQ_POLARITY_SET = obj->pinMask; /* Register the handler for this pin */ irq_handler = handler; @@ -178,10 +169,11 @@ */ void gpio_irq_free(gpio_irq_t *obj) { - /* Enable the GPIO clock */ + /* Enable the GPIO clock which may have been switched off by other drivers */ CLOCK_ENABLE(CLOCK_GPIO); - obj->GPIOMEMBASE->W_IN = (IO_ALL ^ (obj->pinMask)); + /* Disable IRQs to indicate that it is now free */ + obj->GPIOMEMBASE->IRQ_ENABLE_CLEAR = obj->pinMask; gpioIds[obj->pin] = 0; } @@ -193,42 +185,35 @@ */ void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable) { - - /* Enable the GPIO clock */ + /* Enable the GPIO clock which may have been switched off by other drivers */ CLOCK_ENABLE(CLOCK_GPIO); - + obj->GPIOMEMBASE->IRQ_EDGE = obj->pinMask; + switch(event) { - case IRQ_RISE: - obj->GPIOMEMBASE->IRQ_EDGE = (obj->pinMask); - obj->GPIOMEMBASE->IRQ_LEVEL = (IO_ALL ^ (obj->pinMask)); - /* Enable is an integer; hence checking for 1 or 0*/ - if (enable == 1) { - /* Enable rising edge */ - obj->GPIOMEMBASE->IRQ_POLARITY_SET = (obj->pinMask); - } else if (enable == 0) { - /* Disable rising edge */ - obj->GPIOMEMBASE->IRQ_POLARITY_SET = (IO_ALL ^ (obj->pinMask)); - } - break; + case IRQ_RISE: + + /* Enable rising edge */ + obj->GPIOMEMBASE->IRQ_POLARITY_SET = obj->pinMask; + break; case IRQ_FALL: - obj->GPIOMEMBASE->IRQ_EDGE = (obj->pinMask); - obj->GPIOMEMBASE->IRQ_LEVEL = (IO_ALL ^ (obj->pinMask)); - /* Enable is an integer; hence checking for 1 or 0*/ - if (enable == 1) { - /* Enable falling edge */ - obj->GPIOMEMBASE->IRQ_POLARITY_CLEAR = (obj->pinMask); - } else if (enable == 0) { - /* Disable falling edge */ - obj->GPIOMEMBASE->IRQ_POLARITY_CLEAR = (IO_ALL ^ (obj->pinMask)); - } + + /* Enable falling edge */ + obj->GPIOMEMBASE->IRQ_POLARITY_CLEAR = obj->pinMask; break; default: /* No event is set */ break; } + /* Enable the IRQ based on enable parameter */ + if (enable) { + obj->GPIOMEMBASE->IRQ_ENABLE_SET = obj->pinMask; + } else { + + obj->GPIOMEMBASE->IRQ_ENABLE_CLEAR = obj->pinMask; + } } /** Enable GPIO IRQ @@ -238,10 +223,10 @@ */ void gpio_irq_enable(gpio_irq_t *obj) { - /* Enable the GPIO clock */ + /* Enable the GPIO clock which may have been switched off by other drivers */ CLOCK_ENABLE(CLOCK_GPIO); - obj->GPIOMEMBASE->IRQ_ENABLE_SET = (obj->pinMask); + obj->GPIOMEMBASE->IRQ_ENABLE_SET = obj->pinMask; } /** Disable GPIO IRQ @@ -251,10 +236,11 @@ */ void gpio_irq_disable(gpio_irq_t *obj) { - /* Enable the GPIO clock */ + + /* Enable the GPIO clock which may have been switched off by other drivers */ CLOCK_ENABLE(CLOCK_GPIO); - obj->GPIOMEMBASE->IRQ_ENABLE_CLEAR = (obj->pinMask); + obj->GPIOMEMBASE->IRQ_ENABLE_CLEAR = obj->pinMask; } #endif //DEVICE_INTERRUPTIN