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Last commit 20 Feb 2019 by 
mbed official
Diff: targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/gpio_irq_api.c
- Revision:
- 300:55638feb26a4
- Parent:
- 285:31249416b6f9
--- a/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/gpio_irq_api.c Wed Aug 27 04:00:07 2014 +0100
+++ b/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/gpio_irq_api.c Wed Aug 27 08:45:06 2014 +0100
@@ -23,103 +23,105 @@
static uint32_t channel_ids[CHANNEL_NUM] = {0}; //each pin will be given an id, if id is 0 the pin can be ignored.
static uint8_t channel_enabled[CHANNEL_NUM] = {0};
-static uint32_t portRISE= 0;
-static uint32_t portFALL= 0;
+static uint32_t portRISE = 0;
+static uint32_t portFALL = 0;
static gpio_irq_handler irq_handler;
#ifdef __cplusplus
extern "C" {
-#endif
-void GPIOTE_IRQHandler(void){
- volatile uint32_t newVal = NRF_GPIO->IN;
-
- if ( (NRF_GPIOTE->EVENTS_PORT != 0) && ( (NRF_GPIOTE->INTENSET & GPIOTE_INTENSET_PORT_Msk) != 0) ){
- NRF_GPIOTE->EVENTS_PORT = 0;
-
- for(uint8_t i=0;i<31;i++){
- if(channel_ids[i]>0){
- if(channel_enabled[i]){
+#endif
+void GPIOTE_IRQHandler(void)
+{
+ volatile uint32_t newVal = NRF_GPIO->IN;
+
+ if ((NRF_GPIOTE->EVENTS_PORT != 0) && ((NRF_GPIOTE->INTENSET & GPIOTE_INTENSET_PORT_Msk) != 0)) {
+ NRF_GPIOTE->EVENTS_PORT = 0;
+
+ for (uint8_t i = 0; i<31; i++) {
+ if (channel_ids[i]>0) {
+ if (channel_enabled[i]) {
if( ((newVal>>i)&1) && ( ( (NRF_GPIO->PIN_CNF[i] >>GPIO_PIN_CNF_SENSE_Pos) & GPIO_PIN_CNF_SENSE_Low) != GPIO_PIN_CNF_SENSE_Low) && ( (portRISE>>i)&1) ){
- irq_handler(channel_ids[i], IRQ_RISE);
- }
- else if( ( ((newVal>>i)&1) == 0) && ( ( (NRF_GPIO->PIN_CNF[i] >>GPIO_PIN_CNF_SENSE_Pos)&GPIO_PIN_CNF_SENSE_Low) == GPIO_PIN_CNF_SENSE_Low) && ( (portFALL>>i)&1) ){
- irq_handler(channel_ids[i], IRQ_FALL);
- }
+ irq_handler(channel_ids[i], IRQ_RISE);
+ } else if ((((newVal >> i) & 1) == 0) &&
+ (((NRF_GPIO->PIN_CNF[i] >> GPIO_PIN_CNF_SENSE_Pos) & GPIO_PIN_CNF_SENSE_Low) == GPIO_PIN_CNF_SENSE_Low) &&
+ ((portFALL >> i) & 1)) {
+ irq_handler(channel_ids[i], IRQ_FALL);
+ }
}
-
- if(NRF_GPIO->PIN_CNF[i] &GPIO_PIN_CNF_SENSE_Msk){
+
+ if (NRF_GPIO->PIN_CNF[i] & GPIO_PIN_CNF_SENSE_Msk) {
NRF_GPIO->PIN_CNF[i] &= ~(GPIO_PIN_CNF_SENSE_Msk);
-
- if(newVal>>i &1){
- NRF_GPIO->PIN_CNF[i] |= (GPIO_PIN_CNF_SENSE_Low << GPIO_PIN_CNF_SENSE_Pos) ;
- }
- else{
- NRF_GPIO->PIN_CNF[i] |= (GPIO_PIN_CNF_SENSE_High << GPIO_PIN_CNF_SENSE_Pos) ;
+
+ if (newVal >> i & 1) {
+ NRF_GPIO->PIN_CNF[i] |= (GPIO_PIN_CNF_SENSE_Low << GPIO_PIN_CNF_SENSE_Pos);
+ } else {
+ NRF_GPIO->PIN_CNF[i] |= (GPIO_PIN_CNF_SENSE_High << GPIO_PIN_CNF_SENSE_Pos);
}
}
}
- }
- }
-}
-#ifdef __cplusplus
-}
-#endif
-
-int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32_t id) {
- if (pin == NC) {
- return -1;
- }
-
- irq_handler = handler;
- obj->ch = pin;
- NRF_GPIOTE->EVENTS_PORT = 0;
- channel_ids[pin] = id;
- channel_enabled[pin] = 1;
- NRF_GPIOTE->INTENSET = GPIOTE_INTENSET_PORT_Set<<GPIOTE_INTENSET_PORT_Pos;
-
- NVIC_SetPriority(GPIOTE_IRQn, 3);
- NVIC_EnableIRQ (GPIOTE_IRQn);
- return 0;
-}
-
-void gpio_irq_free(gpio_irq_t *obj) {
- channel_ids[obj->ch] = 0;
-}
-
-void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable) {
- NRF_GPIO->PIN_CNF[obj->ch] &= ~(GPIO_PIN_CNF_SENSE_Msk);
- if(enable){
- if(event == IRQ_RISE){
- portRISE |= (1<<obj->ch);
- }
- else if(event == IRQ_FALL){
- portFALL |= (1<<obj->ch);
- }
- }
- else{
- if(event == IRQ_RISE){
- portRISE &= ~(1<<obj->ch);
- }
- else if(event == IRQ_FALL){
- portFALL &= ~(1<<obj->ch);
- }
-
- }
-
- if( ( (portRISE>>obj->ch) & 1) || ( (portFALL>>obj->ch) & 1) ){
- if((NRF_GPIO->IN>>obj->ch)&1){
- NRF_GPIO->PIN_CNF[obj->ch] |= (GPIO_PIN_CNF_SENSE_Low << GPIO_PIN_CNF_SENSE_Pos);// | (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos);
- }
- else{
- NRF_GPIO->PIN_CNF[obj->ch] |= (GPIO_PIN_CNF_SENSE_High << GPIO_PIN_CNF_SENSE_Pos) ;//| (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos);
}
}
}
-void gpio_irq_enable(gpio_irq_t *obj) {
+#ifdef __cplusplus
+}
+#endif
+
+int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32_t id)
+{
+ if (pin == NC) {
+ return -1;
+ }
+
+ irq_handler = handler;
+ obj->ch = pin;
+ NRF_GPIOTE->EVENTS_PORT = 0;
+ channel_ids[pin] = id;
+ channel_enabled[pin] = 1;
+ NRF_GPIOTE->INTENSET = GPIOTE_INTENSET_PORT_Set << GPIOTE_INTENSET_PORT_Pos;
+
+ NVIC_SetPriority(GPIOTE_IRQn, 3);
+ NVIC_EnableIRQ (GPIOTE_IRQn);
+ return 0;
+}
+
+void gpio_irq_free(gpio_irq_t *obj)
+{
+ channel_ids[obj->ch] = 0;
+}
+
+void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable)
+{
+ NRF_GPIO->PIN_CNF[obj->ch] &= ~(GPIO_PIN_CNF_SENSE_Msk);
+ if (enable) {
+ if (event == IRQ_RISE) {
+ portRISE |= (1 << obj->ch);
+ } else if (event == IRQ_FALL) {
+ portFALL |= (1 << obj->ch);
+ }
+ } else {
+ if (event == IRQ_RISE) {
+ portRISE &= ~(1 << obj->ch);
+ } else if (event == IRQ_FALL) {
+ portFALL &= ~(1 << obj->ch);
+ }
+ }
+
+ if (((portRISE >> obj->ch) & 1) || ((portFALL >> obj->ch) & 1)) {
+ if ((NRF_GPIO->IN >> obj->ch) & 1) {
+ NRF_GPIO->PIN_CNF[obj->ch] |= (GPIO_PIN_CNF_SENSE_Low << GPIO_PIN_CNF_SENSE_Pos); // | (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos);
+ } else {
+ NRF_GPIO->PIN_CNF[obj->ch] |= (GPIO_PIN_CNF_SENSE_High << GPIO_PIN_CNF_SENSE_Pos); //| (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos);
+ }
+ }
+}
+
+void gpio_irq_enable(gpio_irq_t *obj)
+{
channel_enabled[obj->ch] = 1;
}
-void gpio_irq_disable(gpio_irq_t *obj) {
+void gpio_irq_disable(gpio_irq_t *obj)
+{
channel_enabled[obj->ch] = 0;
}
