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Add PICO EXTI support (#14488)

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Steve Evans 2025-06-30 02:22:26 +01:00 • committed by GitHub
parent 9fed1f9ebb
commit ac918d37fe
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GPG key ID: B5690EEEBB952194
2 changed files with 62 additions and 10 deletions
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70
src/platform/PICO/exti_pico.c
View file

@ -19,22 +19,70 @@
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <string.h>
#include "drivers/exti.h"
#include "common/utils.h"
#include "drivers/io_impl.h"
#include "hardware/gpio.h"
typedef struct {
extiCallbackRec_t* handler;
} extiChannelRec_t;
static extiChannelRec_t extiChannelRecs[DEFIO_USED_COUNT];
static uint32_t extiEventMask[DEFIO_USED_COUNT];
void EXTIConfig(IO_t io, extiCallbackRec_t *cb, int irqPriority, ioConfig_t config, extiTrigger_t trigger)
{
UNUSED(io);
UNUSED(cb);
UNUSED(irqPriority);
UNUSED(config);
UNUSED(trigger);
uint32_t gpio = IO_Pin(io);
UNUSED(irqPriority); // Just stick with default GPIO irq priority for now
UNUSED(config); // TODO consider pullup/pulldown etc. Needs fixing first in platform.h
// Ensure the GPIO is initialised and not being used for some other function
gpio_init(gpio);
extiChannelRec_t *rec = &extiChannelRecs[gpio];
rec->handler = cb;
switch(trigger) {
case BETAFLIGHT_EXTI_TRIGGER_RISING:
default:
extiEventMask[gpio] = GPIO_IRQ_EDGE_RISE;
break;
case BETAFLIGHT_EXTI_TRIGGER_FALLING:
extiEventMask[gpio] = GPIO_IRQ_EDGE_FALL;
break;
case BETAFLIGHT_EXTI_TRIGGER_BOTH:
extiEventMask[gpio] = GPIO_IRQ_EDGE_RISE | GPIO_IRQ_EDGE_FALL;
break;
}
}
static void EXTI_IRQHandler(uint gpio, uint32_t event_mask)
{
// Call the registered handler for this GPIO
if (extiChannelRecs[gpio].handler) {
extiChannelRecs[gpio].handler->fn(extiChannelRecs[gpio].handler);
}
// Acknowledge the interrupt
gpio_acknowledge_irq(gpio, event_mask);
}
void EXTIInit(void)
{
//TODO: implement
// NOOP
// Clear all the callbacks
memset(extiChannelRecs, 0, sizeof(extiChannelRecs));
// Register the shared handler for GPIO interrupts
gpio_set_irq_callback(EXTI_IRQHandler);
// Enable the interrupt
irq_set_enabled(IO_IRQ_BANK0, true);
}
void EXTIHandlerInit(extiCallbackRec_t *self, extiHandlerCallback *fn)
@ -44,6 +92,10 @@ void EXTIHandlerInit(extiCallbackRec_t *self, extiHandlerCallback *fn)
void EXTIEnable(IO_t io)
{
//TODO: implement
UNUSED(io);
gpio_set_irq_enabled(IO_Pin(io), extiEventMask[IO_Pin(io)], true);
}
void EXTIDisable(IO_t io)
{
gpio_set_irq_enabled(IO_Pin(io), 0, false);
}

2
src/platform/PICO/target/RP2350B/target.h
View file

@ -45,7 +45,7 @@
#define USBD_PRODUCT_STRING "Betaflight RP2350B"
#endif
#define USE_MULTICORE
//#define USE_MULTICORE
#define USE_IO
#define USE_UART0
#define USE_UART1