lby/mr-library
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

1.PIN设备新增外部中断独立回调函数。

Browse Source 
2.新增PIN设备使用文档。
This commit is contained in:
MacRsh
2023-12-05 00:37:13 +08:00
parent 47578034ea
commit d73b36edf6
5 changed files with 378 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

72
device/pin.c
View File

@@ -10,6 +10,14 @@
#ifdef MR_USING_PIN
struct pin_irq
{
struct mr_list list;
int number;
int desc;
int (*call)(int desc, void *args);
};
static ssize_t mr_pin_read(struct mr_dev *dev, int off, void *buf, size_t size, int async)
{
struct mr_pin *pin = (struct mr_pin *)dev;
@@ -71,7 +79,49 @@ static int mr_pin_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
return MR_EINVAL;
}
return ops->configure(pin, off, mode);
/* Configure pin mode */
int ret = ops->configure(pin, off, mode);
if (ret != MR_EOK)
{
return ret;
}
/* If the irq exists, update it */
struct mr_list *list = MR_NULL;
for (list = pin->irq_list.next; list != &pin->irq_list; list = list->next)
{
struct pin_irq *irq = (struct pin_irq *)mr_container_of(list, struct pin_irq, list);
if (irq->number == off)
{
if (mode < MR_PIN_MODE_IRQ_RISING)
{
/* Remove irq */
mr_list_remove(list);
mr_free(irq);
} else
{
/* Update irq */
irq->desc = pin->dev.rd_call.desc;
irq->call = pin->dev.rd_call.call;
}
return MR_EOK;
}
}
/* If not exist, allocate new irq */
if (mode >= MR_PIN_MODE_IRQ_RISING)
{
struct pin_irq *irq = (struct pin_irq *)mr_malloc(sizeof(struct pin_irq));
if (irq != MR_NULL)
{
mr_list_init(&irq->list);
irq->number = off;
irq->desc = dev->rd_call.desc;
irq->call = dev->rd_call.call;
mr_list_insert_before(&pin->irq_list, &irq->list);
}
}
return MR_EOK;
}
return MR_EINVAL;
}
@@ -85,11 +135,26 @@ static int mr_pin_ioctl(struct mr_dev *dev, int off, int cmd, void *args)
static ssize_t mr_pin_isr(struct mr_dev *dev, int event, void *args)
{
struct mr_pin *pin = (struct mr_pin *)dev;
switch (event)
{
case MR_ISR_PIN_RD_INT:
{
return (ssize_t)*(int *)args;
ssize_t number = *(int *)args;
/* If the irq exists, call it */
struct mr_list *list = MR_NULL;
for (list = pin->irq_list.next; list != &pin->irq_list; list = list->next)
{
struct pin_irq *irq = (struct pin_irq *)mr_container_of(list, struct pin_irq, list);
if (irq->number == number)
{
irq->call(irq->desc, &number);
return MR_EEXIST;
}
}
return number;
}
default:
@@ -125,6 +190,9 @@ int mr_pin_register(struct mr_pin *pin, const char *name, struct mr_drv *drv)
mr_assert(drv != MR_NULL);
mr_assert(drv->ops != MR_NULL);
/* Initialize the fields */
mr_list_init(&pin->irq_list);
/* Register the pin */
return mr_dev_register(&pin->dev, name, Mr_Dev_Type_Pin, MR_SFLAG_RDWR, &ops, drv);
}