#define MAX_SIZE 64
#define POLL_TIMEOUT
+/**
+ * A strucutre representing a gpio pin.
+ */
+
+struct _gpio {
+ /*@{*/
+ int pin; /**< the pin number, as known to the os. */
+ int value_fp; /**< the file pointer to the value of the gpio */
+#ifdef SWIGPYTHON
+ PyObject *isr; /**< the interupt service request */
+#else
+ void (* isr)(); /**< the interupt service request */
+#endif
+ pthread_t thread_id; /**< the isr handler thread id */
+ int isr_value_fp; /**< the isr file pointer on the value */
+ /*@}*/
+};
+
static maa_result_t
-maa_gpio_get_valfp(maa_gpio_context *dev)
+maa_gpio_get_valfp(maa_gpio_context dev)
{
char bu[MAX_SIZE];
sprintf(bu, SYSFS_CLASS_GPIO "/gpio%d/value", dev->pin);
return MAA_SUCCESS;
}
-maa_gpio_context*
+maa_gpio_context
maa_gpio_init(int pin)
{
int pinm = maa_check_gpio(pin);
return maa_gpio_init_raw(pinm);
}
-maa_gpio_context*
+maa_gpio_context
maa_gpio_init_raw(int pin)
{
if (pin < 0)
char bu[MAX_SIZE];
int length;
- maa_gpio_context* dev = (maa_gpio_context*) malloc(sizeof(maa_gpio_context));
+ maa_gpio_context dev = (maa_gpio_context) malloc(sizeof(struct _gpio));
memset(dev, 0, sizeof(maa_gpio_context));
dev->value_fp = -1;
dev->isr_value_fp = -1;
static void*
maa_gpio_interrupt_handler(void* arg)
{
- maa_gpio_context* dev = (maa_gpio_context*) arg;
+ maa_gpio_context dev = (maa_gpio_context) arg;
maa_result_t ret;
// open gpio value with open(3)
}
maa_result_t
-maa_gpio_edge_mode(maa_gpio_context *dev, gpio_edge_t mode)
+maa_gpio_edge_mode(maa_gpio_context dev, gpio_edge_t mode)
{
if (dev->value_fp != -1) {
close(dev->value_fp);
}
maa_result_t
-maa_gpio_isr(maa_gpio_context *dev, gpio_edge_t mode, void (*fptr)(void))
+maa_gpio_isr(maa_gpio_context dev, gpio_edge_t mode, void (*fptr)(void))
{
// we only allow one isr per maa_gpio_context
if (dev->thread_id != 0) {
}
maa_result_t
-maa_gpio_isr_exit(maa_gpio_context *dev)
+maa_gpio_isr_exit(maa_gpio_context dev)
{
maa_result_t ret = MAA_SUCCESS;
}
maa_result_t
-maa_gpio_mode(maa_gpio_context *dev, gpio_mode_t mode)
+maa_gpio_mode(maa_gpio_context dev, gpio_mode_t mode)
{
if (dev->value_fp != -1) {
close(dev->value_fp);
}
maa_result_t
-maa_gpio_dir(maa_gpio_context *dev, gpio_dir_t dir)
+maa_gpio_dir(maa_gpio_context dev, gpio_dir_t dir)
{
if (dev == NULL) {
return MAA_ERROR_INVALID_HANDLE;
}
int
-maa_gpio_read(maa_gpio_context *dev)
+maa_gpio_read(maa_gpio_context dev)
{
if (dev->value_fp == -1) {
if (maa_gpio_get_valfp(dev) != MAA_SUCCESS) {
}
maa_result_t
-maa_gpio_write(maa_gpio_context *dev, int value)
+maa_gpio_write(maa_gpio_context dev, int value)
{
if (dev->value_fp == -1) {
maa_gpio_get_valfp(dev);
}
maa_result_t
-maa_gpio_unexport(maa_gpio_context *dev)
+maa_gpio_unexport(maa_gpio_context dev)
{
FILE *unexport_f;
}
maa_result_t
-maa_gpio_close(maa_gpio_context *dev)
+maa_gpio_close(maa_gpio_context dev)
{
if (dev->value_fp != -1) {
close(dev->value_fp);