#include "dirent.h"
#include <string.h>
#include <poll.h>
-#include <stropts.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
#define MAX_SIZE 128
#define IIO_DEVICE "iio:device"
mraa_iio_context
mraa_iio_init(int device)
{
- if (device > plat_iio->iio_device_count) {
+ if (plat_iio->iio_device_count == 0 || device >= plat_iio->iio_device_count) {
return NULL;
}
if (fd > 0) {
if (read(fd, readbuf, 2 * sizeof(char)) != 2) {
syslog(LOG_ERR, "iio: Failed to read a sensible value from sysfs");
+ free(str);
return -1;
}
chan->enabled = (int) strtol(readbuf, NULL, 10);
}
mraa_result_t
-mraa_iio_read_float(mraa_iio_context dev, const char* filename, float* data)
+mraa_iio_read_float(mraa_iio_context dev, const char* attr_name, float* data)
{
char buf[MAX_SIZE];
- snprintf(buf, MAX_SIZE, IIO_SYSFS_DEVICE "%d/%s", dev->num, filename);
- FILE* fp = fopen(buf, "r");
- if (fp != NULL) {
- fscanf(fp, "%f\n", data);
- fclose(fp);
- return MRAA_SUCCESS;
- }
- return MRAA_ERROR_UNSPECIFIED;
+ mraa_result_t result = mraa_iio_read_string(dev, attr_name, buf, MAX_SIZE-1);
+ if (result != MRAA_SUCCESS)
+ return result;
+ int status = sscanf(buf, "%f", data);
+ result = status == 1 ? MRAA_SUCCESS : MRAA_ERROR_UNSPECIFIED;
+ return result;
}
+
mraa_result_t
-mraa_iio_read_integer(mraa_iio_context dev, const char* filename, int* data)
+mraa_iio_read_int(mraa_iio_context dev, const char* attr_name, int* data)
{
char buf[MAX_SIZE];
- snprintf(buf, MAX_SIZE, IIO_SYSFS_DEVICE "%d/%s", dev->num, filename);
- FILE* fp = fopen(buf, "r");
- if (fp != NULL) {
- fscanf(fp, "%d\n", data);
- fclose(fp);
- return MRAA_SUCCESS;
- }
- return MRAA_ERROR_UNSPECIFIED;
+ mraa_result_t result = mraa_iio_read_string(dev, attr_name, buf, MAX_SIZE-1);
+ if (result != MRAA_SUCCESS)
+ return result;
+ int status = sscanf(buf, "%d", data);
+ result = status == 1 ? MRAA_SUCCESS : MRAA_ERROR_UNSPECIFIED;
+ return result;
}
mraa_result_t
-mraa_iio_read_string(mraa_iio_context dev, const char* filename, char* data)
+mraa_iio_read_string(mraa_iio_context dev, const char* attr_name, char* data, int max_len)
{
char buf[MAX_SIZE];
- snprintf(buf, MAX_SIZE, IIO_SYSFS_DEVICE "%d/%s", dev->num, filename);
- FILE* fp = fopen(buf, "r");
- if (fp != NULL) {
- fscanf(fp, "%s\n", data);
- fclose(fp);
- return MRAA_SUCCESS;
+ mraa_result_t result = MRAA_ERROR_UNSPECIFIED;
+ snprintf(buf, MAX_SIZE, IIO_SYSFS_DEVICE "%d/%s", dev->num, attr_name);
+ int fd = open(buf, O_RDONLY);
+ if (fd != -1) {
+ ssize_t len = read(fd, data, max_len);
+ if (len > 0)
+ result = MRAA_SUCCESS;
+ close(fd);
}
- return MRAA_ERROR_UNSPECIFIED;
+ return result;
+
}
mraa_result_t
}
mraa_result_t
-mraa_iio_write_integer(mraa_iio_context dev, const char* filename, const int data)
+mraa_iio_write_int(mraa_iio_context dev, const char* attr_name, const int data)
{
char buf[MAX_SIZE];
- snprintf(buf, MAX_SIZE, IIO_SYSFS_DEVICE "%d/%s", dev->num, filename);
- FILE* fp = fopen(buf, "w");
- if (fp != NULL) {
- fprintf(fp, "%d", data);
- fclose(fp);
- return MRAA_SUCCESS;
- }
- return MRAA_ERROR_UNSPECIFIED;
+ snprintf(buf, MAX_SIZE, "%d", data);
+ return mraa_iio_write_string(dev, attr_name, buf);
}
mraa_result_t
char buf[MAX_SIZE];
mraa_result_t result = MRAA_ERROR_UNSPECIFIED;
snprintf(buf, MAX_SIZE, IIO_SYSFS_DEVICE "%d/%s", dev->num, attr_name);
- int fh = open(buf, O_RDWR);
- if (fh != -1) {
+ int fd = open(buf, O_WRONLY);
+ if (fd != -1) {
size_t len = strlen(data);
- ssize_t status = write(fh, data, len);
- printf("mraa_iio_write_string status %d\n", status);
+ ssize_t status = write(fd, data, len);
if (status == len)
result = MRAA_SUCCESS;
+ close(fd);
}
return result;
}
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
// only can process if readsize >= enabled channel's datasize
for (i = 0; i < (read_size / dev->datasize); i++) {
- dev->isr(&data);
+ dev->isr((void*)&data);
}
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
} else {
for (;;) {
if (mraa_iio_event_poll_nonblock(dev->fp_event, &data) == MRAA_SUCCESS) {
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
- dev->isr_event(&data);
+ dev->isr_event(&data, dev->isr_args);
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
} else {
// we must have got an error code so die nicely
}
mraa_result_t
-mraa_iio_event_setup_callback(mraa_iio_context dev, void (*fptr)(struct iio_event_data* data), void* args)
+mraa_iio_event_setup_callback(mraa_iio_context dev, void (*fptr)(struct iio_event_data* data, void* args), void* args)
{
int ret;
char bu[MAX_SIZE];
}
dev->isr_event = fptr;
+ dev->isr_args = args;
pthread_create(&dev->thread_id, NULL, mraa_iio_event_handler, (void*) dev);
return MRAA_SUCCESS;
break;
}
chan_num = ((int) strtol(readbuf, NULL, 10));
- chan = &dev->channels[chan_num];
- chan->index = chan_num;
- close(fd);
+ if (chan_num >= 0 && chan_num < dev->chan_num) {
+ chan = &dev->channels[chan_num];
+ chan->index = chan_num;
+ close(fd);
- buf[(strlen(buf) - 5)] = '\0';
- char* str = strdup(buf);
- // grab the enable flag of channel
- snprintf(buf, MAX_SIZE, "%sen", str);
- fd = open(buf, O_RDONLY);
- if (fd > 0) {
- if (read(fd, readbuf, 2 * sizeof(char)) != 2) {
- syslog(LOG_ERR, "iio: Failed to read a sensible value from sysfs");
- return -1;
+ buf[(strlen(buf) - 5)] = '\0';
+ char* str = strdup(buf);
+ // grab the enable flag of channel
+ snprintf(buf, MAX_SIZE, "%sen", str);
+ fd = open(buf, O_RDONLY);
+ if (fd > 0) {
+ if (read(fd, readbuf, 2 * sizeof(char)) != 2) {
+ syslog(LOG_ERR, "iio: Failed to read a sensible value from sysfs");
+ free(str);
+ return -1;
+ }
+ chan->enabled = (int) strtol(readbuf, NULL, 10);
+ // only calculate enable buffer size for trigger buffer extract data
+ if (chan->enabled) {
+ dev->datasize += chan->bytes;
+ }
+ close(fd);
}
- chan->enabled = (int) strtol(readbuf, NULL, 10);
- // only calculate enable buffer size for trigger buffer extract data
- if (chan->enabled) {
- dev->datasize += chan->bytes;
- }
- close(fd);
+ // clean up str var
+ free(str);
}
- // clean up str var
- free(str);
}
}
}
}
return MRAA_SUCCESS;
}
-#if 0
-// does stop make any sense on iio devices?
+
mraa_result_t
-mraa_iio_stop(mraa_iio_context dev)
+mraa_iio_close(mraa_iio_context dev)
{
+ free(dev->channels);
return MRAA_SUCCESS;
}
-#endif
projects / contrib / mraa.git / blobdiff