2 * Author: Brendan Le Foll
3 * Copyright (c) 2015 Intel Corporation.
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * The above copyright notice and this permission notice shall be
14 * included in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 printword(uint16_t input, mraa_iio_channel *chan)
34 input = be16toh(input);
36 input = le16toh(input);
39 input >>= chan->shift;
42 res = (int16_t)(input << (16 - chan->bits_used)) >> (16 - chan->bits_used);
46 printf(" value = %05f\n", (float)res);
49 mraa_iio_context iio_device0;
50 mraa_iio_context iio_device6;
55 mraa_iio_channel* channels = mraa_iio_get_channels(iio_device0);
58 for (i; i < mraa_iio_get_channel_count(iio_device0); i++) {
59 if (channels[i].enabled) {
60 printf("channel %d - bytes %d\n", channels[i].index, channels[i].bytes);
61 switch (channels[i].bytes) {
63 printword(*(uint16_t *)(data + channels[i].location), &channels[i]);
69 void event_interrupt(struct iio_event_data* data)
78 mraa_iio_event_extract_event(data, &chan_type, &modifier, &type, &direction, &channel, &channel2, &different);
80 printf("event time %lld id %lld extracted chan_type %d modifier %d type %d direction %d channel %d channel2 %d different %d\n", data->timestamp, data->id, chan_type, modifier, type, direction, channel, channel2, different);
87 iio_device0 = mraa_iio_init(0);
88 if (iio_device0 == NULL) {
93 mraa_result_t ret = mraa_iio_read(iio_device0, "in_voltage0_raw", &iio_value);
94 if (ret == MRAA_SUCCESS) {
95 fprintf(stdout, "IIO read %f\n", iio_value);
98 if (mraa_iio_trigger_buffer(iio_device0, interrupt, NULL) == MRAA_SUCCESS) {
104 struct iio_event_data event;
105 iio_device6 = mraa_iio_init(6);
106 if (iio_device6 == NULL) {
109 mraa_iio_event_write(iio_device6, "in_proximity2_thresh_either_en", "1");
112 // Blocking until event fired
113 if (mraa_iio_event_poll(iio_device6, &event) == MRAA_SUCCESS) {
114 event_interrupt(&event); //just to show data
117 if (mraa_iio_event_setup_callback(iio_device6, event_interrupt, NULL) == MRAA_SUCCESS) {