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iio: Allow mraa_iio_trigger_buffer to handle void* args

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Previously, mraa_iio_trigger_buffer took a void* args but did not use
this.  Included implementation to allow user to pass a void* to this
method and have the corresponding pointer returned in the interrupt
handler.

Signed-off-by: Noel Eck <noel.eck@intel.com>
This commit is contained in:
Noel Eck
2017-08-30 10:56:09 -07:00
parent 1217c5c034
commit 65e30bf7d3
4 changed files with 13 additions and 12 deletions
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16
examples/iio_driver.c
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@@ -46,16 +46,15 @@ printword(uint16_t input, mraa_iio_channel* chan)
printf(" value = %05f\n", (float) res);
}
mraa_iio_context iio_device0;
mraa_iio_context iio_device6;
void
interrupt(char* data)
interrupt(char* data, void* args)
{
mraa_iio_channel* channels = mraa_iio_get_channels(iio_device0);
mraa_iio_context thisdevice = (mraa_iio_context)args;
mraa_iio_channel* channels = mraa_iio_get_channels(thisdevice);
int i = 0;
for (; i < mraa_iio_get_channel_count(iio_device0); i++) {
for (; i < mraa_iio_get_channel_count(thisdevice); i++) {
if (channels[i].enabled) {
printf("channel %d - bytes %d\n", channels[i].index, channels[i].bytes);
switch (channels[i].bytes) {
@@ -87,7 +86,8 @@ int
main()
{
//! [Interesting]
iio_device0 = mraa_iio_init(0);
mraa_iio_context iio_device0 = mraa_iio_init(0);
if (iio_device0 == NULL) {
return EXIT_FAILURE;
}
@@ -116,7 +116,7 @@ main()
fprintf(stdout, "IIO read %d\n", iio_int);
}
if (mraa_iio_trigger_buffer(iio_device0, interrupt, NULL) == MRAA_SUCCESS) {
if (mraa_iio_trigger_buffer(iio_device0, interrupt, (void*)iio_device0) == MRAA_SUCCESS) {
sleep(100);
return EXIT_SUCCESS;
}