FelipeMdeO opened a new issue, #14369:
URL: https://github.com/apache/nuttx/issues/14369
### Description
Hello All,
I have other doubt about spi slave driver implementation, it is related
spi_slave_driver.c file.
In current implementation we have semaphore reader:
```
/* The semphore reader */
sem_t wait;
```
It is used in `spi_slave.read` function, for instance:
```
if (priv->rx_length == 0)
{
nxmutex_unlock(&priv->lock);
if (filep->f_oflags & O_NONBLOCK)
{
return -EAGAIN;
}
ret = nxsem_wait(&priv->wait);
if (ret < 0)
{
return ret;
}
ret = nxmutex_lock(&priv->lock);
if (ret < 0)
{
spierr("Failed to get exclusive access: %d\n", ret);
return ret;
}
}
}
```
The same semaphore is handle in `spi_notify` function. But trying search
call of this function across the entire project, I cannot find any call of
`SPIS_DEV_NOTIFY`.
@Donny9 , Can you check my reasoning, please?
If so, can you give me an example of how you used the `SPIS_DEV_NOTIFY`
function?
In the lower half I'm working on, I see the `SPIS_DEV_SELECT` function call
inside the spi interrupt, but no reference to notify.
### Verification
- [X] I have verified before submitting the report.
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