static int event_logger_get(struct event_logger *logger,
uint16_t *event_id, uint8_t *dropped_event_count,
uint32_t *buffer, uint8_t *buffer_size)
{
int ret;
ret = sys_ring_buf_get(&logger->ring_buf, event_id, dropped_event_count,
buffer, buffer_size);
if (likely(!ret)) {
return *buffer_size;
}
switch (ret) {
case -EMSGSIZE:
/* if the user can not retrieve the message, we increase the
* semaphore to indicate that the message remains in the buffer
*/
nano_fiber_sem_give(&(logger->sync_sema));
return -EMSGSIZE;
case -EAGAIN:
return 0;
default:
return ret;
}
}
static void ipm_console_thread(void *arg1, void *arg2, void *arg3)
{
u8_t size32;
u16_t type;
int ret, key;
struct device *d;
const struct ipm_console_receiver_config_info *config_info;
struct ipm_console_receiver_runtime_data *driver_data;
int pos;
d = (struct device *)arg1;
driver_data = d->driver_data;
config_info = d->config->config_info;
ARG_UNUSED(arg2);
size32 = 0;
pos = 0;
while (1) {
k_sem_take(&driver_data->sem, K_FOREVER);
ret = sys_ring_buf_get(&driver_data->rb, &type,
(u8_t *)&config_info->line_buf[pos],
NULL, &size32);
if (ret) {
/* Shouldn't ever happen... */
printk("ipm console ring buffer error: %d\n", ret);
size32 = 0;
continue;
}
if (config_info->line_buf[pos] == '\n' ||
pos == config_info->lb_size - 2) {
if (pos != config_info->lb_size - 2) {
config_info->line_buf[pos] = '\0';
} else {
config_info->line_buf[pos + 1] = '\0';
}
if (config_info->flags & IPM_CONSOLE_PRINTK) {
printk("%s: '%s'\n", d->config->name,
config_info->line_buf);
}
if (config_info->flags & IPM_CONSOLE_STDOUT) {
printf("%s: '%s'\n", d->config->name,
config_info->line_buf);
}
pos = 0;
} else {
++pos;
}
/* ISR may have disabled the channel due to full buffer at
* some point. If that happened and there is now room,
* re-enable it.
*
* Lock interrupts to avoid pathological scenario where
* the buffer fills up in between enabling the channel and
* clearing the channel_disabled flag.
*/
if (driver_data->channel_disabled &&
sys_ring_buf_space_get(&driver_data->rb)) {
key = irq_lock();
ipm_set_enabled(driver_data->ipm_device, 1);
driver_data->channel_disabled = 0;
irq_unlock(key);
}
}
}
