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net: coap_client: Fix CoAP client thread priority

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The default thread priority for the CoAP client thread is set to
NUM_PREEMPT_PRIORITIES which is not a valid thread priority, as the
lowest application thread priority is actually
NUM_PREEMPT_PRIORITIES - 1. Because of this, CoAP client library gave an
assert on boot if assertions were enabled.

Kconfig does not allow for arithmetics when setting integer defaults,
therefore handle this at the preprocessor stage by limiting the actual
priority assigned to the CoAP client thread to a valid range.

Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
This commit is contained in:
Robert Lubos 2025-04-02 15:14:10 +02:00 • committed by Benjamin Cabé
commit cf0b6068d2
1 changed files with 5 additions and 1 deletions
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6
subsys/net/lib/coap/coap_client.c
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@ -1139,6 +1139,10 @@ bool coap_client_has_ongoing_exchange(struct coap_client *client)
return has_ongoing_exchange(client);
}
#define COAP_CLIENT_THREAD_PRIORITY CLAMP(CONFIG_COAP_CLIENT_THREAD_PRIORITY, \
K_HIGHEST_APPLICATION_THREAD_PRIO, \
K_LOWEST_APPLICATION_THREAD_PRIO)
K_THREAD_DEFINE(coap_client_recv_thread, CONFIG_COAP_CLIENT_STACK_SIZE,
coap_client_recv, NULL, NULL, NULL,
CONFIG_COAP_CLIENT_THREAD_PRIORITY, 0, 0);
COAP_CLIENT_THREAD_PRIORITY, 0, 0);