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net: lwm2m: support for reading OPAQUE resources with OMA TLV

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The LwM2M stack would previously ignore all OPAQUE resources when
reading them. This meant that it was impossible to read them, even if
there was a custom read callback.

Signed-off-by: Göran Weinholt <goran.weinholt@endian.se>
This commit is contained in:
Göran Weinholt 2020-03-03 16:49:49 +01:00 • committed by Jukka Rissanen
commit 32864ecbcc
2 changed files with 11 additions and 1 deletions
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4
subsys/net/lib/lwm2m/lwm2m_engine.c
View file

@ -2106,8 +2106,10 @@ static int lwm2m_read_handler(struct lwm2m_engine_obj_inst *obj_inst,
switch (obj_field->data_type) {
/* do nothing for OPAQUE (probably has a callback) */
case LWM2M_RES_TYPE_OPAQUE:
engine_put_opaque(&msg->out, &msg->path,
(u8_t *)data_ptr,
data_len);
break;
case LWM2M_RES_TYPE_STRING:

8
subsys/net/lib/lwm2m/lwm2m_rw_oma_tlv.c
View file

@ -559,6 +559,13 @@ static size_t put_bool(struct lwm2m_output_context *out,
return put_s8(out, path, value_s8);
}
static size_t put_opaque(struct lwm2m_output_context *out,
struct lwm2m_obj_path *path,
char *buf, size_t buflen)
{
return put_string(out, path, buf, buflen);
}
static size_t get_number(struct lwm2m_input_context *in, s64_t *value,
u8_t max_len)
{
@ -764,6 +771,7 @@ const struct lwm2m_writer oma_tlv_writer = {
.put_float32fix = put_float32fix,
.put_float64fix = put_float64fix,
.put_bool = put_bool,
.put_opaque = put_opaque,
};
const struct lwm2m_reader oma_tlv_reader = {