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- init slave to get always the beginning of the records

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- start read with FCB set
- fixed double free in case of send failure
This commit is contained in:
Stefan Wahren 2012-04-28 14:09:58 +02:00
parent 41a3fa1a7b
commit 42ed80a5b0
1 changed files with 38 additions and 3 deletions
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41
mbus/mbus-protocol-aux.c
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@ -1369,9 +1369,44 @@ mbus_sendrecv_request(mbus_handle *handle, int address, mbus_frame *reply, int m
return -1;
}
frame->control = MBUS_CONTROL_MASK_REQ_UD2 | MBUS_CONTROL_MASK_DIR_M2S | MBUS_CONTROL_MASK_FCV;
//
// init slave to get really the beginning of the records
//
frame->control = MBUS_CONTROL_MASK_SND_NKE | MBUS_CONTROL_MASK_DIR_M2S;
frame->address = address;
if (debug)
printf("%s: debug: sending init frame\n", __PRETTY_FUNCTION__);
if (mbus_send_frame(handle, frame) == -1)
{
MBUS_ERROR("%s: failed to send mbus frame.\n", __PRETTY_FUNCTION__);
mbus_frame_free(frame);
return -1;
}
if (mbus_recv_frame(handle, reply) == -1)
{
MBUS_ERROR("%s: Failed to receive M-Bus response frame.\n", __PRETTY_FUNCTION__);
mbus_frame_free(frame);
return -1;
}
if (mbus_frame_type(reply) != MBUS_FRAME_TYPE_ACK)
{
MBUS_ERROR("%s: Unknown reply.\n", __PRETTY_FUNCTION__);
mbus_frame_free(frame);
return -1;
}
frame->control = MBUS_CONTROL_MASK_REQ_UD2 |
MBUS_CONTROL_MASK_DIR_M2S |
MBUS_CONTROL_MASK_FCV |
MBUS_CONTROL_MASK_FCB;
frame->address = address;
if (debug)
printf("%s: debug: sending request frame\n", __PRETTY_FUNCTION__);
@ -1379,7 +1414,7 @@ mbus_sendrecv_request(mbus_handle *handle, int address, mbus_frame *reply, int m
{
MBUS_ERROR("%s: failed to send mbus frame.\n", __PRETTY_FUNCTION__);
mbus_frame_free(frame);
retval = -1;
return -1;
}
//