You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
141 lines
4.1 KiB
141 lines
4.1 KiB
//
|
|
// Created by MightyPork on 2017/12/19.
|
|
//
|
|
|
|
#include <malloc.h>
|
|
#include <assert.h>
|
|
|
|
#define GEX_H // to allow including other headers
|
|
#include "gex_defines.h"
|
|
#include "gex_helpers.h"
|
|
#include "gex_message_types.h"
|
|
|
|
/**
|
|
* Low level query
|
|
*
|
|
* @param unit - GEX unit to address. The unit is available in userdata1 of the response message, if any
|
|
* @param cmd - command byte
|
|
* @param payload - payload buffer
|
|
* @param len - payload length
|
|
* @param lst - TF listener to handle the response, can be NULL
|
|
* @param userdata2 userdata2 argument for the TF listener's message
|
|
*/
|
|
static void GEX_LL_Query(GexUnit *unit, uint8_t cmd, const uint8_t *payload, uint32_t len, TF_Listener lst, void *userdata2)
|
|
{
|
|
assert(unit != NULL);
|
|
assert(unit->gex != NULL);
|
|
|
|
GexClient *gex = unit->gex;
|
|
|
|
uint8_t callsign = unit->callsign;
|
|
assert(callsign != 0);
|
|
uint8_t *pld = malloc(len + 2);
|
|
assert(pld != NULL);
|
|
{
|
|
// prefix the actual payload with the callsign and command bytes.
|
|
// TODO provide TF API for sending the payload externally in smaller chunks? Will avoid the malloc here
|
|
pld[0] = callsign;
|
|
pld[1] = cmd;
|
|
memcpy(pld + 2, payload, len);
|
|
|
|
TF_Msg msg;
|
|
TF_ClearMsg(&msg);
|
|
msg.type = MSG_UNIT_REQUEST;
|
|
msg.data = pld;
|
|
msg.len = (TF_LEN) (len + 2);
|
|
msg.userdata = unit;
|
|
msg.userdata2 = userdata2;
|
|
TF_Query(gex->tf, &msg, lst, 0);
|
|
}
|
|
free(pld);
|
|
}
|
|
|
|
/** Send with no listener, don't wait for response */
|
|
void GEX_Send(GexUnit *unit, uint8_t cmd, const uint8_t *payload, uint32_t len)
|
|
{
|
|
assert(unit != NULL);
|
|
assert(unit->gex != NULL);
|
|
|
|
GEX_LL_Query(unit, cmd, payload, len, NULL, NULL);
|
|
}
|
|
|
|
/** listener for the synchronous query functionality */
|
|
static TF_Result sync_query_lst(TinyFrame *tf, TF_Msg *msg)
|
|
{
|
|
GexClient *gex = tf->userdata;
|
|
assert(gex != NULL);
|
|
|
|
// clone the message
|
|
gex->sync_query_response.len = msg->len;
|
|
gex->sync_query_response.unit = msg->userdata;
|
|
gex->sync_query_response.type = msg->type;
|
|
// clone the buffer
|
|
if (msg->len > 0) memcpy(gex->sync_query_buffer, msg->data, msg->len);
|
|
// re-link the buffer
|
|
gex->sync_query_response.payload = gex->sync_query_buffer;
|
|
gex->sync_query_ok = true;
|
|
}
|
|
|
|
/** Static query */
|
|
GexMsg GEX_Query(GexUnit *unit, uint8_t cmd, const uint8_t *payload, uint32_t len)
|
|
{
|
|
assert(unit != NULL);
|
|
assert(unit->gex != NULL);
|
|
|
|
GexClient *gex = unit->gex;
|
|
|
|
gex->sync_query_ok = false;
|
|
|
|
// Default response that will be used if nothing is received
|
|
gex->sync_query_response.unit = unit;
|
|
gex->sync_query_response.type = MSG_ERROR;
|
|
sprintf((char *) gex->sync_query_buffer, "TIMEOUT");
|
|
gex->sync_query_response.len = (uint32_t) strlen("TIMEOUT");
|
|
gex->sync_query_response.payload = gex->sync_query_buffer;
|
|
|
|
GEX_LL_Query(unit, cmd, payload, len, sync_query_lst, NULL);
|
|
GEX_Poll(gex);
|
|
|
|
if (!gex->sync_query_ok) {
|
|
fprintf(stderr, "No response to query of unit %s!", unit->name);
|
|
}
|
|
|
|
return gex->sync_query_response;
|
|
}
|
|
|
|
|
|
/** listener for the synchronous query functionality */
|
|
static TF_Result async_query_lst(TinyFrame *tf, TF_Msg *msg)
|
|
{
|
|
GexMsg gexMsg;
|
|
|
|
// clone the message
|
|
gexMsg.len = msg->len;
|
|
gexMsg.session = msg->frame_id;
|
|
gexMsg.unit = msg->userdata; // gex is accessible via the unit
|
|
gexMsg.type = msg->type;
|
|
gexMsg.payload = (uint8_t *) msg->data;
|
|
|
|
GexEventListener lst = msg->userdata2;
|
|
assert(lst != NULL);
|
|
|
|
lst(gexMsg);
|
|
}
|
|
|
|
/** Sync query, without poll */
|
|
void GEX_QueryAsync(GexUnit *unit, uint8_t cmd, const uint8_t *payload, uint32_t len, GexEventListener lst)
|
|
{
|
|
assert(unit != NULL);
|
|
assert(unit->gex != NULL);
|
|
|
|
GexClient *gex = unit->gex;
|
|
gex->sync_query_ok = false;
|
|
memset(&gex->sync_query_response, 0, sizeof(GexMsg));
|
|
|
|
// Default response that will be used if nothing is received
|
|
gex->sync_query_response.type = MSG_ERROR;
|
|
sprintf((char *) gex->sync_query_buffer, "TIMEOUT");
|
|
gex->sync_query_response.len = (uint32_t) strlen("TIMEOUT");
|
|
|
|
GEX_LL_Query(unit, cmd, payload, len, async_query_lst, lst);
|
|
}
|
|
|