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(hopefully) better msg tracking

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This commit is contained in:
Morgan 'ARR\!' Allen 2020-04-27 21:24:19 -07:00
parent 3ffaf5554d
commit ed19a5758d
2 changed files with 40 additions and 10 deletions
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2
include/lorcomm.h
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@ -36,6 +36,8 @@ enum lora_msg_type {
ROUTING,
};
extern uint8_t lormac[3];
void lorcomm_handle_receive(uint8_t size);
void lorcomm_send_message(lora32_cfg_t *lora, char *text);

48
main/lorcomm.c
View file

@ -9,9 +9,23 @@
#define MSG_ID_TRACK (16)
typedef struct {
uint8_t mac[3];
uint8_t ids[MSG_ID_TRACK];
} id_cache_t;
uint8_t mac[6] = {0};
static uint8_t msg_id = 1;
uint8_t msg_track[MSG_ID_TRACK] = { 0 };
id_cache_t id_cache[MSG_ID_TRACK] = { 0 };
uint8_t acmp(uint8_t a[], uint8_t b[], uint8_t len) {
for(uint8_t i = 0; i < len; i++) {
if(a[i] != b[i]) return 0;
}
return 1;
}
void lorcomm_handle_receive(uint8_t size) {
printf("packet size: %d\n", size);
@ -27,21 +41,35 @@ void lorcomm_handle_receive(uint8_t size) {
ESP_LOGI(TAG, "[%02X:%02X:%02X] id: %02d type: %02X", packet->src[0], packet->src[1], packet->src[2], packet->id, packet->type);
for(uint8_t i = 0; i < MSG_ID_TRACK; i++) {
if(msg_track[i] == packet->id) {
ESP_LOGI(TAG, "already seen packet, not relaying");
goto receive_cleanup;
} else if(msg_track[i] == 0) {
ESP_LOGI(TAG, "adding id to tracking");
if(id_cache[i].mac[0]+id_cache[i].mac[1]+id_cache[i].mac[2] == 0) {
memcpy(id_cache[i].mac, &packet->src, 3);
// add id to array
msg_track[i] = packet->id;
// set next in queue to zero, rolling over as needed
msg_track[(i + 1) % MSG_ID_TRACK] = 0;
// this is assumed to be empty
id_cache[i].ids[0] = packet->id;
ESP_LOGI(TAG, "adding new tracking entity");
break;
}
for(uint8_t j = 0; j < MSG_ID_TRACK; j++) {
if(id_cache[i].ids[j] == packet->id) {
ESP_LOGI(TAG, "already seen packet, not relaying");
goto receive_cleanup;
} else if(id_cache[i].ids[j] == 0) {
ESP_LOGI(TAG, "adding id to tracking");
// add id to array
id_cache[i].ids[i] = packet->id;
// set next in queue to zero, rolling over as needed
id_cache[i].ids[(i + 1) % MSG_ID_TRACK] = 0;
goto break_outer;
}
}
}
break_outer:
// update local msg id to incoming +1
// this will give a rolling local area id
if(packet->id < msg_id) {