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55 lines
1.9 KiB
C
55 lines
1.9 KiB
C
#pragma once
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#ifdef DATA_LINK
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#include "freertos/FreeRTOS.h"
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#define RIP_MAX_HOPS 15 //16 or more is infinite
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#define RIP_MAX_ROUTES 10 //for the demo we will use up to 10 boards in total (9 other boards will be connected = 9 rows)
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#define RIP_INVALID_ROW 0
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#define RIP_VALID_ROW 1
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#define RIP_NEW_ROW 2
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#define RIP_BROADCAST_INTERVAL 15000 //broadcast every 30 seconds (15000ms)
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// #define RIP_BROADCAST_INTERVAL 3000 //temp broadcast every 3 seconds (3000ms)
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#define RIP_TTL_START 180 //seconds
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#define RIP_MS_TO_SEC 1000 //1000 ms to 1 sec
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#define RIP_MAX_SEM_WAIT_MS 30
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#define RIP_FLUSH_COUNT 8 //flush after 8*30 seconds = 240 seconds
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#define RIP_DISCOVERY_MESSAGE_SIZE 1
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#define RIP_WIRE_STRIDE 3 // bytes per entry on the wire: board_id, hops, sum_of_hops
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/**
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* @brief Routing data to a board
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* This struct will be sent to other boards
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*/
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typedef struct _rip_hops{
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uint8_t board_id; //ID of the destination
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uint8_t hops; //hop count to `board_id`
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uint8_t sum_of_hops; //sum of hops from `board_id` to all other known boards (centrality score)
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} RIPHop;
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typedef struct _rip_row{
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RIPHop info;
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uint8_t channel; //rmt channel
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uint8_t ttl; //how long this entry is valid for. starting value is 180 seconds
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uint8_t valid; //is this a valid entry?
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uint8_t ttl_flush; //if hops is invalid, this would count the amount of time until this entry would be invalid (max is in multiples of 30 seconds) but can vary
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StaticSemaphore_t mutex_buf; //where mutex state is stored
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SemaphoreHandle_t row_sem; //mutex sem handle of mutex_buf
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} RIPRow;
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/**
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* @brief Public facing RIP table row
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*
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*/
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typedef struct _rip_public_row{
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RIPHop info;
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uint8_t channel; //rmt channel
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} RIPRow_public;
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typedef struct _rip_public_matrix{
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RIPRow_public* table;
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size_t size;
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uint8_t board_id; //Board ID's routing table
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} RIPRow_public_matrix;
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#endif //DATA_LINK
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