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Reworked CSMA algorithm

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Mark Qvist 2025-01-07 20:15:26 +01:00
parent 08651f92f7
commit 5ec063c939
3 changed files with 144 additions and 57 deletions
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36
Config.h
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@ -67,31 +67,41 @@
const int rssi_offset = 157;
// Default LoRa settings
const int lora_rx_turnaround_ms = 66;
const int lora_post_tx_yield_slots = 6;
uint32_t post_tx_yield_timeout = 0;
#define PHY_HEADER_LORA_SYMBOLS 20
#define PHY_CRC_LORA_BITS 16
#define LORA_PREAMBLE_SYMBOLS_MIN 18
#define LORA_PREAMBLE_TARGET_MS 15
#define LORA_CAD_SYMBOLS 3
#define CSMA_SLOT_SYMBOLS 12
long lora_preamble_symbols = 12;
long lora_preamble_time_ms = 0;
long lora_header_time_ms = 0;
float lora_symbol_time_ms = 0.0;
float lora_symbol_rate = 0.0;
float lora_us_per_byte = 0.0;
bool lora_low_datarate = false;
// CSMA Parameters
#define CSMA_POST_TX_YIELD_SLOTS 3
#define CSMA_SLOT_MAX_MS 100
#define CSMA_SLOT_MIN_MS 24
long lora_preamble_symbols = 12;
long lora_preamble_time_ms = 0;
long lora_header_time_ms = 0;
float lora_symbol_time_ms = 0.0;
float lora_symbol_rate = 0.0;
float lora_us_per_byte = 0.0;
bool lora_low_datarate = false;
#define CSMA_SLOT_SYMBOLS 12
#define CSMA_CW_MIN 0
#define CSMA_CW_MAX 15
#define CSMA_SIFS_MS 0
int csma_slot_ms = CSMA_SLOT_MIN_MS;
long difs_ms = CSMA_SIFS_MS + 2*csma_slot_ms; // Distributed interframe space
long difs_wait_start = -1;
long cw_wait_start = -1;
long cw_wait_target = -1;
long cw_wait_passed = 0;
int csma_cw = -1;
int csma_slot_ms = 50;
////////////////////////////////////////
float csma_p_min = 0.15;
float csma_p_max = 0.333;
float csma_b_speed = 0.15;
uint8_t csma_p = 85;
////////////////////////////////////////
int lora_sf = 0;
int lora_cr = 5;