Capture and Send SIGFOX Messages

danisam · August 18, 2022, 3:09pm

I want to help on give to Flipper the possibility to talk SIGFOX on RCZ2 902MHZ .
PLease tell me what do you need for this to become a reality.

Thanks

danisam · August 22, 2022, 1:51pm

Is posible that i add this protocol by myself ? where can i find documentation ?

kakawlala · August 22, 2022, 2:17pm

Only articles below 450MHz seem to be discussed here. For articles above 900MHz, almost no one responded.

SkorP · August 22, 2022, 2:19pm

sure you can. your protocol is not LORA by any chance? if yes then you have nothing

danisam · August 22, 2022, 2:56pm

Is not Lora is SIGFOX , the technical info is here.

SkorP · August 22, 2022, 5:48pm

there is no technical side of the issue in this description. modulation parameters of the data packet, preabule, word of synchronization and other things. but if you know all this then ok. I see that this packet data is the closest thing to this topic is the CLI “subghz chat”

SkorP · August 22, 2022, 5:53pm

watch

github.com

flipperdevices/flipperzero-firmware/blob/8992f8ac3633702947177021cd845f8947ef91c2/applications/subghz/subghz_cli.c#L524

    
      
                      printf("Failed to save Keystore");
                      break;
                  }
          
          
    } while(false);
          
          
    string_clear(destination);
              string_clear(source);
          }
          
          
static void subghz_cli_command_chat(Cli* cli, string_t args) {
              uint32_t frequency = 433920000;
          
          
    if(string_size(args)) {
                  int ret = sscanf(string_get_cstr(args), "%lu", &frequency);
                  if(ret != 1) {
                      printf("sscanf returned %d, frequency: %lu\r\n", ret, frequency);
                      cli_print_usage("subghz chat", "<Frequency: in Hz>", string_get_cstr(args));
                      return;
                  }
                  if(!furi_hal_subghz_is_frequency_valid(frequency)) {

github.com

flipperdevices/flipperzero-firmware/blob/dev/applications/subghz/helpers/subghz_chat.c

#include "subghz_chat.h"
#include <lib/subghz/subghz_tx_rx_worker.h>

#define TAG "SubGhzChat"
#define SUBGHZ_CHAT_WORKER_TIMEOUT_BETWEEN_MESSAGES 500

struct SubGhzChatWorker {
    FuriThread* thread;
    SubGhzTxRxWorker* subghz_txrx;

    volatile bool worker_running;
    volatile bool worker_stoping;
    FuriMessageQueue* event_queue;
    uint32_t last_time_rx_data;

    Cli* cli;
};

/** Worker thread
 *

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github.com

flipperdevices/flipperzero-firmware/blob/dev/lib/subghz/subghz_tx_rx_worker.c

#include "subghz_tx_rx_worker.h"

#include <stream_buffer.h>
#include <furi.h>

#define TAG "SubGhzTxRxWorker"

#define SUBGHZ_TXRX_WORKER_BUF_SIZE 2048
//you can not set more than 62 because it will not fit into the FIFO CC1101
#define SUBGHZ_TXRX_WORKER_MAX_TXRX_SIZE 60

#define SUBGHZ_TXRX_WORKER_TIMEOUT_READ_WRITE_BUF 40

struct SubGhzTxRxWorker {
    FuriThread* thread;
    StreamBufferHandle_t stream_tx;
    StreamBufferHandle_t stream_rx;

    volatile bool worker_running;
    volatile bool worker_stoping;

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