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Jamming #1

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Jamming #1

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7be484e
add radio jamming command
schrein Mar 16, 2021
58fbb9d
rename jamming command function
schrein Mar 16, 2021
b774b56
use different frame header for jam, ignored by other receiver
schrein Jun 7, 2021
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79 changes: 75 additions & 4 deletions iotlabradio/riot/radio-characterization/main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -86,6 +86,8 @@ typedef struct {

recv_logger_t recv_logger;

int16_t jamming = 0;

static void recv_logger_init(recv_logger_t* self)
{
self->node_id = NODE_ID_NONE;
Expand Down Expand Up @@ -137,7 +139,7 @@ static void send_logger_show(int nb_pkt, int nb_error, char* node_id,
printf("]}\n");
}

int send_one_packet(int num)
int send_one_packet(int num, int magic_header)
{
uint8_t addr[GNRC_NETIF_L2ADDR_MAXLEN];
gnrc_pktsnip_t *pkt, *hdr;
Expand All @@ -150,7 +152,7 @@ int send_one_packet(int num)
// Fills out a packet with packet size and num value
memset(data, num, conf.pkt_size);
// Add magic number (eg. ADCE)
uint16_t magic = MAGIC;
uint16_t magic = magic_header;
memcpy(data, &magic, sizeof(magic));
data += sizeof(uint16_t);
// Add zero out the space for CRC
Expand Down Expand Up @@ -226,7 +228,7 @@ static void send_packets(void)
int failure_count = 0;
int i;
for (i = 0; i < conf.nb_pkt; i++) {
if (send_one_packet(i))
if (send_one_packet(i, MAGIC))
failure_count++;
xtimer_usleep(1000 * conf.delay);
}
Expand All @@ -236,6 +238,23 @@ static void send_packets(void)
conf.power, conf.channel);
}

void* jamming_thread(void *arg)
{
(void) arg;
/* Enter TX mode */
conf.radio_mode = MODE_TX;
/* Send nb_pkt packets and count errors */
int i=0;
while(jamming==1){
send_one_packet(i%100, 0xFFFFu);
i++;
xtimer_usleep(1000 * conf.delay);
}
/* restart RX */
conf.radio_mode = MODE_RX;
return NULL;
}

char node_id[32];

static void recv_logger_add(recv_logger_t* self,
Expand Down Expand Up @@ -360,6 +379,57 @@ int send_pkt_cmd(int argc, char **argv)
return 1;
}


char jamming_thread_stack[512+256];

int jamming_cmd(int argc, char **argv)
{
if (argc != 5) {
printf("Usage: %s <state:start|stop> <str:node_id> <int:pkt_size> <int:delay_ms>\n", argv[0]);
return 1;
}
char* state = argv[1];
if (!(strcmp(state, "start") == 0 || strcmp(state, "stop") == 0 )) {
printf("Invalid state arg %s: <start|stop>\n", state);
return 1;
}

conf.node_id = argv[2];
int ret = sscanf(argv[3], "%"SCNu16, &conf.pkt_size) +
sscanf(argv[4], "%"SCNu16, &conf.delay);

if ((ret == 2) && (strcmp(conf.node_id, NODE_ID_NONE) != 0)) {
if (conf.pkt_size < PKT_MIN_SEND_SIZE ||
conf.pkt_size > PKT_MAX_SEND_SIZE) {
printf("Invalid packet size (%i<size<%i)\n",
PKT_MIN_SEND_SIZE,
PKT_MAX_SEND_SIZE);
return 1;
}
if (conf.delay < 1 || conf.delay > PKT_MAX_SEND_DELAY) {
printf("Invalid delay (1<=delay<%i)\n",
PKT_MAX_SEND_DELAY);
return 1;
}
if (strcmp(state, "start") == 0) {
if(jamming == 1) {
printf("Error, already jamming. Stop before\n");
return 1;
} else {
jamming = 1;
thread_create(jamming_thread_stack, sizeof(jamming_thread_stack),
THREAD_PRIORITY_MAIN + 1, THREAD_CREATE_STACKTEST,
jamming_thread, NULL, "jamming_thread");
return 0;
}
} else {
jamming = 0;
return 0;
}
}
return 1;
}

int show_cmd(int argc, char **argv)
{
if (argc >1) {
Expand Down Expand Up @@ -422,6 +492,7 @@ int set_power_cmd(int argc, char **argv)

static const shell_command_t shell_commands[] = {
{ "send", "send packets", send_pkt_cmd},
{ "jam", "radio jamming", jamming_cmd},
{ "show", "show recv", show_cmd},
{ "clear", "clear recv", clear_cmd},
{ "channel", "change channel", set_channel_cmd},
Expand Down Expand Up @@ -503,7 +574,7 @@ int main(void)
recv_logger_init(&recv_logger);

thread_create(recv_thread_stack, sizeof(recv_thread_stack),
THREAD_PRIORITY_MAIN + 1, THREAD_CREATE_STACKTEST,
THREAD_PRIORITY_MAIN + 2, THREAD_CREATE_STACKTEST,
recv_thread, NULL, "recv_thread");

char line_buf[SHELL_DEFAULT_BUFSIZE];
Expand Down