Popravljen sprejemnik za linux (monitor mode)

linux-receiver/main.c

@@ -20,7 +20,7 @@ $ sudo ifconfig wlp5s0 down
 $ sudo iwconfig wlp5s0 mode monitor
 $ sudo ifconfig wlp5s0 up
 
-3/Run this code as root
+3/Run this code as root or regular user!
 */
 #include <stdint.h>
 #include <stdio.h>
@@ -45,18 +45,34 @@ $ sudo ifconfig wlp5s0 up
 #include "lo/lo_lowlevel.h"
 #include "lo/lo_osc_types.h"
 
-#define PACKET_LENGTH 400 //Approximate
+// OSC destination; localhost supercollider running @ default port (57121)
+// @TODO get this from argv?
+lo_address osc_dest;
+
+ //Approximate
+#define PACKET_LENGTH 400
 #define MAX_PACKET_LEN 1000
 
-// ESPNOW data payload starts at byte 60
-#define ESP_DATA_OFFSET 57
-
-// Sensor message
-#include "../src/sensor_msg.h"
-
 // Maksimalno stevilo
 #define ST_SPREJEMNIKOV 10
 
+// Receiver MAC start at byte 52
+#define WLAN_DA_OFFSET 52
+/*our MAC address*/
+uint8_t sprejemnikMac[] = { 0x9c, 0xb6, 0xd0, 0xc4, 0xe8, 0xb9 };
+uint8_t wlan_da[] = { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 };
+
+// ESPNOW packet identifier
+#define ESP_ID_OFFSET 82
+uint8_t esp_id[] = { 0x18, 0xfe, 0x34, 0x04 };
+uint8_t pkg_header[] = { 0x0, 0x0, 0x0, 0x0 };
+
+// ESPNOW data payload starts at byte 87
+#define ESP_DATA_OFFSET 87
+
+// Sensor message
+#include "../src/sensor_msg.h"
+
 uint8_t odcitekId;
 sensor_msg  odcitki[ST_SPREJEMNIKOV];
 bool poslji[ST_SPREJEMNIKOV];
@@ -66,9 +82,6 @@ struct timeval cas;
 struct timeval zdaj;
 int eps = 0;
 
-/*our MAC address*/
-//{0xF8, 0x1A, 0x67, 0xB7, 0xeB, 0x0B};
-
 /*ESP8266 host MAC address*/
 //{0x84,0xF3,0xEB,0x73,0x55,0x0D};
 
@@ -102,17 +115,52 @@ static struct sock_filter bpfcode[FILTER_LENGTH] = {
 };
 
 void print_packet(uint8_t *data, int len) {
-  /*
-  char macNaslov[18];
-  snprintf(macNaslov, sizeof(macNaslov), "%02x:%02x:%02x:%02x:%02x:%02x",
-           mac_addr[0], mac_addr[1], mac_addr[2], mac_addr[3], mac_addr[4], mac_addr[5]);
+  // Beri samo primerne pakete!
+  memcpy(&wlan_da, data + WLAN_DA_OFFSET, 6);
+#ifdef DEBUG
+  printf("Dest MAC: %02x:%02x:%02x:%02x:%02x:%02x\n", wlan_da[0],wlan_da[1],wlan_da[2],wlan_da[3],wlan_da[4],wlan_da[5]);
+#endif
+
+  /* DEBUG - print whole raw packet */
+#ifdef DEBUG
+  for (int i = 0; i < len; i++) {
+    printf("0x%02x ", data[i]);
+  }
+  printf("\n");
+#endif
+
+  // Ignoriraj pakete, ki so namenjeni drugam
+  for (int i = 0; i < 6; i++) {
+    if (wlan_da[i] != sprejemnikMac[i]) {
+      return;
+    }
+  }
+
+  // Ignoriraj pakete, ki niso ESP paketi!
+  memcpy(&pkg_header, data + ESP_ID_OFFSET, 4);
+  for (int i = 0; i < 4; i++) {
+    if (pkg_header[i] != esp_id[i]) {
+      return;
+    } 
+  }
+
+  // Stetje paketov na sekundo
+  eps += 1;
+  gettimeofday(&zdaj, NULL);
+
+  if (zdaj.tv_sec != cas.tv_sec) {
+    printf("Paketov na sekundo: %i\n", eps);
+    eps = 0;
+    gettimeofday(&cas, NULL); 
+  }
 
-  printf("%s\n", macNaslov);
-           */
-  //printf("Prejel podatke dolzine %i \n", len);
 
   // ID senzorja
-  odcitekId = (uint8_t) data[ESP_DATA_OFFSET];
+  memcpy(&odcitekId, data + ESP_DATA_OFFSET, 1);
+
+#ifdef DEBUG
+  printf("Odcitek ID: %i\n", odcitekId); 
+#endif
 
   // Vrednosti
   memcpy(&odcitki[odcitekId], data + ESP_DATA_OFFSET, sizeof(sensor_msg));
@@ -131,18 +179,6 @@ void print_packet(uint8_t *data, int len) {
 #endif
 
 
-  
-
-  eps += 1;
-  gettimeofday(&zdaj, NULL);
-
-  if (zdaj.tv_sec != cas.tv_sec) {
-    printf("Paketov na sekundo: %i\n", eps);
-    eps = 0;
-    gettimeofday(&cas, NULL); 
-  }
-  return;
-
   // @TODO locen thread za posiljanje?
   char glava[32];
   lo_bundle svezenj;
@@ -176,6 +212,7 @@ void print_packet(uint8_t *data, int len) {
 
       sporocilo = lo_bundle_serialise(svezenj, NULL, &dolzina);
       lo_bundle_pp(svezenj);
+      lo_send_bundle(osc_dest, svezenj);
       printf("%s\n", sporocilo);
       lo_bundle_free(svezenj);
 
@@ -183,12 +220,6 @@ void print_packet(uint8_t *data, int len) {
       //free(sporocilo);
     }
   }
-  /* DEBUG - print whole raw packet
-  for (int i = 0; i < len; i++) {
-    printf("0x%02x ", data[i]);
-  }
-  printf("\n");
- */
 }
 
 int create_raw_socket(char *dev, struct sock_fprog *bpf)
@@ -221,33 +252,33 @@ int create_raw_socket(char *dev, struct sock_fprog *bpf)
     return fd;
 }
 
-int main(int argc, char **argv)
-{
-    assert(argc == 2);
+int main(int argc, char **argv) {
+  assert(argc == 2);
 
-    uint8_t buff[MAX_PACKET_LEN] = {0};
-    int sock_fd;
-    char *dev = argv[1];
-    struct sock_fprog bpf = {FILTER_LENGTH, bpfcode};
+  uint8_t buff[MAX_PACKET_LEN] = {0};
+  int sock_fd;
+  char *dev = argv[1];
+  struct sock_fprog bpf = {FILTER_LENGTH, bpfcode};
 
-    sock_fd = create_raw_socket(dev, &bpf); /* Creating the raw socket */
+  sock_fd = create_raw_socket(dev, &bpf); /* Creating the raw socket */
 
-    printf("\n Waiting to receive packets ........ \n");
+  // @TODO get this from args?
+  osc_dest = lo_address_new("localhost", "57121");
 
-    gettimeofday(&cas, NULL);
+  printf("\n Waiting to receive packets ........ \n");
+  gettimeofday(&cas, NULL);
 
-    while (1)
-    {
-        int len = recvfrom(sock_fd, buff, MAX_PACKET_LEN, MSG_TRUNC, NULL, 0);
+  while (1) {
+    int len = recvfrom(sock_fd, buff, MAX_PACKET_LEN, MSG_TRUNC, NULL, 0);
 
-        if (len < 0) {
-            perror("Socket receive failed or error");
-            break;
-        } else {
-            //printf("len:%d\n", len);
-            print_packet(buff, len);
-        }
+    if (len < 0) {
+      perror("Socket receive failed or error");
+      break;
+    } else {
+      //printf("len:%d\n", len);
+      print_packet(buff, len);
     }
-    close(sock_fd);
-    return 0;
+  }
+  close(sock_fd);
+  return 0;
 }

linux-receiver/monitor_off.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+rmmod ath10k_pci
+rmmod ath10k_core
+
+modprobe ath10k_core
+modprobe ath10k_pci
+
+systemctl start NetworkManager

linux-receiver/monitor_on.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+dev=${1:-wlp3s0}
+chan=${2:-1}
+
+rmmod ath10k_pci
+rmmod ath10k_core
+
+systemctl stop NetworkManager
+
+sleep 1
+
+modprobe ath10k_core awmode=1 cryptmode=1
+sleep 1
+modprobe ath10k_pci
+sleep 1
+
+ifconfig $dev down
+iwconfig $dev mode monitor
+ifconfig $dev up
+iwconfig $dev channel $chan

linux-receiver/pozeni.sh

@@ -1,3 +1,5 @@
 #!/bin/bash
 
-sudo ./bin/receiver wlxd0aeec558360
+dev=${1:-wlp3s0}
+
+sudo ./bin/receiver $dev

linux-receiver/prep.sh

@@ -1,10 +0,0 @@
-#!/bin/bash
-
-dev="wlxd0aeec558360"
-chan="1"
-# sudo bash prep.sh *iface* *channel*
-# sudo bash prep.sh wlp1s0 8
-ifconfig $dev down
-iwconfig $dev mode monitor
-ifconfig $dev up
-iwconfig $dev channel $chan