Fixing SD card simuation issue on v3 4.36.0.252 firwmare.

README.md

@@ -10,6 +10,9 @@ functions:
 6. Automatically archive the recordings.
 
 # Release notes
+## 0.5.03:
+* Fixing broken SD card simuation on latest v3 firmware (4.36.0.252)
+
 ## 0.5.02:
 * Fixing an install issue with RTSP firmware.
 * Fixing an issue with NFS connectivity detection.

src/utils/libhacks.c

@@ -25,11 +25,19 @@
 #define HACKDATA_MAGIC  0xDEADBEEF
 #define MAX_PATH        255
 
+#define ARRAY_SIZE(x)   sizeof(x)/sizeof(x[0])
+
+const char* const mmc_gpio_paths[] = {
+    // 4.36.0.228 and older use GPIO50 to detect MMC insertion.
+    "/sys/class/gpio/gpio50/value",
+    // 4.36.0.252 and later uses GPIO62 to detect MMC insertion.
+    "/sys/class/gpio/gpio62/value"
+};
+
 typedef struct {
     uint32_t    magic;
     uint32_t    nfs_mounted;
-    char        mmc_gpio_path_orig[MAX_PATH];
-    char        mmc_gpio_path_redir[MAX_PATH];
+    char        mmc_gpio_redir[MAX_PATH];
 } hackdata_t;
 
 hackdata_t*     g_hackdata;
@@ -162,33 +170,28 @@ int open(char * file, int oflag) {
     typedef int (*PFN_open)(const char*, int);
     DLSYM(open);
 
-    if (strcmp(file, g_hackdata->mmc_gpio_path_orig) == 0) {
-        // TODO: Replace hardcoded wyzehack path
-        return s_pfn(g_hackdata->mmc_gpio_path_redir, oflag);
-    } else {
-        return s_pfn(file, oflag);
+    if (g_hackdata->mmc_gpio_redir[0]) {
+        for (int i = 0; i < ARRAY_SIZE(mmc_gpio_paths); i ++) {
+            if (strcmp(file, mmc_gpio_paths[i]) == 0) {
+                printf("Redirecting access to %s to %s\n",
+                       file, g_hackdata->mmc_gpio_redir);
+                return s_pfn(g_hackdata->mmc_gpio_redir, oflag);
+            }
+        }
     }
+    return s_pfn(file, oflag);
 }
 
 int hack_init() {
     if (g_hackdata->magic != HACKDATA_MAGIC) {
         return -1;
     }
 
-    snprintf(
-        g_hackdata->mmc_gpio_path_orig,
-        sizeof(g_hackdata->mmc_gpio_path_orig),
-        "/sys/class/gpio/gpio%s/value", getenv("MMC_GPIO"));
-
-    snprintf(
-        g_hackdata->mmc_gpio_path_redir,
-        sizeof(g_hackdata->mmc_gpio_path_redir),
-        "%s/mmc_gpio_value.txt", getenv("WYZEHACK_DIR"));
-
-    printf(
-        "Access to %s will be redirected to %s\n",
-        g_hackdata->mmc_gpio_path_orig, g_hackdata->mmc_gpio_path_redir);
-
+    const char* p = getenv("MMC_GPIO_REDIR");
+    if (p) {
+        strncpy(g_hackdata->mmc_gpio_redir, p,
+                sizeof(g_hackdata->mmc_gpio_redir));
+    }
     return 0;
 }
 

wyze_hack/hack_ver.inc

@@ -1 +1 @@
-export WYZEHACK_VER=0.5.02
+export WYZEHACK_VER=0.5.03

wyze_hack/main.sh

@@ -18,55 +18,49 @@ case $WYZEAPP_VER in
     export DEVICE_ID=$(grep -oE "NETRELATED_MAC=[A-F0-9]{12}" /params/config/.product_config | sed 's/NETRELATED_MAC=//g')
     export DEVICE_MODEL="V1"
     export SPEAKER_GPIO=63
-    export MMC_GPIO=50
     ;;
 
 4.9.*)
     # Cam V2
     export DEVICE_ID=$(grep -oE "NETRELATED_MAC=[A-F0-9]{12}" /params/config/.product_config | sed 's/NETRELATED_MAC=//g')
     export DEVICE_MODEL="V2"
     export SPEAKER_GPIO=63
-    export MMC_GPIO=50
     ;;
 
 4.28.*)
     # Cam V2 RTSP
     export DEVICE_ID=$(grep -oE "NETRELATED_MAC=[A-F0-9]{12}" /params/config/.product_config | sed 's/NETRELATED_MAC=//g')
     export DEVICE_MODEL="V2"
     export SPEAKER_GPIO=63
-    export MMC_GPIO=50
     ;;
 
 4.10.*)
     # Cam PAN
     export DEVICE_ID=$(grep -oE "NETRELATED_MAC=[A-F0-9]{12}" /params/config/.product_config | sed 's/NETRELATED_MAC=//g')
     export DEVICE_MODEL="PAN"
     export SPEAKER_GPIO=63
-    export MMC_GPIO=50
     ;;
 
 4.29.*)
     # Cam PAN RTSP
     export DEVICE_ID=$(grep -oE "NETRELATED_MAC=[A-F0-9]{12}" /params/config/.product_config | sed 's/NETRELATED_MAC=//g')
     export DEVICE_MODEL="PAN"
     export SPEAKER_GPIO=63
-    export MMC_GPIO=50
     ;;
 
 4.25.*)
     # Doorbell
     export DEVICE_ID=$(grep -E -o CONFIG_INFO=[0-9A-F]+ /params/config/.product_config | cut -c 13-24)
     export DEVICE_MODEL="DB"
     export SPEAKER_GPIO=63
-    export MMC_GPIO=50
     ;;
 
 4.36.*)
     # Cam V3
     export DEVICE_ID=$(grep -E -o CONFIG_INFO=[0-9A-F]+ /configs/.product_config | cut -c 13-24)
     export DEVICE_MODEL="V3"
     export SPEAKER_GPIO=63
-    export MMC_GPIO=50
+    export MMC_GPIO_REDIR="$WYZEHACK_DIR/mmc_gpio_value.txt"
     ;;
 
 *)
@@ -382,7 +376,9 @@ mount_nfs() {
     done
 
     echo "WyzeHack: Notifying iCamera about SD card insertion event..."
-    echo "0" > $WYZEHACK_DIR/mmc_gpio_value.txt
+    if [ ! -z $MMC_GPIO_REDIR ]; then
+        echo "0" > $MMC_GPIO_REDIR
+    fi
     $WYZEHACK_DIR/bin/hackutils mmc_insert
 
     # Mark this directory for this camera
@@ -525,7 +521,9 @@ cmd_run() {
         # MMC detection hook init
         export PATH=$WYZEHACK_DIR/bin:$PATH
         export LD_LIBRARY_PATH=$WYZEHACK_DIR/bin:$LD_LIBRARY_PATH
-        echo "1" > $WYZEHACK_DIR/mmc_gpio_value.txt
+        if [ ! -z $MMC_GPIO_REDIR ];then
+            echo "1" > $MMC_GPIO_REDIR
+        fi
         $WYZEHACK_DIR/bin/hackutils init
 
         export WYZEINIT_MD5=$(md5sum $WYZEINIT_SCRIPT| grep -oE "^[0-9a-f]*")