add mbedtls platform init call

src/main.c

@@ -18,6 +18,8 @@
 #include "tracing.h"
 #include "bloom.h"
 
+#include "mbedtls/platform.h"
+
 
 /**
  * Fill the bloom filter with all stored records.
@@ -43,6 +45,13 @@ void main(void) {
     int err = 0;
     printk("Starting Contact-Tracing Wristband...\n");
 
+     int ret = 0;
+
+    if((ret = mbedtls_platform_setup(NULL)) != 0) {
+        mbedtls_printf("Platform initialization failed with error %d\r\n", ret);
+        return 1;
+    }
+
     // Use custom randomization as the mbdet_tls context initialization messes with the Zeyhr BLE stack.
     err = en_init(sys_csrand_get);
     if (err) {