fix implicit call to nanosleep and use github arm64 beta

Author: CameronBrooks11

.github/workflows/ci.yml

@@ -64,19 +64,14 @@ jobs:
 
   build-arm64:
     name: Build (ARM64)
-    runs-on: ubuntu-22.04
-    container:
-      image: ubuntu:22.04
-      # request ARM64 emulation — GitHub runners will use qemu for multiarch containers
-      options: --platform linux/arm64
-
+    runs-on: ubuntu-22.04-arm64    # native ARM64 runner beta support
     steps:
       - uses: actions/checkout@v4
 
       - name: Install dependencies
         run: |
-          apt-get update
-          apt-get install -y cmake ninja-build gcc g++ libc6-dev
+          sudo apt-get update
+          sudo apt-get install -y cmake ninja-build gcc g++ libc6-dev
 
       - name: Configure
         run: cmake -S . -B build -G Ninja -DBUILD_TESTING=ON

examples/c/i2c_scanner/main.c

@@ -6,6 +6,7 @@
 #include <stdio.h>
 #include <stdint.h>
 #include <sys/types.h>
+#include <unistd.h>
 #include "linux_wire.h"
 
 int main(void)

examples/c/i2c_scanner_strict/main.c

@@ -6,6 +6,7 @@
 #include <stdio.h>
 #include <stdint.h>
 #include <sys/types.h>
+#include <unistd.h>
 #include "linux_wire.h"
 
 int main(void)

examples/c/master_multiplier/main.c

@@ -3,9 +3,11 @@
  * Sends a byte to a device and reads the response (expected multiply result).
  */
 
+#define _POSIX_C_SOURCE 199309L
 #include <stdio.h>
 #include <stdint.h>
 #include <sys/types.h>
+#include <unistd.h>
 #include <time.h>
 #include "linux_wire.h"
 

examples/c/master_reader/main.c

@@ -6,6 +6,7 @@
 #include <stdio.h>
 #include <stdint.h>
 #include <sys/types.h>
+#include <unistd.h>
 #include "linux_wire.h"
 
 static const uint16_t DEVICE_ADDR = 0x40;

examples/c/master_writer/main.c

@@ -6,6 +6,7 @@
 #include <stdio.h>
 #include <stdint.h>
 #include <sys/types.h>
+#include <unistd.h>
 #include "linux_wire.h"
 
 static const uint16_t DEVICE_ADDR = 0x40;

examples/cpp/master_multiplier/main.cpp

@@ -1,5 +1,6 @@
 #include <cstdio>
-#include <time.h>
+#include <thread>
+#include <chrono>
 #include "Wire.h"
 
 /*
@@ -33,8 +34,7 @@ int main()
     }
 
     // Wait briefly to allow the Nano to process the value (~1ms)
-    struct timespec ts = { .tv_sec = 0, .tv_nsec = 1000 * 1000 };
-    nanosleep(&ts, NULL);
+    std::this_thread::sleep_for(std::chrono::milliseconds(1));
 
     // Request 1 byte back
     uint8_t count = Wire.requestFrom(DEVICE_ADDR, (uint8_t)1);