Initial import of Microtracking project

platformio_microtracking/include/cloud_config.h

@@ -0,0 +1,75 @@
+#pragma once
+
+#include <cstdint>
+#include <type_traits>
+
+#ifndef PCB_ID
+#error "Define PCB_ID in platformio.ini, for example -DPCB_ID=0x01"
+#endif
+
+static_assert(std::is_integral<decltype(PCB_ID)>::value, "PCB_ID must be an integer");
+static_assert(PCB_ID > 0 && PCB_ID <= 0xffffffffffffULL, "PCB_ID must be between 0x01 and 0xffffffffffff");
+
+constexpr char cloudIdHexDigit(unsigned shift) {
+    return "0123456789abcdef"[(static_cast<std::uint64_t>(PCB_ID) >> shift) & 0x0f];
+}
+
+// Fixed 12-digit representation accepted by the existing hub registry.
+constexpr char CLOUD_DEVICE_ID[] = {
+    'e', 's', 'p', '3', '2', '-',
+    cloudIdHexDigit(44), cloudIdHexDigit(40), cloudIdHexDigit(36),
+    cloudIdHexDigit(32), cloudIdHexDigit(28), cloudIdHexDigit(24),
+    cloudIdHexDigit(20), cloudIdHexDigit(16), cloudIdHexDigit(12),
+    cloudIdHexDigit(8), cloudIdHexDigit(4), cloudIdHexDigit(0), '\0'
+};
+
+#if !defined(CLOUD_DEVICE_TOKEN) && __has_include("cloud_credentials.h")
+#include "cloud_credentials.h"
+#endif
+
+#ifndef CLOUD_DEVICE_TOKEN
+#error "Define CLOUD_DEVICE_TOKEN in include/cloud_credentials.h; see cloud_credentials.example.h"
+#else
+constexpr bool cloudTokenIsHex(const char* token, unsigned index = 0) {
+    return index == 64 ? token[index] == '\0' :
+        (((token[index] >= '0' && token[index] <= '9') ||
+          (token[index] >= 'a' && token[index] <= 'f')) && cloudTokenIsHex(token, index + 1));
+}
+static_assert(sizeof(CLOUD_DEVICE_TOKEN) == 65 && cloudTokenIsHex(CLOUD_DEVICE_TOKEN),
+              "CLOUD_DEVICE_TOKEN must be the 64 lowercase hex characters issued for this PCB_ID");
+#endif
+
+// ISRG Root X1: https://letsencrypt.org/certs/isrgrootx1.pem (expires 2035).
+// Both WSS and OTA verify the hostname/certificate; a valid NTP clock is needed.
+constexpr char CLOUD_ROOT_CA_PEM[] = R"PEM(-----BEGIN CERTIFICATE-----
+MIIFazCCA1OgAwIBAgIRAIIQz7DSQONZRGPgu2OCiwAwDQYJKoZIhvcNAQELBQAw
+TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh
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+oyi3B43njTOQ5yOf+1CceWxG1bQVs5ZufpsMljq4Ui0/1lvh+wjChP4kqKOJ2qxq
+4RgqsahDYVvTH9w7jXbyLeiNdd8XM2w9U/t7y0Ff/9yi0GE44Za4rF2LN9d11TPA
+mRGunUHBcnWEvgJBQl9nJEiU0Zsnvgc/ubhPgXRR4Xq37Z0j4r7g1SgEEzwxA57d
+emyPxgcYxn/eR44/KJ4EBs+lVDR3veyJm+kXQ99b21/+jh5Xos1AnX5iItreGCc=
+-----END CERTIFICATE-----
+)PEM";