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feat: BLE provisioning for WiFi and MQTT credentials #10

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Merged
JMTamayo merged 4 commits into from
Jun 20, 2026
Merged

feat: BLE provisioning for WiFi and MQTT credentials #10

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d2edbdb
refactor(digital_actuator): remove unused virtual from service
JMTamayo Jun 20, 2026
d8a8623
build: enable NimBLE BLE peripheral stack
JMTamayo Jun 20, 2026
4aeba0d
feat(connectivity): add config stores and BLE provisioning
JMTamayo Jun 20, 2026
7e3a098
refactor(app): rename bootstrap to build and wire provisioning
JMTamayo Jun 20, 2026
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59 changes: 57 additions & 2 deletions firmware/include/config.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2,15 +2,70 @@

#include <driver/gpio.h>

#include <array>
#include <cstdint>

namespace config {

namespace nvs {

constexpr const char *NAMESPACE = "config";

} // namespace nvs

namespace device {

constexpr const char *NVS_NAMESPACE = "config";
constexpr const char *DEVICE_ID_KEY = "device_id";
constexpr const char *PROJECT_NAME = "bugbite";
constexpr const char *ID_KEY = "device_id";

} // namespace device

namespace wifi {

constexpr const char *SSID_KEY = "wifi_ssid";
constexpr const char *PASSWORD_KEY = "wifi_password";

} // namespace wifi

namespace mqtt {

constexpr const char *HOST_KEY = "mqtt_host";
constexpr const char *PORT_KEY = "mqtt_port";
constexpr const char *USER_KEY = "mqtt_user";
constexpr const char *PASSWORD_KEY = "mqtt_password";

} // namespace mqtt

namespace ble {

// 128-bit provisioning UUIDs (little-endian for NimBLE).
constexpr std::array<std::uint8_t, 16> SERVICE_UUID = {
0x3d, 0x4e, 0x5f, 0x6a, 0x7b, 0x8c, 0xb9, 0xae,
0xbf, 0xc0, 0xd1, 0xe2, 0x00, 0x01, 0x00, 0x00};
constexpr std::array<std::uint8_t, 16> DEVICE_ID_UUID = {
0x3d, 0x4e, 0x5f, 0x6a, 0x7b, 0x8c, 0xb9, 0xae,
0xbf, 0xc0, 0xd1, 0xe2, 0x00, 0x08, 0x00, 0x00};
constexpr std::array<std::uint8_t, 16> WIFI_SSID_UUID = {
0x3d, 0x4e, 0x5f, 0x6a, 0x7b, 0x8c, 0xb9, 0xae,
0xbf, 0xc0, 0xd1, 0xe2, 0x00, 0x02, 0x00, 0x00};
constexpr std::array<std::uint8_t, 16> WIFI_PASSWORD_UUID = {
0x3d, 0x4e, 0x5f, 0x6a, 0x7b, 0x8c, 0xb9, 0xae,
0xbf, 0xc0, 0xd1, 0xe2, 0x00, 0x03, 0x00, 0x00};
constexpr std::array<std::uint8_t, 16> MQTT_HOST_UUID = {
0x3d, 0x4e, 0x5f, 0x6a, 0x7b, 0x8c, 0xb9, 0xae,
0xbf, 0xc0, 0xd1, 0xe2, 0x00, 0x04, 0x00, 0x00};
constexpr std::array<std::uint8_t, 16> MQTT_PORT_UUID = {
0x3d, 0x4e, 0x5f, 0x6a, 0x7b, 0x8c, 0xb9, 0xae,
0xbf, 0xc0, 0xd1, 0xe2, 0x00, 0x05, 0x00, 0x00};
constexpr std::array<std::uint8_t, 16> MQTT_USER_UUID = {
0x3d, 0x4e, 0x5f, 0x6a, 0x7b, 0x8c, 0xb9, 0xae,
0xbf, 0xc0, 0xd1, 0xe2, 0x00, 0x06, 0x00, 0x00};
constexpr std::array<std::uint8_t, 16> MQTT_PASSWORD_UUID = {
0x3d, 0x4e, 0x5f, 0x6a, 0x7b, 0x8c, 0xb9, 0xae,
0xbf, 0xc0, 0xd1, 0xe2, 0x00, 0x07, 0x00, 0x00};

} // namespace ble

namespace relay {

constexpr gpio_num_t GPIO = GPIO_NUM_2;
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10 changes: 10 additions & 0 deletions firmware/sdkconfig.defaults
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Original file line number Diff line number Diff line change
Expand Up @@ -16,3 +16,13 @@ CONFIG_FREERTOS_HZ=1000

# --- Logging -----------------------------------------------------------------
CONFIG_LOG_DEFAULT_LEVEL_DEBUG=y

# --- Bluetooth Low Energy (NimBLE host, peripheral only) ---------------------
# Used by the connectivity/provisioning module. ESP32-C3 is BLE-only; NimBLE is
# the lighter host. No security/bonding (plaintext link) for this MVP.
CONFIG_BT_ENABLED=y
CONFIG_BT_NIMBLE_ENABLED=y
CONFIG_BT_NIMBLE_ROLE_PERIPHERAL=y
CONFIG_BT_NIMBLE_ROLE_BROADCASTER=y
CONFIG_BT_NIMBLE_ROLE_CENTRAL=n
CONFIG_BT_NIMBLE_ROLE_OBSERVER=n
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