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provisioning example, waitForProvisioning()

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This commit is contained in:
Manuel Bleichenbacher
2018-07-23 14:30:03 +02:00
parent b179ce6884
commit 3e084a4ed9
6 changed files with 142 additions and 12 deletions
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3
examples/provisioning/Makefile Normal file
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@ -0,0 +1,3 @@
PROJECT_NAME := provisioning
include $(IDF_PATH)/make/project.mk

0
examples/provisioning/main/component.mk Normal file
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91
examples/provisioning/main/main.cpp Normal file
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@ -0,0 +1,91 @@
/*******************************************************************************
*
* ttn-esp32 - The Things Network device library for ESP-IDF / SX127x
*
* Copyright (c) 2018 Manuel Bleichenbacher
*
* Licensed under MIT License
* https://opensource.org/licenses/MIT
*
* Sample program showing how to provision the keys via the console.
*******************************************************************************/
#include "freertos/FreeRTOS.h"
#include "esp_event.h"
#include "nvs_flash.h"
#include "TheThingsNetwork.h"
// NOTE:
// The LoRaWAN frequency and the radio chip must be configured by running 'make menuconfig'.
// Go to Components / The Things Network, select the appropriate values and save.
// Pins and other resources
#define TTN_SPI_HOST HSPI_HOST
#define TTN_SPI_DMA_CHAN 1
#define TTN_PIN_SPI_SCLK 5
#define TTN_PIN_SPI_MOSI 27
#define TTN_PIN_SPI_MISO 19
#define TTN_PIN_NSS 18
#define TTN_PIN_RXTX TTN_NOT_CONNECTED
#define TTN_PIN_RST 14
#define TTN_PIN_DIO0 26
#define TTN_PIN_DIO1 33
static TheThingsNetwork ttn;
const unsigned TX_INTERVAL = 30;
static uint8_t msgData[] = "Hello, world";
void sendMessages(void* pvParameter)
{
while (1) {
printf("Sending message...\n");
TTNResponseCode res = ttn.transmitMessage(msgData, sizeof(msgData) - 1);
printf(res == kTTNSuccessfulTransmission ? "Message sent.\n" : "Transmission failed.\n");
vTaskDelay(TX_INTERVAL * 1000 / portTICK_PERIOD_MS);
}
}
extern "C" void app_main(void)
{
esp_err_t err;
// Initialize the GPIO ISR handler service
err = gpio_install_isr_service(ESP_INTR_FLAG_IRAM);
ESP_ERROR_CHECK(err);
// Initialize the NVS (non-volatile storage) for saving and restoring the keys
err = nvs_flash_init();
ESP_ERROR_CHECK(err);
// Initialize SPI bus
spi_bus_config_t spi_bus_config;
spi_bus_config.miso_io_num = TTN_PIN_SPI_MISO;
spi_bus_config.mosi_io_num = TTN_PIN_SPI_MOSI;
spi_bus_config.sclk_io_num = TTN_PIN_SPI_SCLK;
spi_bus_config.quadwp_io_num = -1;
spi_bus_config.quadhd_io_num = -1;
spi_bus_config.max_transfer_sz = 0;
err = spi_bus_initialize(TTN_SPI_HOST, &spi_bus_config, TTN_SPI_DMA_CHAN);
ESP_ERROR_CHECK(err);
// Configure the SX127x pins
ttn.configurePins(TTN_SPI_HOST, TTN_PIN_NSS, TTN_PIN_RXTX, TTN_PIN_RST, TTN_PIN_DIO0, TTN_PIN_DIO1);
ttn.startProvisioningTask();
ttn.waitForProvisioning();
printf("Joining...\n");
if (ttn.join())
{
printf("Joined.\n");
xTaskCreate(sendMessages, "send_messages", 1024 * 4, (void* )0, 3, NULL);
}
else
{
printf("Join failed. Goodbye\n");
}
}

10
include/TheThingsNetwork.h
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@ -111,6 +111,16 @@ public:
*/
void startProvisioningTask();
/**
* @brief Wait until the device EUI, app EUI and app key have been provisioned
* via the provisioning task.
*
* If device is already provisioned (stored data in NVS, call to 'provision()'
* or call to 'join(const char*, const char*, const char*)', this function
* immediately returns.
*/
void waitForProvisioning();
/**
* @brief Activate the device via OTAA.
*

15
src/TheThingsNetwork.cpp
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@ -87,6 +87,21 @@ void TheThingsNetwork::startProvisioningTask()
#endif
}
void TheThingsNetwork::waitForProvisioning()
{
#if !defined(CONFIG_TTN_PROVISION_UART_NONE)
if (isProvisioned())
{
ESP_LOGI(TAG, "Device is already provisioned");
return;
}
while (!provisioning_have_keys())
vTaskDelay(1000 / portTICK_PERIOD_MS);
ESP_LOGI(TAG, "Device successfully provisioned");
#endif
}
bool TheThingsNetwork::join(const char *devEui, const char *appEui, const char *appKey)
{

35
src/provisioning.c
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@ -245,32 +245,38 @@ bool provisioning_have_keys()
bool provisioning_decode_keys(const char *dev_eui, const char *app_eui, const char *app_key)
{
have_keys = false;
uint8_t buf_dev_eui[8];
uint8_t buf_app_eui[8];
uint8_t buf_app_key[16];
if (strlen(dev_eui) != 16 || !hex_str_to_bin(dev_eui, global_dev_eui, 8))
if (strlen(dev_eui) != 16 || !hex_str_to_bin(dev_eui, buf_dev_eui, 8))
{
ESP_LOGW(TAG, "Invalid device EUI: %s", dev_eui);
return false;
}
swap_bytes(global_dev_eui, 8);
swap_bytes(buf_dev_eui, 8);
if (strlen(app_eui) != 16 || !hex_str_to_bin(app_eui, global_app_eui, 8))
if (strlen(app_eui) != 16 || !hex_str_to_bin(app_eui, buf_app_eui, 8))
{
ESP_LOGW(TAG, "Invalid application EUI: %s", app_eui);
return false;
}
swap_bytes(global_app_eui, 8);
swap_bytes(buf_app_eui, 8);
if (strlen(app_key) != 32 || !hex_str_to_bin(app_key, global_app_key, 16))
if (strlen(app_key) != 32 || !hex_str_to_bin(app_key, buf_app_key, 16))
{
ESP_LOGW(TAG, "Invalid application key: %s", app_key);
return false;
}
have_keys = true;
return true;
memcpy(global_dev_eui, buf_dev_eui, sizeof(global_dev_eui));
memcpy(global_app_eui, buf_app_eui, sizeof(global_app_eui));
memcpy(global_app_key, buf_app_key, sizeof(global_app_key));
have_keys = provisioning_save_keys();
return have_keys;
}
@ -313,7 +319,9 @@ done:
bool provisioning_restore_keys(bool silent)
{
have_keys = false;
uint8_t buf_dev_eui[8];
uint8_t buf_app_eui[8];
uint8_t buf_app_key[16];
nvs_handle handle = 0;
esp_err_t res = nvs_open(NVS_FLASH_PARTITION, NVS_READONLY, &handle);
@ -328,15 +336,18 @@ bool provisioning_restore_keys(bool silent)
if (res != ESP_OK)
goto done;
if (!read_nvs_value(handle, NVS_FLASH_KEY_DEV_EUI, global_dev_eui, sizeof(global_dev_eui), silent))
if (!read_nvs_value(handle, NVS_FLASH_KEY_DEV_EUI, buf_dev_eui, sizeof(global_dev_eui), silent))
goto done;
if (!read_nvs_value(handle, NVS_FLASH_KEY_APP_EUI, global_app_eui, sizeof(global_app_eui), silent))
if (!read_nvs_value(handle, NVS_FLASH_KEY_APP_EUI, buf_app_eui, sizeof(global_app_eui), silent))
goto done;
if (!read_nvs_value(handle, NVS_FLASH_KEY_APP_KEY, global_app_key, sizeof(global_app_key), silent))
if (!read_nvs_value(handle, NVS_FLASH_KEY_APP_KEY, buf_app_key, sizeof(global_app_key), silent))
goto done;
memcpy(global_dev_eui, buf_dev_eui, sizeof(global_dev_eui));
memcpy(global_app_eui, buf_app_eui, sizeof(global_app_eui));
memcpy(global_app_key, buf_app_key, sizeof(global_app_key));
have_keys = true;
ESP_LOGI(TAG, "Dev and app EUI and app key have been restored from NVS storage");