Simple Mbed Cloud Client application using features of K64 & K66
Connect to Mbed Cloud!
This example was customized a bit for FRDM-K66 and FRDM-K64F.
It depends on having an SD Card plugged in for storage of credentials. It could be changed later to use a SPI flash or other storage on a shield or wired in.
The app keeps track of how many times switch 2 (SW2) is pressed. The value can be retrieved via a GET request to Mbed Cloud.
Also, it will blink a pattern based on milisecond (ms) timing values that can be sent from Mbed Cloud. The pattern can be sent with a PUT request and the blinking sequence can be triggered by a POST request.
setup.cpp
- Committer:
- MarceloSalazar
- Date:
- 2018-02-13
- Revision:
- 0:e13a8a944e25
File content as of revision 0:e13a8a944e25:
// ----------------------------------------------------------------------------
// Copyright 2016-2017 ARM Ltd.
//
// SPDX-License-Identifier: Apache-2.0
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ----------------------------------------------------------------------------
///////////
// INCLUDES
///////////
// Note: this macro is needed on armcc to get the the PRI*32 macros
// from inttypes.h in a C++ code.
#ifndef __STDC_FORMAT_MACROS
#define __STDC_FORMAT_MACROS
#endif
#include "mbed.h"
#include "setup.h"
#include "memory_tests.h"
#include "EthernetInterface.h" // Networking interface include
#include "simple-mbed-cloud-client.h"
#include "pal.h"
#include "mbed-trace/mbed_trace.h"
#include "mbed-trace-helper.h"
#include "factory_configurator_client.h"
#include "SDBlockDevice.h"
#include "FATFileSystem.h"
// Network interface
#include "EthernetInterface.h"
EthernetInterface eth;
////////////////////////////////////////
// PLATFORM SPECIFIC DEFINES & FUNCTIONS
////////////////////////////////////////
#define DEFAULT_FIRMWARE_PATH "/sd/firmware"
#include "mbed_trace.h"
#define TRACE_GROUP "exam"
// Define led on/off
#ifdef TARGET_STM
#define LED_ON (true)
#else // #ifdef TARGET_STM
#define LED_ON (false)
#endif // #ifdef TARGET_STM
#define LED_OFF (!LED_ON)
DigitalOut led(MBED_CONF_APP_LED_PINNAME, LED_OFF);
InterruptIn button(MBED_CONF_APP_BUTTON_PINNAME);
static bool button_pressed = false;
static void button_press(void);
// Block device and Filesystem
SDBlockDevice sd(PTE3, PTE1, PTE2, PTE4);
FATFileSystem fs("sd", &sd);
Thread resource_thread;
NetworkInterface* network_interface = NULL;
void button_press(void)
{
button_pressed = true;
}
/////////////////////////
// SETUP.H IMPLEMENTATION
/////////////////////////
int initPlatform()
{
/* Explicit declaration to catch Block Device initialization errors. */
int sd_ret = sd.init();
if(sd_ret != BD_ERROR_OK) {
tr_error("initPlatform() - sd.init() failed with %d\n", sd_ret);
printf("SD card initialization failed. Verify that SD-card is attached.\n");
return -1;
}
tr_debug("initPlatform() - BlockDevice init OK.\n");
if(MBED_CONF_APP_BUTTON_PINNAME != NC) {
button.fall(&button_press);
}
return 0;
}
bool rmFirmwareImages()
{
palStatus_t status = PAL_SUCCESS;
status = pal_fsRmFiles(DEFAULT_FIRMWARE_PATH);
if(status == PAL_SUCCESS) {
printf("Firmware storage erased.\n");
} else if (status == PAL_ERR_FS_NO_PATH) {
printf("Firmware path not found/does not exist.\n");
} else {
printf("Firmware storage erasing failed with %" PRId32, status);
return false;
}
return true;
}
int reformat_storage()
{
int reformat_result = -1;
printf("Autoformatting the storage.\n");
if (1/*sd*/) {
// TODO
// reformat_result = fs.reformat(sd);
if (reformat_result != 0) {
printf("Autoformatting failed with error %d\n", reformat_result);
}
}
return reformat_result;
}
int run_application(int(*function)(void))
{
// application_init() runs the following initializations:
// 1. trace initialization
// 2. platform initialization
// 3. print memory statistics if MBED_HEAP_STATS_ENABLED is defined
// 4. FCC initialization.
if (!application_init()) {
printf("Initialization failed, exiting application!\n");
return 1;
}
return function();
}
// Helper function, could be moved someone sd
void print_MAC(NetworkInterface* network_interface, bool log_messages) {
#if MBED_CONF_APP_NETWORK_INTERFACE != CELLULAR_ONBOARD
const char *mac_addr = network_interface->get_mac_address();
if (mac_addr == NULL) {
if (log_messages) {
printf("ERROR - No MAC address\n");
}
return;
}
if (log_messages) {
printf("MAC address %s\n", mac_addr);
}
#endif
}
bool init_connection()
{
int connect_success = -1;
bool log_messages = 1;
srand(time(NULL));
printf("Using Ethernet\n");
network_interface = ð
connect_success = eth.connect();
if(connect_success == 0) {
if (log_messages) {
printf("Connected to Network successfully\n");
print_MAC(network_interface, log_messages);
}
} else {
if (log_messages) {
print_MAC(network_interface, log_messages);
printf("Connection to Network Failed %d!\n", connect_success);
}
return NULL;
}
const char *ip_addr = network_interface->get_ip_address();
if (ip_addr == NULL) {
if (log_messages) {
printf("ERROR - No IP address\n");
}
return NULL;
}
if (log_messages) {
printf("IP address %s\n", ip_addr);
}
if(network_interface == NULL) {
return false;
}
return true;
}
void* get_network_interface()
{
return network_interface;
}
void toggle_led(void)
{
if (MBED_CONF_APP_LED_PINNAME != NC) {
led = !led;
}
else {
printf("Virtual LED toggled\n");
}
}
void led_off(void)
{
if (MBED_CONF_APP_LED_PINNAME != NC) {
led = LED_OFF;
}
else {
printf("Virtual LED off\n");
}
}
uint8_t button_clicked(void)
{
if (button_pressed) {
button_pressed = false;
return true;
}
return false;
}
void do_wait(int timeout_ms)
{
wait_ms(timeout_ms);
}
static bool application_init_mbed_trace(void)
{
// Create mutex for tracing to avoid broken lines in logs
if(!mbed_trace_helper_create_mutex()) {
printf("ERROR - Mutex creation for mbed_trace failed!\n");
return 1;
}
// Initialize mbed trace
mbed_trace_init();
mbed_trace_mutex_wait_function_set(mbed_trace_helper_mutex_wait);
mbed_trace_mutex_release_function_set(mbed_trace_helper_mutex_release);
return 0;
}
static void reset_storage(void)
{
printf("Resets storage to an empty state.\n");
fcc_status_e delete_status = fcc_storage_delete();
if (delete_status != FCC_STATUS_SUCCESS) {
printf("Failed to delete storage - %d\n", delete_status);
}
}
static bool application_init_fcc(void)
{
fcc_status_e status = fcc_init();
if(status != FCC_STATUS_SUCCESS) {
printf("fcc_init failed with status %d! - exit\n", status);
return 1;
}
// This is designed to simplify user-experience by auto-formatting the
// primary storage if no valid certificates exist.
// This should never be used for any kind of production devices.
#ifndef MBED_CONF_APP_MCC_NO_AUTO_FORMAT
status = fcc_verify_device_configured_4mbed_cloud();
if (status != FCC_STATUS_SUCCESS) {
if (reformat_storage() != 0) {
return 1;
}
reset_storage();
}
#endif
// Resets storage to an empty state.
// Use this function when you want to clear storage from all the factory-tool generated data and user data.
// After this operation device must be injected again by using factory tool or developer certificate.
#ifdef RESET_STORAGE
reset_storage();
#endif
// Deletes existing firmware images from storage.
// This deletes any existing firmware images during application startup.
// This compilation flag is currently implemented only for mbed OS.
#ifdef RESET_FIRMWARE
bool status_erase = rmFirmwareImages();
if(status_erase == false) {
return 1;
}
#endif
#if MBED_CONF_APP_DEVELOPER_MODE == 1
printf("Start developer flow\n");
status = fcc_developer_flow();
if (status == FCC_STATUS_KCM_FILE_EXIST_ERROR) {
printf("Developer credentials already exists\n");
} else if (status != FCC_STATUS_SUCCESS) {
printf("Failed to load developer credentials - exit\n");
return 1;
}
#endif
status = fcc_verify_device_configured_4mbed_cloud();
if (status != FCC_STATUS_SUCCESS) {
printf("Device not configured for mbed Cloud - exit\n");
return 1;
}
return 0;
}
bool application_init(void)
{
if (application_init_mbed_trace() != 0) {
printf("Failed initializing mbed trace\n" );
return false;
}
if(initPlatform() != 0) {
printf("ERROR - initPlatform() failed!\n");
return false;
}
printf("Start Simple Mbed Cloud Client\n");
if (application_init_fcc() != 0) {
printf("Failed initializing FCC\n" );
return false;
}
return true;
}