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Author: MIKROE
Last Updated: 2024-10-31
Package Version: 2.1.0.10
mikroSDK Library: 2.0.0.0
Category: WIFI
Downloaded: 114 times
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License: MIT license
AWS IoT Click is a compact add-on board that allows users to easily connected to AWS IoT services and securely interact with cloud applications and other devices. This board features the ESP32-C3-MINI-1-N4-A, a small 2.4GHz WiFi (802.11 b/g/n) and Bluetooth® 5 module from Espressif Systems that use ESP32C3 series of SoC RISCV single-core microprocessor (ESP32-C3FN4) with 4MB flash in a single chip package. The module uses UART communication alongside several other features like standalone possibility via USB interface, firmware boot, JTAG for debugging, and others.
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5234_aws_iot_click.zip [577.99KB] | mikroC AI for ARM GCC for ARM Clang for ARM mikroC AI for PIC mikroC AI for PIC32 XC32 GCC for RISC-V Clang for RISC-V mikroC AI for dsPIC XC16 |
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AWS IoT Click is a compact add-on board that allows users to easily connected to AWS IoT services and securely interact with cloud applications and other devices. This board features the ESP32-C3-MINI-1-N4-A, a small 2.4GHz WiFi (802.11 b/g/n) and Bluetooth® 5 module from Espressif Systems that use ESP32C3 series of SoC RISCV single-core microprocessor (ESP32-C3FN4) with 4MB flash in a single chip package. The module uses UART communication alongside several other features like standalone possibility via USB interface, firmware boot, JTAG for debugging, and others.
We provide a library for the AWS IoT Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.
Package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.
This library contains API for AWS IoT Click driver.
awsiot_cfg_setup
Config Object Initialization function.
void awsiot_cfg_setup ( awsiot_cfg_t *cfg );
awsiot_init
Initialization function.
err_t awsiot_init ( awsiot_t *ctx, awsiot_cfg_t *cfg );
awsiot_reset_device
This function resets device by toggling the RST pin state.
void awsiot_reset_device ( awsiot_t *ctx );
awsiot_send_cmd
This function send command string by using UART serial interface.
void awsiot_send_cmd ( awsiot_t *ctx, uint8_t *cmd );
This example demonstrates the use of AWS IoT Click board by bridging the USB UART to mikroBUS UART which allows the Click board to establish a connection with the AWS IoT over the Quick Connect demo application without an AWS account.
The demo application is composed of two sections :
Initializes the driver, resets the Click board to factory default settings, reads and displays the vendor model and thing name on the USB UART, sets the WiFi credentials, and attempts to connect to the AWS Cloud. If the initial attempt fails and the error message "Failed to access network" or "Failed to login AWS (MQTT) broker" appears, check the WiFi credentials and try running the example again.
void application_init ( void )
{
log_cfg_t log_cfg; /**< Logger config object. */
awsiot_cfg_t awsiot_cfg; /**< Click config object. */
/**
* Logger initialization.
* Default baud rate: 115200
* Default log level: LOG_LEVEL_DEBUG
* @note If USB_UART_RX and USB_UART_TX
* are defined as HAL_PIN_NC, you will
* need to define them manually for log to work.
* See @b LOG_MAP_USB_UART macro definition for detailed explanation.
*/
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
awsiot_cfg_setup( &awsiot_cfg );
AWSIOT_MAP_MIKROBUS( awsiot_cfg, MIKROBUS_1 );
if ( UART_ERROR == awsiot_init( &awsiot, &awsiot_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
log_printf( &logger, "Reset device\r\n\n" );
awsiot_reset_device ( &awsiot );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
log_printf( &logger, "Factory reset\r\n" );
strcpy ( app_buf, AWSIOT_CMD_FACTORY_RESET );
awsiot_send_cmd ( &awsiot, app_buf );
awsiot_read_response ( &awsiot );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
log_printf( &logger, "Vendor model\r\n" );
strcpy ( app_buf, AWSIOT_CMD_CONF_CHECK );
strcat ( app_buf, AWSIOT_CMD_SEPARATOR );
strcat ( app_buf, AWSIOT_CONF_KEY_ABOUT );
awsiot_send_cmd ( &awsiot, app_buf );
awsiot_read_response ( &awsiot );
log_printf( &logger, "Thing name\r\n" );
strcpy ( app_buf, AWSIOT_CMD_CONF_CHECK );
strcat ( app_buf, AWSIOT_CMD_SEPARATOR );
strcat ( app_buf, AWSIOT_CONF_KEY_THING_NAME );
awsiot_send_cmd ( &awsiot, app_buf );
awsiot_read_response ( &awsiot );
log_printf( &logger, "WiFi SSID\r\n" );
strcpy ( app_buf, AWSIOT_CMD_CONF );
strcat ( app_buf, AWSIOT_CMD_SEPARATOR );
strcat ( app_buf, AWSIOT_CONF_KEY_SSID );
strcat ( app_buf, AWSIOT_CMD_SIGN_EQUAL );
strcat ( app_buf, WIFI_SSID );
awsiot_send_cmd ( &awsiot, app_buf );
awsiot_read_response ( &awsiot );
log_printf( &logger, "WiFi Password\r\n" );
strcpy ( app_buf, AWSIOT_CMD_CONF );
strcat ( app_buf, AWSIOT_CMD_SEPARATOR );
strcat ( app_buf, AWSIOT_CONF_KEY_PASSPHRASE );
strcat ( app_buf, AWSIOT_CMD_SIGN_EQUAL );
strcat ( app_buf, WIFI_PASS );
awsiot_send_cmd ( &awsiot, app_buf );
awsiot_read_response ( &awsiot );
log_printf( &logger, "Try to connect\r\n" );
strcpy ( app_buf, AWSIOT_CMD_CONNECT );
awsiot_send_cmd ( &awsiot, app_buf );
awsiot_read_response ( &awsiot );
log_info( &logger, " Application Task " );
log_printf( &logger, "Now close the UART terminal and switch to the QuickConnect app\r\n" );
Delay_ms ( 1000 );
uart_set_blocking( &logger.uart, false );
}
All data received from the USB UART will be forwarded to mikroBUS UART, and vice versa. At this point you should disconnect from the UART terminal and run the Quick Connect demo application.
void application_task ( void )
{
app_buf_len = uart_read( &logger.uart, app_buf, PROCESS_BUFFER_SIZE );
if ( app_buf_len > 0 )
{
uart_write ( &awsiot.uart, app_buf, app_buf_len );
awsiot_clear_app_buf( );
}
app_buf_len = uart_read( &awsiot.uart, app_buf, PROCESS_BUFFER_SIZE );
if ( app_buf_len > 0 )
{
uart_write ( &logger.uart, app_buf, app_buf_len );
awsiot_clear_app_buf( );
}
}
To run the demo, follow the below steps:
- If you opened a terminal application in the previous step, be sure to > disconnect that application from the serial port.
- Download the Quick Connect executable:
- Unzip the package, and follow the steps from the README file.
The demo will connect to AWS IoT and give you an URL that you can use to visualize data flowing from the device to the cloud using AT+SEND commands. The demo will run for up to two minutes, and afterwards, you will be able to type AT+SEND commands yourself and see the data coming in on the visualizer.
The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.
Other Mikroe Libraries used in the example:
Additional notes and informations
Depending on the development board you are using, you may need USB UART Click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroElektronika compilers.