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Author: MIKROE
Last Updated: 2024-10-31
Package Version: 2.1.0.14
mikroSDK Library: 2.0.0.0
Category: Sub-1 GHz Transceivers
Downloaded: 195 times
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License: MIT license
OOK TX Click is a simple wireless transmitter that operates at the frequency of 433MHz (sub-GHz). This device allows realization of a simple, low-speed wireless ad-hoc communication network between a transmitter and compatible receiver, such as the OOK RX Click.
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3634_ook_tx_click.zip [434.77KB] | 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 AVR mikroC AI for dsPIC XC16 |
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OOK TX Click is a simple wireless transmitter that operates at the frequency of 433MHz (sub-GHz). This device allows realization of a simple, low-speed wireless ad-hoc communication network between a transmitter and compatible receiver, such as the OOK RX Click.
We provide a library for the OOK TX 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 OOK TX Click driver.
ooktx_cfg_setup
Config Object Initialization function.
void ooktx_cfg_setup ( ooktx_cfg_t *cfg );
ooktx_init
Initialization function.
err_t ooktx_init ( ooktx_t *ctx, ooktx_cfg_t *cfg );
ooktx_send_data
This function builds and sends a packet of data. The packet format is as follows (MSB first, manchester IEEE 802.3): OOKTX_TRAINING_BYTES, PREABMLE, LEN, DATA_IN, CRC16 (calculated from whole packet excluding training bytes).static void ooktx_send_data ( ooktx_t *ctx, uint16_t preamble, uint8_t *data_in, uint8_t len );
This example demonstrates the use of OOK TX Click board by sending a predefined message to the receiver.
The demo application is composed of two sections :
Initialized the driver and logger.
void application_init ( void )
{
log_cfg_t log_cfg; /**< Logger config object. */
ooktx_cfg_t ooktx_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.
ooktx_cfg_setup( &ooktx_cfg );
OOKTX_MAP_MIKROBUS( ooktx_cfg, MIKROBUS_1 );
if ( DIGITAL_OUT_UNSUPPORTED_PIN == ooktx_init( &ooktx, &ooktx_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}
Sends a predefined message every 3 seconds and displays it on the USB UART.
void application_task ( void )
{
log_printf ( &logger, " Sending data: %s\r\n\n", ( char * ) OOKTX_MESSAGE );
ooktx_send_data ( &ooktx, OOKTX_PREAMBLE, OOKTX_MESSAGE, strlen ( OOKTX_MESSAGE ) );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
}
The OOK RX Click board is a compatible receiver for the OOK TX Click. Here are a few steps for troubleshooting if you are experiencing issues running this example:
- Check the MCU clock configuration, use an external oscillator instead of the MCU's internal one for better accuracy on manchester data rate delay.
- Measure the actual data rate on the data line and adjust the OOKTX_MAN_BIT_LEN_US value accordingly.
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.