PWM click
PWM click is a simple solution for controlling 16 PWM outputs through a single I2C interface. You can use it to control anything from a simple LED strip to a complex robot with a multitude of moving parts.
click Product page
Click library
- Author : MikroE Team
- Date : Jan 2020.
- Type : I2C type
Software Support
We provide a library for the Pwm 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 form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.
Library Description
This library contains API for Pwm Click driver.
Standard key functions :
- Config Object Initialization function.
void pwm_cfg_setup ( pwm_cfg_t *cfg );
- Initialization function.
PWM_RETVAL pwm_init ( pwm_t *ctx, pwm_cfg_t *cfg );
- Click Default Configuration function.
void pwm_default_cfg ( pwm_t *ctx );
Example key functions :
- Channel state function.
void pwm_channel_state ( pwm_t *ctx, uint8_t chann_id, uint8_t state );
- Set channel raw function.
void pwm_set_channel_raw ( pwm_t *ctx, uint8_t chann_id, uint16_t raw_off_set, uint16_t raw_dc );
- Set all channels raw function.
void pwm_set_all_raw ( pwm_t *ctx, uint16_t raw_dc );
Examples Description
This is an example that shows some of the functions that PWM click has.
The demo application is composed of two sections :
Application Init
Initalizes I2C driver, enables output, configures device, sets prescaling, configures output and makes an initial log.
{
log_cfg_t log_cfg;
log_cfg.level = LOG_LEVEL_DEBUG;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_printf( &logger, "---- Application Init ----\r\n" );
Delay_ms( 100 );
Delay_ms( 100 );
log_printf( &logger, "--------------------------\r\n" );
log_printf( &logger, " PWM Click \r\n" );
log_printf( &logger, "--------------------------\r\n" );
}
Application Task
Initalizes I2C driver, enables output, configures device, sets prescaling, configures output and makes an initial log.
{
uint16_t raw_dc;
uint8_t chann_id;
uint8_t duty_cycle;
chann_id = 0;
log_printf( &logger, "Channel 0 false state \r\n " );
log_printf( &logger, "--------------------------\r\n" );
Delay_ms( 2000 );
log_printf( &logger, "Channel 0 set raw \r\n" );
{
log_printf( &logger, " >\r\n" );
Delay_ms( 500 );
}
log_printf( &logger, "\r\n" );
log_printf( &logger, "--------------------------\r\n" );
Delay_ms( 1000 );
log_printf( &logger, "Channel 0 set \r\n" );
for ( duty_cycle = 0; duty_cycle < 100; duty_cycle += 10 )
{
log_printf( &logger, " > \r\n" );
Delay_ms( 500 );
}
log_printf( &logger, "\r\n" );
log_printf( &logger, "--------------------------\r\n" );
Delay_ms( 1000 );
log_printf( &logger, "All Channels raw set \r\n" );
{
log_printf( &logger, " >\r\n" );
Delay_ms( 500 );
}
log_printf( &logger, "\r\n" );
log_printf( &logger, "--------------------------\r\n" );
Delay_ms( 1000 );
log_printf( &logger, "All Channels set \r\n" );
for ( duty_cycle = 0; duty_cycle < 100; duty_cycle += 10 )
{
log_printf( &logger, " >\r\n" );
Delay_ms( 500 );
}
log_printf( &logger, "\r\n" );
log_printf( &logger, "--------------------------\r\n" );
Delay_ms( 1000 );
log_printf( &logger, "All Channels false state \r\n " );
log_printf( &logger, "--------------------------\r\n" );
Delay_ms( 2000 );
}
Note
The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.
Other mikroE Libraries used in the example:
- MikroSDK.Board
- MikroSDK.Log
- Click.Pwm
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. The terminal available in all Mikroelektronika compilers, or any other terminal application of your choice, can be used to read the message.