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Author: MIKROE
Last Updated: 2024-10-31
Package Version: 2.1.0.10
mikroSDK Library: 2.0.0.0
Category: Clock generator
Downloaded: 130 times
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License: MIT license
Clock Gen 4 Click is a compact add-on board that contains both a clock generator and a multiplier/jitter reduced clock frequency synthesizer. This board features the CS2200-CP, an analog PLL architecture comprised of a Delta-Sigma fractional-N frequency synthesizer from Cirrus Logic. This clocking device utilizes a programmable phase lock loop and allows frequency synthesis and clock generation from a stable reference clock. It generates a low-jitter PLL clock from an external crystal, supports both I²C and SPI for full software control, and also has configurable auxiliary clock output. This Click board™ is suitable for MCU clock source, or in applications like digital effects processors, digital mixing consoles, and many more.
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DOWNLOAD LINK | RELATED COMPILER | CONTAINS |
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Clock Gen 4 Click is a compact add-on board that contains both a clock generator and a multiplier/jitter reduced clock frequency synthesizer. This board features the CS2200-CP, an analog PLL architecture comprised of a Delta-Sigma fractional-N frequency synthesizer from Cirrus Logic. This clocking device utilizes a programmable phase lock loop and allows frequency synthesis and clock generation from a stable reference clock. It generates a low-jitter PLL clock from an external crystal, supports both I²C and SPI for full software control, and also has configurable auxiliary clock output. This Click board™ is suitable for MCU clock source, or in applications like digital effects processors, digital mixing consoles, and many more.
We provide a library for the ClockGen4 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 ClockGen4 Click driver.
clockgen4_cfg_setup
Config Object Initialization function.
void clockgen4_cfg_setup ( clockgen4_cfg_t *cfg );
clockgen4_init
Initialization function.
err_t clockgen4_init ( clockgen4_t *ctx, clockgen4_cfg_t *cfg );
clockgen4_default_cfg
Click Default Configuration function.
err_t clockgen4_default_cfg ( clockgen4_t *ctx );
clockgen4_dev_ctl
Function is used to write to device control register in order to apply settings.
void clockgen4_dev_ctl ( clockgen4_t *ctx, uint8_t dev_ctl );
clockgen4_dev_cfg
Function is used to write to device configuration 1 register in order to apply settings.
void clockgen4_dev_cfg ( clockgen4_t *ctx, uint8_t dev_cfg );
clockgen4_glob_cfg
Function is used to write to function configuration 2 register in order to apply settings.
void clockgen4_glob_cfg ( clockgen4_t *ctx, uint8_t glob_cfg );
This example demonstrates the uses of Clock Gen 4 Click which is based on CS2200-CP for changing the channel clock. The CS2200-CP is an extremely versatile system clocking device that utilizes a programmable phase lock loop. The CS2200-CP is based on an analog PLL architecture and this architecture allows for frequency synthesis and clock generation from a stable reference clock. The CS2200-CP supports both I²C and SPI for full software control.
The demo application is composed of two sections :
Initializes I2C and SPI, sets CS pin as output and starts to write log, applies default settings and adjusted ratio to obtain a frequency.
void application_init ( void ){
log_cfg_t log_cfg; /**< Logger config object. */
clockgen4_cfg_t clockgen4_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 " );
Delay_ms ( 100 );
log_printf( &logger, "---------------------" );
log_printf( &logger, " Clock Gen 4 Click " );
log_printf( &logger, "---------------------" );
// Click initialization.
clockgen4_cfg_setup( &clockgen4_cfg );
CLOCKGEN4_MAP_MIKROBUS( clockgen4_cfg, MIKROBUS_1 );
err_t init_flag = clockgen4_init( &clockgen4, &clockgen4_cfg );
if ( ( I2C_MASTER_ERROR == init_flag ) || ( SPI_MASTER_ERROR == init_flag ) ) {
log_error( &logger, " Application Init Error. " );
log_info( &logger, " Please, run program again... " );
for ( ; ; );
}
clockgen4_default_cfg ( &clockgen4 );
log_info( &logger, " Application Task " );
Delay_ms ( 100 );
}
Clock Gen 4 Click is used in this example to generate and change the clock on the output channel.
void application_task ( void ){
clockgen4_dev_ctl ( &clockgen4, CLOCKGEN4_AUX_OUT_DIS | CLOCKGEN4_CLK_OUT_EN );
log_printf( &logger, " PLL Clock \r\n" );
log_printf( &logger, " output enabled! \r\n" );
log_printf( &logger, "---------------------\r\n" );
Delay_ms ( 1000 );
clockgen4_dev_ctl ( &clockgen4, CLOCKGEN4_AUX_OUT_EN | CLOCKGEN4_CLK_OUT_DIS );
log_printf( &logger, " AUX Clock \r\n" );
log_printf( &logger, " output enabled! \r\n" );
log_printf( &logger, "---------------------\r\n" );
Delay_ms ( 1000 );
}
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.