dram  2.1.0.0
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DRAM click

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Click library

  • Author : Stefan Filipovic
  • Date : Aug 2022.
  • Type : SPI type

Software Support

We provide a library for the DRAM 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.

Library Description

This library contains API for DRAM Click driver.

Standard key functions :

Example key functions :

  • dram_memory_write This function writes a desired number of data bytes starting from the selected memory address.
    err_t dram_memory_write ( dram_t *ctx, uint32_t address, uint8_t *data_in, uint32_t len );
  • dram_memory_read This function reads a desired number of data bytes starting from the selected memory address.
    err_t dram_memory_read ( dram_t *ctx, uint32_t address, uint8_t *data_out, uint32_t len );
  • dram_memory_read_fast This function reads a desired number of data bytes starting from the selected memory address performing fast read feature.
    err_t dram_memory_read_fast ( dram_t *ctx, uint32_t address, uint8_t *data_out, uint32_t len );

Example Description

This example demonstrates the use of DRAM click board by writing specified data to the memory and reading it back.

The demo application is composed of two sections :

Application Init

Initializes the driver, resets the device and checks the communication by reading and verifying the device ID.

void application_init ( void )
{
log_cfg_t log_cfg;
dram_cfg_t dram_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
dram_cfg_setup( &dram_cfg );
DRAM_MAP_MIKROBUS( dram_cfg, MIKROBUS_1 );
if ( SPI_MASTER_ERROR == dram_init( &dram, &dram_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( DRAM_ERROR == dram_reset ( &dram ) )
{
log_error( &logger, " Reset device." );
for ( ; ; );
}
Delay_ms ( 100 );
{
log_error( &logger, " Check communication." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}

Application Task

Writes a desired number of bytes to the memory and then verifies if it is written correctly by reading from the same memory location and displaying the memory content on the USB UART.

void application_task ( void )
{
uint8_t data_buf[ 128 ] = { 0 };
log_printf ( &logger, " Memory address: 0x%.6LX\r\n", ( uint32_t ) STARTING_ADDRESS );
memcpy ( data_buf, DEMO_TEXT_MESSAGE_1, strlen ( DEMO_TEXT_MESSAGE_1 ) );
if ( DRAM_OK == dram_memory_write ( &dram, STARTING_ADDRESS, data_buf, sizeof ( data_buf ) ) )
{
log_printf ( &logger, " Write data: %s\r\n", data_buf );
Delay_ms ( 100 );
}
memset ( data_buf, 0, sizeof ( data_buf ) );
data_buf, sizeof ( data_buf ) ) )
{
log_printf ( &logger, " Read data: %s\r\n\n", data_buf );
Delay_ms ( 3000 );
}
log_printf ( &logger, " Memory address: 0x%.6LX\r\n", ( uint32_t ) STARTING_ADDRESS );
memcpy ( data_buf, DEMO_TEXT_MESSAGE_2, strlen ( DEMO_TEXT_MESSAGE_2 ) );
if ( DRAM_OK == dram_memory_write ( &dram, STARTING_ADDRESS, data_buf, sizeof ( data_buf ) ) )
{
log_printf ( &logger, " Write data: %s\r\n", data_buf );
Delay_ms ( 100 );
}
memset ( data_buf, 0, sizeof ( data_buf ) );
if ( DRAM_OK == dram_memory_read_fast ( &dram, STARTING_ADDRESS, data_buf, sizeof ( data_buf ) ) )
{
log_printf ( &logger, " Fast read data : %s\r\n\n", data_buf );
Delay_ms ( 3000 );
}
}

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:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.DRAM

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.


DRAM_ERROR
@ DRAM_ERROR
Definition: dram.h:178
dram_memory_read
err_t dram_memory_read(dram_t *ctx, uint32_t address, uint8_t *data_out, uint32_t len)
DRAM memory read function.
dram_memory_read_fast
err_t dram_memory_read_fast(dram_t *ctx, uint32_t address, uint8_t *data_out, uint32_t len)
DRAM memory read fast function.
DRAM_OK
@ DRAM_OK
Definition: dram.h:177
DEMO_TEXT_MESSAGE_2
#define DEMO_TEXT_MESSAGE_2
Definition: main.c:28
dram_check_communication
err_t dram_check_communication(dram_t *ctx)
DRAM check communication function.
dram_init
err_t dram_init(dram_t *ctx, dram_cfg_t *cfg)
DRAM initialization function.
application_task
void application_task(void)
Definition: main.c:77
DEMO_TEXT_MESSAGE_1
#define DEMO_TEXT_MESSAGE_1
Definition: main.c:27
dram_cfg_t
DRAM Click configuration object.
Definition: dram.h:153
dram_t
DRAM Click context object.
Definition: dram.h:136
dram_cfg_setup
void dram_cfg_setup(dram_cfg_t *cfg)
DRAM configuration object setup function.
dram_memory_write
err_t dram_memory_write(dram_t *ctx, uint32_t address, uint8_t *data_in, uint32_t len)
DRAM memory write function.
application_init
void application_init(void)
Definition: main.c:34
dram_reset
err_t dram_reset(dram_t *ctx)
DRAM reset function.
STARTING_ADDRESS
#define STARTING_ADDRESS
Definition: main.c:29
DRAM_MAP_MIKROBUS
#define DRAM_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: dram.h:120