conf_test.h File Reference

Unit test configuration.

Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.

#include <ebi.h>
#include <ebi_port.h>
#include <string.h>
#include <sysclk.h>

Macros
Debug output configuration
#define	CONF_TEST_USART   &USARTD0
	USART to redirect STDIO to. More...
#define	CONF_TEST_BAUDRATE   38400
	Baudrate of USART. More...
#define	CONF_TEST_CHARLENGTH   USART_CHSIZE_8BIT_gc
	Character length (bits) of USART. More...
#define	CONF_TEST_PARITY   USART_PMODE_DISABLED_gc
	Parity mode of USART. More...
#define	CONF_TEST_STOPBITS   false
	Stopbit configuration of USART. More...
Test configuration
#define	CONF_TEST_RAM_BASE   0x800000UL
	Base address of RAM to test. More...
#define	CONF_TEST_RAM_SIZE   0x800000UL
	Size of RAM to test. More...
Convenience macros for EBI initialization
#define	EBI_SDRAM_INITDLY   (100 * 2 * sysclk_get_per2_hz() / 1000000)
	SDRAM initialization delay in number of CLKper2 cycles (100 us) More...
#define	EBI_SDRAM_REFRESH   (16 * 2 * sysclk_get_per2_hz() / 1000000)
	SDRAM refresh interval in number of CLKper2 cycles (16 us) More...

Functions
static void	ebi_sdram_init (void)
	Initialize the EBI for on-board SDRAM. More...

#define CONF_TEST_BAUDRATE   38400

Baudrate of USART.

Note

38.4 kbaud

Referenced by main().

#define CONF_TEST_CHARLENGTH   USART_CHSIZE_8BIT_gc

Character length (bits) of USART.

Note

8-bit character length

Referenced by main().

#define CONF_TEST_PARITY   USART_PMODE_DISABLED_gc

Parity mode of USART.

Note

No parity check

Referenced by main().

#define CONF_TEST_RAM_BASE   0x800000UL

Base address of RAM to test.

Note

The EBI is set up so that external RAM starts at 0x800000.

Referenced by ebi_sdram_init().

#define CONF_TEST_RAM_SIZE   0x800000UL

Size of RAM to test.

Note

The external SDRAM device on Xplain is of size 8 MB.

#define CONF_TEST_STOPBITS   false

Stopbit configuration of USART.

Note

No extra stopbit, i.e., use 1

Referenced by main().

#define CONF_TEST_USART   &USARTD0

USART to redirect STDIO to.

Note

USART0 on PORTD (RX on PD2, TX on PD3)

Referenced by main().

#define EBI_SDRAM_INITDLY   (100 * 2 * sysclk_get_per2_hz() / 1000000)

SDRAM initialization delay in number of CLKper2 cycles (100 us)

Referenced by ebi_sdram_init().

#define EBI_SDRAM_REFRESH   (16 * 2 * sysclk_get_per2_hz() / 1000000)

SDRAM refresh interval in number of CLKper2 cycles (16 us)

Referenced by ebi_sdram_init().

static void ebi_sdram_init ( void  )

static

Initialize the EBI for on-board SDRAM.

This function initializes the EBI according to the parameters specific to the on-board SDRAM chip(s). It is defined in conf_test.h.

References CONF_TEST_RAM_BASE, EBI_CS_ASPACE_8MB_gc, ebi_cs_set_address_size(), ebi_cs_set_base_address(), ebi_cs_set_mode(), ebi_cs_write_config(), ebi_enable_cs(), EBI_PORT_3PORT, EBI_PORT_SDRAM, EBI_SDRAM_CS, EBI_SDRAM_INITDLY, ebi_sdram_is_ready(), EBI_SDRAM_REFRESH, ebi_sdram_set_cas_latency(), ebi_sdram_set_col_bits(), ebi_sdram_set_initialization_delay(), ebi_sdram_set_mode(), ebi_sdram_set_mode_delay(), ebi_sdram_set_refresh_period(), ebi_sdram_set_row_bits(), ebi_sdram_set_row_cycle_delay(), ebi_sdram_set_row_to_col_delay(), ebi_sdram_set_row_to_precharge_delay(), ebi_sdram_set_self_refresh_to_active_delay(), ebi_sdram_set_write_recovery_delay(), ebi_sdram_write_config(), and ebi_setup_port().

Referenced by main().