Main application of SAM TCM Demo.

#include "asf.h"
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

Macros
#define	BUFF_SIZE 0x1000
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#define	DTCM_STACK_BASE ((void *)(&_sdtcm_stack))

#define	DTCM_STACK_LIMIT ((void *)(&_edtcm_stack))

#define	GET_CYCLE_COUNTER(x) x=DWT->CYCCNT;

#define	RESET_CYCLE_COUNTER()

#define	SRAM_STACK_BASE ((void *)(&_sstack))

#define	SRAM_STACK_LIMIT ((void *)(&_estack))

Functions
static void	configure_console (void)
	Configure UART console. More...

int	main (void)
	Application entry point for TCM example. More...

static uint32_t	normal_memcpy (uint8_t pDest, uint8_t pSrc, uint16_t len)

static uint32_t	recursive (uint32_t n)

static uint32_t	stack_test (uint32_t n)

static uint32_t	tcm_memcpy (uint8_t pDest, uint8_t pSrc, uint16_t len)

static void	tcm_stackinit (void)
	Change stack's location to DTCM. More...

Variables
char	_edtcm_stack

char	_estack

char	_sdtcm_stack

char	_sstack

static uint32_t	cyclecounter

uint8_t	destbuff [3 *BUFF_SIZE]

const char *	pBuffer

uint8_t	srcbuff [BUFF_SIZE]

uint8_t	tcm_destbuff [3 *BUFF_SIZE]

uint8_t	tcm_srcbuff [BUFF_SIZE]

#define BUFF_SIZE 0x1000

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Referenced by iperf_tcp_task(), iperf_udp_send(), and main().

#define DTCM_STACK_BASE ((void *)(&_sdtcm_stack))

#define DTCM_STACK_LIMIT ((void *)(&_edtcm_stack))

Referenced by tcm_stackinit().

#define GET_CYCLE_COUNTER ( x ) x=DWT->CYCCNT;

Referenced by normal_memcpy(), stack_test(), and tcm_memcpy().

#define RESET_CYCLE_COUNTER ( )

Value:

do { \
    CoreDebug->DEMCR = CoreDebug_DEMCR_TRCENA_Msk; \
    __DSB(); DWT->LAR = 0xC5ACCE55; __DSB(); \
    DWT->CTRL &= ~DWT_CTRL_CYCCNTENA_Msk; \
    DWT->CYCCNT = 0; \
    DWT->CTRL = DWT_CTRL_CYCCNTENA_Msk; \
}while(0)

Referenced by main(), normal_memcpy(), stack_test(), and tcm_memcpy().

#define SRAM_STACK_BASE ((void *)(&_sstack))

Referenced by tcm_stackinit().

#define SRAM_STACK_LIMIT ((void *)(&_estack))

Referenced by tcm_stackinit().

static void configure_console ( void )

static

Configure UART console.

References uart_rs232_options::baudrate, stdio_serial_init(), and sysclk_enable_peripheral_clock().

Referenced by main().

int main ( void )

Application entry point for TCM example.

Returns: Unused (ANSI-C compatibility).

References board_init(), BOARD_NAME, BUFF_SIZE, configure_console(), normal_memcpy(), RESET_CYCLE_COUNTER, stack_test(), sysclk_init(), tcm_memcpy(), and tcm_stackinit().

static uint32_t normal_memcpy	(	uint8_t *	pDest,
		uint8_t *	pSrc,
		uint16_t	len
	)

static

References cyclecounter, GET_CYCLE_COUNTER, and RESET_CYCLE_COUNTER.

Referenced by main().

static uint32_t recursive ( uint32_t n )

static

Referenced by stack_test().

static uint32_t stack_test ( uint32_t n )

static

References cyclecounter, GET_CYCLE_COUNTER, recursive(), and RESET_CYCLE_COUNTER.

Referenced by main().

static uint32_t tcm_memcpy	(	uint8_t *	pDest,
		uint8_t *	pSrc,
		uint16_t	len
	)

static

References cyclecounter, GET_CYCLE_COUNTER, and RESET_CYCLE_COUNTER.

Referenced by main().

static void tcm_stackinit ( void )

static

Change stack's location to DTCM.

The function changes the stack's location from SRAM to DTCM

References DTCM_STACK_LIMIT, SRAM_STACK_BASE, and SRAM_STACK_LIMIT.

Referenced by main().

char _edtcm_stack

char _estack

char _sdtcm_stack

char _sstack

uint32_t cyclecounter

static

Referenced by normal_memcpy(), stack_test(), and tcm_memcpy().

uint8_t destbuff[3 *BUFF_SIZE]

const char* pBuffer

Initial value:

= "The ARM architecture is defined in a hierarchical manner,\
where the features are described in Chapter A2\
Application Level Programmers?Model at the application level,\
with underlying system support. What features are available and how they are \
supported is defined in the architecture profiles, making the system \
level support profile specific. Deprecated features can be found in an \
appendix to this manual. See page. As stated in Privileged execution on page \
A2-13, programs can execute in a privileged or unprivileged manner. System \
level support requires privileged access, allowing it the access permissions \
to configure and control the resources. This is typically supported by an \
operating system, which provides system services to the applications, either \
transparently, or through application initiated service calls. The operating \
system is also responsible for servicing interrupts and other system events, \
making exceptions a key component of the system level programmers?model."

uint8_t srcbuff[BUFF_SIZE]

uint8_t tcm_destbuff[3 *BUFF_SIZE]

uint8_t tcm_srcbuff[BUFF_SIZE]

Microchip® Advanced Software Framework

Macros

Functions

Variables