at24cxx_example.c File Reference

AT24CXX Component Example for SAM.

Copyright (c) 2011-2018 Microchip Technology Inc. and its subsidiaries.

#include "asf.h"

Macros
#define	AT24C_MEM_ADDR   0x0
	Memory Start Address of AT24CXX chips. More...
#define	AT24C_TWI_CLK   400000
	TWI Bus Clock 400kHz. More...
#define	MEMORY_PATTERN   0xFF
#define	PAGE_ADDR   3
#define	PAGE_SIZE   128
#define	STRING_EOL   "\r"
#define	STRING_HEADER
#define	TEST_DATA_LENGTH   (sizeof(test_data_tx)/sizeof(uint8_t))
	Data to be sent. More...

Functions
static void	configure_console (void)
	Configure the Console UART. More...
int	main (void)
	Application entry point for AT24CXX Component Example. More...

Variables
volatile uint32_t	dw_ms_ticks = 0
	Global timestamp in milliseconds since the start of application. More...
uint8_t	page_read_buf [PAGE_SIZE]
uint8_t	page_write_buf [PAGE_SIZE]
static uint8_t	test_data_rx [TEST_DATA_LENGTH] = { 0 }
	Reception buffer. More...
static const uint8_t	test_data_tx []

#define AT24C_MEM_ADDR   0x0

Memory Start Address of AT24CXX chips.

Referenced by main().

#define AT24C_TWI_CLK   400000

TWI Bus Clock 400kHz.

Referenced by main().

#define MEMORY_PATTERN   0xFF

Referenced by main().

#define PAGE_ADDR   3

Referenced by main().

#define PAGE_SIZE   128

Referenced by main().

#define STRING_EOL   "\r"

#define STRING_HEADER

Value:

"--AT24CXX Example --\r\n" \
        "-- "BOARD_NAME" --\r\n" \
        "-- Compiled: "__DATE__" "__TIME__" --"STRING_EOL

Referenced by main().

#define TEST_DATA_LENGTH   (sizeof(test_data_tx)/sizeof(uint8_t))

Data to be sent.

Referenced by main().

static void configure_console ( void  )

static

Configure the Console UART.

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

Referenced by main().

int main

(

void

)

Application entry point for AT24CXX Component Example.

Returns

Unused (ANSI-C compatibility).

References AT24C_MEM_ADDR, AT24C_READ_SUCCESS, AT24C_TWI_CLK, AT24C_WRITE_SUCCESS, at24cxx_fill_pattern(), at24cxx_read_continuous(), at24cxx_read_page(), at24cxx_write_continuous(), at24cxx_write_page(), BOARD_AT24C_TWI_INSTANCE, board_init(), configure_console(), ioport_set_pin_level(), twi_options::master_clk, MEMORY_PATTERN, PAGE_ADDR, PAGE_SIZE, twi_options::speed, STRING_HEADER, sysclk_get_cpu_hz(), sysclk_init(), TEST_DATA_LENGTH, twi_master_setup(), and TWI_SUCCESS.

volatile uint32_t dw_ms_ticks = 0

Global timestamp in milliseconds since the start of application.

uint8_t page_read_buf[PAGE_SIZE]

Referenced by run_test_page_access().

uint8_t page_write_buf[PAGE_SIZE]

Referenced by run_test_page_access().

uint8_t test_data_rx[TEST_DATA_LENGTH] = { 0 }

static

Reception buffer.

const uint8_t test_data_tx[]

static

Initial value:

= {
    'S', 'A', 'M', ' ', 'A', 'T', '2', '4', 'C', 'X', 'X', ' ', 'E',
    'X', 'A', 'M', 'P', 'L', 'E'
}