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#define scan_limit_reg 0x0B

#define shutdown_reg 0x0C

#define display_test_reg 0x0F

#define shutdown_cmd 0x00

#define run_cmd 0x01

#define no_test_cmd 0x00

#define test_cmd 0x01

void MAX72xx_init(void);

void MAX72xx_write(unsigned char address, unsigned char value);

MAX72xx.c

#include "MAX72xx.h"

void MAX72xx_init(void)

{

CS_DIR_OUT();

CS_HIGH();

MAX72xx_write(shutdown_reg, run_cmd);

MAX72xx_write(decode_mode_reg, 0x00);

MAX72xx_write(scan_limit_reg, 0x07);

MAX72xx_write(intensity_reg, 0x04);

MAX72xx_write(display_test_reg, test_cmd);

delay_ms(100);

MAX72xx_write(display_test_reg, no_test_cmd);

}

void MAX72xx_write(unsigned char address, unsigned char value)

{

CS_LOW();

SPI_transfer(address);

SPI_transfer(value);

CS_HIGH();

}

main.c

#include <msp430.h>

#include <string.h>

#include "delay.h"

#include "SPI.h"

#include "MAX72xx.h"

void GPIO_graceInit(void);

void BCSplus_graceInit(void);

void USI_graceInit(void);

void System_graceInit(void);

void WDTplus_graceInit(void);

Brand	Texas Instruments
Model	MSP430
Category	Microcontrollers
Language	English

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