twi_slave_example.c File Reference

megaRF example for twi as slave

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

#include "asf.h"
#include <conf_twi.h>

Macros
#define	SLAVE_BUS_ADDR   0xB0 /* !< TWI slave bus address */
#define	TWI_GCE   0x01 /* !< TWI slave general call enable */

Functions
int	main (void)
	TWI Slave Example Main. More...
static void	twi_Receive_Success (void)
	TWI receive success indication through yellow LED On. More...
static void	twi_Transmission_Failure (void)
	TWI transmission failure indication through red LED On. More...
static void	twi_Transmit_Success (void)
	TWI transmit success indication through green LED On. More...

Slave memory Test Pattern Constants
#define	PATTERN_TEST_LENGTH   sizeof(test_pattern)
const uint8_t	test_pattern []
uint8_t	data_received [PATTERN_TEST_LENGTH] = {0}

#define PATTERN_TEST_LENGTH   sizeof(test_pattern)

#define SLAVE_BUS_ADDR   0xB0 /* !< TWI slave bus address */

Referenced by main().

#define TWI_GCE   0x01 /* !< TWI slave general call enable */

Referenced by main().

int main

(

void

)

TWI Slave Example Main.

Main function.

The SAM3X_EK, SAM3X Arduino board and SAM4C_EK use two bytes length internal address EEPROM.

References board_init(), cpu_irq_enable, data_buffer, data_received, slave_data_buffer_t::rx_buffer, SLAVE_BUS_ADDR, sysclk_enable_peripheral_clock(), sysclk_init(), test_pattern, TWI_GCE, TWI_IDLE, twi_Receive_Success(), twi_slave_init(), twi_slave_start(), twi_slave_state_get(), twi_slave_status_get(), TWI_STATUS_NO_STATE, TWI_STATUS_RX_COMPLETE, TWI_STATUS_TX_COMPLETE, twi_Transmission_Failure(), and twi_Transmit_Success().

static void twi_Receive_Success ( void  )

static

TWI receive success indication through yellow LED On.

References LED_On, and twi_slave_status_reset().

Referenced by main().

static void twi_Transmission_Failure ( void  )

static

TWI transmission failure indication through red LED On.

References LED_On, and twi_slave_status_reset().

Referenced by main().

static void twi_Transmit_Success ( void  )

static

TWI transmit success indication through green LED On.

References LED_On, and twi_slave_status_reset().

Referenced by main().

uint8_t data_received[PATTERN_TEST_LENGTH] = {0}

Referenced by main(), sio2host_rx(), and sio2ncp_rx().

const uint8_t test_pattern[]

Initial value:

= {
    0x05,
    0x15,
    0x25,
    0x35,
    0x45,
    0x55,
    0x65,
    0x75,
    0x85
}