Exemplo n.º 1
0
void get_gps_data(void) {
	status_code_t gpsreturn;
	
	unsigned int bytes2Read;
	unsigned char gps_raw_pointer, gps_raw_data;
	
	
	gpsreturn = twi_master_read(&TWI_I2C400, &getgps_count);
	if (gpsreturn) return; // got some TWI error. Return
	
	bytes2Read =  (gpsbuf[0] << 8) | gpsbuf[1];
	if (!bytes2Read) return; // GPS not ready to send data. Return
	if (bytes2Read > 64) bytes2Read = 64;
	getgps_data.length = bytes2Read;
	gpsreturn = twi_master_read(&TWI_I2C400, &getgps_data );
	
	for(gps_raw_pointer =0; gps_raw_pointer < bytes2Read; gps_raw_pointer++)
	{
		gps_raw_data = gpsbuf[gps_raw_pointer];
//		cdcPutch(gps_raw_data);
		switch(gps_raw_data)
		{
			case ',': // term terminators				
			case '\r':
			case '\n':
			case '*':
				if (gps_term_offset < sizeof(gps_term))
				{
					gps_term[gps_term_offset] = 0;
					parse_gps_term();
				}
				++gps_term_number;
				gps_term_offset = 0;
				gps_checksum_term = (gps_raw_data == '*');
				if(gps_raw_data == ',') gps_parity ^= gps_raw_data;
				break;
			
			case '$': // sentence begin
				gps_term_number = gps_term_offset = 0;
				gps_parity = 0;
				gps_sentence_type = GPS_SENTENCE_OTHER;
				gps_checksum_term = false;
				gps_data_good = false;
				break;
				
			default:
				// ordinary characters
				if (gps_term_offset < sizeof(gps_term) - 1)
				gps_term[gps_term_offset++] = gps_raw_data;
				if (!gps_checksum_term)
				gps_parity ^= gps_raw_data;
		}

		
	}
	
}
Exemplo n.º 2
0
/** \brief HAL implementation of I2C receive function for ASF I2C
 * \param[in] ATCAIface instance
 * \param[in] rxdata pointer to space to receive the data
 * \param[in] ptr to expected number of receive bytes to request
 * \return ATCA_STATUS
 */
ATCA_STATUS hal_i2c_receive( ATCAIface iface, uint8_t *rxdata, uint16_t *rxlength)
{
#ifdef DEBUG_HAL
	printf("hal_i2c_receive()\r\n");
#endif
	
	ATCAIfaceCfg *cfg = atgetifacecfg(iface);
	int retries = cfg->rx_retries;
	int bus = cfg->atcai2c.bus;
	uint32_t status = !TWI_SUCCESS;
	
	//twi_package_t packet = {
	twi_packet_t packet = {	
		.chip        = cfg->atcai2c.slave_address >> 1,
		.addr[0]     = NULL,
		.addr_length = 0,
		.buffer      = (void *)rxdata,
		.length      = (uint32_t)*rxlength
	};
	
	switch(bus)
	{
		case 0:
			while(retries-- > 0 && status != TWI_SUCCESS)
			{
				//status = twi_master_read(TWI0, &packet);
				status = twi_master_read(TWI_Channel0, &packet);
			}
			break;
		case 1:
			while(retries-- > 0 && status != TWI_SUCCESS)
			{
				status = twi_master_read(TWI_Channel1, &packet);
			}
			break;
	}
	if (status != TWI_SUCCESS)
	{
		return ATCA_COMM_FAIL;
	}
	
#ifdef DEBUG_HAL
	printf("\r\nResponse Packet (size:0x%.4x)\r\n", rxlength);
	printf("Count  : %.2x\r\n", rxdata[0]);
	if (rxdata[0] > 3)
	{
		printf("Data   : "); print_array(&rxdata[1], rxdata[0]-3);
		printf("CRC    : "); print_array(&rxdata[rxdata[0]-2], 2);
	}
	printf("\r\n");
#endif
	
	return ATCA_SUCCESS;
}
Exemplo n.º 3
0
/**
 * \brief Function for show the kit data
 *
 */
static void show_kit_data(void)
{
	uint8_t request_token = EDBG_KIT_DATA_TOKEN;
	uint32_t timeout = 0;
	uint8_t i;

	/** Get the extension boards info */
	packet_rx.chip        = EDBG_ADDRESS;
	packet_rx.addr_length = 1;
	packet_rx.addr[0] = request_token;
	packet_rx.buffer      = kit_data;
	packet_rx.length      = 256;
	while (twi_master_read(EDBG_I2C_MODULE, &packet_rx) != TWI_SUCCESS) {
		/* Increment timeout counter and check if timed out. */
		if (timeout++ == TIMEOUT) {
			return;
		}
	}

	/** show kit data */
	printf("\r\n The kit data: \r\n 0x");
	for (i = 0; i < CONF_KIT_DATA_NUM; i++) {
		printf("%02x", kit_data[i]);
	}
	printf("\r\n");
}
Exemplo n.º 4
0
int requestMPUPacket(int8_t mpuAddress, uint8_t mpuRegisterAddress, volatile void *data, uint8_t dataLength)
{
	twi_packet_t packet;
	int8_t bError = 0;

	// Address the MPU in the body.
	packet.chip = mpuAddress;
	
	// We want to write to the PWR_MGMT_1 register.
	packet.addr[0] = mpuRegisterAddress;
	packet.addr[1] = 0;
	packet.addr[2] = 0;
	
	// It is a 1 byte address.
	packet.addr_length = 1;

	// Write a byte telling the MPU to reset and use a PLL clock derived
	// from the X-axis of the gyroscope.
	packet.buffer = (void *)data;

	// How many bytes do we want to write.
	packet.length = dataLength;

	if (TWI_SUCCESS != twi_master_read(TWI0, &packet))
	{
		bError = -1;
	}
	
	return(bError);
}
Exemplo n.º 5
0
/*! \brief Read device register content.
 *
 * \param reg_index Register address.
 * \returns Register content.
 */
uint8_t at42qt1060_read_reg(uint8_t reg_index)
{
uint8_t data;
twi_package_t twi_package;

	twi_package.chip = AT42QT1060_TWI_ADDRESS;
	twi_package.addr_length = 0;
	twi_package.buffer = &reg_index;
	twi_package.length = 1;
	while(twi_master_write(AT42QT1060_TWI, &twi_package)!=TWI_SUCCESS);
	/* We need a delay here to make this work although this is not
	* specified in the datasheet.
	* Also there seems to be a bug in the TWI module or the driver
	* since some delay here (code or real delay) adds about 500us
	* between the write and the next read cycle.
	*/
	cpu_delay_us(20, cpu_hz);

	twi_package.chip = AT42QT1060_TWI_ADDRESS;
	twi_package.addr_length = 0;
	twi_package.buffer = &data;
	twi_package.length = 1;
	while(twi_master_read(AT42QT1060_TWI, &twi_package)!=TWI_SUCCESS);

	return data;
}
Exemplo n.º 6
0
/*
*	EEROM read function
*
*/
int eeprom_read(void)
{
	twi_packet_t packet_rx;
	uint16_t pMemAddress;
	int configsize = sizeof(Zodiac_Config);
	
	/* Configure the data packet to be received */
	packet_rx.chip        = AT24C_ADDRESS;
	packet_rx.addr_length = EEPROM_MEM_ADDR_LENGTH;

	printf("Reading Configuration from EEPROM (%d bytes)\r\n",configsize);
	
	pMemAddress = 0;
	packet_rx.addr[0]     = pMemAddress;
	packet_rx.addr[1]     = pMemAddress >> 8;
	packet_rx.buffer      = &Zodiac_Config;
	packet_rx.length = configsize;

	if (twi_master_read(TWI0, &packet_rx) != TWI_SUCCESS)
	{
		printf("-1-\tTWI master read packet failed.\r\n");
		return -1;
	}
	
	printf("Done!\r\n");
	return 0;
}
Exemplo n.º 7
0
//returns the date
void rtc_get_date(Rtc *p_rtc, uint32_t *ul_year, uint32_t *ul_month, uint32_t *ul_day,
		      uint32_t *ul_week){
  uint32_t r;
  twi_packet_t packet_rx;
  uint8_t rx_data [8];
  int dw,dt,mo,yr;
  packet_rx.chip = RTC_ADDRESS;
  packet_rx.addr[0] = 0x3;
  packet_rx.addr_length = 1;
  packet_rx.buffer = rx_data;
  packet_rx.length = 4;
  if((r=twi_master_read(RTC_BASE_TWI, &packet_rx)) != TWI_SUCCESS){
    printf("error in get_date: %d\n",(int)r);
    return;
  }
  //convert from BCD to decimal
  dw=bcd2int(rx_data[0]);
  dt=bcd2int(rx_data[1]);
  mo=bcd2int(rx_data[2]);
  yr=bcd2int(rx_data[3])+2000;
  *ul_year = yr;
  *ul_month= mo;
  *ul_day = dt;
  *ul_week = dw;
  //printf("20%d/%d/%d (%d)\n",yr,mo,dt,dw);
}
Exemplo n.º 8
0
status_code_t vcnl40xx_read_raw_data(void)
{
	vcnl40xx_raw_data_t					raw_big16;
	
	//package.addr[0]						= REGISTER_AMBI_VALUE;
	//package.buffer						= &raw_big16.ambient_light;
	//package.length						= sizeof(raw_big16.ambient_light);
//
	//status_code_t			ret			= twi_master_read(CONF_TWIM_PORT, &package);
	//
	//package.addr[0]						= REGISTER_PROX_VALUE;
	//package.buffer						= &raw_big16.proximity;
	//package.length						= sizeof(raw_big16.proximity);
//
	//ret									= twi_master_read(CONF_TWIM_PORT, &package);
//
	package.addr[0]						= REGISTER_AMBI_VALUE;
	package.buffer						= &raw_big16;
	package.length						= sizeof(vcnl40xx_raw_data_t);
	
	status_code_t			ret			= twi_master_read(CONF_TWIM_PORT, &package);

	if(ret == STATUS_OK)
	{
		local_raw_data.ambient_light	= BE16(raw_big16.ambient_light);
		local_raw_data.proximity		= BE16(raw_big16.proximity);
	}

	return(ret);
}
Exemplo n.º 9
0
status_code_t vcnl40xx_probe(uint8_t* identification)
{
	package.addr[0]						= REGISTER_ID;
	package.length						= 1;
	package.buffer						= identification;
	
	return(twi_master_read(CONF_TWIM_PORT, &package));
}
Exemplo n.º 10
0
// Supporting function implementation
Accelerometer::Accelerometer() {

	// Initialize variables
	uint8_t value;
	
	// Configure VDDIO, SDA and SCL pins
	ioport_set_pin_dir(ACCELEROMETER_VDDIO_PIN, IOPORT_DIR_OUTPUT);
	ioport_set_pin_level(ACCELEROMETER_VDDIO_PIN, IOPORT_PIN_LEVEL_HIGH);
	ioport_set_pin_mode(ACCELEROMETER_SDA_PIN, IOPORT_MODE_WIREDANDPULL);
	ioport_set_pin_mode(ACCELEROMETER_SCL_PIN, IOPORT_MODE_WIREDANDPULL);
	
	// Configure interface
	twi_options_t options;
	options.speed = BUS_SPEED;
	options.chip = MASTER_ADDRESS;
	options.speed_reg = TWI_BAUD(sysclk_get_cpu_hz(), BUS_SPEED);
	
	// Initialize interface
	sysclk_enable_peripheral_clock(&TWI_MASTER);
	twi_master_init(&TWI_MASTER, &options);
	twi_master_enable(&TWI_MASTER);

	// Create packet
	twi_package_t packet;
	packet.addr[0] = WHO_AM_I;
	packet.addr_length = 1;
	packet.chip = ACCELEROMETER_ADDRESS;
	packet.buffer = &value;
	packet.length = 1;
	packet.no_wait = false;
	
	// Check if transmitting or receiving failed
	if(twi_master_read(&TWI_MASTER, &packet) != TWI_SUCCESS || value != DEVICE_ID)
	
		// Clear is working
		isWorking = false;
	
	// Otherwise
	else {
	
		// Reset the accelerometer
		writeValue(CTRL_REG2, CTRL_REG2_RST);
		
		// Wait enough time for accelerometer to initialize
		delay_ms(1);
		
		// Initialize settings
		initializeSettings();
		
		// Calibrate
		//calibrate();
	
		// Set is working
		isWorking = true;
	}
}
Exemplo n.º 11
0
/**
 * \brief Test if a chip answers for a given TWI address
 *
 * \param twim            Base address of the TWIM
 * \param chip_addr       Address of the chip which is searched for
 *
 * \retval STATUS_OK      Slave Found
 * \retval ERR_IO_ERROR   ANAK received or Bus Arbitration lost
 */
status_code_t twim_probe(Twim *twim, uint32_t chip_addr)
{
	uint8_t data[1] = { 0 };
	struct twim_package packet;
	packet.chip = chip_addr;
	packet.addr_length = 0;
	packet.buffer = (void *) data;
	packet.length = 1;

	return (twi_master_read(twim, &packet));
}
Exemplo n.º 12
0
uint8_t at42qt1060_get_status(void)
{
twi_package_t twi_package;
uint16_t status_data;

	twi_package.chip = AT42QT1060_TWI_ADDRESS;
	twi_package.addr_length = 0;
	twi_package.buffer = &status_data;
	twi_package.length = 2;
	twi_master_read(AT42QT1060_TWI, &twi_package);

	return MSB(status_data);
}
Exemplo n.º 13
0
signed int mpl115_read_pressure(void)
{
	unsigned int Padc, Tadc;
	signed int a0, b1, b2, c12;
	signed long lt1, lt2, lt3;
	signed long c12x2, a1, a1x1, y1, a2x2, PComp;
	twi_master_read(&TWI_I2C400, &mpl115_read_package);
	Padc = (i2c_buffer[0] << 8) | i2c_buffer[1];
	Tadc = (i2c_buffer[2] << 8) | i2c_buffer[3];
	a0 = (i2c_buffer[4] << 8) | i2c_buffer[5];
	b1 = (i2c_buffer[6] << 8) | i2c_buffer[7];
	b2 = (i2c_buffer[8] << 8) | i2c_buffer[9];
	c12 = (i2c_buffer[10] << 8) | i2c_buffer[11];
	
	// Do compensation
	Padc>>=6; 
	Tadc>>=6;
	
	//******* STEP 1 : c12x2 = c12 * Tadc
	lt1 = c12; // s(16,24) // c12 is s(14,13)+9 zero pad = s(16,15)+9 => s(16,24) left justified
	lt2 = (signed int)Tadc; // u(10,0)
	lt3 = lt1 * lt2; // s(26,24) = c12 * Tadc
	c12x2 = lt3 >> 11; // s(15,13) ? EQ 3 = c12x2
	//******* STEP 2 : a1 = b1 + c12x2
	lt1 = (signed int)b1; // s(16,13)
	lt2 = c12x2; // s(15,13)
	lt3 = lt1 + lt2; // s(16,13) = b1 + c12x2
	a1 = lt3; // s(16,13) ? EQ 4 = a1
	//******* STEP 3 : a1x1 = a1 * Padc
	lt1 = a1; // s(16,13)
	lt2 = (signed int)Padc; // u(10,0)
	lt3 = lt1 * lt2; // s(26,13) = a1 * Padc
	a1x1 = lt3; // s(26,13) ? EQ 5 = a1x1
	//******* STEP 4 y1 = a0 + a1x1
	lt1 = ((signed long)a0) << 10; // s(26,13) shifted to match a1x1 F value to add. So s(16,3)<<10 = s(26,13)
	lt2 = a1x1; // s(26,13)
	lt3 = lt1 + lt2; // s(26,13) = a0 + a1x1
	y1 = lt3; // s(26,13) ? EQ 6 = y1
	//******* STEP 5 : a2x2 = b2 * Tadc
	lt1 = (signed long)b2; // s(16,14)
	lt2 = (signed long)Tadc; // u(10,0)
	lt3 = lt1 * lt2; // s(26,14) = b2 * Tadc
	a2x2 = lt3 >> 1; // s(25,13) ? EQ 7 = a2x2
	//******* STEP 6 : PComp = y1 + a2x2
	lt1 = y1; // s(26,13)
	lt2 = a2x2; // s(25,13)
	lt3 = lt1 + lt2; // s(26,13) = y1 + a2x2
	PComp = lt3 >> 9; // s(17,4) ? EQ 8 = PComp
	return (signed int)PComp; // By calibration this is less than 16 bits
	
}
Exemplo n.º 14
0
bool twi_master_transfer(uint8_t address, uint8_t *data, uint8_t data_length,
bool issue_stop_condition) {
	bool transfer_succeeded = true;
	if (data_length > 0 && twi_master_clear_bus()) {
		NRF_TWI1->ADDRESS = (address >> 1);

		if ((address & TWI_READ_BIT) != 0) {
			transfer_succeeded = twi_master_read(data, data_length,
					issue_stop_condition);
		} else {
			transfer_succeeded = twi_master_write(data, data_length,
					issue_stop_condition);
		}
	}
Exemplo n.º 15
0
Arquivo: ms3.c Projeto: avrxml/asf
static void ms3_write_reg(uint8_t reg, uint8_t data)
{
	int twi_status;
	twi_package_t twi_package = {
		.chip         = MS3_TWI_ADDRESS,
		.addr[0]      = reg,
		.addr_length  = 1,
		.buffer       = &data,
		.length       = sizeof(data)
	};
	do {
		twi_status = twi_master_write(MS3_TWI, &twi_package);
	} while( twi_status != TWI_SUCCESS );
}


static uint16_t ms3_read_reg(uint8_t reg)
{
	int twi_status;
	uint8_t data;
	twi_package_t twi_package = {
		.chip         = MS3_TWI_ADDRESS,
		.addr[0]      = reg,
		.addr_length  = 1,
		.buffer       = &data,
		.length       = sizeof(data)
	};
	do {
		twi_status = twi_master_read(MS3_TWI, &twi_package);
	} while( twi_status != TWI_SUCCESS );

	return data;
}


static uint8_t ms3_get_volume(uint8_t ch)
{
	uint8_t gain = 0;
	switch (ch) {
	case MS3_LEFT_CHANNEL:
		gain = ms3_read_reg(MS3_HP_VOL_L);
		break;
	case MS3_RIGHT_CHANNEL:
	default:
		gain = ms3_read_reg(MS3_HP_VOL_R);
		break;
	}
	return gain;
}
Exemplo n.º 16
0
Arquivo: cs2200.c Projeto: Mazetti/asf
void cs2200_read(uint8_t address, void *buffer, uint8_t len)
{
  twi_package_t twi_packet;
  int twi_status;

  do{
    twi_packet.chip        = CS2200_TWI_SLAVE_ADDRESS;         //! TWI chip address to communicate with.
    twi_packet.addr[0]     = address;                          //! Register address/commands inside the slave chip.
    twi_packet.addr_length = 1;                                //! Length of the TWI data address segment (1-3 bytes).
    twi_packet.buffer      = buffer;                           //! Where to find the data to be written.
    twi_packet.length      = len;                              //! How many bytes do we want to write.
    twi_status=twi_master_read(CS2200_TWI, &twi_packet);
  }
  while( twi_status != TWI_SUCCESS );
}
Exemplo n.º 17
0
uint32_t adxl_read(
				uint8_t index,
				uint8_t *value,
				uint8_t addr){
					
	twi_packet_t rx;
	
	rx.addr[0]		=	index;
	rx.addr_length	=	1;
	rx.buffer		=	value;
	rx.length		=	1;
	rx.chip			=	addr;
	
	return	twi_master_read(TWI0, &rx);
}
Exemplo n.º 18
0
/**
 * \internal
 * \brief Reads out the crc value stored in the mxt-device.
 *
 * \param *device Pointer to mxt_device instance
 * \return crc_value 24-bit value representing the crc.
 */
static uint32_t mxt_get_crc_value(struct mxt_device *device)
{
	uint8_t crc[3];
	uint16_t addr = MXT_ID_BLOCK_SIZE
		+ (OBJECT_TABLE_ELEMENT_SIZE * device->info_object->obj_count);

	/* Initializing the TWI packet to send to the slave */
	twi_package_t packet = {
		.addr[0]      = addr,
		.addr[1]      = addr >> 8,
		.addr_length  = sizeof(mxt_memory_adr),
		.chip         = device->mxt_chip_adr,
		.buffer       = crc,
		.length       = sizeof(crc)
	};

	/* Read information from the slave */
	if (twi_master_read(device->interface, &packet) != STATUS_OK) {
		return ERR_IO_ERROR;
	} else {
		return ((uint32_t)crc[2] << 16) | ((uint16_t)crc[1] << 8) | crc[0];
	}
}

/**
 * \internal
 * \brief Validates the info block by comparing the calculated Compares the
 *        calculated and stored crc value.
 *
 * \param *device Pointer to mxt_device instance
 * \return Operation result status code.
 */
static status_code_t mxt_validate_info_block(struct mxt_device *device)
{
	uint32_t crc_read;
	uint32_t crc_calculated;

	mxt_calculate_infoblock_crc(device, &crc_calculated);
	crc_read = mxt_get_crc_value(device);

	if (crc_calculated != crc_read) {
		return ERR_BAD_DATA;
	} else {
		return STATUS_OK;
	}
}
Exemplo n.º 19
0
/**
 * \brief Read single byte from AT24CXX.
 *
 * \param u32_address Address of the byte to read.
 * \param p_rd_byte Pointer to memory where the read byte will be stored.
 *
 * \return AT24C_READ_SUCCESS if one byte was read, AT24C_READ_FAIL otherwise.
 */
uint32_t at24cxx_read_byte(uint32_t u32_address, uint8_t *p_rd_byte)
{
	twi_package_t twi_package;

	/* Configure the data packet to be received */
	twi_package.chip = BOARD_AT24C_ADDRESS;
	at24c_build_word_address(twi_package.addr, u32_address);
	twi_package.addr_length = AT24C_MEM_ADDR_LEN;
	twi_package.buffer = p_rd_byte;
	twi_package.length = 1;

	if (twi_master_read(BOARD_AT24C_TWI_INSTANCE, &twi_package) !=
			TWI_SUCCESS) {
		return AT24C_READ_FAIL;
	}

	return AT24C_READ_SUCCESS;
}
Exemplo n.º 20
0
/**
 * \brief Read data from the specified page in AT24CXX.
 *
 * \param u32_page_address  The page number.
 * \param u32_page_size The size of the page (which varies with the chips).
 * \param p_rd_buffer Pointer to array where the bytes read are to be stored.
 *
 * \return AT24C_READ_SUCCESS if the page was read, AT24C_READ_FAIL otherwise.
 */
uint32_t at24cxx_read_page(uint32_t u32_page_address,
		uint32_t u32_page_size, uint8_t *p_rd_buffer)
{
	twi_package_t twi_package;
	uint32_t start_address = (u32_page_address * u32_page_size) & 0xFFFF;

	/* Configure the data packet to be received */
	twi_package.chip = BOARD_AT24C_ADDRESS;
	at24c_build_word_address(twi_package.addr, start_address);
	twi_package.addr_length = AT24C_MEM_ADDR_LEN;
	twi_package.buffer = p_rd_buffer;
	twi_package.length = u32_page_size;

	if (twi_master_read(BOARD_AT24C_TWI_INSTANCE, &twi_package) !=
			TWI_SUCCESS) {
		return AT24C_READ_FAIL;
	}

	return AT24C_READ_SUCCESS;
}
Exemplo n.º 21
0
/*! \brief Read temperature from TMP100 device
 *
 * Returned temperature reading can be converted to degrees C, by using the formula:
 * temp = 128.0 / 32768 * tmp100().i;
 *
 * \retval I2C status.
 */
uint8_t tmp100_read(uint8_t i2c_address)
{
	uint8_t status;
	twi_package_t packet;

	xSemaphoreTake( mutexI2C, portMAX_DELAY );

	packet.chip = i2c_address;
	packet.addr = 0x00;
	packet.addr_length = 0;
	packet.buffer = &tmp100_data;
	packet.length = 2;

	status = twi_master_read(MOBO_TWI, &packet);

	// Release I2C port
	xSemaphoreGive( mutexI2C );

	return status;
}
Exemplo n.º 22
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/**
 * \brief HAL implementation of I2C receive function for ASF I2C
 *
 * \param[in] iface     instance
 * \param[in] rxdata    pointer to space to receive the data
 * \param[in] rxlength  ptr to expected number of receive bytes to request
 *
 * \return ATCA_STATUS
 */
ATCA_STATUS hal_i2c_receive(ATCAIface iface, uint8_t *rxdata, uint16_t *rxlength)
{
#ifdef DEBUG_HAL
	printf("hal_i2c_receive()\r\n");
#endif

	ATCAIfaceCfg *cfg = atgetifacecfg(iface);
	// set to default i2c bus
	if (cfg->atcai2c.bus > MAX_I2C_BUSES - 1)
		cfg->atcai2c.bus = 0;
	int bus = cfg->atcai2c.bus;
	int retries = cfg->rx_retries;
	uint32_t status = !TWI_SUCCESS;

	twi_package_t packet = {
		.chip			= cfg->atcai2c.slave_address >> 1,
		.addr[0]     = NULL,
		.addr_length	= 0,
		.buffer			= (void*)rxdata,
		.length			= (uint32_t)*rxlength
	};

	while (retries-- > 0 && status != TWI_SUCCESS)
		status = twi_master_read(i2c_hal_data[bus]->twi_master_instance, &packet);
	if (status != TWI_SUCCESS)
		return ATCA_COMM_FAIL;

#ifdef DEBUG_HAL
	printf("\r\nResponse Packet (size:0x%.4x)\r\n", rxlength);
	printf("Count  : %.2x\r\n", rxdata[0]);
	if (rxdata[0] > 3) {
		printf("Data   : "); print_array(&rxdata[1], rxdata[0] - 3);
		printf("CRC    : "); print_array(&rxdata[rxdata[0] - 2], 2);
	}
	printf("\r\n");
#endif

	return ATCA_SUCCESS;
}
Exemplo n.º 23
0
//returns unix timestamp 
void rtc_get_time(Rtc *p_rtc, uint32_t *ul_hour, uint32_t *ul_minute, uint32_t *ul_second){
  uint32_t r;
  twi_packet_t packet_rx;
  uint8_t rx_data [8];
  int sc,mn,hr;
  packet_rx.chip = RTC_ADDRESS;
  packet_rx.addr[0] = 0x0;
  packet_rx.addr_length = 1;
  packet_rx.buffer = rx_data;
  packet_rx.length = 3;
  if((r=twi_master_read(RTC_BASE_TWI, &packet_rx)) != TWI_SUCCESS){
    printf("error reading RTC: %d\n",(int)r);
    return;
  }
  //convert from BCD to decimal
  sc=bcd2int(rx_data[0]);
  mn=bcd2int(rx_data[1]);
  hr=bcd2int(rx_data[2]);
  *ul_hour = hr;
  *ul_minute = mn;
  *ul_second = sc;
  //  printf("%d:%d:%d\n",hr,mn,sc);
}
Exemplo n.º 24
0
/**
 * \brief Function for show the extension boards information
 *
 */
static void show_extension_boards_information(void)
{
	uint8_t request_token = EDBG_EXTEN_BOARDS_TOKEN;
	uint32_t timeout = 0;
	uint8_t board_num = 0;
	uint8_t i,j;

	/** Get the extension boards info */
	packet_rx.chip        = EDBG_ADDRESS;
	packet_rx.addr_length = 1;
	packet_rx.addr[0] = request_token;
	packet_rx.buffer      = read_buffer;
	packet_rx.length      = 1024;
	while (twi_master_read(EDBG_I2C_MODULE, &packet_rx) != TWI_SUCCESS) {
		/* Increment timeout counter and check if timed out. */
		if (timeout++ == TIMEOUT) {
			return;
		}
	}

	/** Check and show info */
	extension_map[0] = read_buffer[0];
	extension_map[1] = read_buffer[1];

	for (i = 0; i < 2; i++) {
		for (j = 1; j <= 8; j++) {
			if (extension_map[1 - i] & 0x01) {
				/** show extension board info */
 				printf("\r\n Extension board %d detected \r\n", (i * 8) + j);
				decode_board_info(&read_buffer[2 + 64 * board_num]);
				board_num++;
			}
			extension_map[1 - i] = extension_map[1 - i] >> 1;
		}
	}
}
Exemplo n.º 25
0
ATCA_STATUS hal_i2c_wake(ATCAIface iface)
{
	ATCAIfaceCfg *cfg = atgetifacecfg(iface);
	int bus = cfg->atcai2c.bus;
	int retries = cfg->rx_retries;
	uint32_t bdrt = cfg->atcai2c.baud;
	int status = !STATUS_OK;
	uint8_t data[4], expected[4] = { 0x04, 0x11, 0x33, 0x43 };

	if ( bdrt != 100000 )  // if not already at 100KHz, change it
		change_i2c_speed( iface, 100000 );

	// Send the wake by writing to an address of 0x00
	twi_package_t packet = {
		.addr_length	= 0,        // TWI slave memory address data size
		.chip			= 0x00,     // TWI slave bus address
		.buffer			= &data[0], // transfer data source buffer
		.length			= 0         // transfer data size (bytes)
	};


	// Send the 00 address as the wake pulse
	twi_master_write(i2c_hal_data[bus]->i2c_master_instance, &packet ); // part will NACK, so don't check for status

	atca_delay_us(cfg->wake_delay);                                     // wait tWHI + tWLO which is configured based on device type and configuration structure

	packet.chip = cfg->atcai2c.slave_address >> 1;
	packet.length = 4;
	packet.buffer = data;

	while ( retries-- > 0 && status != STATUS_OK )
		status = twi_master_read(i2c_hal_data[bus]->i2c_master_instance, &packet);

	if ( status != STATUS_OK )
		return ATCA_COMM_FAIL;

	// if necessary, revert baud rate to what came in.
	if ( bdrt != 100000 )
		change_i2c_speed( iface, bdrt );

	if ( memcmp( data, expected, 4 ) == 0 )
		return ATCA_SUCCESS;

	return ATCA_COMM_FAIL;
}

/** \brief idle CryptoAuth device using I2C bus
 * \param[in] iface  interface to logical device to idle
 */

ATCA_STATUS hal_i2c_idle(ATCAIface iface)
{
	ATCAIfaceCfg *cfg = atgetifacecfg(iface);
	int bus = cfg->atcai2c.bus;
	uint8_t data[4];

	twi_package_t packet = {
		.addr_length	= 0,                                // TWI slave memory address data size
		.chip			= cfg->atcai2c.slave_address >> 1,  // TWI slave bus address
		.buffer			= &data[0],                         // transfer data source buffer
		.length			= 1                                 // transfer data size (bytes)
	};

	data[0] = 0x02;  // idle word address value
	if ( twi_master_write((i2c_hal_data[bus]->i2c_master_instance), &packet) != STATUS_OK )
		return ATCA_COMM_FAIL;

	return ATCA_SUCCESS;

}

/** \brief sleep CryptoAuth device using I2C bus
 * \param[in] iface  interface to logical device to sleep
 */

ATCA_STATUS hal_i2c_sleep(ATCAIface iface)
{
	ATCAIfaceCfg *cfg = atgetifacecfg(iface);
	int bus = cfg->atcai2c.bus;
	uint8_t data[4];

	twi_package_t packet = {
		.addr_length	= 0,                                // TWI slave memory address data size
		.chip			= cfg->atcai2c.slave_address >> 1,  // TWI slave bus address
		.buffer			= &data[0],                         // transfer data source buffer
		.length			= 1                                 // transfer data size (bytes)
	};

	data[0] = 0x01;  // sleep word address value
	if ( twi_master_write((i2c_hal_data[bus]->i2c_master_instance), &packet) != STATUS_OK )
		return ATCA_COMM_FAIL;

	return ATCA_SUCCESS;
}

/** \brief manages reference count on given bus and releases resource if no more refences exist
 * \param[in] hal_data - opaque pointer to hal data structure - known only to the HAL implementation
 */

ATCA_STATUS hal_i2c_release( void *hal_data )
{
	ATCAI2CMaster_t *hal = (ATCAI2CMaster_t*)hal_data;

	i2c_bus_ref_ct--;  // track total i2c bus interface instances for consistency checking and debugging

	// if the use count for this bus has gone to 0 references, disable it.  protect against an unbracketed release
	if ( hal && --(hal->ref_ct) <= 0 && i2c_hal_data[hal->bus_index] != NULL ) {
		twi_master_disable(hal->i2c_master_instance);
		free(i2c_hal_data[hal->bus_index]);
		i2c_hal_data[hal->bus_index] = NULL;
	}

	return ATCA_SUCCESS;
}
Exemplo n.º 26
0
/**
 * \internal
 * \brief This test sends a packet from the master, and checks
 * that the sending happens without errors. Master is megaRF device and the slave 
 * is on board EEPROM.Configuring EEPROM as slave is not required.
 * \param test Current test case.
 */
static void run_twi_master_send_test(const struct test_case *test)
{
	status_code_t master_status;
	volatile uint64_t delay=0;
	
	// Package to send
	twi_package_t packet = {
		.addr[0]         = (uint8_t) SLAVE_MEM_ADDR, /* TWI slave memory
		                                         * address data */
		.addr_length  = (uint8_t)SLAVE_MEM_ADDR_LENGTH, /* TWI slave
		                                                 * memory
		                                                 * address data
		                                                 * size */
		.chip         = TWI_SLAVE_ADDR, /* TWI slave bus address */
		.buffer       = (void *)test_pattern, /* transfer data source
		                                       * buffer */
		.length       = PATTERN_TEST_LENGTH /* transfer data size
				                            * (bytes) */
    };

	/* TWI master initialization options. */
	twi_master_options_t m_options = {
		.speed      = TWI_SPEED,
		.chip  = TWI_SLAVE_ADDR,
		
	};
	m_options.baud_reg = TWI_CLOCK_RATE(sysclk_get_cpu_hz(), m_options.speed);

	// Initialize TWI_MASTER
	sysclk_enable_peripheral_clock(TWI_MASTER);
	twi_master_init(TWI_MASTER, &m_options);

	// Send package to slave
	master_status = twi_master_write(TWI_MASTER, &packet);
        
    /* Write completion time for EEPROM */
	for(delay=0;delay<10000;delay++);

	test_assert_true(test, master_status == STATUS_OK,
			"Master write not ok");
}

/**
 * \internal
 * \brief This test requests previously sent packet to be sent from the slave,
 * and checks that the correct packet is received by the master. Master is 
 * megaRF device and the slave is on board EEPROM.Configuring EEPROM as slave 
 * is not required.
 * \param test Current test case.
 */
static void run_twi_master_recv_test(const struct test_case *test)
{
	uint8_t i = 0;
	uint8_t recv_pattern[PATTERN_TEST_LENGTH] = {0};

	// Package to send
	twi_package_t packet = {
		.addr[0]         = (uint8_t) SLAVE_MEM_ADDR, /* TWI slave memory
		                                         * address data */
		.addr_length  = (uint8_t)SLAVE_MEM_ADDR_LENGTH, /* TWI slave
		                                                 * memory
		                                                 * address data
		                                                 * size */
		.chip        = TWI_SLAVE_ADDR,
		.buffer      = (void *)recv_pattern,
		.length      = PATTERN_TEST_LENGTH,
	};
	
	/* TWI master initialization options. */
	twi_master_options_t m_options = {
		.speed      = TWI_SPEED,
		.chip  = TWI_SLAVE_ADDR,
		
	};
	m_options.baud_reg = TWI_CLOCK_RATE(sysclk_get_cpu_hz(), m_options.speed);

	// Initialize TWI_MASTER
	sysclk_enable_peripheral_clock(TWI_MASTER);
	twi_master_init(TWI_MASTER, &m_options);

	// Send package to slave
	twi_master_read(TWI_MASTER, &packet);

	for (i = 0; i < PATTERN_TEST_LENGTH; i++) {
		test_assert_true(test, recv_pattern[i] == test_pattern[i],
				"Wrong twi data[%d] received, %d != %d", i,
				recv_pattern[i],
				test_pattern[i]);
	}
}

//@}

/**
 * \brief Run TWI unit tests
 *
 * Initializes the clock system, board and serial output, then sets up the
 * TWI unit test suite and runs it.
 */
int main(void)
{
	const usart_serial_options_t usart_serial_options = {
		.baudrate   = CONF_TEST_BAUDRATE,
		.charlength = CONF_TEST_CHARLENGTH,
		.paritytype = CONF_TEST_PARITY,
		.stopbits   = CONF_TEST_STOPBITS,
	};

	sysclk_init();
	board_init();
	stdio_serial_init(CONF_TEST_USART, &usart_serial_options);

	// Define single ended conversion test cases
	DEFINE_TEST_CASE(twi_master_send_test, NULL,
			run_twi_master_send_test, NULL,
			"Sending packet from master test");
	DEFINE_TEST_CASE(twi_master_recv_test, NULL,
			run_twi_master_recv_test, NULL,
			"Receiving packet from slave test");

	// Put test case addresses in an array
	DEFINE_TEST_ARRAY(twi_tests) = {
		&twi_master_send_test,
		&twi_master_recv_test,
	};

	// Define the test suite
	DEFINE_TEST_SUITE(twi_suite, twi_tests,
			"MEGARF TWI driver test suite");

	// Run all tests in the suite
	test_suite_run(&twi_suite);

	while (1) {
		// Intentionally left empty.
	}
}
Exemplo n.º 27
0
signed int se95_read(void)
{
	twi_master_read(&TWI_I2C400, &se95_read_package);
	return (i2c_buffer[0] << 8) | i2c_buffer[1];
}
Exemplo n.º 28
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static void ds2483_read(ds2483_dev_t *dev, uint8_t len, uint8_t *buf) {
	twi_master_read(dev->twim, DS2483_I2C_ADDR, len, buf);
}
Exemplo n.º 29
0
/**
 * \internal
 * \brief This test sends a packet from the master, and checks
 * that the sending happens without errors.
 *
 * \param test Current test case.
 */
static void run_twi_master_send_test(
		const struct test_case *test)
{
	status_code_t master_status;
	// Package to send
	twi_package_t packet = {
		// No address or command
		.addr_length = 0,
		// issue to slave
		.chip        = TWI_SLAVE_ADDR,
		.buffer      = (void *)test_pattern,
		.length      = PATTERN_TEST_LENGTH,
		// Wait if bus is busy
		.no_wait     = false
	};

	// TWI master options
	twi_options_t m_options = {
		.speed = TWI_SPEED,
		.chip  = TWI_MASTER_ADDR,
		.speed_reg = TWI_BAUD(sysclk_get_cpu_hz(), TWI_SPEED)
	};

	irq_initialize_vectors();

	// Initialize TWI_MASTER
	sysclk_enable_peripheral_clock(&TWI_MASTER);
	twi_master_init(&TWI_MASTER, &m_options);
	twi_master_enable(&TWI_MASTER);

	// Initialize TWI_SLAVE
	sysclk_enable_peripheral_clock(&TWI_SLAVE);
	TWI_SlaveInitializeDriver(&slave, &TWI_SLAVE, *slave_process);
	TWI_SlaveInitializeModule(&slave, TWI_SLAVE_ADDR,
			TWI_SLAVE_INTLVL_MED_gc);

	cpu_irq_enable();

	// Send package to slave
	master_status = twi_master_write(&TWI_MASTER, &packet);

	test_assert_true(test, master_status == STATUS_OK,
			"Master write not ok");
}

/**
 * \internal
 * \brief This test sends a packet from the master to the slave,
 * and checks that the correct packet is received.
 *
 * \param test Current test case.
 */
static void run_twi_slave_recv_test(
		const struct test_case *test)
{
	uint8_t i = 0;

	// Package to send
	twi_package_t packet = {
		// No address or command to issue to slave
		.addr_length = 0,
		.chip        = TWI_SLAVE_ADDR,
		.buffer      = (void *)test_pattern,
		.length      = PATTERN_TEST_LENGTH,
		// Wait if bus is busy
		.no_wait      = false
	};

	// TWI master options
	twi_options_t m_options = {
		.speed = TWI_SPEED,
		.chip  = TWI_MASTER_ADDR,
		.speed_reg = TWI_BAUD(sysclk_get_cpu_hz(), TWI_SPEED)
	};

	irq_initialize_vectors();

	// Initialize TWI_MASTER
	sysclk_enable_peripheral_clock(&TWI_MASTER);
	twi_master_init(&TWI_MASTER, &m_options);
	twi_master_enable(&TWI_MASTER);

	// Initialize TWI_SLAVE
	for (i = 0; i < TWIS_SEND_BUFFER_SIZE; i++) {
		slave.receivedData[i] = 0;
	}
	sysclk_enable_peripheral_clock(&TWI_SLAVE);
	TWI_SlaveInitializeDriver(&slave, &TWI_SLAVE, *slave_process);
	TWI_SlaveInitializeModule(&slave, TWI_SLAVE_ADDR,
			TWI_SLAVE_INTLVL_MED_gc);

	cpu_irq_enable();

	// Send package to slave
	twi_master_write(&TWI_MASTER, &packet);

	// Wait for slave to receive packet and check that packet is correct
	do {} while (slave.result != TWIS_RESULT_OK);
	for (i = 0; i < PATTERN_TEST_LENGTH; i++) {
		test_assert_true(test, slave.receivedData[i] == test_pattern[i],
				"Wrong data[%d] received, %d != %d", i,
				slave.receivedData[i],
				test_pattern[i]);
	}
}

/**
 * \internal
 * \brief This test requests a packet to be sent from the slave,
 * and checks that the correct packet is received by the master.
 *
 * \param test Current test case.
 */
static void run_twi_master_recv_test(const struct test_case *test)
{
	uint8_t i = 0;
	uint8_t recv_pattern[TWIS_SEND_BUFFER_SIZE] = {0};

	// Package to send
	twi_package_t packet = {
		// No address or command to issue to slave
		.addr_length = 0,
		.chip        = TWI_SLAVE_ADDR,
		.buffer      = (void *)recv_pattern,
		// Wait if bus is busy
		.length      = PATTERN_TEST_LENGTH,
		.no_wait     = false
	};
	// TWI master options
	twi_options_t m_options = {
		.speed = TWI_SPEED,
		.chip  = TWI_MASTER_ADDR,
		.speed_reg = TWI_BAUD(sysclk_get_cpu_hz(), TWI_SPEED)
	};

	// Data for slave to send, same as test_pattern
	slave.sendData[0] = 0x55;
	slave.sendData[1] = 0xA5;
	slave.sendData[2] = 0x5A;
	slave.sendData[3] = 0x77;
	slave.sendData[4] = 0x99;

	irq_initialize_vectors();

	// Initialize TWI_MASTER
	sysclk_enable_peripheral_clock(&TWI_MASTER);
	twi_master_init(&TWI_MASTER, &m_options);
	twi_master_enable(&TWI_MASTER);

	// Initialize TWI_SLAVE
	for (i = 0; i < TWIS_SEND_BUFFER_SIZE; i++) {
		slave.receivedData[i] = 0;
	}
	sysclk_enable_peripheral_clock(&TWI_SLAVE);
	TWI_SlaveInitializeDriver(&slave, &TWI_SLAVE, *slave_process);
	TWI_SlaveInitializeModule(&slave, TWI_SLAVE_ADDR,
			TWI_SLAVE_INTLVL_MED_gc);

	cpu_irq_enable();

	// Send package to slave
	twi_master_read(&TWI_MASTER, &packet);

	// Wait for slave to send packet
	do {} while (slave.result != TWIS_RESULT_OK);

	for (i = 0; i < PATTERN_TEST_LENGTH; i++) {
		test_assert_true(test, recv_pattern[i] == test_pattern[i],
				"Wrong data[%d] received, %d != %d", i,
				recv_pattern[i],
				test_pattern[i]);
	}
}

//@}

/**
 * \brief Run TWI unit tests
 *
 * Initializes the clock system, board and serial output, then sets up the
 * TWI unit test suite and runs it.
 */
int main(void)
{
	const usart_serial_options_t usart_serial_options = {
		.baudrate   = CONF_TEST_BAUDRATE,
		.charlength = CONF_TEST_CHARLENGTH,
		.paritytype = CONF_TEST_PARITY,
		.stopbits   = CONF_TEST_STOPBITS,
	};

	sysclk_init();
	board_init();
	stdio_serial_init(CONF_TEST_USART, &usart_serial_options);

	// Use the internal pullups for SDA and SCL
	TWI_MASTER_PORT.PIN0CTRL = PORT_OPC_WIREDANDPULL_gc;
	TWI_MASTER_PORT.PIN1CTRL = PORT_OPC_WIREDANDPULL_gc;

	// Define single ended conversion test cases
	DEFINE_TEST_CASE(twi_master_send_test, NULL,
			run_twi_master_send_test, NULL,
			"Sending packet from master test");
	DEFINE_TEST_CASE(twi_slave_recv_test, NULL,
			run_twi_slave_recv_test, NULL,
			"Receiving packet from master test");
	DEFINE_TEST_CASE(twi_master_recv_test, NULL,
			run_twi_master_recv_test, NULL,
			"Receiving packet from slave test");

	// Put test case addresses in an array
	DEFINE_TEST_ARRAY(twi_tests) = {
		&twi_master_send_test,
		&twi_slave_recv_test,
		&twi_master_recv_test,
	};

	// Define the test suite
	DEFINE_TEST_SUITE(twi_suite, twi_tests,
			"XMEGA TWI driver test suite");

	// Run all tests in the suite
	test_suite_run(&twi_suite);

	while (1) {
		// Intentionally left empty.
	}
}
Exemplo n.º 30
0
/** \brief TWI Master Example Main
 *
 * The master example begins by initializing required board resources.  The
 * system clock, basic GPIO pin mapping, and interrupt vectors are established.
 *
 * A memory location on a TWI slave is written with a fixed test pattern which
 * is then read back into a separate buffer.  As a basic sanity check, the
 * original write-buffer values are compared with values read from the slave to
 * a separate buffer.  An LED on the development board is illuminated when there
 * is a match between the written and read data.
 *
 * \return Nothing.
 */
int main(void)
{
	/* Initialize the common clock service, board-specific initialization,
	 * and
	 * interrupt vector support prior to using the TWI master interfaces.
	 */
	sysclk_init();

	board_init();

	/* TWI master initialization options. */
	twi_master_options_t opt = {
		.speed      = TWI_SPEED_HZ,
		.chip  = SLAVE_BUS_ADDR,
		
	};
	opt .baud_reg = TWI_CLOCK_RATE(sysclk_get_cpu_hz(), opt.speed);

	/* Enable the peripheral clock for TWI module */
	sysclk_enable_peripheral_clock(TWI_EXAMPLE);
	
	/* Initialize the TWI master driver. */
	twi_master_init(TWI_EXAMPLE,&opt);

	twi_package_t packet = {
		.addr[0]         =  slave_mem_addr[0], /* TWI slave memory
		                                         * address data */
		.addr_length  = (uint8_t)SLAVE_MEM_ADDR_LENGTH, /* TWI slave
		                                                 * memory
		                                                 * address data
		                                                 * size */
		.chip         = SLAVE_BUS_ADDR, /* TWI slave bus address */
		.buffer       = (void *)test_pattern, /* transfer data source
		                                       * buffer */
		.length       = PATTERN_TEST_LENGTH /* transfer data size
		                                     * (bytes) */
	};

	/* Perform a multi-byte write access then check the result. */

	while (twi_master_write(TWI_EXAMPLE,&packet) != TWI_SUCCESS) {
	}
	
	/* Write completion time for EEPROM */
	delay_ms(5);

	uint8_t data_received[PATTERN_TEST_LENGTH] = {0};

	twi_package_t packet_received = {
		.addr[0]         = slave_mem_addr[0], /* TWI slave memory
		                                         * address data */
		.addr_length  = (uint8_t)SLAVE_MEM_ADDR_LENGTH, /* TWI slave
		                                                 * memory
		                                                 * address data
		                                                 * size */
		.chip         = SLAVE_BUS_ADDR, /* TWI slave bus address */
		.buffer       = data_received, /* transfer data destination
		                                * buffer */
		.length       = PATTERN_TEST_LENGTH /* transfer data size
		                                     * (bytes) */
	};

	/* Perform a multi-byte read access then check the result. */
	while (twi_master_read(TWI_EXAMPLE,&packet_received) != TWI_SUCCESS) {
	}

	/* Verify that the received data matches the sent data. */
	for (int i = 0; i < PATTERN_TEST_LENGTH; i++) {
		if (data_received[i] != test_pattern[i]) {
			/* Error */

			while (1) {
			}
		}
	}

	/* test PASS */

	/* Green LED ON */
	LED_On(LED_GREEN_GPIO);

	while (1) {
	}
}