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ADXL362_lib.c
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ADXL362_lib.c
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/*
* ADXL362_lib.c
*
* Created: 24/02/2016 10:09:08
* Author: c.dicaprio
*
*/
#include <compiler.h>
#include <board.h>
#include <conf_board.h>
#include <port.h>
#include <asf.h>
#include <stdlib.h>
#include "ADXL362_lib.h"
// PA17 /CS
#define ADXL362_CS_PIN PIN_PA17
#define ADXL362_CS_ACTIVE false
#define ADXL362_CS_INACTIVE !ADXL362_CS_ACTIVE
// PA10 /INT1
#define ADXL362_INT1_PIN PIN_PA10
#define ADXL362_INT1_ACTIVE false
#define ADXL362_INT1_INACTIVE !ADXL362_INT1_ACTIVE
// PA11 /INT2
#define ADXL362_INT2_PIN PIN_PA11
#define ADXL362_INT2_ACTIVE false
#define ADXL362_INT2_INACTIVE !ADXL362_INT2_ACTIVE
#define ADXL362_WR_CMD (0x0A)
#define ADXL362_RD_CMD (0x0B)
#define ADXL362_FIFO_CMD (0x0D)
struct spi_module ADXL362_spi_master_instance;
struct spi_slave_inst ADXL362_slave;
status_code_genare_t ADSL362_spi_ret;
volatile bool ADXL362_trans_complete_spi_master = false;
int8_t selected_gRange = ADXL362_RANGE_2G;
/* Private function */
void ADXL362_configure_spi_master_callbacks( void);
void ADXL362_configure_spi_master( void);
int32_t ADXL362_Read( uint8_t reg, uint8_t*rxb, int32_t len);
int32_t ADXL362_Write( uint8_t reg, uint8_t*txb, int32_t len);
int32_t ADXL362_ReadFifo( uint8_t*rxb, int32_t len);
/* ************************************************************************ */
static void ADXL362_callback_spi_master( struct spi_module *const module)
{
ADXL362_trans_complete_spi_master = true;
}
void ADXL362_configure_spi_master_callbacks(void)
{
spi_register_callback( &ADXL362_spi_master_instance, ADXL362_callback_spi_master, SPI_CALLBACK_BUFFER_TRANSCEIVED);
spi_enable_callback( &ADXL362_spi_master_instance, SPI_CALLBACK_BUFFER_TRANSCEIVED);
}
#define ADXL362_SPI_MODULE SERCOM3
#define ADXL362_SPI_SERCOM_MUX_SETTING SPI_SIGNAL_MUX_SETTING_E
#define ADXL362_SPI_SERCOM_PINMUX_PAD0 PINMUX_PA16D_SERCOM3_PAD0
#define ADXL362_SPI_SERCOM_PINMUX_PAD1 PINMUX_UNUSED
#define ADXL362_SPI_SERCOM_PINMUX_PAD2 PINMUX_PA18D_SERCOM3_PAD2
#define ADXL362_SPI_SERCOM_PINMUX_PAD3 PINMUX_PA19D_SERCOM3_PAD3
#define ADXL362_SLAVE_SELECT_PIN ADXL362_CS_PIN // EXT2_PIN_SPI_SS_0
void ADXL362_configure_spi_master(void)
{
struct spi_config config_spi_master;
struct spi_slave_inst_config slave_dev_config;
/* Configure and initialize software device instance of peripheral slave */
spi_slave_inst_get_config_defaults( &slave_dev_config);
slave_dev_config.ss_pin = ADXL362_SLAVE_SELECT_PIN;
spi_attach_slave( &ADXL362_slave, &slave_dev_config);
/* Configure, initialize and enable SERCOM SPI module */
spi_get_config_defaults( &config_spi_master);
config_spi_master.mode_specific.master.baudrate = (1000*1000);
config_spi_master.transfer_mode = SPI_TRANSFER_MODE_0;
config_spi_master.mux_setting = ADXL362_SPI_SERCOM_MUX_SETTING;
/* Configure pad 0 for data in */
config_spi_master.pinmux_pad0 = ADXL362_SPI_SERCOM_PINMUX_PAD0; // PA16
/* Configure pad 1 as unused */
config_spi_master.pinmux_pad1 = PINMUX_UNUSED;
/* Configure pad 2 for data out */
config_spi_master.pinmux_pad2 = ADXL362_SPI_SERCOM_PINMUX_PAD2; // PA18
/* Configure pad 3 for SCK */
config_spi_master.pinmux_pad3 = ADXL362_SPI_SERCOM_PINMUX_PAD3; // PA19
spi_init( &ADXL362_spi_master_instance, ADXL362_SPI_MODULE, &config_spi_master);
spi_enable( &ADXL362_spi_master_instance);
}
int32_t ADXL362_Init( void)
{
struct port_config pin_conf;
uint8_t id;
port_get_config_defaults(&pin_conf);
/*
PIN_PA17 /CS Output
PIN_PA10 /INT1 Input
PIN_PA11 /INT2 Input
*/
/* Do not initialize the INT pins if you are configuring the External Interrupt */
#if 0
/* Set pin PIN_PA10 as inputs /INT1 */
pin_conf.direction = PORT_PIN_DIR_INPUT;
pin_conf.input_pull = PORT_PIN_PULL_UP;
port_pin_set_config(ADXL362_INT1_PIN, &pin_conf);
/* Set pin PIN_PA11 as inputs /INT2 */
pin_conf.direction = PORT_PIN_DIR_INPUT;
pin_conf.input_pull = PORT_PIN_PULL_UP;
port_pin_set_config(ADXL362_INT2_PIN, &pin_conf);
#endif
/* Configure /CS as outputs, turn active */
pin_conf.direction = PORT_PIN_DIR_OUTPUT;
port_pin_set_config(ADXL362_CS_PIN, &pin_conf);
port_pin_set_output_level(ADXL362_CS_PIN, ADXL362_CS_INACTIVE);
ADXL362_configure_spi_master();
ADXL362_configure_spi_master_callbacks();
ADXL362_SoftReset();
ADXL362_GetDeviceID( &id);
//
if ( id != ADXL362_DEVD_AD) {
return 1;
}
id=0;
ADXL362_GetMEMSID( &id); // 0x1D
id=0;
ADXL362_GetPartID( &id); // 0xF2
id=0;
ADXL362_GetRevID( &id); // 0x01
ADXL362_SetRange( ADXL362_RANGE_2G);
return 0;
}
int32_t ADXL362_SoftReset( void)
{
uint8_t id=ADXL362_RESET_KEY;
ADXL362_Write( ADXL362_REG_SOFT_RESET, &id, 1);
delay_ms(1);
return 0;
}
int32_t ADXL362_GetDeviceID( uint8_t*id)
{
ADXL362_Read( ADXL362_REG_DEVD_AD, id, 1);
return 0;
}
int32_t ADXL362_GetMEMSID( uint8_t*id)
{
ADXL362_Read( ADXL362_REG_DEVID_MST, id, 1);
return 0;
}
int32_t ADXL362_GetPartID( uint8_t*id)
{
ADXL362_Read( ADXL362_REG_PARTID, id, 1);
return 0;
}
int32_t ADXL362_GetRevID( uint8_t*id)
{
ADXL362_Read( ADXL362_REG_REVID, id, 1);
return 0;
}
int32_t ADXL362_GetStatus( uint8_t*status)
{
ADXL362_Read( ADXL362_REG_STATUS, status, 1);
return 0;
}
int32_t ADXL362_SetMeasureMode( void)
{
uint8_t buff[3];
/* Activity threshold */
//buff[0] = ADXL362_WR_CMD;
//buff[1] = ADXL362_REG_POWER_CTL;
buff[0] = 0x02;
ADXL362_Write( ADXL362_REG_POWER_CTL, buff, 1);
ADXL362_Read( ADXL362_REG_STATUS, &buff[0], 1);
ADXL362_Read( ADXL362_REG_POWER_CTL, &buff[1], 1);
return 0;
}
int32_t ADXL362_GetAccValues( float*x, float*y, float*z)
{
uint8_t rxbuff[3];
rxbuff[0] = 0x02;
ADXL362_Write( ADXL362_REG_POWER_CTL, rxbuff, 1);
ADXL362_Read( ADXL362_REG_POWER_CTL, &rxbuff[0], 1);
ADXL362_Read( ADXL362_REG_STATUS, &rxbuff[0], 1);
ADXL362_Read( ADXL362_REG_XDATA_L, &rxbuff[0], 1);
ADXL362_Read( ADXL362_REG_XDATA_H, &rxbuff[1], 1);
*x = (int16_t)(rxbuff[0]+(rxbuff[1]<<8));
*x /= 1000;
ADXL362_Read( ADXL362_REG_YDATA_L, &rxbuff[0], 1);
ADXL362_Read( ADXL362_REG_YDATA_H, &rxbuff[1], 1);
*y = (int16_t)(rxbuff[0]+(rxbuff[1]<<8));
*y /= 1000;
ADXL362_Read( ADXL362_REG_ZDATA_L, &rxbuff[0], 1);
ADXL362_Read( ADXL362_REG_ZDATA_H, &rxbuff[1], 1);
*z = (int16_t)(rxbuff[0]+(rxbuff[1]<<8));
*z /= 1000;
// *x=(float)rxbuff[0]/255;
// *y=(float)rxbuff[1]/255;
// *z=(float)rxbuff[2]/255;
return 0;
}
/**
* \brief Places the device into standby/measure mode.
*
* \param pwrMode - Power mode. Possible values:
* ADXL362_MEASURE_STANDBY - standby mode.
* ADXL362_MEASURE_ON - measure mode.
*
* \return None.
*/
void ADXL362_SetPowerMode(uint8_t pwrMode)
{
uint8_t oldPowerCtl = 0;
uint8_t newPowerCtl = 0;
ADXL362_Read( ADXL362_REG_POWER_CTL, &oldPowerCtl, 1);
newPowerCtl = oldPowerCtl & ~ADXL362_POWER_CTL_MEASURE(0x3);
newPowerCtl = newPowerCtl | (pwrMode * ADXL362_POWER_CTL_MEASURE(ADXL362_MEASURE_ON));
ADXL362_Write( ADXL362_REG_POWER_CTL, &newPowerCtl, 1);
}
/**
* \brief Selects the measurement range.
*
* \param gRange - Range option. Possible values:
* ADXL362_RANGE_2G - +-2 g
* ADXL362_RANGE_4G - +-4 g
* ADXL362_RANGE_8G - +-8 g
*
* \return None.
*/
void ADXL362_SetRange(uint8_t gRange)
{
uint8_t oldFilterCtl = 0;
uint8_t newFilterCtl = 0;
ADXL362_Read( ADXL362_REG_FILTER_CTL, &oldFilterCtl, 1);
newFilterCtl = oldFilterCtl & ~ADXL362_FILTER_CTL_RANGE(0x3);
newFilterCtl = newFilterCtl | ADXL362_FILTER_CTL_RANGE(gRange);
ADXL362_Write( ADXL362_REG_FILTER_CTL, &newFilterCtl, 1);
selected_gRange = (1 << gRange) * 2;
}
/**
* \brief Selects the Output Data Rate of the device.
*
* \param outRate - Output Data Rate option. Possible values:
* ADXL362_ODR_12_5_HZ - 12.5Hz
* ADXL362_ODR_25_HZ - 25Hz
* ADXL362_ODR_50_HZ - 50Hz
* ADXL362_ODR_100_HZ - 100Hz
* ADXL362_ODR_200_HZ - 200Hz
* ADXL362_ODR_400_HZ - 400Hz
*
* \return None.
*/
void ADXL362_SetOutputRate(uint8_t outRate)
{
uint8_t oldFilterCtl = 0;
uint8_t newFilterCtl = 0;
ADXL362_Read( ADXL362_REG_FILTER_CTL, &oldFilterCtl, 1);
newFilterCtl = oldFilterCtl & ~ADXL362_FILTER_CTL_ODR(0x7);
newFilterCtl = newFilterCtl | ADXL362_FILTER_CTL_ODR(outRate);
ADXL362_Write( ADXL362_REG_FILTER_CTL, &newFilterCtl, 1);
}
/**
* \brief Reads the 3-axis raw data from the accelerometer.
*
* \param x - Stores the X-axis data(as two's complement).
* \param y - Stores the Y-axis data(as two's complement).
* \param z - Stores the Z-axis data(as two's complement).
*
* \return None.
*/
void ADXL362_GetXyz(int16_t* x, int16_t* y, int16_t* z)
{
uint8_t xyzValues[6] = {0, 0, 0, 0, 0, 0};
ADXL362_Read( ADXL362_REG_XDATA_L, xyzValues, 6);
*x = (int16_t)((xyzValues[1] << 8) + xyzValues[0]);
*y = (int16_t)((xyzValues[3] << 8) + xyzValues[2]);
*z = (int16_t)((xyzValues[5] << 8) + xyzValues[4]);
}
/**
* \brief Reads the 3-axis raw data from the accelerometer and converts it to g.
*
* \param x - Stores the X-axis data.
* \param y - Stores the Y-axis data.
* \param z - Stores the Z-axis data.
*
* \return None.
*/
void ADXL362_GetGxyz(float* x, float* y, float* z)
{
uint8_t xyzValues[6] = {0, 0, 0, 0, 0, 0};
xyzValues[0] = 0x02;
ADXL362_Write( ADXL362_REG_POWER_CTL, xyzValues, 1);
ADXL362_Read( ADXL362_REG_POWER_CTL, &xyzValues[0], 1);
ADXL362_Read( ADXL362_REG_STATUS, &xyzValues[0], 1);
#if 1
ADXL362_Read( ADXL362_REG_XDATA_L, xyzValues, 6);
*x = (int16_t)((xyzValues[1] << 8) + xyzValues[0]);
*x /= (1000 / (selected_gRange / 2));
*y = (int16_t)((xyzValues[3] << 8) + xyzValues[2]);
*y /= (1000 / (selected_gRange / 2));
*z = (int16_t)((xyzValues[5] << 8) + xyzValues[4]);
*z /= (1000 / (selected_gRange / 2));
#else
ADXL362_Read( ADXL362_REG_XDATA_L, &xyzValues[0], 1);
ADXL362_Read( ADXL362_REG_XDATA_H, &xyzValues[1], 1);
*x = (int16_t)((xyzValues[1] << 8) + xyzValues[0]);
*x /= (1000 / (selected_gRange / 2));
ADXL362_Read( ADXL362_REG_YDATA_L, &xyzValues[0], 1);
ADXL362_Read( ADXL362_REG_YDATA_L, &xyzValues[1], 1);
*y = (int16_t)((xyzValues[1] << 8) + xyzValues[0]);
*y /= (1000 / (selected_gRange / 2));
ADXL362_Read( ADXL362_REG_ZDATA_L, &xyzValues[0], 1);
ADXL362_Read( ADXL362_REG_ZDATA_L, &xyzValues[1], 1);
*z = (int16_t)((xyzValues[1] << 8) + xyzValues[0]);
*z /= (1000 / (selected_gRange / 2));
#endif
}
void ADXL362_GetGxyz2(float* x, float* y, float* z)
{
uint8_t xyzValues[6] = {0, 0, 0, 0, 0, 0};
ADXL362_Read( ADXL362_REG_XDATA_L, xyzValues, 6);
*x = (int16_t)((xyzValues[1] << 8) + xyzValues[0]);
*x /= (1000 / (selected_gRange / 2));
*y = (int16_t)((xyzValues[3] << 8) + xyzValues[2]);
*y /= (1000 / (selected_gRange / 2));
*z = (int16_t)((xyzValues[5] << 8) + xyzValues[4]);
*z /= (1000 / (selected_gRange / 2));
}
/**
* \brief Reads the temperature of the device.
*
* \return tempCelsius - The value of the temperature(degrees Celsius).
*/
float ADXL362_ReadTemperature( void)
{
uint8_t rawTempData[2] = {0, 0};
uint16_t signedTemp = 0;
float tempCelsius = 0;
ADXL362_Read(ADXL362_REG_TEMP_L, rawTempData, 2);
signedTemp = (short)(rawTempData[1] << 8) + rawTempData[0];
tempCelsius = (float)signedTemp * 0.065;
return tempCelsius;
}
/**
* \brief Configures the FIFO feature.
*
* \param mode - Mode selection.
* Example: ADXL362_FIFO_DISABLE - FIFO is disabled.
* ADXL362_FIFO_OLDEST_SAVED - Oldest saved mode.
* ADXL362_FIFO_STREAM - Stream mode.
* ADXL362_FIFO_TRIGGERED - Triggered mode.
* \param waterMarkLvl - Specifies the number of samples to store in the FIFO.
* \param enTempRead - Store Temperature Data to FIFO.
* Example: 1 - temperature data is stored in the FIFO
* together with x-, y- and x-axis data.
* 0 - temperature data is skipped.
*
* \return None.
*/
void ADXL362_FifoSetup(uint8_t mode, uint16_t waterMarkLvl, uint8_t enTempRead)
{
uint8_t writeVal = 0;
uint8_t tmp;
writeVal = ADXL362_FIFO_CTL_FIFO_MODE(mode) | (enTempRead * ADXL362_FIFO_CTL_FIFO_TEMP);
if ( waterMarkLvl > 255)
writeVal |= ADXL362_FIFO_CTL_AH;
tmp=waterMarkLvl&0xFF;
ADXL362_Write( ADXL362_REG_FIFO_CONTROL, &writeVal, 1);
ADXL362_Write( ADXL362_REG_FIFO_SAMPLES, &tmp, 1);
}
/**
* \brief Configures activity detection.
*
* \param refOrAbs - Referenced/Absolute Activity Select.
* Example: 0 - absolute mode.
* 1 - referenced mode.
* \param threshold - 11-bit unsigned value that the adxl362 samples are
* compared to.
* \param time - 8-bit value written to the activity timer register. The
* amount of time (in seconds) is: time / ODR, where ODR - is
* the output data rate.
*
* \return None.
*/
void ADXL362_SetupActivityDetection(uint8_t refOrAbs, uint16_t threshold, uint8_t time)
{
uint8_t oldActInactReg = 0;
uint8_t newActInactReg = 0;
uint8_t tmp[2];
/* INT1 mapped to activity status, active low, */
oldActInactReg=ADXL362_INTMAP1_INT_LOW | ADXL362_INTMAP1_ACT;
ADXL362_Write( ADXL362_REG_INTMAP1, &oldActInactReg, 1);
/* Configure motion threshold and activity timer. */
tmp[1] = (threshold >> 8) & 0x07;
tmp[0] = threshold & 0xFF;
ADXL362_Write( ADXL362_REG_THRESH_ACT_L, tmp, 2);
ADXL362_Write( ADXL362_REG_TIME_ACT, &time, 1);
/* Enable activity interrupt and select a referenced or absolute configuration. */
ADXL362_Read( ADXL362_REG_ACT_INACT_CTL, &oldActInactReg, 1);
newActInactReg = oldActInactReg & ~ADXL362_ACT_INACT_CTL_ACT_REF;
newActInactReg |= ADXL362_ACT_INACT_CTL_ACT_EN | (refOrAbs * ADXL362_ACT_INACT_CTL_ACT_REF);
ADXL362_Write( ADXL362_REG_ACT_INACT_CTL, &newActInactReg, 1);
}
/**
* \brief Configures inactivity detection.
*
* \param refOrAbs - Referenced/Absolute Inactivity Select.
* Example: 0 - absolute mode.
* 1 - referenced mode.
* \param threshold - 11-bit unsigned value that the adxl362 samples are
* compared to.
* \param time - 16-bit value written to the inactivity timer register. The
* amount of time (in seconds) is: time / ODR, where ODR - is
* the output data rate.
*
* \return None.
*/
void ADXL362_SetupInactivityDetection(uint8_t refOrAbs, uint16_t threshold, uint16_t time)
{
uint8_t oldActInactReg = 0;
uint8_t newActInactReg = 0;
uint8_t tmp[2];
/* INT2 mapped to activity status, active low, */
oldActInactReg=ADXL362_INTMAP2_INT_LOW | ADXL362_INTMAP2_INACT;
ADXL362_Write( ADXL362_REG_INTMAP2, &oldActInactReg, 1);
/* Configure motion threshold and inactivity timer. */
tmp[1] = (threshold >> 8) & 0x07;
tmp[0] = threshold & 0xFF;
ADXL362_Write( ADXL362_REG_THRESH_INACT_L, tmp, 2);
tmp[1] = (time >> 8);
tmp[0] = time & 0xFF;
ADXL362_Write( ADXL362_REG_TIME_INACT_L, tmp, 2);
/* Enable inactivity interrupt and select a referenced or absolute configuration. */
ADXL362_Read( ADXL362_REG_ACT_INACT_CTL, &oldActInactReg, 1);
newActInactReg = oldActInactReg & ~ADXL362_ACT_INACT_CTL_INACT_REF;
newActInactReg |= ADXL362_ACT_INACT_CTL_INACT_EN | (refOrAbs * ADXL362_ACT_INACT_CTL_INACT_REF);
ADXL362_Write( ADXL362_REG_ACT_INACT_CTL, &newActInactReg, 1);
}
void ADXL361_GetActivityStatusInterruptMode( void)
{
uint8_t regVal;
ADXL362_SetPowerMode( 0);
ADXL362_SetOutputRate( ADXL362_ODR_100_HZ);
regVal = ADXL362_ACT_INACT_CTL_LINKLOOP(ADXL362_MODE_LINK);
ADXL362_Write( ADXL362_REG_ACT_INACT_CTL, ®Val, 1);
ADXL362_SetupActivityDetection(1, 60, 4);
ADXL362_SetupInactivityDetection(1, 700, 250);
ADXL362_SetPowerMode(1);
/*!< Clear ACT and INACT bits by reading the Status Register. */
ADXL362_Read( ADXL362_REG_STATUS, ®Val, 1);
}
void ADXL361_GetActivityStatusPollingMode( void)
{
uint8_t regVal;
uint8_t detections = 0;
ADXL362_SetPowerMode( 0);
ADXL362_SetOutputRate( ADXL362_ODR_100_HZ);
regVal = ADXL362_ACT_INACT_CTL_LINKLOOP(ADXL362_MODE_LINK);
ADXL362_Write( ADXL362_REG_ACT_INACT_CTL, ®Val, 1);
ADXL362_SetupActivityDetection(1, 60, 4);
ADXL362_SetupInactivityDetection(1, 700, 250);
ADXL362_SetPowerMode(1);
/*!< Clear ACT and INACT bits by reading the Status Register. */
ADXL362_Read( ADXL362_REG_STATUS, ®Val, 1);
/*!< Exit polling after 5 detections. */
detections = 25;
while(detections)
{
do /*!< Wait for the detection of an activity or inactivity. */
{
ADXL362_Read( ADXL362_REG_STATUS, ®Val, 1);
}while(!(regVal & ADXL362_STATUS_ACT) && !(regVal & ADXL362_STATUS_INACT));
detections--;
if(regVal & ADXL362_STATUS_ACT)
{
printf("Activity\r\n");
}
if(regVal & ADXL362_STATUS_INACT)
{
printf("Inactivity\r\n");
}
}
printf("Finished activity polling.\r\n");
}
void ADXL361_GetActivityStatusInterruptFifoMode( void)
{
uint8_t regVal;
ADXL362_SetPowerMode( 0);
ADXL362_SetOutputRate( ADXL362_ODR_100_HZ);
#if 0
/* Set FIFO samples and FIFO Triggered mode */
regVal = 128;
ADXL362_Write( ADXL362_REG_FIFO_SAMPLES, ®Val, 1);
regVal = ADXL362_FIFO_CTL_FIFO_MODE(ADXL362_FIFO_TRIGGERED);
ADXL362_Write( ADXL362_REG_FIFO_CONTROL, ®Val, 1);
#endif
ADXL362_FifoSetup( ADXL362_FIFO_TRIGGERED, 510, 0);
regVal = ADXL362_ACT_INACT_CTL_LINKLOOP(ADXL362_MODE_LINK);
ADXL362_Write( ADXL362_REG_ACT_INACT_CTL, ®Val, 1);
ADXL362_SetupActivityDetection(1, 60, 1 /*4*/);
ADXL362_SetupInactivityDetection(1, 700, 1 /*250*/);
ADXL362_SetPowerMode(1);
/*!< Clear ACT and INACT bits by reading the Status Register. */
ADXL362_Read( ADXL362_REG_STATUS, ®Val, 1);
}
/**
* @brief Riceve l'array in uscita dalla FIFO e ritorna i valori di X, Y e Z.
*
* @param b puntatore all'array dalla FIFO
* @param x puntatore all'array per i valori X
* @param y puntatore all'array per i valori Y
* @param z puntatore all'array per i valori Z
* @param len numero di triplette X, Y e Z
*
* Formato dati dalla FIFO:
* 11
* |GG|SS|109876543210|
* GG
* 00 X sample
* 01 Y sample
* 10 Z sample
* SS Sign extension
*/
uint32_t ADXL362_FifoBufferToXYZ( uint8_t*b, int16_t*x, int16_t*y, int16_t*z, uint32_t len)
{
uint32_t i, v;
uint8_t tmp;
if ( len>512 || len==0)
return 1;
/* Allinea il primo byte al valore della X */
i=0;
while( (b[i+1] & 0xC0) != 0x00) {
i+=2;
};
/* Se è avvenuto l'allineamento, tolgo un elemento dalla conversione. */
if ( i)
len--;
v=0;
while( i<(len*2) ) {
switch( b[i+1] & 0xC0) {
case 0x00: // X sample
if ( b[i+1]&0x30) // Verifico i bit di sign e lo estendo
tmp=b[i+1] | 0xC0;
else
tmp=b[i+1] & 0x3F;
x[v] = (int16_t)((tmp<<8) | b[i]);
break;
case 0x40: // Y sample
if ( b[i+1]&0x30) // Verifico i bit di sign e lo estendo
tmp=b[i+1] | 0xC0;
else
tmp=b[i+1] & 0x3F;
y[v] = (int16_t)((tmp<<8) | b[i]);
break;
case 0x80: // Z sample
if ( b[i+1]&0x30) // Verifico i bit di sign e lo estendo
tmp=b[i+1] | 0xC0;
else
tmp=b[i+1] & 0x3F;
z[v] = (int16_t)((tmp<<8) | b[i]);
v++;
break;
}
//
i+=2;
}
//
return 0;
}
/*
* 1. Write 250 decimal (0xFA) to Register 0x20, and write 0 to Register 0x21: sets activity threshold to 250 mg.
* 2. Write 150 decimal (0x96) to Register 0x23, and write 0 to Register 0x24: sets inactivity threshold to 150 mg.
* 3. Write 30 decimal (0x1E) to Register 0x25: sets inactivity timer to 30 samples or about 5 seconds.
* 4. Write 0x3F to Register 0x27: configures motion detection in loop mode and enables referenced activity and inactivity detection.
* 5. Write 0x40 to Register 0x2B: map the AWAKE bit to INT2. The INT2 pin is tied to the gate of the switch.
* 6. Write 0x0A to Register 0x2D: begins the measurement in wake-up mode.
*/
int32_t ADXL362_MotionSwitch( int32_t ac_thre, int32_t inac_thre, int32_t inac_tmr)
{
uint8_t buff[6];
/* Activity threshold */
//buff[0] = ADXL362_WR_CMD;
//buff[1] = ADXL362_REG_THRESH_ACT_L;
buff[0] = (ac_thre & 0xFF); // lower reg
buff[1] = (ac_thre & 0x700)>>8; // 3 bits upper reg
ADXL362_Write( ADXL362_REG_THRESH_ACT_L, buff, 2);
/* Inactivity threshold and inactivity timer */
//buff[0] = ADXL362_WR_CMD;
//buff[1] = ADXL362_REG_THRESH_INACT_L;
buff[0] = (inac_thre & 0xFF); // lower reg
buff[1] = (inac_thre & 0x700)>>8; // next 3 bits upper reg
buff[2] = (inac_tmr & 0xFF); // next lower reg ADXL362_TIME_INACT_L
buff[3] = (inac_tmr & 0xFF00)>>8; // next upper reg ADXL362_TIME_INACT_H
ADXL362_Write( ADXL362_REG_THRESH_INACT_L, buff, 4);
/* Motion detection in loop */
//buff[0] = ADXL362_WR_CMD;
//buff[1] = ADXL362_REG_ACT_INACT_CTL;
buff[0] = 0x3F;
ADXL362_Write( ADXL362_REG_ACT_INACT_CTL, buff, 1);
/* Event AWAKE on INT2 */
//buff[0] = ADXL362_WR_CMD;
//buff[1] = ADXL362_REG_INTMAP2;
buff[0] = ADXL362_INTMAP2_INT_LOW | ADXL362_INTMAP2_AWAKE; // | ADXL362_INTMAP2_INACT | ADXL362_INTMAP2_ACT; // 0x40;
ADXL362_Write( ADXL362_REG_INTMAP2, buff, 1);
/* Wake up mode */
//buff[0] = ADXL362_WR_CMD;
//buff[1] = ADXL362_REG_POWER_CTL;
buff[0] = 0x0A;
ADXL362_Write( ADXL362_REG_POWER_CTL, buff, 1);
return 0;
}
/**
* \brief Reads multiple bytes from the device's FIFO buffer.
*
* \param pBuffer Stores the read bytes.
*
* \return Number of FIFO byte read.
*/
int32_t ADXL362_GetFifoValue(uint8_t* pBuffer)
{
// uint8_t buffer[512+1];
uint8_t tmp[2];
uint16_t len;
ADXL362_Read( ADXL362_REG_FIFO_ENTRIES_L, tmp, 2);
len = tmp[0]+(tmp[1]<<8);
if ( len==0)
return 0;
if ( len>512)
len=512;
ADXL362_ReadFifo( pBuffer, len);
//
// for(index = 0; index < len; index++) {
// pBuffer[index] = buffer[index + 1];
// }
return len;
}
int32_t ADXL362_Read( uint8_t reg, uint8_t*rxb, int32_t len)
{
uint8_t ptr[34];
uint8_t ptr_tx[34];
uint8_t i;
if ( len > 32)
return 1;
// buffer used to transmit CMD and Register
ptr_tx[0] = ADXL362_RD_CMD;
ptr_tx[1] = reg;
//
spi_select_slave(&ADXL362_spi_master_instance, &ADXL362_slave, true);
ADSL362_spi_ret = spi_transceive_buffer_job(&ADXL362_spi_master_instance, ptr_tx, ptr, len+2);
if ( ADSL362_spi_ret != 0) {
spi_select_slave(&ADXL362_spi_master_instance, &ADXL362_slave, false);
return ADSL362_spi_ret;
}
while (!ADXL362_trans_complete_spi_master) {
/////* Wait for write and read complete */
}
ADXL362_trans_complete_spi_master = false;
spi_select_slave(&ADXL362_spi_master_instance, &ADXL362_slave, false);
// copy the returned data to user data
// User data is after the 2 added byte.
for ( i=2; i<len+2; i++)
rxb[i-2]=ptr[i];
return len;
}
int32_t ADXL362_Write( uint8_t reg, uint8_t*txb, int32_t len)
{
uint8_t ptr_tx[4];
uint8_t ptr[4];
uint8_t i;
if ( len > 2)
return 1;
// buffer used to transmit CMD and Register
ptr_tx[0] = ADXL362_WR_CMD;
ptr_tx[1] = reg;
// copy the user data to tx buffer
// User data is after the 2 added byte.
for ( i=0; i<len; i++)
ptr_tx[i+2]=txb[i];
//
spi_select_slave(&ADXL362_spi_master_instance, &ADXL362_slave, true);
ADSL362_spi_ret = spi_transceive_buffer_job(&ADXL362_spi_master_instance, ptr_tx, ptr, len+2);
// ADSL362_spi_ret = spi_write_buffer_job(&ADXL362_spi_master_instance, ptr_tx, len+2);
//
if ( ADSL362_spi_ret != 0) {
spi_select_slave(&ADXL362_spi_master_instance, &ADXL362_slave, false);
return ADSL362_spi_ret;
}
while (!ADXL362_trans_complete_spi_master) {
/////* Wait for write and read complete */
}
ADXL362_trans_complete_spi_master = false;
spi_select_slave(&ADXL362_spi_master_instance, &ADXL362_slave, false);
return len;
}
/**
* \brief Low Level Call to Reads multiple bytes from the device's FIFO buffer.
*
* \param rxb Stores the read bytes.
* \param len buffer lenght
* \return Correct operation.
* \retval 0 Operation OK
* \retval 1 Error
*/
int32_t ADXL362_ReadFifo( uint8_t*rxb, int32_t len)
{
uint8_t ptr[1024+1];
uint8_t ptr_tx[1024+1];
uint32_t i;
if ( len > 512)
return 1;
// buffer used to transmit CMD and Register
ptr_tx[0] = ADXL362_FIFO_CMD;
//
spi_select_slave(&ADXL362_spi_master_instance, &ADXL362_slave, true);
ADSL362_spi_ret = spi_transceive_buffer_job(&ADXL362_spi_master_instance, ptr_tx, ptr, (len*2)+1);
if ( ADSL362_spi_ret != 0) {
spi_select_slave(&ADXL362_spi_master_instance, &ADXL362_slave, false);
return ADSL362_spi_ret;
}
while (!ADXL362_trans_complete_spi_master) {
/////* Wait for write and read complete */
}
ADXL362_trans_complete_spi_master = false;
spi_select_slave(&ADXL362_spi_master_instance, &ADXL362_slave, false);
// copy the returned data to user data
// User data is after the 2 added byte.
for ( i=0; i<(len*2); i++)
rxb[i]=ptr[i+1];
return 0;
}
/* */
#if 0
int32_t ADXL362_Read( uint8_t reg, uint8_t*rxb, int32_t len)
{
//uint8_t buff[2];
uint8_t*ptr;
uint8_t*ptr_tx;
uint8_t i;
// buffer used to transmit CMD and Register
ptr_tx=malloc(len+2);
if ( ptr_tx==(uint8_t*)NULL)
return 1;
ptr_tx[0] = ADXL362_RD_CMD;
ptr_tx[1] = reg;
// buffer used to receive the data from the ADXL362
// the received buffer must be 2 byte more long. User len plus CMD and register byte.
ptr=malloc(len+2);
if ( ptr==(uint8_t*)NULL) {
free( ptr_tx);
return 1;
}
spi_select_slave(&ADXL362_spi_master_instance, &ADXL362_slave, true);
ADSL362_spi_ret = spi_transceive_buffer_job(&ADXL362_spi_master_instance, ptr_tx, ptr, len+2);
if ( ADSL362_spi_ret != 0) {
spi_select_slave(&ADXL362_spi_master_instance, &ADXL362_slave, false);
free( ptr);
free( ptr_tx);
return ADSL362_spi_ret;
}
while (!ADXL362_trans_complete_spi_master) {
/////* Wait for write and read complete */
}
ADXL362_trans_complete_spi_master = false;
spi_select_slave(&ADXL362_spi_master_instance, &ADXL362_slave, false);
// copy the returned data to user data
// User data is after the 2 added byte.
for ( i=2; i<len+2; i++)
rxb[i-2]=ptr[i];
free(ptr);
free(ptr_tx);
return len;
}
int32_t ADXL362_Write( uint8_t reg, uint8_t*txb, int32_t len)
{
//uint8_t buff[2];
uint8_t*ptr;
uint8_t*ptr_tx;
uint8_t i;
// buffer used to transmit CMD and Register
ptr_tx=malloc(len+2);
if ( ptr_tx==(uint8_t*)NULL)
return 1;
ptr_tx[0] = ADXL362_WR_CMD;
ptr_tx[1] = reg;
// copy the user data to tx buffer
// User data is after the 2 added byte.
for ( i=0; i<len; i++)
ptr_tx[i+2]=txb[i];
// dummy buffer used to receive the data from the ADXL362
// the received buffer must be 2 byte more long. User len plus CMD and register byte.
ptr=malloc(len+2);
if ( ptr==(uint8_t*)NULL)
return 1;
spi_select_slave(&ADXL362_spi_master_instance, &ADXL362_slave, true);
ADSL362_spi_ret = spi_transceive_buffer_job(&ADXL362_spi_master_instance, ptr_tx, ptr, len+2);
//ADSL362_spi_ret = spi_write_buffer_job(&ADXL362_spi_master_instance, txb, len);
//
if ( ADSL362_spi_ret != 0) {
spi_select_slave(&ADXL362_spi_master_instance, &ADXL362_slave, false);
free( ptr);
return ADSL362_spi_ret;
}
while (!ADXL362_trans_complete_spi_master) {
/////* Wait for write and read complete */
}
ADXL362_trans_complete_spi_master = false;
spi_select_slave(&ADXL362_spi_master_instance, &ADXL362_slave, false);
free( ptr);
return len;
}
#endif