/**
* Put the ADXL362 into a lower power standby state without gating power
* @Note Accel need to stay
* @todo Implement this function
*/
void ACCEL_standby() {
lowPowerSleep(LPM_5ms);
SPI_transaction(gpRxBuf, (uint8_t*)&ADXL_RESET, sizeof(ADXL_RESET),ACCEL_SPI);
lowPowerSleep(LPM_1ms);
SPI_transaction(gpRxBuf, (uint8_t*)&ADXL_CONFIG_STBY, sizeof(ADXL_CONFIG_STBY),ACCEL_SPI);
}
/**
* @brief: Read one byte from EPD register
*/
uint8_t SPI_READ(const uint8_t Register) {
uint8_t Index[2];
uint8_t Data[2] = {0x73,0x00};
unsigned char RxData[2] = {0x00,0x00};
delay_us(T_10us);
Index[0]=0x70;
Index[1]=Register;
SPI_transaction(RxData,Index,2,EPD_SPI);
delay_us(T_10us);
SPI_transaction(RxData,Data,2,EPD_SPI);
return RxData[1];
}
/**
* Turn on and start up the ADXL362 accelerometer. This leaves the ADXL running.
*/
void initACCEL() {
/*sleep 5msto allow Accel to startup*/
lowPowerSleep(LPM_5ms);
SPI_transaction(gpRxBuf, (uint8_t*)&ADXL_RESET, sizeof(ADXL_RESET),ACCEL_SPI);
lowPowerSleep(LPM_1ms);
SPI_transaction(gpRxBuf, (uint8_t*)&ADXL_CONFIG_DETECT, sizeof(ADXL_CONFIG_DETECT),ACCEL_SPI);
//lowPowerSleep(LPM_1ms);
//SPI_transaction(gpRxBuf, (uint8_t*)&ADXL_CONFIG_READ, sizeof(ADXL_CONFIG_READ),ACCEL_SPI);
//lowPowerSleep(LPM_1ms);
}
/**
* @brief: send one byte EPD command, include one byte register_index and one byte data
*/
void epd_spi_send_byte (const uint8_t register_index, const uint8_t register_data) {
uint8_t Index[2];
uint8_t Data[2];
const unsigned char RxData[2] = {0x00,0x00};
delay_us(T_10us);
Index[0]= 0x70;
Index[1]= register_index;
Data[0]= 0x72;
Data[1]= register_data;
SPI_transaction((uint8_t*)RxData,Index,2,EPD_SPI);
delay_us(T_10us);
SPI_transaction((uint8_t*)RxData,Data,2,EPD_SPI);
}
/**
* Grab configure from the ADXL362 accelerometer
*/
BOOL ACCEL_readConfig() {
//ACCEL_Enable();
//SPI_transaction(gpRxBuf, (uint8_t*)&ADXL_READ_XYZ_STATUS_8BIT, sizeof(ADXL_READ_XYZ_STATUS_8BIT));
SPI_transaction(gpRxBuf, (uint8_t*)&ADXL_CONFIG_READ, sizeof(ADXL_CONFIG_READ),ACCEL_SPI);
//SPI_releasePort();
return SUCCESS;
}
/**
* @brief: send more than two bytes to EPD register
*/
void epd_spi_send (uint8_t register_index, uint8_t *dataPtr,
uint8_t length) {
unsigned char Index[2];
unsigned char RxData[2] = {0x00,0x00};
delay_us(T_10us);
Index[0]= 0x70;
Index[1]=register_index;
SPI_transaction(RxData,Index,2,EPD_SPI);
delay_us(T_10us);
//transmit data
//while(SPI_acquirePort());
spiSM.target = EPD_LONG_DATA;
//spiSM.uiCurRx = 0;
spiSM.uiCurTx = 0;
spiSM.uiBytesToSend = length+1;
spiSM.pcRxBuffer = (void *)0;
spiSM.pcTxBuffer = dataPtr-1;//Tricks:we have to send out the header
UCB1IE |= UCRXIE;
EPD_SPI_ON();
// Start transmission
UCB1TXBUF = 0x72;
// Sleep until receive occurs
__bis_SR_register(LPM4_bits | GIE);
EPD_SPI_OFF();
delay_us(T_10us);
//SPI_releasePort();
}
/**
* Grab one sample from the ADXL362 accelerometer
*/
BOOL ACCEL_singleSample(uint8_t* dataPack) {
//ACCEL_Enable();
//while(SPI_acquirePort());
SPI_transaction(gpRxBuf, (uint8_t*)&ADXL_READ_XYZ_STATUS_8BIT, sizeof(ADXL_READ_XYZ_STATUS_8BIT),ACCEL_SPI);
dataPack[3] = gpRxBuf[2]; //X-axis
dataPack[4] = gpRxBuf[3]; //Y
dataPack[5] = gpRxBuf[4]; //z
dataPack[6] = gpRxBuf[5]; //This is the status data
//SPI_releasePort();
return SUCCESS;
}
BOOL ACCEL_readID(threeAxis_t* result) {
while(!SPI_acquirePort());
BITCLR(POUT_ACCEL_CS, PIN_ACCEL_CS);
SPI_transaction(gpRxBuf, (uint8_t*)ADXL_READ_DEVID, sizeof(ADXL_READ_DEVID));
BITSET(POUT_ACCEL_CS, PIN_ACCEL_CS);
SPI_releasePort();
result->x = gpRxBuf[2];
return SUCCESS;
}
/**
* Grab one sample from the ADXL362 accelerometer
*/
BOOL ACCEL_singleSample(threeAxis_t* result) {
while(!SPI_acquirePort());
BITCLR(POUT_ACCEL_CS, PIN_ACCEL_CS);
SPI_transaction(gpRxBuf, (uint8_t*)ADXL_READ_XYZ_8BIT, sizeof(ADXL_READ_XYZ_8BIT));
BITSET(POUT_ACCEL_CS, PIN_ACCEL_CS);
SPI_releasePort();
result->x = gpRxBuf[2];
result->y = gpRxBuf[3];
result->z = gpRxBuf[4];
return SUCCESS;
}
BOOL ACCEL_initialize_withoutWait() {
// TODO Figure out optimal ADXL configuration for single measurement
while(!SPI_acquirePort());
//BITSET(POUT_ACCEL_EN, PIN_ACCEL_EN);
BITSET(POUT_ACCEL_CS, PIN_ACCEL_CS);
BITCLR(POUT_ACCEL_CS, PIN_ACCEL_CS);
SPI_transaction(gpRxBuf, (uint8_t*)ADXL_CONFIG_MEAS, sizeof(ADXL_CONFIG_MEAS));
BITSET(POUT_ACCEL_CS, PIN_ACCEL_CS);
SPI_releasePort();
//Timer_LooseDelay(LP_LSDLY_200MS);// To let ADXL start measuring? How much time is actually required here, if any?
// TODO Use a pin interrupt to let us know when first measurement is ready
return SUCCESS;
}
BOOL ACCEL_range() {
// TODO Figure out optimal ADXL configuration for single measurement
while(!SPI_acquirePort());
//BITSET(POUT_ACCEL_EN, PIN_ACCEL_EN);
//BITSET(POUT_ACCEL_CS, PIN_ACCEL_CS);
//TODO find the proper length of delay
BITCLR(POUT_ACCEL_CS, PIN_ACCEL_CS);
SPI_transaction(gpRxBuf, (uint8_t*)ADXL_CONFIG_FILTER, sizeof(ADXL_CONFIG_FILTER));
BITSET(POUT_ACCEL_CS, PIN_ACCEL_CS);
SPI_releasePort();
//__delay_cycles(5000);
//Timer_LooseDelay(LP_LSDLY_200MS);// To let ADXL start measuring? How much time is actually required here, if any?
// TODO Use a pin interrupt to let us know when first measurement is ready
return SUCCESS;
}
/**
* Grab one ADXL_READ_STATUS from the ADXL362 accelerometer
*/
BOOL ACCEL_Status(uint8_t* result) {
SPI_transaction(gpRxBuf, (uint8_t*)&ADXL_READ_STATUS, sizeof(ADXL_READ_STATUS),ACCEL_SPI);
*(result) = gpRxBuf[2];
return SUCCESS;
}
static PyObject *SPIDev_transaction(SPIDev *self, PyObject *args, PyObject *kwds) {
uint8_t cs;
uint32_t n_tx_bytes, n_rx_bytes, n_tx_words, n_rx_words, i, word;
PyObject *txdata, *rxdata, *word_obj;
void *txbuf, *rxbuf;
cs = 0;
if(!PyArg_ParseTuple(args, "bO!b", &cs, &PyList_Type, &txdata, &n_rx_words)) {
return NULL;
}
if (SPIDev_activateCS(self, cs) < 0) return NULL;
n_tx_words = PyList_Size(txdata);
n_tx_bytes = (uint32_t) (((float) (self->bits_per_word * n_tx_words)) / 8.0 + 0.5);
n_rx_bytes = (uint32_t) (((float) (self->bits_per_word * n_rx_words)) / 8.0 + 0.5);
txbuf = malloc(n_tx_bytes);
rxbuf = malloc(n_rx_bytes);
for (i=0; i<n_tx_words; i++) {
word_obj = PyList_GetItem(txdata, i);
if (!PyInt_Check(word_obj)) {
PyErr_SetString(PyExc_ValueError,
"data list to transmit can only contain integers");
free(rxbuf);
free(txbuf);
return NULL;
}
word = PyInt_AsLong(word_obj);
if (word < 0) {
if (PyErr_Occurred() != NULL) {
free(rxbuf);
free(txbuf);
return NULL;
}
word = 0;
}
switch(self->bytes_per_word) {
case 1:
((uint8_t*)txbuf)[i] = (uint8_t) word;
break;
case 2:
((uint16_t*)txbuf)[i] = (uint16_t) word;
break;
case 4:
((uint32_t*)txbuf)[i] = (uint32_t) word;
break;
default:
break;
}
}
n_rx_words = SPI_transaction(self->spidev_fd[cs], txbuf, n_tx_words, rxbuf,
n_rx_words);
rxdata = PyList_New(0);
for (i=0; i<n_rx_words; i++) {
switch(self->bytes_per_word) {
case 1:
word = ((uint8_t*)rxbuf)[i];
break;
case 2:
word = ((uint16_t*)rxbuf)[i];
break;
case 4:
word = ((uint32_t*)rxbuf)[i];
break;
default:
word = 0;
break;
}
word_obj = PyInt_FromLong(word);
PyList_Append(rxdata, word_obj);
Py_DECREF(word_obj);
}
free(txbuf);
free(rxbuf);
return rxdata;
}
