/**
@brief SPI initialization
@return none
**/
void SPI_Init(void)
{
DioPul(pADI_GP0, 0xf8); /* Disable the internal pull ups on P0 */
DioCfg(pADI_GP0, 0x0015); /* Configure P0[2:0] for SPI1 */
DioPulPin(AD7798_CS_PORT, AD7798_CS_PIN_NUMBER, 0); // Disable the internal pull up on AD7798 CS pin
DioOenPin(AD7798_CS_PORT, AD7798_CS_PIN_NUMBER, 1); // Set CS pin for AD7798 as output
DioSet(AD7798_CS_PORT, AD7798_CS_PIN);
DioPulPin(ADT7310_CS_PORT, ADT7310_CS_PIN_NUMBER, 0); // Disable the internal pull up on ADT7310 CS pin
DioOenPin(ADT7310_CS_PORT, ADT7310_CS_PIN_NUMBER, 1); // Set CS pin for ADT7310 as output
DioSet(ADT7310_CS_PORT, ADT7310_CS_PIN);
DioPulPin(AD5270_CS_PORT, AD5270_CS_PIN_NUMBER, 0); // Disable the internal pull up on ADT7310 CS pin
DioOenPin(AD5270_CS_PORT, AD5270_CS_PIN_NUMBER, 1); // Set CS pin for ADT7310 as output
DioSet(AD5270_CS_PORT, AD5270_CS_PIN);
SpiBaud(pADI_SPI1, 9, SPIDIV_BCRST_DIS); /* Set the SPI1 clock rate in Master mode to x kHz. */
/* SPI configuration*/
SpiCfg(pADI_SPI1, SPICON_MOD_TX4RX4, SPICON_MASEN_EN, SPICON_CON_EN | SPICON_SOEN_EN |
SPICON_RXOF_EN | SPICON_ZEN_EN | SPICON_TIM_TXWR | SPICON_CPOL_HIGH |
SPICON_CPHA_SAMPLETRAILING | SPICON_ENABLE_EN);
}
/***************************************************************************
* @brief Writes data to SPI.
*
* @param data - Write data buffer:
* - first byte is the chip select number;
* - from the second byte onwards are located data bytes to write.
* @param bytesNumber - Number of bytes to write.
*
* @return Number of written bytes.
*******************************************************************************/
void SPI_Write(unsigned char* data, unsigned char bytesNumber, enChannels ch)
{
uint8_t byte = 0;
uint16_t ui16fifo_status = (bytesNumber << 8); /* Set FIFO status correct value */
if(convFlag == 0){
switch(ch){
case AD7798:
DioClr(AD7798_CS_PORT, AD7798_CS_PIN);
break;
case ADT7310:
DioClr(ADT7310_CS_PORT, ADT7310_CS_PIN);
break;
default:
{
if(daisyCh == 0)
DioClr(AD5270_CS_PORT, AD5270_CS_PIN);
}
break;
}
}
/* Flush Tx and Rx FIFOs */
SpiFifoFlush(pADI_SPI1, SPICON_TFLUSH_EN, SPICON_RFLUSH_EN);
for(byte = 0;byte < bytesNumber;byte++)
{
SpiTx(pADI_SPI1, data[byte]);
}
/* Wait until x bytes are received */
while ((SpiSta(pADI_SPI1) & ui16fifo_status) != ui16fifo_status);
if(convFlag == 0){
switch(ch){
case AD7798:
DioSet(AD7798_CS_PORT, AD7798_CS_PIN);
break;
case ADT7310:
DioSet(ADT7310_CS_PORT, ADT7310_CS_PIN);
break;
default:
{
if(daisyCh == 0)
DioSet(AD5270_CS_PORT, AD5270_CS_PIN);
}
break;
}
}
}
/**
@brief Port test function
@return none
**/
void Test_Port(void)
{
if (GPIO_PINS == GPIO0) { /* Check if Port 0 is tested as GPIO */
DioSet(pADI_GP0, 0xFF); /* Set Port 0 outputs to High */
} else if (GPIO_PINS == GPIO1) { /* Check if Port 1 is tested as GPIO */
DioSet(pADI_GP1, 0xFF); /* Set Port 1 outputs to High */
} else if (GPIO_PINS == GPIO2) { /* Check if Port 2 is tested as GPIO */
DioSet(pADI_GP2, 0x07); /* Set Port 2 outputs to High */
}
}
int main(void)
{
/* Watchdog timer disabled */
WDTCTL = WDTPW + WDTHOLD;
BspInit();
DioInit();
DioSet(BUTTON0);
UartInit(9600, UartCallback);
LedInit();
ButtonInit();
ButtonSetup(0, Button0Cbf, 20);
LedOn(0);
SchedulerInit(100, 1, 2); // 1ms tick, 1 timed task, 2 loop task
SetSchedulerTimedTask(LedRedFlash, 0, 500, 0); // schedule timed_task[0] as led_red_flash, set off every 500ms
SetSchedulerLoopTask(ButtonLoop, 0); // schedule loop_task[0] as button_loop
SetSchedulerLoopTask(UartManage, 1); // schedule loop_task[1] as uart_loop
__eint();
SchedulerRun();
while(1)
{
}
}
/**
@brief Initialization
@return none
**/
void AD7091R_Init(void)
{
SPI_Init(); /* SPI initialization */
DioPulPin(CONVST_PORT, CONVST_PIN_NUMBER, 0); /* Disable the internal pull up on CONVST pin */
DioOenPin(CONVST_PORT, CONVST_PIN_NUMBER, 1); /* Set CONVST pin as output */
DioSet(CONVST_PORT, CONVST_PIN); /* Set CONVST pin as high */
AD7091R_SoftwareReset(); /* Perform an AD7091R software reset required at initialization */
u8StartCounter = 0; /* Reset start counter */
}
void SPIClass::Write(unsigned char slaveDeviceId, unsigned char* data, unsigned char bytesNumber)
{
uint8_t byte = 0, reset = 0;
uint16_t ui16fifo_status;
if(bytesNumber == 8){
bytesNumber = 4;
reset = 1;
}
ui16fifo_status = (bytesNumber << 8); /* Set FIFO status correct value */
if(slaveDeviceId == 0)
DioClr(CS_PORT, CS_PIN);
/* Flush Tx and Rx FIFOs */
SpiFifoFlush(pADI_SPI1, SPICON_TFLUSH_EN, SPICON_RFLUSH_EN);
for(byte = 0;byte < bytesNumber;byte++)
{
SpiTx(pADI_SPI1, data[byte]);
}
/* Wait until x bytes are received */
while ((SpiSta(pADI_SPI1) & ui16fifo_status) != ui16fifo_status);
if(reset == 1){
SpiFifoFlush(pADI_SPI1, SPICON_TFLUSH_EN, SPICON_RFLUSH_EN);
for(byte = 0;byte < bytesNumber;byte++)
{
SpiTx(pADI_SPI1, data[byte]);
}
while ((SpiSta(pADI_SPI1) & ui16fifo_status) != ui16fifo_status);
}
if(slaveDeviceId == 0)
DioSet(CS_PORT, CS_PIN);
}
/**
@brief Calibrate ADC input channel
@param ui8channel - input channel
@param mode - calibration mode: CAL_INT_ZERO_MODE, CAL_INT_FULL_MODE, CAL_SYS_ZERO_MODE, CAL_SYS_FULL_MODE
@return none
**/
void AD7793_Calibrate(uint8_t ui8channel, enMode mode)
{
uint32_t ui32reg_value, back_up;
AD7793_SelectChannel(ui8channel); /* Select channel */
ui32reg_value = back_up = AD7793_ReadRegister(AD7793_REG_MODE); /* Read MODE register */
ui32reg_value &= AD7793_MODE_MSK;
ui32reg_value |= (uint32_t)(mode << 13); /* Set mode */
DioClr(CS_PORT, CS_PIN);
AD7793_WriteRegister(AD7793_REG_MODE, ui32reg_value); /* Write MODE register */
while ((AD7793_ReadRegister(AD7793_REG_STAT)& RDY_BIT) != RDY_BIT); /* Wait until RDY bit from STATUS register is high */
DioSet(CS_PORT, CS_PIN);
}
void SPIClass::Init()
{
DioPulPin(pADI_GP0, PIN0, 0);
DioCfgPin(pADI_GP0, PIN0, 1); //MISO
DioPulPin(pADI_GP0, PIN1, 0);
DioCfgPin(pADI_GP0, PIN1, 1); //SCLK
DioPulPin(pADI_GP0, PIN2, 0);
DioCfgPin(pADI_GP0, PIN2, 1); //MOSI
DioPulPin(CS_PORT, CS_PIN_NUMBER, 0); /* Disable the internal pull up on AD7798 CS pin */
DioOenPin(CS_PORT, CS_PIN_NUMBER, 1); /* Set CS pin for AD7798 as output */
DioSet(CS_PORT, CS_PIN);
SpiBaud(pADI_SPI1, 9, SPIDIV_BCRST_DIS); /* Set the SPI1 clock rate in Master mode to x kHz. */
/* SPI configuration*/
SpiCfg(pADI_SPI1, SPICON_MOD_TX4RX4, SPICON_MASEN_EN, SPICON_CON_EN | SPICON_SOEN_EN |
SPICON_RXOF_EN | SPICON_ZEN_EN | SPICON_TIM_TXWR | SPICON_CPOL_HIGH |
SPICON_CPHA_SAMPLETRAILING | SPICON_ENABLE_EN);
}
/***************************************************************************//**
* @brief Reads data from SPI.
*
* @param data - As an input parameter, data represents the write buffer:
* - first byte is the chip select number;
* - from the second byte onwards are located data bytes to write.
* As an output parameter, data represents the read buffer:
* - from the first byte onwards are located the read data bytes.
* @param bytesNumber - Number of bytes to write.
*
* @return Number of written bytes.
*******************************************************************************/
void SPIClass::Read(unsigned char slaveDeviceId, unsigned char* data, unsigned char bytesNumber)
{
unsigned char writeData[4] = {0, 0, 0, 0};
unsigned char byte = 0;
uint16_t ui16fifo_status;
ui16fifo_status = ((bytesNumber) << 8); /* Set FIFO status correct value */
for(byte = 0;byte < bytesNumber;byte++)
{
if(byte == 0)
writeData[byte] = data[byte];
else
writeData[byte] = 0xAA; /* dummy value */
}
if(slaveDeviceId == 0)
DioClr(CS_PORT, CS_PIN);
SpiFifoFlush(pADI_SPI1, SPICON_TFLUSH_EN, SPICON_RFLUSH_EN);
for(byte = 0;byte < bytesNumber;byte++)
{
SpiTx(pADI_SPI1, writeData[byte]);
}
/* Wait until x bytes are received */
while ((SpiSta(pADI_SPI1) & ui16fifo_status) != ui16fifo_status);
for(byte = 0;byte < bytesNumber;byte++)
{
data[byte] = SpiRx(pADI_SPI1);
}
if(slaveDeviceId == 0)
DioSet(CS_PORT, CS_PIN);
}
/**
@brief Read ADC conversion results
@param mode - conversion mode: SINGLE_CONV or CONTINUOUS_CONV
@param ui8channel - ADC channel to scan
@return uint32_t - conversion result
**/
uint32_t AD7793_Scan(enMode mode, uint8_t ui8channel)
{
static uint32_t ui32result, ui32reg_value;
uint8_t ui8reg_adrr = (AD7793_COMM_READ | AD7793_COMM_ADR(AD7793_REG_DATA)); /* Set value (read command + DATA register address) to write in COMM register */
AD7793_SelectChannel(ui8channel); /* Select channel to scan */
if(mode == SINGLE_CONV) { /* Check if single conversion mode is wanted */
ui32reg_value = AD7793_ReadRegister(AD7793_REG_MODE);
ui32reg_value &= AD7793_MODE_MSK;
ui32reg_value |= (uint32_t)(mode << 13); /* Set single mode operation */
DioClr(CS_PORT, CS_PIN);
AD7793_WriteRegister(AD7793_REG_MODE, ui32reg_value);
}
if(mode == CONTINUOUS_CONV) {
DioClr(CS_PORT, CS_PIN);
}
while ((AD7793_ReadRegister(AD7793_REG_STAT)& RDY_BIT) != RDY_BIT);
SPI_Write(0xAA, 0xAAAA, 2);
ui32result = SPI_Read(ui8reg_adrr, reg_size[AD7793_REG_DATA]);
DioSet(CS_PORT, CS_PIN);
return ui32result;
}
/***************************************************************************//**
* @brief Reads data from SPI.
*
* @param data - As an input parameter, data represents the write buffer:
* - first byte is the chip select number;
* - from the second byte onwards are located data bytes to write.
* As an output parameter, data represents the read buffer:
* - from the first byte onwards are located the read data bytes.
* @param bytesNumber - Number of bytes to write.
*
* @return Number of written bytes.
*******************************************************************************/
void SPI_Read(unsigned char* data, unsigned char bytesNumber, enChannels ch)
{
unsigned char writeData[4] = {0, 0, 0, 0};
unsigned char byte = 0;
uint16_t ui16fifo_status = ((bytesNumber + 1) << 8); /* Set FIFO status correct value */
for(byte = 0;byte <= bytesNumber;byte++)
{
if(byte == 0)
writeData[byte] = data[byte];
else
writeData[byte] = 0xAA; /* dummy value */
}
if(convFlag == 0){
switch(ch){
case AD7798:
DioClr(AD7798_CS_PORT, AD7798_CS_PIN);
break;
case ADT7310:
DioClr(ADT7310_CS_PORT, ADT7310_CS_PIN);
break;
default:
DioClr(AD5270_CS_PORT, AD5270_CS_PIN);
break;
}
}
SpiFifoFlush(pADI_SPI1, SPICON_TFLUSH_EN, SPICON_RFLUSH_EN);
for(byte = 0;byte <= bytesNumber;byte++)
{
SpiTx(pADI_SPI1, writeData[byte]);
}
/* Wait until x bytes are received */
while ((SpiSta(pADI_SPI1) & ui16fifo_status) != ui16fifo_status);
data[0] = writeData[0] = SpiRx(pADI_SPI1); /* Dummy read, not needed value */
for(byte = 0;byte < bytesNumber;byte++)
{
data[byte] = writeData[byte] = SpiRx(pADI_SPI1);
}
if(convFlag == 0){
switch(ch){
case AD7798:
DioSet(AD7798_CS_PORT, AD7798_CS_PIN);
break;
case ADT7310:
DioSet(ADT7310_CS_PORT, ADT7310_CS_PIN);
break;
default:
DioSet(AD5270_CS_PORT, AD5270_CS_PIN);
break;
}
}
}
