void Mcp6s26SetGain(Mcp6s26Gain_t gain)
{
MCP6S26_CS_LOW
SpiTx(MCP6S26_SPI_BUS, 0x40); // M1 = 1, A0 = 0
SpiTx(MCP6S26_SPI_BUS, 1);
MCP6S26_CS_HIGH
}
void Mcp6s26SetChannel(UI08_t channel)
{
//
MCP6S26_CS_LOW
SpiTx(MCP6S26_SPI_BUS, 0x41); // M1 = 1, A0 = 1
SpiTx(MCP6S26_SPI_BUS, channel);
MCP6S26_CS_HIGH
}
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 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 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 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;
}
}
}
