uint8_t cc1101_t::ReadFIFO(void *Ptr, int8_t *PRssi) {
uint8_t b, *p = (uint8_t*)Ptr;
// Check if received successfully
b = ReadRegister(CC_PKTSTATUS);
// Uart.Printf("St: %X ", b);
if(b & 0x80) { // CRC OK
// Read FIFO
CsLo(); // Start transmission
if(BusyWait() != OK) { // Wait for chip to become ready
CsHi();
return FAILURE;
}
ISpi.ReadWriteByte(CC_FIFO|CC_READ_FLAG|CC_BURST_FLAG); // Address with read & burst flags
for(uint8_t i=0; i<IPktSz; i++) { // Read bytes
b = ISpi.ReadWriteByte(0);
*p++ = b;
// Uart.Printf(" %X", b);
}
// Receive two additional info bytes
b = ISpi.ReadWriteByte(0); // RSSI
ISpi.ReadWriteByte(0); // LQI
CsHi(); // End transmission
if(PRssi != nullptr) *PRssi = RSSI_dBm(b);
return OK;
}
else return FAILURE;
}
void cc1101_t::WriteStrobe (uint8_t AStrobe){
CsLo(); // Start transmission
BusyWait(); // Wait for chip to become ready
IState = ReadWriteByte(AStrobe); // Write strobe
CsHi(); // End transmission
IState &= 0b01110000; // Mask needed bits
}
void cc1101_t::WriteRegister (uint8_t ARegAddr, uint8_t AData){
CsLo(); // Start transmission
BusyWait(); // Wait for chip to become ready
ReadWriteByte(ARegAddr); // Transmit header byte
ReadWriteByte(AData); // Write data
CsHi(); // End transmission
}
// =========================== Registers & Strobes =============================
uint8_t cc1101_t::ReadRegister (uint8_t ARegAddr) {
CsLo(); // Start transmission
BusyWait(); // Wait for chip to become ready
ISpi.ReadWriteByte(ARegAddr | CC_READ_FLAG); // Transmit header byte
uint8_t FReply = ISpi.ReadWriteByte(0); // Read reply
CsHi(); // End transmission
return FReply;
}
void Adc_t::StartDMAMeasure() {
(void)SPI_ADC->DR; // Clear input register
dmaStreamSetMemory0(DMA_ADC, &IRslt);
dmaStreamSetTransactionSize(DMA_ADC, 3);
dmaStreamSetMode(DMA_ADC, ADC_DMA_MODE);
dmaStreamEnable(DMA_ADC);
CsLo();
ISpi.Enable();
}
uint8_t cc1101_t::WriteStrobe (uint8_t AStrobe) {
CsLo(); // Start transmission
if(BusyWait() != OK) { // Wait for chip to become ready
CsHi();
return FAILURE;
}
IState = ISpi.ReadWriteByte(AStrobe); // Write strobe
CsHi(); // End transmission
IState &= 0b01110000; // Mask needed bits
return OK;
}
uint8_t cc1101_t::WriteRegister (uint8_t ARegAddr, uint8_t AData) {
CsLo(); // Start transmission
if(BusyWait() != OK) { // Wait for chip to become ready
CsHi();
return FAILURE;
}
ISpi.ReadWriteByte(ARegAddr); // Transmit header byte
ISpi.ReadWriteByte(AData); // Write data
CsHi(); // End transmission
return OK;
}
void cc1101_t::WriteTX(uint8_t* Ptr, uint8_t Length) {
CsLo(); // Start transmission
BusyWait(); // Wait for chip to become ready
ISpi.ReadWriteByte(CC_FIFO|CC_WRITE_FLAG|CC_BURST_FLAG); // Address with write & burst flags
uint8_t b;
//Uart.Printf("TX: ");
for(uint8_t i=0; i<Length; i++) {
b = *Ptr++;
ISpi.ReadWriteByte(b); // Write bytes
// Uart.Printf("%X ", b);
}
CsHi(); // End transmission
//Uart.Printf("\r");
}
uint16_t Adc_t::Measure() {
ISpi.Enable();
CsLo();
uint8_t b;
uint32_t r = 0;
b = ISpi.ReadWriteByte(0);
r = b;
b = ISpi.ReadWriteByte(0);
r = (r << 8) | b;
b = ISpi.ReadWriteByte(0);
r = (r << 8) | b;
CsHi();
ISpi.Disable();
r >>= 2;
r &= 0xFFFF;
return r;
}
uint8_t cc1101_t::ReadFifo(uint8_t *PBuf, uint8_t Length) {
uint8_t b, Cnt=0;
Cnt = ReadRegister(CC_RXBYTES);
b = ReadRegister(CC_PKTSTATUS);
//Uart.Printf("Sz: %X; st: %X\r", Cnt, b);
if(b & 0x80) {
CsLo(); // Start transmission
//BusyWait(); // Wait for chip to become ready
ReadWriteByte(CC_FIFO|CC_READ_FLAG|CC_BURST_FLAG); // Address with read & burst flags
for (uint8_t i=0; i<Length; i++) { // Read bytes
b = ReadWriteByte(0);
*PBuf++ = b;
//Uart.Printf(" %X", b);
}
CsHi(); // End transmission
}
else Cnt = 0; // Signal that nothing was read
FlushRxFIFO();
return 1;
}
uint8_t cc1101_t::ReadFIFO(rPkt_t *pPkt) {
uint8_t b, *p = (uint8_t*)pPkt;
// Check if received successfully
b = ReadRegister(CC_PKTSTATUS);
// Uart.Printf("St: %X ", b);
if(b & 0x80) { // CRC OK
// Read FIFO
CsLo(); // Start transmission
BusyWait(); // Wait for chip to become ready
ReadWriteByte(CC_FIFO|CC_READ_FLAG|CC_BURST_FLAG); // Address with read & burst flags
for(uint8_t i=0; i<RPKT_LEN; i++) { // Read bytes
b = ReadWriteByte(0);
*p++ = b;
// Uart.Printf(" %X", b);
}
// Receive two additional info bytes
b = ReadWriteByte(0); // RSSI
ReadWriteByte(0); // LQI
CsHi(); // End transmission
pPkt->RSSI = RSSI_dBm(b);
return OK;
}
else return FAILURE;
}
