452 lines
14 KiB
C++
452 lines
14 KiB
C++
/*
|
|
* MiLightRadioPL1167_LT89000.cpp
|
|
*
|
|
* Created on: 31 March 2017
|
|
* Author: WoodsterDK
|
|
*
|
|
* Very inspired by:
|
|
* https://github.com/pmoscetta/authometion-milight/tree/master/Authometion-MiLight
|
|
* https://bitbucket.org/robvanderveer/lt8900lib
|
|
*/
|
|
|
|
#include "LT8900MiLightRadio.h"
|
|
#include <SPI.h>
|
|
|
|
/**************************************************************************/
|
|
// Constructor
|
|
/**************************************************************************/
|
|
LT8900MiLightRadio::LT8900MiLightRadio(byte byCSPin, byte byResetPin, byte byPktFlag, const MiLightRadioConfig& config)
|
|
: _config(config),
|
|
_channel(0),
|
|
_currentPacketLen(0),
|
|
_currentPacketPos(0)
|
|
{
|
|
_csPin = byCSPin;
|
|
_pin_pktflag = byPktFlag;
|
|
|
|
pinMode(_pin_pktflag, INPUT);
|
|
|
|
if (byResetPin > 0) // If zero then bypass hardware reset
|
|
{
|
|
pinMode(byResetPin, OUTPUT);
|
|
digitalWrite(byResetPin, LOW);
|
|
delay(200);
|
|
digitalWrite(byResetPin, HIGH);
|
|
delay(200);
|
|
}
|
|
|
|
pinMode(_csPin, OUTPUT);
|
|
digitalWrite(_csPin, HIGH);
|
|
|
|
SPIClass spiSD(HSPI);
|
|
SPI.begin();
|
|
|
|
SPI.setDataMode(SPI_MODE1);
|
|
// The following speed settings depends upon the wiring and PCB
|
|
//SPI.setFrequency(8000000);
|
|
SPI.setFrequency(4000000);
|
|
SPI.setBitOrder(MSBFIRST);
|
|
|
|
//Initialize transceiver with correct settings
|
|
vInitRadioModule();
|
|
delay(50);
|
|
|
|
// Check if HW is connected
|
|
_bConnected = bCheckRadioConnection();
|
|
|
|
//Reset SPI MODE to default
|
|
SPI.setDataMode(SPI_MODE0);
|
|
_waiting = false;
|
|
}
|
|
|
|
|
|
|
|
|
|
/**************************************************************************/
|
|
// Checks the connection to the radio module by verifying a register setting
|
|
/**************************************************************************/
|
|
bool LT8900MiLightRadio::bCheckRadioConnection(void)
|
|
{
|
|
bool bRetValue = false;
|
|
uint16_t value_0 = uiReadRegister(0);
|
|
uint16_t value_1 = uiReadRegister(1);
|
|
|
|
if ((value_0 == 0x6fe0) && (value_1 == 0x5681))
|
|
{
|
|
#ifdef DEBUG_PRINTF
|
|
Serial.println(F("Radio module running correctly..."));
|
|
#endif
|
|
bRetValue = true;
|
|
}
|
|
else
|
|
{
|
|
#ifdef DEBUG_PRINTF
|
|
Serial.println(F("Failed initializing the radio module..."));
|
|
#endif
|
|
}
|
|
|
|
return bRetValue;
|
|
}
|
|
|
|
/**************************************************************************/
|
|
// Initialize radio module
|
|
/**************************************************************************/
|
|
void LT8900MiLightRadio::vInitRadioModule() {
|
|
bool bWriteDefaultDefault = true; // Is it okay to use the default power up values, without setting them
|
|
|
|
regWrite16(0x00, 0x6F, 0xE0, 7); // Recommended value by PMmicro
|
|
regWrite16(0x02, 0x66, 0x17, 7); // Recommended value by PMmicro
|
|
regWrite16(0x04, 0x9C, 0xC9, 7); // Recommended value by PMmicro
|
|
|
|
regWrite16(0x05, 0x66, 0x37, 7); // Recommended value by PMmicro
|
|
regWrite16(0x07, 0x00, 0x4C, 7); // PL1167's TX/RX Enable and Channel Register, Default channel 76
|
|
regWrite16(0x08, 0x6C, 0x90, 7); // Recommended value by PMmicro
|
|
regWrite16(0x09, 0x48, 0x00, 7); // PA Control register
|
|
|
|
regWrite16(0x0B, 0x00, 0x08, 7); // Recommended value by PMmicro
|
|
regWrite16(0x0D, 0x48, 0xBD, 7); // Recommended value by PMmicro
|
|
regWrite16(0x16, 0x00, 0xFF, 7); // Recommended value by PMmicro
|
|
regWrite16(0x18, 0x00, 0x67, 7); // Recommended value by PMmicro
|
|
|
|
regWrite16(0x1A, 0x19, 0xE0, 7); // Recommended value by PMmicro
|
|
regWrite16(0x1B, 0x13, 0x00, 7); // Recommended value by PMmicro
|
|
|
|
regWrite16(0x20, 0x48, 0x00, 7); // Recommended value by PMmicro
|
|
regWrite16(0x21, 0x3F, 0xC7, 7); // Recommended value by PMmicro
|
|
regWrite16(0x22, 0x20, 0x00, 7); // Recommended value by PMmicro
|
|
regWrite16(0x23, 0x03, 0x00, 7); // Recommended value by PMmicro
|
|
|
|
regWrite16(0x24, 0x72, 0x36, 7); // Sync R0
|
|
regWrite16(0x27, 0x18, 0x09, 7); // Sync R3
|
|
regWrite16(0x28, 0x44, 0x02, 7); // Recommended value by PMmicro
|
|
regWrite16(0x29, 0xB0, 0x00, 7); // Recommended value by PMmicro
|
|
regWrite16(0x2A, 0xFD, 0xB0, 7); // Recommended value by PMmicro
|
|
|
|
if (bWriteDefaultDefault == true) {
|
|
regWrite16(0x01, 0x56, 0x81, 7); // Recommended value by PMmicro
|
|
regWrite16(0x0A, 0x7F, 0xFD, 7); // Recommended value by PMmicro
|
|
regWrite16(0x0C, 0x00, 0x00, 7); // Recommended value by PMmicro
|
|
regWrite16(0x17, 0x80, 0x05, 7); // Recommended value by PMmicro
|
|
regWrite16(0x19, 0x16, 0x59, 7); // Recommended value by PMmicro
|
|
regWrite16(0x1C, 0x18, 0x00, 7); // Recommended value by PMmicro
|
|
|
|
regWrite16(0x25, 0x00, 0x00, 7); // Recommended value by PMmicro
|
|
regWrite16(0x26, 0x00, 0x00, 7); // Recommended value by PMmicro
|
|
regWrite16(0x2B, 0x00, 0x0F, 7); // Recommended value by PMmicro
|
|
}
|
|
}
|
|
|
|
/**************************************************************************/
|
|
// Set sync word
|
|
/**************************************************************************/
|
|
void LT8900MiLightRadio::vSetSyncWord(uint16_t syncWord3, uint16_t syncWord2, uint16_t syncWord1, uint16_t syncWord0)
|
|
{
|
|
uiWriteRegister(R_SYNCWORD1, syncWord0);
|
|
uiWriteRegister(R_SYNCWORD2, syncWord1);
|
|
uiWriteRegister(R_SYNCWORD3, syncWord1);
|
|
uiWriteRegister(R_SYNCWORD4, syncWord3);
|
|
}
|
|
|
|
/**************************************************************************/
|
|
// Low level register write with delay
|
|
/**************************************************************************/
|
|
void LT8900MiLightRadio::regWrite16(byte ADDR, byte V1, byte V2, byte WAIT)
|
|
{
|
|
digitalWrite(_csPin, LOW);
|
|
SPI.transfer(ADDR);
|
|
SPI.transfer(V1);
|
|
SPI.transfer(V2);
|
|
digitalWrite(_csPin, HIGH);
|
|
delayMicroseconds(WAIT);
|
|
}
|
|
|
|
|
|
/**************************************************************************/
|
|
// Low level register read
|
|
/**************************************************************************/
|
|
uint16_t LT8900MiLightRadio::uiReadRegister(uint8_t reg)
|
|
{
|
|
SPI.setDataMode(SPI_MODE1);
|
|
digitalWrite(_csPin, LOW);
|
|
SPI.transfer(REGISTER_READ | (REGISTER_MASK & reg));
|
|
uint8_t high = SPI.transfer(0x00);
|
|
uint8_t low = SPI.transfer(0x00);
|
|
|
|
digitalWrite(_csPin, HIGH);
|
|
|
|
SPI.setDataMode(SPI_MODE0);
|
|
return (high << 8 | low);
|
|
}
|
|
|
|
|
|
/**************************************************************************/
|
|
// Low level 16bit register write
|
|
/**************************************************************************/
|
|
uint8_t LT8900MiLightRadio::uiWriteRegister(uint8_t reg, uint16_t data)
|
|
{
|
|
uint8_t high = data >> 8;
|
|
uint8_t low = data & 0xFF;
|
|
|
|
digitalWrite(_csPin, LOW);
|
|
|
|
uint8_t result = SPI.transfer(REGISTER_WRITE | (REGISTER_MASK & reg));
|
|
SPI.transfer(high);
|
|
SPI.transfer(low);
|
|
|
|
digitalWrite(_csPin, HIGH);
|
|
|
|
return result;
|
|
}
|
|
|
|
/**************************************************************************/
|
|
// Start listening on specified channel and syncword
|
|
/**************************************************************************/
|
|
void LT8900MiLightRadio::vStartListening(uint uiChannelToListenTo)
|
|
{
|
|
_dupes_received = 0;
|
|
vSetSyncWord(_config.syncword3, 0,0,_config.syncword0);
|
|
//vSetChannel(uiChannelToListenTo);
|
|
|
|
_channel = uiChannelToListenTo;
|
|
|
|
vResumeRX();
|
|
delay(5);
|
|
}
|
|
|
|
/**************************************************************************/
|
|
// Resume listening - without changing the channel and syncword
|
|
/**************************************************************************/
|
|
void LT8900MiLightRadio::vResumeRX(void)
|
|
{
|
|
_dupes_received = 0;
|
|
uiWriteRegister(R_CHANNEL, _channel & CHANNEL_MASK); //turn off rx/tx
|
|
delay(3);
|
|
uiWriteRegister(R_FIFO_CONTROL, 0x0080); //flush rx
|
|
uiWriteRegister(R_CHANNEL, (_channel & CHANNEL_MASK) | _BV(CHANNEL_RX_BIT)); //enable RX
|
|
}
|
|
|
|
/**************************************************************************/
|
|
// Check if data is available using the hardware pin PKT_FLAG
|
|
/**************************************************************************/
|
|
bool LT8900MiLightRadio::bAvailablePin() {
|
|
return digitalRead(_pin_pktflag) > 0;
|
|
}
|
|
|
|
/**************************************************************************/
|
|
// Check if data is available using the PKT_FLAG state in the status register
|
|
/**************************************************************************/
|
|
bool LT8900MiLightRadio::bAvailableRegister() {
|
|
//read the PKT_FLAG state; this can also be done with a hard wire.
|
|
uint16_t value = uiReadRegister(R_STATUS);
|
|
|
|
if (bitRead(value, STATUS_CRC_BIT) != 0) {
|
|
#ifdef DEBUG_PRINTF
|
|
Serial.println(F("LT8900: CRC failed"));
|
|
#endif
|
|
vResumeRX();
|
|
return false;
|
|
}
|
|
|
|
return (value & STATUS_PKT_BIT_MASK) > 0;
|
|
}
|
|
|
|
/**************************************************************************/
|
|
// Read the RX buffer
|
|
/**************************************************************************/
|
|
int LT8900MiLightRadio::iReadRXBuffer(uint8_t *buffer, size_t maxBuffer) {
|
|
size_t bufferIx = 0;
|
|
uint16_t data;
|
|
|
|
if (_currentPacketLen == 0) {
|
|
if (! available()) {
|
|
return -1;
|
|
}
|
|
|
|
data = uiReadRegister(R_FIFO);
|
|
|
|
_currentPacketLen = (data >> 8);
|
|
_currentPacketPos = 1;
|
|
|
|
buffer[bufferIx++] = (data & 0xFF);
|
|
}
|
|
|
|
while (_currentPacketPos < _currentPacketLen && (bufferIx+1) < maxBuffer) {
|
|
data = uiReadRegister(R_FIFO);
|
|
buffer[bufferIx++] = data >> 8;
|
|
buffer[bufferIx++] = data & 0xFF;
|
|
|
|
_currentPacketPos += 2;
|
|
}
|
|
|
|
#ifdef DEBUG_PRINTF
|
|
printf_P(
|
|
PSTR("Read %d/%d bytes in RX, read %d bytes into buffer\n"),
|
|
_currentPacketPos,
|
|
_currentPacketLen,
|
|
bufferIx
|
|
);
|
|
#endif
|
|
|
|
if (_currentPacketPos >= _currentPacketLen) {
|
|
_currentPacketPos = 0;
|
|
_currentPacketLen = 0;
|
|
}
|
|
|
|
return bufferIx;
|
|
}
|
|
|
|
|
|
/**************************************************************************/
|
|
// Set the active channel for the radio module
|
|
/**************************************************************************/
|
|
void LT8900MiLightRadio::vSetChannel(uint8_t channel)
|
|
{
|
|
_channel = channel;
|
|
uiWriteRegister(R_CHANNEL, (_channel & CHANNEL_MASK));
|
|
}
|
|
|
|
/**************************************************************************/
|
|
// Startup
|
|
/**************************************************************************/
|
|
int LT8900MiLightRadio::begin()
|
|
{
|
|
vSetChannel(_config.channels[0]);
|
|
configure();
|
|
available();
|
|
return 0;
|
|
}
|
|
|
|
/**************************************************************************/
|
|
// Configure the module according to type, and start listening
|
|
/**************************************************************************/
|
|
int LT8900MiLightRadio::configure()
|
|
{
|
|
vInitRadioModule();
|
|
vSetSyncWord(_config.syncword3, 0,0,_config.syncword0);
|
|
vStartListening(_config.channels[0]);
|
|
return 0;
|
|
}
|
|
|
|
/**************************************************************************/
|
|
// Check if data is available
|
|
/**************************************************************************/
|
|
bool LT8900MiLightRadio::available()
|
|
{
|
|
if (_currentPacketPos < _currentPacketLen) {
|
|
return true;
|
|
}
|
|
|
|
return bAvailablePin() && bAvailableRegister();
|
|
}
|
|
|
|
/**************************************************************************/
|
|
// Read received data from buffer to upper layer
|
|
/**************************************************************************/
|
|
int LT8900MiLightRadio::read(uint8_t frame[], size_t &frame_length)
|
|
{
|
|
if (!available()) {
|
|
frame_length = 0;
|
|
return -1;
|
|
}
|
|
|
|
#ifdef DEBUG_PRINTF
|
|
Serial.println(F("LT8900: Radio was available, reading packet..."));
|
|
#endif
|
|
|
|
uint8_t buf[MILIGHT_MAX_PACKET_LENGTH];
|
|
int packetSize = iReadRXBuffer(buf, MILIGHT_MAX_PACKET_LENGTH);
|
|
|
|
if (packetSize > 0) {
|
|
frame_length = packetSize;
|
|
memcpy(frame, buf, packetSize);
|
|
}
|
|
|
|
vResumeRX();
|
|
|
|
return packetSize;
|
|
}
|
|
|
|
/**************************************************************************/
|
|
// Write data
|
|
/**************************************************************************/
|
|
int LT8900MiLightRadio::write(uint8_t frame[], size_t frame_length)
|
|
{
|
|
if (frame_length > sizeof(_out_packet) - 1) {
|
|
return -1;
|
|
}
|
|
|
|
memcpy(_out_packet + 1, frame, frame_length);
|
|
_out_packet[0] = frame_length;
|
|
|
|
SPI.setDataMode(SPI_MODE1);
|
|
|
|
int retval = resend();
|
|
yield();
|
|
|
|
SPI.setDataMode(SPI_MODE0);
|
|
|
|
if (retval < 0) {
|
|
return retval;
|
|
}
|
|
return frame_length;
|
|
}
|
|
|
|
/**************************************************************************/
|
|
// Handle the transmission to regarding to freq diversity and repeats
|
|
/**************************************************************************/
|
|
int LT8900MiLightRadio::resend()
|
|
{
|
|
byte Length = _out_packet[0];
|
|
|
|
for (size_t i = 0; i < MiLightRadioConfig::NUM_CHANNELS; i++)
|
|
{
|
|
sendPacket(_out_packet, Length, _config.channels[i]);
|
|
delayMicroseconds(DEFAULT_TIME_BETWEEN_RETRANSMISSIONS_uS);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**************************************************************************/
|
|
// The actual transmit happens here
|
|
/**************************************************************************/
|
|
bool LT8900MiLightRadio::sendPacket(uint8_t *data, size_t packetSize, byte byChannel)
|
|
{
|
|
if(_bConnected) // Must be connected to module otherwise it might lookup waiting for _pin_pktflag
|
|
{
|
|
if (packetSize < 1 || packetSize > 255)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
uiWriteRegister(R_CHANNEL, 0x0000);
|
|
uiWriteRegister(R_FIFO_CONTROL, 0x8080); //flush tx and RX
|
|
|
|
digitalWrite(_csPin, LOW); // Enable PL1167 SPI transmission
|
|
SPI.transfer(R_FIFO); // Start writing PL1167's FIFO Data register
|
|
SPI.transfer(packetSize); // Length of data buffer: x bytes
|
|
|
|
for (byte iCounter = 0; iCounter < packetSize; iCounter++)
|
|
{
|
|
SPI.transfer((data[1+iCounter]));
|
|
}
|
|
digitalWrite(_csPin, HIGH); // Disable PL1167 SPI transmission
|
|
delayMicroseconds(10);
|
|
|
|
uiWriteRegister(R_CHANNEL, (byChannel & CHANNEL_MASK) | _BV(CHANNEL_TX_BIT)); //enable RX
|
|
|
|
//Wait until the packet is sent.
|
|
while (digitalRead(_pin_pktflag) == 0)
|
|
{
|
|
//do nothing.
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
const MiLightRadioConfig& LT8900MiLightRadio::config() {
|
|
return _config;
|
|
}
|