void BayRF24::init(uint64_t address, uint8_t c = 0x71, rf24_pa_dbm_e pa_level =
RF24_PA_HIGH, rf24_datarate_e rate = RF24_250KBPS) {
_pipe = address;
RF24::begin();
setChannel(c);
setPayloadSize(32);
enableDynamicPayloads();
setCRCLength (RF24_CRC_16);
setDataRate(rate);
setPALevel(pa_level);
_pa_level = pa_level;
//changed 0.1.2 - as we normally have a storage on board
//User can call client.setRetries(15,15) after client.init
setRetries(15, 8);
setAutoAck(true);
if (_powerdown)
powerDown();
}
bool QRF24::begin()
{
debug = true;
// Init BCM2835 chipset for talking with us
if (!bcm2835_init())
return false;
// Initialise the CE pin of NRF24 (chip enable)
bcm2835_gpio_fsel(ce_pin, BCM2835_GPIO_FSEL_OUTP);
bcm2835_gpio_write(ce_pin, LOW);
// used to drive custom I/O to trigger my logic analyser
// bcm2835_gpio_fsel(GPIO_CTRL_PIN , BCM2835_GPIO_FSEL_OUTP);
// start the SPI library:
// Note the NRF24 wants mode 0, MSB first and default to 1 Mbps
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST);
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0);
// Set SPI bus Speed
bcm2835_spi_setClockSpeed(spi_speed);
// This initialize the SPI bus with
// csn pin as chip select (custom or not)
bcm2835_spi_begin(csn_pin);
// wait 100ms
delay(100);
// Must allow the radio time to settle else configuration bits will not necessarily stick.
// This is actually only required following power up but some settling time also appears to
// be required after resets too. For full coverage, we'll always assume the worst.
// Enabling 16b CRC is by far the most obvious case if the wrong timing is used - or skipped.
// Technically we require 4.5ms + 14us as a worst case. We'll just call it 5ms for good measure.
// WARNING: Delay is based on P-variant whereby non-P *may* require different timing.
delay( 5 ) ;
// Set 1500uS (minimum for 32B payload in ESB@250KBPS) timeouts, to make testing a little easier
// WARNING: If this is ever lowered, either 250KBS mode with AA is broken or maximum packet
// sizes must never be used. See documentation for a more complete explanation.
//printf("write_register(%02X, %02X)\n", SETUP_RETR, (0b0100 << ARD) | (0b1111 << ARC));
writeRegister(SETUP_RETR,(0b0100 << ARD) | (0b1111 << ARC));
// Restore our default PA level
setPALevel( RF24_PA_MAX ) ;
// Determine if this is a p or non-p RF24 module and then
// reset our data rate back to default value. This works
// because a non-P variant won't allow the data rate to
// be set to 250Kbps.
if( setDataRate( RF24_250KBPS ) )
{
p_variant = true ;
}
// Then set the data rate to the slowest (and most reliable) speed supported by all
// hardware.
setDataRate( RF24_1MBPS ) ;
// Initialize CRC and request 2-byte (16bit) CRC
setCRCLength( RF24_CRC_16 ) ;
// Disable dynamic payloads, to match dynamic_payloads_enabled setting
writeRegister(DYNPD,0);
// Reset current status
// Notice reset and flush is the last thing we do
writeRegister(STATUS,_BV(RX_DR) | _BV(TX_DS) | _BV(MAX_RT) );
// Set up default configuration. Callers can always change it later.
// This channel should be universally safe and not bleed over into adjacent
// spectrum.
setChannel(76);
// Flush buffers
flushRx();
flushTx();
return true;
}
