Added ack payload. Added a sample using pingpair as a base with minimal changes.
This commit is contained in:
maniacbug
parent
a88e78a0da
commit
79628e7849
111
RF24.cpp
111
RF24.cpp
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@ -11,7 +11,7 @@
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#include "RF24.h"
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#include "nRF24L01.h"
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#undef SERIAL_DEBUG
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#define SERIAL_DEBUG
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#ifdef SERIAL_DEBUG
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#define IF_SERIAL_DEBUG(x) (x)
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#else
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@ -51,6 +51,18 @@ uint8_t RF24::read_register(uint8_t reg, uint8_t* buf, uint8_t len)
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/******************************************************************/
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uint8_t RF24::read_register(uint8_t reg)
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{
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csn(LOW);
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SPI.transfer( R_REGISTER | ( REGISTER_MASK & reg ) );
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uint8_t result = SPI.transfer(0xff);
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csn(HIGH);
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return result;
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}
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/******************************************************************/
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uint8_t RF24::write_register(uint8_t reg, const uint8_t* buf, uint8_t len)
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{
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uint8_t status;
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@ -190,7 +202,7 @@ void RF24::print_observe_tx(uint8_t value)
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/******************************************************************/
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RF24::RF24(uint8_t _cepin, uint8_t _cspin):
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ce_pin(_cepin), csn_pin(_cspin), payload_size(32)
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ce_pin(_cepin), csn_pin(_cspin), payload_size(32), ack_packet_available(false)
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{
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}
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@ -327,6 +339,7 @@ boolean RF24::write( const void* buf, uint8_t len )
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// Transmitter power-up
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write_register(CONFIG, _BV(EN_CRC) | _BV(PWR_UP));
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delay(2);
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// Send the payload
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write_payload( buf, len );
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@ -339,18 +352,37 @@ boolean RF24::write( const void* buf, uint8_t len )
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// Monitor the send
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uint8_t observe_tx;
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uint8_t status;
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uint8_t retries = 255;
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do
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{
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status = read_register(OBSERVE_TX,&observe_tx,1);
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IF_SERIAL_DEBUG(Serial.print(status,HEX));
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IF_SERIAL_DEBUG(Serial.print(observe_tx,HEX));
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if ( ! retries-- )
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{
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IF_SERIAL_DEBUG(printf("ABORTED: too many retries\n\r"));
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break;
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}
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}
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while( ! ( status & ( _BV(TX_DS) | _BV(MAX_RT) ) ) );
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if ( status & _BV(TX_DS) )
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result = true;
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IF_SERIAL_DEBUG(Serial.println(result?"...OK.":"...Failed"));
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IF_SERIAL_DEBUG(Serial.print(result?"...OK.":"...Failed"));
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ack_packet_available = ( status & _BV(RX_DR) );
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uint8_t pl_len = 0;
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if ( ack_packet_available )
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{
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write_register(STATUS,_BV(RX_DR) );
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csn(LOW);
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SPI.transfer( R_RX_PL_WID );
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pl_len = SPI.transfer(0xff);
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csn(HIGH);
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IF_SERIAL_DEBUG(Serial.print("[AckPacket]/"));
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IF_SERIAL_DEBUG(Serial.println(pl_len,DEC));
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}
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// Yay, we are done.
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ce(LOW);
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@ -378,12 +410,11 @@ boolean RF24::available(void)
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boolean RF24::available(uint8_t* pipe_num)
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{
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uint8_t status = get_status();
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IF_SERIAL_DEBUG(print_status(status));
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boolean result = ( status & _BV(RX_DR) );
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if (result)
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{
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IF_SERIAL_DEBUG(print_status(status));
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// If the caller wants the pipe number, include that
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if ( pipe_num )
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*pipe_num = ( status >> RX_P_NO ) & B111;
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@ -394,6 +425,12 @@ boolean RF24::available(uint8_t* pipe_num)
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// actually READ the payload?
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write_register(STATUS,_BV(RX_DR) );
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// Handle ack payload receipt
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if ( status & _BV(TX_DS) )
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{
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write_register(STATUS,_BV(TX_DS));
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}
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}
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return result;
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@ -458,5 +495,67 @@ void RF24::openReadingPipe(uint8_t child, uint64_t value)
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write_register(EN_RXADDR,en_rx);
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}
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}
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/******************************************************************/
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void RF24::toggle_features(void)
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{
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csn(LOW);
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SPI.transfer( ACTIVATE );
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SPI.transfer( 0x73 );
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csn(HIGH);
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}
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/******************************************************************/
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void RF24::enableAckPayload(void)
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{
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//
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// enable ack payload and dynamic payload features
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//
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write_register(FEATURE,read_register(FEATURE) | _BV(EN_ACK_PAY) | _BV(EN_DPL) );
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// If it didn't work, the features are not enabled
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if ( ! read_register(FEATURE) )
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{
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// So enable them and try again
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toggle_features();
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write_register(FEATURE,read_register(FEATURE) | _BV(EN_ACK_PAY) | _BV(EN_DPL) );
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}
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IF_SERIAL_DEBUG(printf("FEATURE=%i\n\r",read_register(FEATURE)));
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//
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// Enable dynamic payload on pipe 0
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//
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write_register(DYNPD,read_register(DYNPD) | _BV(DPL_P1) | _BV(DPL_P0));
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}
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/******************************************************************/
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void RF24::writeAckPayload(uint8_t pipe, const void* buf, uint8_t len)
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{
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const uint8_t* current = (const uint8_t*)buf;
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csn(LOW);
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SPI.transfer( W_ACK_PAYLOAD | ( pipe & B111 ) );
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uint8_t data_len = min(len,32);
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while ( data_len-- )
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SPI.transfer(*current++);
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csn(HIGH);
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}
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/******************************************************************/
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boolean RF24::isAckPayloadAvailable(void)
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{
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boolean result = ack_packet_available;
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ack_packet_available = false;
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return result;
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}
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// vim:ai:cin:sts=2 sw=2 ft=cpp
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13
RF24.h
13
RF24.h
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@ -21,6 +21,7 @@ private:
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uint8_t ce_pin; /**< "Chip Enable" pin, activates the RX or TX role */
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uint8_t csn_pin; /**< SPI Chip select */
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uint8_t payload_size; /**< Fixed size of payloads */
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boolean ack_packet_available; /**< Whether there is an ack packet waiting */
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protected:
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/**
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@ -54,6 +55,8 @@ protected:
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* @return Current value of status register
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*/
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uint8_t read_register(uint8_t reg, uint8_t* buf, uint8_t len) ;
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uint8_t read_register(uint8_t reg) ;
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/**
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* Write a chunk of data to a register
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@ -95,7 +98,7 @@ protected:
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* @return Current value of status register
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*/
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uint8_t read_payload(void* buf, uint8_t len) ;
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public:
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/**
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* Empty the receive buffer
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*
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@ -109,7 +112,7 @@ protected:
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* @return Current value of status register
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*/
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uint8_t flush_tx(void);
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protected:
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/**
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* Retrieve the current status of the chip
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*
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@ -135,6 +138,7 @@ protected:
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*/
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void print_observe_tx(uint8_t value) ;
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void toggle_features(void);
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/**@}*/
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public:
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@ -299,6 +303,11 @@ public:
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*/
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void openReadingPipe(uint8_t number, uint64_t address);
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void enableAckPayload(void);
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void writeAckPayload(uint8_t pipe, const void* buf, uint8_t len);
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boolean isAckPayloadAvailable(void);
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};
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/**
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@ -0,0 +1 @@
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output/
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@ -0,0 +1,290 @@
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# Arduino Makefile
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# Arduino adaptation by mellis, eighthave, oli.keller
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# Modified by Kerry Wong to support NetBeans
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# Modified by Rob Gray (Graynomad) for use with Windows and no IDE
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# This works in my environment and I use it to program two different
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# 328-based boards and a Mega2560. It's not necessarily robust and
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# I may have broken something in the original file that I don't use.
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#
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# This makefile allows you to build sketches from the command line
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# without the Arduino environment.
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#
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# Instructions for using the makefile:
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#
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# 1. Copy this file into the folder with your sketch. The project code file
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# should have a .c extension however the file gets copied to a .cpp before
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# compilation so you still write in C++.
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#
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# 2. Modify the lines between the double ### rows to set the paths
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# comm ports etc for your system. EG. c:/progra~1/arduino/arduino-00
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# for the Arduino IDE, Note the use of short folder name, don't use
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# "Program files" because spaces will break the build.
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#
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# Set the line containing "MCU" to match your board's processor.
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# Typically ATmega328 or ATmega2560. If you're using a LilyPad Arduino,
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# change F_CPU to 8000000.
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#
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# 3. At the command line, change to the directory containing your
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# program's file and the makefile.
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#
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# 4. Type "make" and press enter to compile/verify your program.
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# The default make target will also perform the uplode using avrdude.
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#
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# The first time this is done all required libraries will be built
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# and a core.a file will be created in the output folder.
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#
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# NOTES:
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# All output goes into a folder called "output" underneath the working folder.
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# The default all: target creates symbol (.sym) and expanded assembly
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# (.lss) files and uploads the program.
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#
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#
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##########################################################
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##########################################################
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# Select processor here
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MCU = atmega328p
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#MCU = atmega2560
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ifeq ($(MCU),atmega2560)
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UPLOAD_RATE = 115200
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AVRDUDE_PROTOCOL = stk500v2
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COM = 39
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endif
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ifeq ($(MCU),atmega328p)
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UPLOAD_RATE = 57600
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AVRDUDE_PROTOCOL = stk500v1
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COM = 33
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endif
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UNAME := $(shell uname)
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ifeq ($(UNAME),Darwin)
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ARDUINO_VERSION = 21
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ARDUINO_DIR = /opt/arduino-00$(ARDUINO_VERSION)
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AVR_TOOLS_PATH = $(ARDUINO_DIR)/hardware/tools/avr/bin
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AVRDUDECONFIG_PATH = $(ARDUINO_DIR)/hardware/tools/avr/etc
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PORT = /dev/tty.usbserial-A600eHIs
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PORT2 = /dev/tty.usbserial-A9007LmI
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else
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ARDUINO_VERSION = 22
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ARDUINO_DIR = /opt/arduino-00$(ARDUINO_VERSION)
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AVR_TOOLS_PATH = /usr/bin
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AVRDUDECONFIG_PATH = $(ARDUINO_DIR)/hardware/tools
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PORT = /dev/ttyUSB0
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PORT2 = /dev/ttyUSB1
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endif
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PROJECT_NAME = $(notdir $(PWD))
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PROJECT_DIR = .
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ARDUINO_CORE = $(ARDUINO_DIR)/hardware/arduino/cores/arduino
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ARDUINO_AVR = $(ARDUINO_DIR)/hardware/tools/avr/avr/include/avr
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ARDUINO_LIB = $(ARDUINO_DIR)/libraries
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F_CPU = 16000000
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##########################################################
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##########################################################
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# Note that if your program has dependencies other than those
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# already listed below, you will need to add them accordingly.
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C_MODULES = \
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$(ARDUINO_CORE)/wiring_pulse.c \
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$(ARDUINO_CORE)/wiring_analog.c \
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$(ARDUINO_CORE)/pins_arduino.c \
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$(ARDUINO_CORE)/wiring.c \
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$(ARDUINO_CORE)/wiring_digital.c \
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$(ARDUINO_CORE)/WInterrupts.c \
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$(ARDUINO_CORE)/wiring_shift.c \
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CXX_MODULES = \
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$(ARDUINO_CORE)/Tone.cpp \
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$(ARDUINO_CORE)/main.cpp \
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$(ARDUINO_CORE)/WMath.cpp \
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$(ARDUINO_CORE)/Print.cpp \
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$(ARDUINO_CORE)/HardwareSerial.cpp \
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$(ARDUINO_LIB)/SPI/SPI.cpp \
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../../RF24.cpp
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CXX_APP = output/$(PROJECT_NAME).cpp
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MODULES = $(C_MODULES) $(CXX_MODULES)
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SRC = $(C_MODULES)
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CXXSRC = $(CXX_MODULES) $(CXX_APP)
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FORMAT = ihex
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# Name of this Makefile (used for "make depend").
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MAKEFILE = Makefile
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# Debugging format.
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# Native formats for AVR-GCC's -g are stabs [default], or dwarf-2.
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# AVR (extended) COFF requires stabs, plus an avr-objcopy run.
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#DEBUG = stabs
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DEBUG =
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OPT = s
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# Place -D or -U options here
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CDEFS = -DF_CPU=$(F_CPU)L -DARDUINO=$(ARDUINO_VERSION)
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CXXDEFS = -DF_CPU=$(F_CPU)L -DARDUINO=$(ARDUINO_VERSION)
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# Place -I options here
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CINCS = -I$(ARDUINO_CORE) -I$(ARDUINO_LIB) -I$(PROJECT_DIR) -I$(ARDUINO_AVR) -I$(ARDUINO_LIB)/SPI -I../..
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CXXINCS = -I$(ARDUINO_CORE) -I$(ARDUINO_LIB)
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# Compiler flag to set the C Standard level.
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# c89 - "ANSI" C
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# gnu89 - c89 plus GCC extensions
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# c99 - ISO C99 standard (not yet fully implemented)
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# gnu99 - c99 plus GCC extensions
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#CSTANDARD = -std=gnu99
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CDEBUG = -g$(DEBUG)
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#CWARN = -Wall -Wstrict-prototypes
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CWARN = -Wall # show all warnings
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#CWARN = -w # suppress all warnings
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CMAP = -Wl,-Map,output.map
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####CTUNING = -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
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CTUNING = -ffunction-sections -fdata-sections
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CXXTUNING = -fno-exceptions -ffunction-sections -fdata-sections
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#CEXTRA = -Wa,-adhlns=$(<:.c=.lst)
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MMCU = -mmcu=$(MCU)
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CFLAGS = $(CDEBUG) -O$(OPT) $(CMAP) $(CWARN) $(CTUNING) $(MMCU) $(CDEFS) $(CINCS) $(CSTANDARD) $(CEXTRA)
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CXXFLAGS = $(CDEBUG) -O$(OPT) $(CWARN) $(CXXTUNING) $(CDEFS) $(CINCS)
|
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#ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs
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LDFLAGS = -O$(OPT) -lm -Wl,--gc-sections
|
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#LDFLAGS = -O$(OPT) -lm -Wl,-Map,output/$(PROJECT_NAME).map
|
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|
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# Programming support using avrdude. Settings and variables.
|
||||
AVRDUDE_PORT = $(PORT)
|
||||
AVRDUDE_WRITE_FLASH = -U flash:w:output/$(PROJECT_NAME).hex:i
|
||||
|
||||
AVRDUDE_FLAGS = -V -F -D -C $(AVRDUDECONFIG_PATH)/avrdude.conf \
|
||||
-p $(MCU) -c $(AVRDUDE_PROTOCOL) -b $(UPLOAD_RATE)
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||||
|
||||
# Program settings
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||||
CC = $(AVR_TOOLS_PATH)/avr-gcc
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||||
CXX = $(AVR_TOOLS_PATH)/avr-g++
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||||
LD = $(AVR_TOOLS_PATH)/avr-gcc
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||||
OBJCOPY = $(AVR_TOOLS_PATH)/avr-objcopy
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||||
OBJDUMP = $(AVR_TOOLS_PATH)/avr-objdump
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AR = $(AVR_TOOLS_PATH)/avr-ar
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||||
SIZE = $(AVR_TOOLS_PATH)/avr-size
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||||
NM = $(AVR_TOOLS_PATH)/avr-nm
|
||||
AVRDUDE = $(AVR_TOOLS_PATH)/avrdude
|
||||
REMOVE = rm -f
|
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MV = mv -f
|
||||
|
||||
# Define all object files.
|
||||
OBJ = $(SRC:.c=.o) $(CXXSRC:.cpp=.o) $(ASRC:.S=.o)
|
||||
OBJ_MODULES = $(C_MODULES:.c=.o) $(CXX_MODULES:.cpp=.o)
|
||||
|
||||
# Define all listing files.
|
||||
LST = $(ASRC:.S=.lst) $(CXXSRC:.cpp=.lst) $(SRC:.c=.lst)
|
||||
|
||||
# Combine all necessary flags and optional flags.
|
||||
# Add target processor to flags.
|
||||
ALL_CFLAGS = $(CFLAGS) -mmcu=$(MCU)
|
||||
ALL_CXXFLAGS = $(CXXFLAGS) -mmcu=$(MCU)
|
||||
ALL_ASFLAGS = -x assembler-with-cpp $(ASFLAGS) -mmcu=$(MCU)
|
||||
ALL_LDFLAGS = $(LDFLAGS) -mmcu=$(MCU)
|
||||
|
||||
# Default target.
|
||||
# This is th etarget that gets executed with a make command
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||||
# that has no parameters, ie "make".
|
||||
all: applet_files build sym lss size upload
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||||
|
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build: elf hex
|
||||
|
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output/$(PROJECT_NAME).cpp: $(PROJECT_NAME).pde
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||||
test -d output || mkdir output
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||||
echo "#include <WProgram.h>" > $@
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||||
echo "#line 1 \"$<\"" >> $@
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cat $< >> $@
|
||||
|
||||
elf: output/$(PROJECT_NAME).elf
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||||
hex: output/$(PROJECT_NAME).hex
|
||||
eep: output/$(PROJECT_NAME).eep
|
||||
lss: output/$(PROJECT_NAME).lss
|
||||
#sym: output/$(PROJECT_NAME).sym
|
||||
|
||||
# Upload HEX file to Arduino
|
||||
upload: output/$(PROJECT_NAME).hex
|
||||
$(AVRDUDE) $(AVRDUDE_FLAGS) -P $(PORT) $(AVRDUDE_WRITE_FLASH)
|
||||
$(AVRDUDE) $(AVRDUDE_FLAGS) -P $(PORT2) $(AVRDUDE_WRITE_FLASH)
|
||||
|
||||
sym:
|
||||
$(NM) -n -C --format=posix output/$(PROJECT_NAME).elf > output/$(PROJECT_NAME).sym
|
||||
|
||||
# Display size of file.
|
||||
size:
|
||||
$(SIZE) output/$(PROJECT_NAME).elf
|
||||
|
||||
# Convert ELF to COFF for use in debugging / simulating in AVR Studio or VMLAB.
|
||||
COFFCONVERT=$(OBJCOPY) --debugging \
|
||||
--change-section-address .data-0x800000 \
|
||||
--change-section-address .bss-0x800000 \
|
||||
--change-section-address .noinit-0x800000 \
|
||||
--change-section-address .eeprom-0x810000
|
||||
|
||||
coff: output/$(PROJECT_NAME).elf
|
||||
$(COFFCONVERT) -O coff-avr output/$(PROJECT_NAME).elf $(PROJECT_NAME).cof
|
||||
|
||||
extcoff: $(PROJECT_NAME).elf
|
||||
$(COFFCONVERT) -O coff-ext-avr output/$(PROJECT_NAME).elf $(PROJECT_NAME).cof
|
||||
|
||||
.SUFFIXES: .elf .hex .eep .lss .sym
|
||||
|
||||
.elf.hex:
|
||||
$(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
|
||||
|
||||
.elf.eep:
|
||||
$(OBJCOPY) -O $(FORMAT) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
|
||||
--no-change-warnings \
|
||||
--change-section-lma .eeprom=0 $< $@
|
||||
|
||||
# Create extended listing file from ELF output file.
|
||||
.elf.lss:
|
||||
$(OBJDUMP) -h -S $< > $@
|
||||
|
||||
# Link: create ELF output file from library.
|
||||
#output/$(PROJECT_NAME).elf: $(PROJECT_NAME).c output/core.a
|
||||
output/$(PROJECT_NAME).elf: output/$(PROJECT_NAME).o output/core.a
|
||||
$(LD) $(ALL_LDFLAGS) -o $@ output/$(PROJECT_NAME).o output/core.a
|
||||
|
||||
output/core.a: $(OBJ_MODULES)
|
||||
@for i in $(OBJ_MODULES); do echo $(AR) rcs output/core.a $$i; $(AR) rcs output/core.a $$i; done
|
||||
|
||||
# Compile: create object files from C++ source files.
|
||||
.cpp.o:
|
||||
$(CXX) -c $(ALL_CXXFLAGS) $< -o $@
|
||||
|
||||
# Compile: create object files from C source files.
|
||||
.c.o:
|
||||
$(CC) -c $(ALL_CFLAGS) $< -o $@
|
||||
|
||||
# Compile: create assembler files from C source files.
|
||||
.c.s:
|
||||
$(CC) -S $(ALL_CFLAGS) $< -o $@
|
||||
|
||||
# Assemble: create object files from assembler source files.
|
||||
.S.o:
|
||||
$(CC) -c $(ALL_ASFLAGS) $< -o $@
|
||||
|
||||
# Automatic dependencies
|
||||
%.d: %.c
|
||||
$(CC) -M $(ALL_CFLAGS) $< | sed "s;$(notdir $*).o:;$*.o $*.d:;" > $@
|
||||
|
||||
%.d: %.cpp
|
||||
$(CXX) -M $(ALL_CXXFLAGS) $< | sed "s;$(notdir $*).o:;$*.o $*.d:;" > $@
|
||||
|
||||
# Target: clean project.
|
||||
clean:
|
||||
$(REMOVE) output/$(PROJECT_NAME).hex output/$(PROJECT_NAME).eep output/$(PROJECT_NAME).cof output/$(PROJECT_NAME).elf \
|
||||
output/$(PROJECT_NAME).map output/$(PROJECT_NAME).sym output/$(PROJECT_NAME).lss output/core.a \
|
||||
$(OBJ) $(LST) $(SRC:.c=.s) $(SRC:.c=.d) $(CXXSRC:.cpp=.s) $(CXXSRC:.cpp=.d)
|
||||
|
||||
#.PHONY: all build elf hex eep lss sym program coff extcoff clean applet_files sizebefore sizeafter
|
||||
.PHONY: all build elf hex eep lss sym program coff extcoff applet_files sizebefore sizeafter
|
||||
|
||||
#include $(SRC:.c=.d)
|
||||
#include $(CXXSRC:.cpp=.d)
|
||||
|
|
@ -0,0 +1,249 @@
|
|||
/*
|
||||
Copyright (C) 2011 James Coliz, Jr. <maniacbug@ymail.com>
|
||||
|
||||
This program is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU General Public License
|
||||
version 2 as published by the Free Software Foundation.
|
||||
*/
|
||||
|
||||
/**
|
||||
* Example RF Radio Ping Pair
|
||||
*
|
||||
* This is an example of how to use the RF24 class. Write this sketch to two different nodes,
|
||||
* connect the role_pin to ground on one. The ping node sends the current time to the pong node,
|
||||
* which responds by sending the value back. The ping node can then see how long the whole cycle
|
||||
* took.
|
||||
*/
|
||||
|
||||
#include <SPI.h>
|
||||
#include "nRF24L01.h"
|
||||
#include "RF24.h"
|
||||
#include "printf.h"
|
||||
|
||||
//
|
||||
// Hardware configuration
|
||||
//
|
||||
|
||||
// Set up nRF24L01 radio on SPI bus plus pins 8 & 9
|
||||
|
||||
RF24 radio(8,9);
|
||||
|
||||
// sets the role of this unit in hardware. Connect to GND to be the 'pong' receiver
|
||||
// Leave open to be the 'ping' transmitter
|
||||
const short role_pin = 7;
|
||||
|
||||
const short led_pin = 13; // flash the led when a packet has been sent
|
||||
|
||||
//
|
||||
// Topology
|
||||
//
|
||||
|
||||
// Radio pipe addresses for the 2 nodes to communicate.
|
||||
const uint64_t pipes[2] = { 0xE8E8F0F0E1LL, 0xE8E8F0F0D2LL };
|
||||
|
||||
//
|
||||
// Role management
|
||||
//
|
||||
// Set up role. This sketch uses the same software for all the nodes
|
||||
// in this system. Doing so greatly simplifies testing. The hardware itself specifies
|
||||
// which node it is.
|
||||
//
|
||||
// This is done through the role_pin
|
||||
//
|
||||
|
||||
// The various roles supported by this sketch
|
||||
typedef enum { role_ping_out = 1, role_pong_back } role_e;
|
||||
|
||||
// The debug-friendly names of those roles
|
||||
const char* role_friendly_name[] = { "invalid", "Ping out", "Pong back"};
|
||||
|
||||
// The role of the current running sketch
|
||||
role_e role;
|
||||
|
||||
void setup(void)
|
||||
{
|
||||
//
|
||||
// Role
|
||||
//
|
||||
|
||||
// set up the role pin
|
||||
pinMode(role_pin, INPUT);
|
||||
digitalWrite(role_pin,HIGH);
|
||||
delay(20); // Just to get a solid reading on the role pin
|
||||
|
||||
// read the address pin, establish our role
|
||||
if ( digitalRead(role_pin) )
|
||||
role = role_ping_out;
|
||||
else
|
||||
role = role_pong_back;
|
||||
|
||||
//
|
||||
// Print preamble
|
||||
//
|
||||
|
||||
Serial.begin(9600);
|
||||
printf_begin();
|
||||
printf("\n\rRF24/examples/pingpair_pl/\n\r");
|
||||
printf("ROLE: %s\n\r",role_friendly_name[role]);
|
||||
|
||||
//
|
||||
// Setup and configure rf radio
|
||||
//
|
||||
|
||||
radio.begin();
|
||||
|
||||
// We will be using the Ack Payload feature, so please enable it
|
||||
radio.enableAckPayload();
|
||||
|
||||
//
|
||||
// Open pipes to other nodes for communication
|
||||
//
|
||||
|
||||
// This simple sketch opens two pipes for these two nodes to communicate
|
||||
// back and forth.
|
||||
// Open 'our' pipe for writing
|
||||
// Open the 'other' pipe for reading, in position #1 (we can have up to 5 pipes open for reading)
|
||||
|
||||
if ( role == role_ping_out )
|
||||
{
|
||||
radio.openWritingPipe(pipes[0]);
|
||||
radio.openReadingPipe(1,pipes[1]);
|
||||
}
|
||||
else
|
||||
{
|
||||
radio.openWritingPipe(pipes[1]);
|
||||
radio.openReadingPipe(1,pipes[0]);
|
||||
}
|
||||
|
||||
//
|
||||
// Start listening
|
||||
//
|
||||
|
||||
radio.startListening();
|
||||
|
||||
//
|
||||
// Dump the configuration of the rf unit for debugging
|
||||
//
|
||||
|
||||
radio.printDetails();
|
||||
}
|
||||
|
||||
void loop(void)
|
||||
{
|
||||
//
|
||||
// Ping out role. Repeatedly send the current time
|
||||
//
|
||||
|
||||
if (role == role_ping_out)
|
||||
{
|
||||
// First, stop listening so we can talk.
|
||||
radio.stopListening();
|
||||
|
||||
// Take the time, and send it. This will block until complete
|
||||
unsigned long time = millis();
|
||||
printf("Now sending %lu...",time);
|
||||
radio.write( &time, sizeof(unsigned long) );
|
||||
|
||||
if ( radio.isAckPayloadAvailable() )
|
||||
{
|
||||
static char response[32];
|
||||
radio.read(response,32);
|
||||
printf("Ack: [%s]",response);
|
||||
|
||||
// try flushing the rx buffer to get the ack packet out of the system ...
|
||||
radio.flush_rx();
|
||||
}
|
||||
|
||||
// Now, continue listening
|
||||
radio.startListening();
|
||||
|
||||
// Wait here until we get a response, or timeout (250ms)
|
||||
unsigned long started_waiting_at = millis();
|
||||
bool timeout = false;
|
||||
while ( ! radio.available() && ! timeout )
|
||||
if (millis() - started_waiting_at > 500 )
|
||||
timeout = true;
|
||||
|
||||
// Describe the results
|
||||
if ( timeout )
|
||||
{
|
||||
printf("Failed, response timed out.\n\r");
|
||||
}
|
||||
else
|
||||
{
|
||||
// Stop listening while we are clocking out the data
|
||||
radio.stopListening();
|
||||
|
||||
// Dump the payloads until we've gotten everything
|
||||
unsigned long got_time;
|
||||
boolean done = false;
|
||||
while (!done)
|
||||
{
|
||||
// Fetch the payload, and see if this was the last one.
|
||||
done = radio.read( &got_time, sizeof(unsigned long) );
|
||||
|
||||
// Spew it
|
||||
printf("Got response %lu, round-trip delay: %lu\n\r",got_time,millis()-got_time);
|
||||
}
|
||||
// Begin listening again
|
||||
radio.startListening();
|
||||
}
|
||||
|
||||
// Try again later
|
||||
digitalWrite(led_pin,HIGH);
|
||||
delay(3000);
|
||||
digitalWrite(led_pin,LOW);
|
||||
}
|
||||
|
||||
//
|
||||
// Pong back role. Receive each packet, dump it out, and send it back
|
||||
//
|
||||
|
||||
if ( role == role_pong_back )
|
||||
{
|
||||
// if there is data ready
|
||||
if ( radio.available() )
|
||||
{
|
||||
// Dump the payloads until we've gotten everything
|
||||
unsigned long got_time;
|
||||
boolean done = false;
|
||||
while (!done)
|
||||
{
|
||||
// Fetch the payload, and see if this was the last one.
|
||||
done = radio.read( &got_time, sizeof(unsigned long) );
|
||||
|
||||
// Spew it
|
||||
printf("Got payload %lu...",got_time);
|
||||
}
|
||||
|
||||
// First, stop listening so we can talk
|
||||
radio.stopListening();
|
||||
|
||||
//delay(250);
|
||||
|
||||
// necessary to flush the ack packet out
|
||||
// but kills the entire tx queue, which I might not
|
||||
// want in the future!!
|
||||
radio.flush_tx();
|
||||
|
||||
// Send the final one back.
|
||||
radio.write( &got_time, sizeof(unsigned long) );
|
||||
printf("Sent response.\n\r");
|
||||
|
||||
// Now, resume listening so we catch the next packets.
|
||||
radio.startListening();
|
||||
|
||||
//delay(250);
|
||||
|
||||
// Add an ack packet for the next time around
|
||||
static unsigned id = 0;
|
||||
static char pl_buffer[10];
|
||||
memset(pl_buffer,' ',10);
|
||||
pl_buffer[9] = 0;
|
||||
snprintf(pl_buffer,10,"id %04x",id++);
|
||||
radio.writeAckPayload( 1, pl_buffer, 10 );
|
||||
|
||||
}
|
||||
}
|
||||
}
|
||||
// vim:ai:cin:sts=2 sw=2 ft=cpp
|
||||
|
|
@ -0,0 +1,33 @@
|
|||
/*
|
||||
Copyright (C) 2011 James Coliz, Jr. <maniacbug@ymail.com>
|
||||
|
||||
This program is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU General Public License
|
||||
version 2 as published by the Free Software Foundation.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @file printf.h
|
||||
*
|
||||
* Setup necessary to direct stdout to the Arduino Serial library, which
|
||||
* enables 'printf'
|
||||
*/
|
||||
|
||||
#ifndef __PRINTF_H__
|
||||
#define __PRINTF_H__
|
||||
|
||||
#include "WProgram.h"
|
||||
|
||||
int serial_putc( char c, FILE *t )
|
||||
{
|
||||
Serial.write( c );
|
||||
|
||||
return c;
|
||||
}
|
||||
|
||||
void printf_begin(void)
|
||||
{
|
||||
fdevopen( &serial_putc, 0 );
|
||||
}
|
||||
|
||||
#endif // __PRINTF_H__
|
||||
14
nRF24L01.h
14
nRF24L01.h
|
|
@ -47,6 +47,8 @@
|
|||
#define RX_PW_P4 0x15
|
||||
#define RX_PW_P5 0x16
|
||||
#define FIFO_STATUS 0x17
|
||||
#define DYNPD 0x1C
|
||||
#define FEATURE 0x1D
|
||||
|
||||
/* Bit Mnemonics */
|
||||
#define MASK_RX_DR 6
|
||||
|
|
@ -87,13 +89,25 @@
|
|||
#define TX_EMPTY 4
|
||||
#define RX_FULL 1
|
||||
#define RX_EMPTY 0
|
||||
#define DPL_P5 5
|
||||
#define DPL_P4 4
|
||||
#define DPL_P3 3
|
||||
#define DPL_P2 2
|
||||
#define DPL_P1 1
|
||||
#define DPL_P0 0
|
||||
#define EN_DPL 2
|
||||
#define EN_ACK_PAY 1
|
||||
#define EN_DYN_ACK 0
|
||||
|
||||
/* Instruction Mnemonics */
|
||||
#define R_REGISTER 0x00
|
||||
#define W_REGISTER 0x20
|
||||
#define REGISTER_MASK 0x1F
|
||||
#define ACTIVATE 0x50
|
||||
#define R_RX_PL_WID 0x60
|
||||
#define R_RX_PAYLOAD 0x61
|
||||
#define W_TX_PAYLOAD 0xA0
|
||||
#define W_ACK_PAYLOAD 0xA8
|
||||
#define FLUSH_TX 0xE1
|
||||
#define FLUSH_RX 0xE2
|
||||
#define REUSE_TX_PL 0xE3
|
||||
|
|
|
|||
Loading…
Reference in New Issue