Now both roles use the IRQ. Thanks to Mike Denzien for testing & troubleshooting.
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@ -85,12 +85,6 @@ void setup(void)
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printf("\n\rRF24/examples/pingpair_irq/\n\r");
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printf("ROLE: %s\n\r",role_friendly_name[role]);
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//
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// Attach interrupt handler to interrupt #0 (using pin 2)
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//
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attachInterrupt(0, check_radio, FALLING);
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//
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// Setup and configure rf radio
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//
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@ -100,14 +94,17 @@ void setup(void)
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// We will be using the Ack Payload feature, so please enable it
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radio.enableAckPayload();
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// Pick a high channel
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// Optional: Increase CRC length for improved reliability
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radio.setCRCLength(RF24_CRC_16);
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// Optional: Pick a high channel
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radio.setChannel(110);
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//
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// Open pipes to other nodes for communication
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//
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// This simple sketch opens a single pipes for these two nodes to communicate
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// This simple sketch opens a single pipe for these two nodes to communicate
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// back and forth. One listens on it, the other talks to it.
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if ( role == role_sender )
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@ -131,13 +128,19 @@ void setup(void)
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//
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radio.printDetails();
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//
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// Attach interrupt handler to interrupt #0 (using pin 2)
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// on BOTH the sender and receiver
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//
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attachInterrupt(0, check_radio, FALLING);
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}
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static uint32_t message_count = 0;
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void loop(void)
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{
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//
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// Sender role. Repeatedly send the current time
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//
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@ -152,34 +155,10 @@ void loop(void)
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// Try again soon
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delay(2000);
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}
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//
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// Receiver role. Receive each packet, dump it out, add ack payload for next time
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// Receiver role: Does nothing! All the work is in IRQ
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//
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if ( role == role_receiver )
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{
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// if there is data ready
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if ( radio.available() )
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{
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// Dump the payloads until we've gotten everything
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static unsigned long got_time;
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boolean done = false;
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while (!done)
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{
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// Fetch the payload, and see if this was the last one.
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done = radio.read( &got_time, sizeof(unsigned long) );
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// Spew it
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printf("Got payload %lu\n",got_time);
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}
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// Add an ack packet for the next time around. This is a simple
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// packet counter
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radio.writeAckPayload( 1, &message_count, sizeof(message_count) );
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++message_count;
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}
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}
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}
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@ -188,23 +167,55 @@ void check_radio(void)
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// What happened?
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bool tx,fail,rx;
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radio.whatHappened(tx,fail,rx);
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// Have we successfully transmitted?
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if ( tx )
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{
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radio.powerDown();
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printf("Send:OK\n\r");
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if ( role == role_sender )
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printf("Send:OK\n\r");
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if ( role == role_receiver )
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printf("Ack Payload:Sent\n\r");
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}
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// Have we failed to transmit?
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if ( fail )
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{
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radio.powerDown();
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printf("Send:Failed\n\r");
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if ( role == role_sender )
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printf("Send:Failed\n\r");
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if ( role == role_receiver )
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printf("Ack Payload:Failed\n\r");
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}
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// Transmitter can power down for now, because
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// the transmission is done.
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if ( ( tx || fail ) && ( role == role_sender ) )
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radio.powerDown();
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// Did we receive a message?
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if ( rx )
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{
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radio.read(&message_count,sizeof(message_count));
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printf("Ack:%lu\n\r",message_count);
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// If we're the sender, we've received an ack payload
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if ( role == role_sender )
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{
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radio.read(&message_count,sizeof(message_count));
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printf("Ack:%lu\n\r",message_count);
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}
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// If we're the receiver, we've received a time message
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if ( role == role_receiver )
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{
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// Get this payload and dump it
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static unsigned long got_time;
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radio.read( &got_time, sizeof(got_time) );
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printf("Got payload %lu\n\r",got_time);
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// Add an ack packet for the next time around. This is a simple
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// packet counter
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radio.writeAckPayload( 1, &message_count, sizeof(message_count) );
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++message_count;
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}
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}
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}
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