topaLE
/
ahoy
mirror of https://github.com/lumapu/ahoy.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Browse Source

working discovery tool

pull/2/head
Martin Grill 3 years ago
parent
d8ce70fd53
commit
59aa635ebe
2 changed files with 26 additions and 215 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 2
      tools/rpi/discover/CMakeLists.txt
  2. 239
      tools/rpi/discover/discover.cpp

2
tools/rpi/discover/CMakeLists.txt
View File

@ -6,7 +6,7 @@ add_compile_options(-Ofast -Wall) # passing the compiler a `-pthread` flag doesn
find_library(RF24 rf24 REQUIRED)
message(STATUS "using RF24 library: ${RF24}")
add_executable(discover discover.cpp)
add_executable(discover discover.cpp common.cpp)
target_link_libraries(discover PUBLIC ${RF24} pthread)
add_executable(pretender pretender.cpp common.cpp)

239
tools/rpi/discover/discover.cpp
View File

@ -18,65 +18,16 @@
#include <time.h> // CLOCK_MONOTONIC_RAW, timespec, clock_gettime()
#include <RF24/RF24.h> // RF24, RF24_PA_LOW, delay()
using namespace std;
// Generic:
RF24 radio(22, 0);
// See http://nRF24.github.io/RF24/pages.html for more information on usage
// For this example, we'll be using a payload containing
// a single float number that will be incremented
// on every successful transmission
static union {
float payload = 0.0;
uint8_t b[4];
};
void setRole(); // prototype to set the node's role
void master(); // prototype of the TX node's behavior
void slave(); // prototype of the RX node's behavior
// custom defined timer for evaluating transmission time in microseconds
struct timespec startTimer, endTimer;
uint32_t getMicros(); // prototype to get ellapsed time in microseconds
/** Convert given 5-byte address to human readable hex string */
string prettyPrintAddr(string &a)
{
ostringstream o;
o << hex << setw(2)
<< setfill('0') << setw(2) << int(a[0])
<< ":" << setw(2) << int(a[1])
<< ":" << setw(2) << int(a[2])
<< ":" << setw(2) << int(a[3])
<< ":" << setw(2) << int(a[4]) << dec;
return o.str();
}
#include <time.h>
#include <stdlib.h>
#include "common.hpp"
/** Convert a Hoymiles inverter/DTU serial number into its
* corresponding NRF24 address byte sequence (5 bytes).
*
* The inverters use a BCD representation of the last 8
* digits of their serial number, in reverse byte order,
* followed by \x01.
*/
string serno2shockburstaddrbytes(uint64_t n)
{
char b[5];
b[3] = (((n/10)%10) << 4) | ((n/1)%10);
b[2] = (((n/1000)%10) << 4) | ((n/100)%10);
b[1] = (((n/100000)%10) << 4) | ((n/10000)%10);
b[0] = (((n/10000000)%10) << 4) | ((n/1000000)%10);
b[4] = 0x01;
string s = string(b, sizeof(b));
using namespace std;
cout << dec << "ser# " << n << " --> addr "
<< prettyPrintAddr(s) << endl;
return s;
}
// connection to our radio board
RF24 radio(22, 0, 1000000);
// See http://nRF24.github.io/RF24/pages.html for more information on usage
/** Ping the given address.
@ -84,31 +35,33 @@ string serno2shockburstaddrbytes(uint64_t n)
*/
bool doPing(int ch, string src, string dst)
{
// radio.setPayloadSize(sizeof(payload)); // float datatype occupies 4 bytes
// radio.setPayloadSize(4); // float datatype occupies 4 bytes
const int payloadsize = 12;
char payload[20];
radio.enableDynamicPayloads();
radio.setChannel(ch);
radio.setPALevel(RF24_PA_MIN); // RF24_PA_MAX is default.
radio.setPALevel(RF24_PA_MAX); // RF24_PA_MAX is default.
radio.setDataRate(RF24_250KBPS);
// set the TX address of the RX node into the TX pipe
radio.openWritingPipe((const uint8_t *)dst.c_str());
// set the RX address of the TX node into a RX pipe
radio.openReadingPipe(1, (const uint8_t *)src.c_str());
// ...not that this matters for simple ping/ack
radio.stopListening(); // put radio in TX mode
clock_gettime(CLOCK_MONOTONIC_RAW, &startTimer); // start the timer
// bool report = radio.write(&payload, sizeof(float)); // transmit & save the report
bool report = radio.write("P", 1); // transmit & save the report
uint32_t timerEllapsed = getMicros(); // end the timer
// set the TX address of the RX node into the TX pipe
radio.openWritingPipe((const uint8_t *)dst.c_str());
// We need to modify the payload every time otherwise recipients
// will detect packets as 'duplicates' and silently ignore them
// (although they will still auto-ack them).
unsigned int r = rand();
snprintf(payload, sizeof(payload), "ping%08ud", r);
bool report = radio.write(payload, payloadsize);
if (report) {
// payload was delivered
payload += 0.01; // increment float payload
return true;
}
return false; // no reply received
@ -117,6 +70,8 @@ bool doPing(int ch, string src, string dst)
int main(int argc, char** argv)
{
srand(time(NULL)); // Initialization, should only be called once.
if (!radio.begin()) {
cout << "radio hardware is not responding!!" << endl;
return 0; // quit now
@ -136,13 +91,11 @@ int main(int argc, char** argv)
// TODO
// we probably want
// - 8-bit crc
// - dynamic payloads (check in rf logs)
// - what's the "primary mode"?
// - do we need/want "custom ack payloads"?
// - use isAckPayloadAvailable() once we've actually contacted an inverter successfully!
radio.printPrettyDetails();
//radio.printPrettyDetails();
// well-known valid DTU serial number
// just in case the inverter only responds to addresses
@ -174,154 +127,12 @@ int main(int argc, char** argv)
cout << " - ";
}
cout << " " << flush;
delay(20);
delay(10);
}
cout << endl;
}
radio.setChannel(76);
// to use different addresses on a pair of radios, we need a variable to
// uniquely identify which address this radio will use to transmit
bool radioNumber = 1; // 0 uses address[0] to transmit, 1 uses address[1] to transmit
// print example's name
cout << argv[0] << endl;
// Let these addresses be used for the pair
uint8_t address[2][6] = {"1Node", "2Node"};
// It is very helpful to think of an address as a path instead of as
// an identifying device destination
// Set the radioNumber via the terminal on startup
cout << "Which radio is this? Enter '0' or '1'. Defaults to '0' ";
string input;
getline(cin, input);
radioNumber = input.length() > 0 && (uint8_t)input[0] == 49;
// save on transmission time by setting the radio to only transmit the
// number of bytes we need to transmit a float
radio.setPayloadSize(sizeof(payload)); // float datatype occupies 4 bytes
// Set the PA Level low to try preventing power supply related problems
// because these examples are likely run with nodes in close proximity to
// each other.
radio.setPALevel(RF24_PA_MIN); // RF24_PA_MAX is default.
radio.setDataRate(RF24_250KBPS);
radio.printPrettyDetails();
// set the TX address of the RX node into the TX pipe
radio.openWritingPipe(address[radioNumber]); // always uses pipe 0
// set the RX address of the TX node into a RX pipe
radio.openReadingPipe(1, address[!radioNumber]); // using pipe 1
// For debugging info
// radio.printDetails(); // (smaller) function that prints raw register values
// radio.printPrettyDetails(); // (larger) function that prints human readable data
// ready to execute program now
setRole(); // calls master() or slave() based on user input
//radio.printPrettyDetails();
return 0;
}
/**
* set this node's role from stdin stream.
* this only considers the first char as input.
*/
void setRole() {
string input = "";
while (!input.length()) {
cout << "*** PRESS 'T' to begin transmitting to the other node\n";
cout << "*** PRESS 'R' to begin receiving from the other node\n";
cout << "*** PRESS 'Q' to exit" << endl;
getline(cin, input);
if (input.length() >= 1) {
if (input[0] == 'T' || input[0] == 't')
master();
else if (input[0] == 'R' || input[0] == 'r')
slave();
else if (input[0] == 'Q' || input[0] == 'q')
break;
else
cout << input[0] << " is an invalid input. Please try again." << endl;
}
input = ""; // stay in the while loop
} // while
} // setRole()
/**
* make this node act as the transmitter
*/
void master() {
radio.stopListening(); // put radio in TX mode
unsigned int failure = 0; // keep track of failures
while (failure < 60) {
clock_gettime(CLOCK_MONOTONIC_RAW, &startTimer); // start the timer
bool report = radio.write(&payload, sizeof(float)); // transmit & save the report
uint32_t timerEllapsed = getMicros(); // end the timer
if (report) {
// payload was delivered
cout << "Transmission successful! Time to transmit = ";
cout << timerEllapsed; // print the timer result
cout << " us. Sent: " << payload; // print payload sent
cout << " hex: " << hex << (unsigned int)b[0] << " " << (unsigned int)b[1] << " "
<< (unsigned int)b[2] << " " << (unsigned int)b[3] << " " <<endl;
payload += 0.01; // increment float payload
} else {
// payload was not delivered
cout << "Transmission failed or timed out" << endl;
failure++;
}
// to make this example readable in the terminal
delay(1000); // slow transmissions down by 1 second
}
cout << failure << " failures detected. Leaving TX role." << endl;
}
/**
* make this node act as the receiver
*/
void slave() {
radio.startListening(); // put radio in RX mode
time_t startTimer = time(nullptr); // start a timer
while (time(nullptr) - startTimer < 60) { // use 6 second timeout
uint8_t pipe;
if (radio.available(&pipe)) { // is there a payload? get the pipe number that recieved it
uint8_t bytes = radio.getPayloadSize(); // get the size of the payload
radio.read(&payload, bytes); // fetch payload from FIFO
cout << "Received " << (unsigned int)bytes; // print the size of the payload
cout << " bytes on pipe " << (unsigned int)pipe; // print the pipe number
cout << ": " << payload; // print the payload's value
cout << " hex: " << hex << (unsigned int)b[0] << " " << (unsigned int)b[1] << " "
<< (unsigned int)b[2] << " " << (unsigned int)b[3] << " " <<endl;
startTimer = time(nullptr); // reset timer
}
}
cout << "Nothing received in 6 seconds. Leaving RX role." << endl;
radio.stopListening();
}
/**
* Calculate the ellapsed time in microseconds
*/
uint32_t getMicros() {
// this function assumes that the timer was started using
// `clock_gettime(CLOCK_MONOTONIC_RAW, &startTimer);`
clock_gettime(CLOCK_MONOTONIC_RAW, &endTimer);
uint32_t seconds = endTimer.tv_sec - startTimer.tv_sec;
uint32_t useconds = (endTimer.tv_nsec - startTimer.tv_nsec) / 1000;
return ((seconds) * 1000 + useconds) + 0.5;
}

Write Preview
Loading…
Cancel
Save