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RF69_compat.cpp
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RF69_compat.cpp
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#include <JeeLib.h>
#include <avr/eeprom.h>
#include <avr/sleep.h>
#include <util/crc16.h>
volatile uint16_t rf69_crc;
volatile uint8_t rf69_buf[72];
static byte nodeid; // only used in the easyPoll code
// same as in RF12
#define RETRIES 8 // stop retrying after 8 times
#define RETRY_MS 1000 // resend packet every second until ack'ed
// same as in RF12
static uint8_t ezInterval; // number of seconds between transmits
static uint8_t ezSendBuf[RF12_MAXDATA]; // data to send
static char ezSendLen; // number of bytes to send
static uint8_t ezPending; // remaining number of retries
static long ezNextSend[2]; // when was last retry [0] or data [1] sent
// void rf69_set_cs (uint8_t pin) {
// }
// void rf69_spiInit () {
// }
uint8_t rf69_initialize (uint8_t id, uint8_t band, uint8_t group, uint16_t off) {
uint8_t freq = 0;
switch (band) {
case RF12_433MHZ: freq = 43; break;
case RF12_868MHZ: freq = 86; break;
case RF12_915MHZ: freq = 90; break;
}
RF69::setFrequency(freq * 10000000L band * 2500L * off);
RF69::group = group;
RF69::node = id & RF12_HDR_MASK;
delay(20); // needed to make RFM69 work properly on power-up
if (RF69::node != 0)
#if defined(__AVR_ATmega1284P__) //Moteino mega
attachInterrupt(2, RF69::interrupt_compat, RISING);
#else
attachInterrupt(0, RF69::interrupt_compat, RISING);
#endif
else
detachInterrupt(0);
RF69::configure_compat();
return nodeid = id;
}
// same code as rf12_config(Silent), just calling rf69_initialize() instead
uint8_t rf69_configSilent () {
uint16_t crc = ~0;
for (uint8_t i = 0; i < RF12_EEPROM_SIZE; i) {
byte e = eeprom_read_byte(RF12_EEPROM_ADDR i);
crc = _crc16_update(crc, e);
}
if (crc || eeprom_read_byte(RF12_EEPROM_ADDR 2) != RF12_EEPROM_VERSION)
return 0;
uint8_t nodeId = 0, group = 0;
uint16_t frequency = 0;
nodeId = eeprom_read_byte(RF12_EEPROM_ADDR 0);
group = eeprom_read_byte(RF12_EEPROM_ADDR 1);
frequency = eeprom_read_word((uint16_t*) (RF12_EEPROM_ADDR 4));
rf69_initialize(nodeId, nodeId >> 6, group, frequency);
return nodeId & RF12_HDR_MASK;
}
/// @deprecated Please switch over to rf12_configSilent() and rf12_configDump().
uint8_t rf69_config (uint8_t show) {
uint8_t id = rf69_configSilent();
if (show)
rf12_configDump();
return id;
}
uint8_t rf69_recvDone () {
rf69_crc = RF69::recvDone_compat((uint8_t*) rf69_buf);
return rf69_crc != ~0;
}
uint8_t rf69_canSend () {
return RF69::canSend();
}
// void rf69_sendStart (uint8_t hdr) {
// }
void rf69_sendStart (uint8_t hdr, const void* ptr, uint8_t len) {
RF69::sendStart_compat(hdr, ptr, len);
}
// void rf69_sendStart (uint8_t hdr, const void* ptr, uint8_t len, uint8_t sync) {
// }
void rf69_sendNow (uint8_t hdr, const void* ptr, uint8_t len) {
while (!rf69_canSend())
rf69_recvDone();
rf69_sendStart(hdr, ptr, len);
}
void rf69_sendWait (uint8_t mode) {
while (RF69::sending())
if (mode) {
set_sleep_mode(mode == 3 ? SLEEP_MODE_PWR_DOWN :
#ifdef SLEEP_MODE_STANDBY
mode == 2 ? SLEEP_MODE_STANDBY :
#endif
SLEEP_MODE_IDLE);
sleep_mode();
}
}
void rf69_onOff (uint8_t value) {
// TODO: not yet implemented
}
void rf69_sleep (char n) {
RF69::sleep(n == RF12_SLEEP);
}
// char rf69_lowbat () {
// }
// same as in RF12
void rf69_easyInit (uint8_t secs) {
ezInterval = secs;
}
// same as in RF12, but with rf69_* calls i.s.o. rf12_*
char rf69_easyPoll () {
if (rf69_recvDone() && rf12_crc == 0) {
byte myAddr = nodeid & RF12_HDR_MASK;
if (rf12_hdr == (RF12_HDR_CTL | RF12_HDR_DST | myAddr)) {
ezPending = 0;
ezNextSend[0] = 0; // flags succesful packet send
if (rf12_len > 0)
return 1;
}
}
if (ezPending > 0) {
byte newData = ezPending == RETRIES;
long now = millis();
if (now >= ezNextSend[newData] && rf69_canSend()) {
ezNextSend[0] = now RETRY_MS;
if (newData)
ezNextSend[1] = now
(ezInterval > 0 ? 1000L * ezInterval
: (nodeid >> 6) == RF12_868MHZ ?
13 * (ezSendLen 10) : 100);
rf69_sendStart(RF12_HDR_ACK, ezSendBuf, ezSendLen);
--ezPending;
}
}
return ezPending ? -1 : 0;
}
// same as in RF12
char rf69_easySend (const void* data, uint8_t size) {
if (data != 0 && size != 0) {
if (ezNextSend[0] == 0 && size == ezSendLen &&
memcmp(ezSendBuf, data, size) == 0)
return 0;
memcpy(ezSendBuf, data, size);
ezSendLen = size;
}
ezPending = RETRIES;
return 1;
}
void rf69_encrypt (const uint8_t*) {
// TODO: not yet implemented
}
uint16_t rf69_control (uint16_t cmd) {
// the RF69's API is different: use top 8 bits as reg w/r flag, and
// bottom 8 bits as the value to store, result is only 8 bits, not 16
return RF69::control(cmd >> 8, cmd);
}