RadioLibSmol/src/Module.cpp
2023-04-12 18:44:12 +02:00

821 lines
21 KiB
C++

#include "Module.h"
#if defined(RADIOLIB_BUILD_ARDUINO)
// we need this to emulate tone() on mbed Arduino boards
#if defined(RADIOLIB_MBED_TONE_OVERRIDE)
#include "mbed.h"
mbed::PwmOut *pwmPin = NULL;
#endif
Module::Module(RADIOLIB_PIN_TYPE cs, RADIOLIB_PIN_TYPE irq, RADIOLIB_PIN_TYPE rst, RADIOLIB_PIN_TYPE gpio):
_cs(cs),
_irq(irq),
_rst(rst),
_gpio(gpio)
{
_spi = &RADIOLIB_DEFAULT_SPI;
_initInterface = true;
// this is Arduino build, pre-set callbacks
setCb_pinMode(::pinMode);
setCb_digitalRead(::digitalRead);
setCb_digitalWrite(::digitalWrite);
#if !defined(RADIOLIB_TONE_UNSUPPORTED)
setCb_tone(::tone);
setCb_noTone(::noTone);
#endif
setCb_attachInterrupt(::attachInterrupt);
setCb_detachInterrupt(::detachInterrupt);
#if !defined(RADIOLIB_YIELD_UNSUPPORTED)
setCb_yield(::yield);
#endif
setCb_delay(::delay);
setCb_delayMicroseconds(::delayMicroseconds);
setCb_millis(::millis);
setCb_micros(::micros);
setCb_pulseIn(::pulseIn);
setCb_SPIbegin(&Module::SPIbegin);
setCb_SPIbeginTransaction(&Module::SPIbeginTransaction);
setCb_SPItransfer(&Module::SPItransfer);
setCb_SPIendTransaction(&Module::SPIendTransaction);
setCb_SPIend(&Module::SPIend);
}
Module::Module(RADIOLIB_PIN_TYPE cs, RADIOLIB_PIN_TYPE irq, RADIOLIB_PIN_TYPE rst, RADIOLIB_PIN_TYPE gpio, SPIClass& spi, SPISettings spiSettings):
_cs(cs),
_irq(irq),
_rst(rst),
_gpio(gpio),
_spiSettings(spiSettings)
{
_spi = &spi;
_initInterface = false;
// this is Arduino build, pre-set callbacks
setCb_pinMode(::pinMode);
setCb_digitalRead(::digitalRead);
setCb_digitalWrite(::digitalWrite);
#if !defined(RADIOLIB_TONE_UNSUPPORTED)
setCb_tone(::tone);
setCb_noTone(::noTone);
#endif
setCb_attachInterrupt(::attachInterrupt);
setCb_detachInterrupt(::detachInterrupt);
#if !defined(RADIOLIB_YIELD_UNSUPPORTED)
setCb_yield(::yield);
#endif
setCb_delay(::delay);
setCb_delayMicroseconds(::delayMicroseconds);
setCb_millis(::millis);
setCb_micros(::micros);
setCb_pulseIn(::pulseIn);
setCb_SPIbegin(&Module::SPIbegin);
setCb_SPIbeginTransaction(&Module::SPIbeginTransaction);
setCb_SPItransfer(&Module::SPItransfer);
setCb_SPIendTransaction(&Module::SPIendTransaction);
setCb_SPIend(&Module::SPIend);
}
#else
Module::Module(RADIOLIB_PIN_TYPE cs, RADIOLIB_PIN_TYPE irq, RADIOLIB_PIN_TYPE rst, RADIOLIB_PIN_TYPE gpio):
_cs(cs),
_irq(irq),
_rst(rst),
_gpio(gpio)
{
// not an Arduino build, it's up to the user to set all callbacks
}
#endif
Module::Module(const Module& mod) {
*this = mod;
}
Module& Module::operator=(const Module& mod) {
this->SPIreadCommand = mod.SPIreadCommand;
this->SPIwriteCommand = mod.SPIwriteCommand;
this->_cs = mod.getCs();
this->_irq = mod.getIrq();
this->_rst = mod.getRst();
this->_gpio = mod.getGpio();
return(*this);
}
void Module::init() {
this->pinMode(_cs, OUTPUT);
this->digitalWrite(_cs, HIGH);
#if defined(RADIOLIB_BUILD_ARDUINO)
if(_initInterface) {
(this->*cb_SPIbegin)();
}
#endif
}
void Module::term() {
// stop hardware interfaces (if they were initialized by the library)
#if defined(RADIOLIB_BUILD_ARDUINO)
if(!_initInterface) {
return;
}
if(_spi != nullptr) {
this->SPIend();
}
#endif
}
int16_t Module::SPIgetRegValue(uint16_t reg, uint8_t msb, uint8_t lsb) {
if((msb > 7) || (lsb > 7) || (lsb > msb)) {
return(RADIOLIB_ERR_INVALID_BIT_RANGE);
}
uint8_t rawValue = SPIreadRegister(reg);
uint8_t maskedValue = rawValue & ((0b11111111 << lsb) & (0b11111111 >> (7 - msb)));
return(maskedValue);
}
int16_t Module::SPIsetRegValue(uint16_t reg, uint8_t value, uint8_t msb, uint8_t lsb, uint8_t checkInterval, uint8_t checkMask) {
if((msb > 7) || (lsb > 7) || (lsb > msb)) {
return(RADIOLIB_ERR_INVALID_BIT_RANGE);
}
uint8_t currentValue = SPIreadRegister(reg);
uint8_t mask = ~((0b11111111 << (msb + 1)) | (0b11111111 >> (8 - lsb)));
uint8_t newValue = (currentValue & ~mask) | (value & mask);
SPIwriteRegister(reg, newValue);
#if defined(RADIOLIB_SPI_PARANOID)
// check register value each millisecond until check interval is reached
// some registers need a bit of time to process the change (e.g. SX127X_REG_OP_MODE)
uint32_t start = this->micros();
uint8_t readValue = 0x00;
while(this->micros() - start < (checkInterval * 1000)) {
readValue = SPIreadRegister(reg);
if((readValue & checkMask) == (newValue & checkMask)) {
// check passed, we can stop the loop
return(RADIOLIB_ERR_NONE);
}
}
// check failed, print debug info
RADIOLIB_DEBUG_PRINTLN();
RADIOLIB_DEBUG_PRINTLN("address:\t0x%X", reg);
RADIOLIB_DEBUG_PRINTLN("bits:\t\t%d %d", msb, lsb);
RADIOLIB_DEBUG_PRINT("value:\t\t0x%X", value);
RADIOLIB_DEBUG_PRINT("current:\t0x%X", currentValue);
RADIOLIB_DEBUG_PRINT("mask:\t\t0x%X", mask);
RADIOLIB_DEBUG_PRINT("new:\t\t0x%X", newValue);
RADIOLIB_DEBUG_PRINTLN("read:\t\t0x%X", readValue);
return(RADIOLIB_ERR_SPI_WRITE_FAILED);
#else
return(RADIOLIB_ERR_NONE);
#endif
}
void Module::SPIreadRegisterBurst(uint16_t reg, size_t numBytes, uint8_t* inBytes) {
if(!SPIstreamType) {
SPItransfer(SPIreadCommand, reg, NULL, inBytes, numBytes);
} else {
uint8_t cmd[] = { SPIreadCommand, (uint8_t)((reg >> 8) & 0xFF), (uint8_t)(reg & 0xFF) };
SPItransferStream(cmd, 3, false, NULL, inBytes, numBytes, true, 5000);
}
}
uint8_t Module::SPIreadRegister(uint16_t reg) {
uint8_t resp = 0;
if(!SPIstreamType) {
SPItransfer(SPIreadCommand, reg, NULL, &resp, 1);
} else {
uint8_t cmd[] = { SPIreadCommand, (uint8_t)((reg >> 8) & 0xFF), (uint8_t)(reg & 0xFF) };
SPItransferStream(cmd, 3, false, NULL, &resp, 1, true, 5000);
}
return(resp);
}
void Module::SPIwriteRegisterBurst(uint16_t reg, uint8_t* data, size_t numBytes) {
if(!SPIstreamType) {
SPItransfer(SPIwriteCommand, reg, data, NULL, numBytes);
} else {
uint8_t cmd[] = { SPIwriteCommand, (uint8_t)((reg >> 8) & 0xFF), (uint8_t)(reg & 0xFF) };
SPItransferStream(cmd, 3, true, data, NULL, numBytes, true, 5000);
}
}
void Module::SPIwriteRegister(uint16_t reg, uint8_t data) {
if(!SPIstreamType) {
SPItransfer(SPIwriteCommand, reg, &data, NULL, 1);
} else {
uint8_t cmd[] = { SPIwriteCommand, (uint8_t)((reg >> 8) & 0xFF), (uint8_t)(reg & 0xFF) };
SPItransferStream(cmd, 3, true, &data, NULL, 1, true, 5000);
}
}
void Module::SPItransfer(uint8_t cmd, uint16_t reg, uint8_t* dataOut, uint8_t* dataIn, size_t numBytes) {
// start SPI transaction
this->beginTransaction();
// pull CS low
this->digitalWrite(_cs, LOW);
// send SPI register address with access command
if(this->SPIaddrWidth <= 8) {
this->transfer(reg | cmd);
} else {
this->transfer((reg >> 8) | cmd);
this->transfer(reg & 0xFF);
}
#if defined(RADIOLIB_VERBOSE)
if(cmd == SPIwriteCommand) {
RADIOLIB_VERBOSE_PRINT("W");
} else if(cmd == SPIreadCommand) {
RADIOLIB_VERBOSE_PRINT("R");
}
RADIOLIB_VERBOSE_PRINT("\t%X\t", reg);
#endif
// send data or get response
if(cmd == SPIwriteCommand) {
if(dataOut != NULL) {
for(size_t n = 0; n < numBytes; n++) {
this->transfer(dataOut[n]);
RADIOLIB_VERBOSE_PRINT("%X\t", dataOut[n]);
}
}
} else if (cmd == SPIreadCommand) {
if(dataIn != NULL) {
for(size_t n = 0; n < numBytes; n++) {
dataIn[n] = this->transfer(0x00);
RADIOLIB_VERBOSE_PRINT("%X\t", dataIn[n]);
}
}
}
RADIOLIB_VERBOSE_PRINTLN();
// release CS
this->digitalWrite(_cs, HIGH);
// end SPI transaction
this->endTransaction();
}
int16_t Module::SPIreadStream(uint8_t cmd, uint8_t* data, size_t numBytes, bool waitForGpio, bool verify) {
return(this->SPIreadStream(&cmd, 1, data, numBytes, waitForGpio, verify));
}
int16_t Module::SPIreadStream(uint8_t* cmd, uint8_t cmdLen, uint8_t* data, size_t numBytes, bool waitForGpio, bool verify) {
// send the command
int16_t state = this->SPItransferStream(cmd, cmdLen, false, NULL, data, numBytes, waitForGpio, 5000);
RADIOLIB_ASSERT(state);
// check the status
if(verify) {
state = this->SPIcheckStream();
}
return(state);
}
int16_t Module::SPIwriteStream(uint8_t cmd, uint8_t* data, size_t numBytes, bool waitForGpio, bool verify) {
return(this->SPIwriteStream(&cmd, 1, data, numBytes, waitForGpio, verify));
}
int16_t Module::SPIwriteStream(uint8_t* cmd, uint8_t cmdLen, uint8_t* data, size_t numBytes, bool waitForGpio, bool verify) {
// send the command
int16_t state = this->SPItransferStream(cmd, cmdLen, true, data, NULL, numBytes, waitForGpio, 5000);
RADIOLIB_ASSERT(state);
// check the status
if(verify) {
state = this->SPIcheckStream();
}
return(state);
}
int16_t Module::SPIcheckStream() {
int16_t state = RADIOLIB_ERR_NONE;
#if defined(RADIOLIB_SPI_PARANOID)
// get the status
uint8_t spiStatus = 0;
uint8_t cmd = this->SPIstatusCommand;
state = this->SPItransferStream(&cmd, 1, false, NULL, &spiStatus, 1, true, 5000);
RADIOLIB_ASSERT(state);
// translate to RadioLib status code
if(this->SPIparseStatusCb != nullptr) {
this->SPIstreamError = this->SPIparseStatusCb(spiStatus);
}
#endif
return(state);
}
int16_t Module::SPItransferStream(uint8_t* cmd, uint8_t cmdLen, bool write, uint8_t* dataOut, uint8_t* dataIn, size_t numBytes, bool waitForGpio, uint32_t timeout) {
#if defined(RADIOLIB_VERBOSE)
uint8_t debugBuff[RADIOLIB_STATIC_ARRAY_SIZE];
#endif
// ensure GPIO is low
uint32_t start = this->millis();
while(this->digitalRead(this->getGpio())) {
this->yield();
if(this->millis() - start >= timeout) {
this->digitalWrite(this->getCs(), HIGH);
return(RADIOLIB_ERR_SPI_CMD_TIMEOUT);
}
}
// pull NSS low
this->digitalWrite(this->getCs(), LOW);
// start transfer
this->beginTransaction();
// send command byte(s)
for(uint8_t n = 0; n < cmdLen; n++) {
this->transfer(cmd[n]);
}
// variable to save error during SPI transfer
int16_t state = RADIOLIB_ERR_NONE;
// send/receive all bytes
if(write) {
for(size_t n = 0; n < numBytes; n++) {
// send byte
uint8_t in = this->transfer(dataOut[n]);
#if defined(RADIOLIB_VERBOSE)
debugBuff[n] = in;
#endif
// check status
if(this->SPIparseStatusCb != nullptr) {
state = this->SPIparseStatusCb(in);
}
}
} else {
// skip the first byte for read-type commands (status-only)
uint8_t in = this->transfer(this->SPInopCommand);
#if defined(RADIOLIB_VERBOSE)
debugBuff[0] = in;
#endif
// check status
if(this->SPIparseStatusCb != nullptr) {
state = this->SPIparseStatusCb(in);
} else {
state = RADIOLIB_ERR_NONE;
}
// read the data
if(state == RADIOLIB_ERR_NONE) {
for(size_t n = 0; n < numBytes; n++) {
dataIn[n] = this->transfer(this->SPInopCommand);
}
}
}
// stop transfer
this->endTransaction();
this->digitalWrite(this->getCs(), HIGH);
// wait for GPIO to go high and then low
if(waitForGpio) {
this->delayMicroseconds(1);
uint32_t start = this->millis();
while(this->digitalRead(this->getGpio())) {
this->yield();
if(this->millis() - start >= timeout) {
state = RADIOLIB_ERR_SPI_CMD_TIMEOUT;
break;
}
}
}
// print debug output
#if defined(RADIOLIB_VERBOSE)
// print command byte(s)
RADIOLIB_VERBOSE_PRINT("CMD\t");
for(uint8_t n = 0; n < cmdLen; n++) {
RADIOLIB_VERBOSE_PRINT("%X\t", cmd[n]);
}
RADIOLIB_VERBOSE_PRINTLN();
// print data bytes
RADIOLIB_VERBOSE_PRINT("DAT");
if(write) {
RADIOLIB_VERBOSE_PRINT("W\t");
for(size_t n = 0; n < numBytes; n++) {
RADIOLIB_VERBOSE_PRINT("%X\t%X\t", dataOut[n], debugBuff[n]);
}
RADIOLIB_VERBOSE_PRINTLN();
} else {
RADIOLIB_VERBOSE_PRINT("R\t%X\t%X\t", this->SPInopCommand, debugBuff[0]);
for(size_t n = 0; n < numBytes; n++) {
RADIOLIB_VERBOSE_PRINT("%X\t%X\t", this->SPInopCommand, dataIn[n]);
}
RADIOLIB_VERBOSE_PRINTLN();
}
RADIOLIB_VERBOSE_PRINTLN();
#endif
return(state);
}
void Module::waitForMicroseconds(uint32_t start, uint32_t len) {
#if defined(RADIOLIB_INTERRUPT_TIMING)
(void)start;
if((this->TimerSetupCb != nullptr) && (len != this->_prevTimingLen)) {
_prevTimingLen = len;
this->TimerSetupCb(len);
}
this->TimerFlag = false;
while(!this->TimerFlag) {
this->yield();
}
#else
while(this->micros() - start < len) {
this->yield();
}
#endif
}
void Module::pinMode(RADIOLIB_PIN_TYPE pin, RADIOLIB_PIN_MODE mode) {
if((pin == RADIOLIB_NC) || (cb_pinMode == nullptr)) {
return;
}
cb_pinMode(pin, mode);
}
void Module::digitalWrite(RADIOLIB_PIN_TYPE pin, RADIOLIB_PIN_STATUS value) {
if((pin == RADIOLIB_NC) || (cb_digitalWrite == nullptr)) {
return;
}
cb_digitalWrite(pin, value);
}
RADIOLIB_PIN_STATUS Module::digitalRead(RADIOLIB_PIN_TYPE pin) {
if((pin == RADIOLIB_NC) || (cb_digitalRead == nullptr)) {
return((RADIOLIB_PIN_STATUS)0);
}
return(cb_digitalRead(pin));
}
#if defined(ESP32)
// we need to cache the previous tone value for emulation on ESP32
int32_t prev = -1;
#endif
void Module::tone(RADIOLIB_PIN_TYPE pin, uint16_t value, uint32_t duration) {
#if !defined(RADIOLIB_TONE_UNSUPPORTED)
if((pin == RADIOLIB_NC) || (cb_tone == nullptr)) {
return;
}
cb_tone(pin, value, duration);
#else
if(pin == RADIOLIB_NC) {
return;
}
#if defined(ESP32)
// ESP32 tone() emulation
(void)duration;
if(prev == -1) {
ledcAttachPin(pin, RADIOLIB_TONE_ESP32_CHANNEL);
}
if(prev != value) {
ledcWriteTone(RADIOLIB_TONE_ESP32_CHANNEL, value);
}
prev = value;
#elif defined(RADIOLIB_MBED_TONE_OVERRIDE)
// better tone for mbed OS boards
(void)duration;
if(!pwmPin) {
pwmPin = new mbed::PwmOut(digitalPinToPinName(pin));
}
pwmPin->period(1.0 / value);
pwmPin->write(0.5);
#else
(void)value;
(void)duration;
#endif
#endif
}
void Module::noTone(RADIOLIB_PIN_TYPE pin) {
#if !defined(RADIOLIB_TONE_UNSUPPORTED)
if((pin == RADIOLIB_NC) || (cb_noTone == nullptr)) {
return;
}
#if defined(ARDUINO_ARCH_STM32)
cb_noTone(pin, false);
#else
cb_noTone(pin);
#endif
#else
if(pin == RADIOLIB_NC) {
return;
}
#if defined(ESP32)
// ESP32 tone() emulation
ledcDetachPin(pin);
ledcWrite(RADIOLIB_TONE_ESP32_CHANNEL, 0);
prev = -1;
#elif defined(RADIOLIB_MBED_TONE_OVERRIDE)
// better tone for mbed OS boards
(void)pin;
pwmPin->suspend();
#endif
#endif
}
void Module::attachInterrupt(RADIOLIB_PIN_TYPE interruptNum, void (*userFunc)(void), RADIOLIB_INTERRUPT_STATUS mode) {
if((interruptNum == RADIOLIB_NC) || (cb_attachInterrupt == nullptr)) {
return;
}
cb_attachInterrupt(interruptNum, userFunc, mode);
}
void Module::detachInterrupt(RADIOLIB_PIN_TYPE interruptNum) {
if((interruptNum == RADIOLIB_NC) || (cb_detachInterrupt == nullptr)) {
return;
}
cb_detachInterrupt(interruptNum);
}
void Module::yield() {
if(cb_yield == nullptr) {
return;
}
#if !defined(RADIOLIB_YIELD_UNSUPPORTED)
cb_yield();
#endif
}
void Module::delay(uint32_t ms) {
if(cb_delay == nullptr) {
return;
}
cb_delay(ms);
}
void Module::delayMicroseconds(uint32_t us) {
if(cb_delayMicroseconds == nullptr) {
return;
}
cb_delayMicroseconds(us);
}
uint32_t Module::millis() {
if(cb_millis == nullptr) {
return(0);
}
return(cb_millis());
}
uint32_t Module::micros() {
if(cb_micros == nullptr) {
return(0);
}
return(cb_micros());
}
uint32_t Module::pulseIn(RADIOLIB_PIN_TYPE pin, RADIOLIB_PIN_STATUS state, uint32_t timeout) {
if(cb_pulseIn == nullptr) {
return(0);
}
return(cb_pulseIn(pin, state, timeout));
}
void Module::begin() {
if(cb_SPIbegin == nullptr) {
return;
}
#if defined(RADIOLIB_BUILD_ARDUINO)
(this->*cb_SPIbegin)();
#else
cb_SPIbegin();
#endif
}
void Module::beginTransaction() {
if(cb_SPIbeginTransaction == nullptr) {
return;
}
#if defined(RADIOLIB_BUILD_ARDUINO)
(this->*cb_SPIbeginTransaction)();
#else
cb_SPIbeginTransaction();
#endif
}
uint8_t Module::transfer(uint8_t b) {
if(cb_SPItransfer == nullptr) {
return(0xFF);
}
#if defined(RADIOLIB_BUILD_ARDUINO)
return((this->*cb_SPItransfer)(b));
#else
return(cb_SPItransfer(b));
#endif
}
void Module::endTransaction() {
if(cb_SPIendTransaction == nullptr) {
return;
}
#if defined(RADIOLIB_BUILD_ARDUINO)
(this->*cb_SPIendTransaction)();
#else
cb_SPIendTransaction();
#endif
}
void Module::end() {
if(cb_SPIend == nullptr) {
return;
}
#if defined(RADIOLIB_BUILD_ARDUINO)
(this->*cb_SPIend)();
#else
cb_SPIend();
#endif
}
#if defined(RADIOLIB_BUILD_ARDUINO)
void Module::SPIbegin() {
_spi->begin();
}
void Module::SPIbeginTransaction() {
_spi->beginTransaction(_spiSettings);
}
uint8_t Module::SPItransfer(uint8_t b) {
return(_spi->transfer(b));
}
void Module::SPIendTransaction() {
_spi->endTransaction();
}
void Module::SPIend() {
_spi->end();
}
#endif
uint8_t Module::flipBits(uint8_t b) {
b = (b & 0xF0) >> 4 | (b & 0x0F) << 4;
b = (b & 0xCC) >> 2 | (b & 0x33) << 2;
b = (b & 0xAA) >> 1 | (b & 0x55) << 1;
return b;
}
uint16_t Module::flipBits16(uint16_t i) {
i = (i & 0xFF00) >> 8 | (i & 0x00FF) << 8;
i = (i & 0xF0F0) >> 4 | (i & 0x0F0F) << 4;
i = (i & 0xCCCC) >> 2 | (i & 0x3333) << 2;
i = (i & 0xAAAA) >> 1 | (i & 0x5555) << 1;
return i;
}
void Module::hexdump(uint8_t* data, size_t len, uint32_t offset, uint8_t width, bool be) {
size_t rem_len = len;
for(size_t i = 0; i < len; i+=16) {
char str[80];
sprintf(str, "%07" PRIx32 " ", i+offset);
size_t line_len = 16;
if(rem_len < line_len) {
line_len = rem_len;
}
for(size_t j = 0; j < line_len; j+=width) {
if(width > 1) {
int m = 0;
int step = width/2;
if(be) {
step *= -1;
}
for(int32_t k = width - 1; k >= -width + 1; k+=step) {
sprintf(&str[8 + (j+m)*3], "%02x ", data[i+j+k+m]);
m++;
}
} else {
sprintf(&str[8 + (j)*3], "%02x ", data[i+j]);
}
}
for(size_t j = line_len; j < 16; j++) {
sprintf(&str[8 + j*3], " ");
}
str[56] = '|';
str[57] = ' ';
for(size_t j = 0; j < line_len; j++) {
char c = data[i+j];
if((c < ' ') || (c > '~')) {
c = '.';
}
sprintf(&str[58 + j], "%c", c);
}
for(size_t j = line_len; j < 16; j++) {
sprintf(&str[58 + j], " ");
}
RADIOLIB_DEBUG_PRINT(str);
RADIOLIB_DEBUG_PRINTLN();
rem_len -= 16;
}
}
void Module::regdump(uint16_t start, size_t len) {
#if defined(RADIOLIB_STATIC_ONLY)
uint8_t buff[RADIOLIB_STATIC_ARRAY_SIZE];
#else
uint8_t* buff = new uint8_t[len];
#endif
SPIreadRegisterBurst(start, len, buff);
hexdump(buff, len, start);
#if !defined(RADIOLIB_STATIC_ONLY)
delete[] buff;
#endif
}
#if defined(RADIOLIB_DEBUG) and defined(RADIOLIB_BUILD_ARDUINO)
// https://github.com/esp8266/Arduino/blob/65579d29081cb8501e4d7f786747bf12e7b37da2/cores/esp8266/Print.cpp#L50
size_t Module::serialPrintf(const char* format, ...) {
va_list arg;
va_start(arg, format);
char temp[64];
char* buffer = temp;
size_t len = vsnprintf(temp, sizeof(temp), format, arg);
va_end(arg);
if (len > sizeof(temp) - 1) {
buffer = new char[len + 1];
if (!buffer) {
return 0;
}
va_start(arg, format);
vsnprintf(buffer, len + 1, format, arg);
va_end(arg);
}
len = RADIOLIB_DEBUG_PORT.write((const uint8_t*)buffer, len);
if (buffer != temp) {
delete[] buffer;
}
return len;
}
#endif
void Module::setRfSwitchPins(RADIOLIB_PIN_TYPE rxEn, RADIOLIB_PIN_TYPE txEn) {
// This can be on the stack, setRfSwitchTable copies the contents
const RADIOLIB_PIN_TYPE pins[] = {
rxEn, txEn, RADIOLIB_NC,
};
// This must be static, since setRfSwitchTable stores a reference.
static constexpr RfSwitchMode_t table[] = {
{MODE_IDLE, {LOW, LOW}},
{MODE_RX, {HIGH, LOW}},
{MODE_TX, {LOW, HIGH}},
END_OF_MODE_TABLE,
};
setRfSwitchTable(pins, table);
}
void Module::setRfSwitchTable(const RADIOLIB_PIN_TYPE (&pins)[3], const RfSwitchMode_t table[]) {
memcpy(_rfSwitchPins, pins, sizeof(_rfSwitchPins));
_rfSwitchTable = table;
for(size_t i = 0; i < RFSWITCH_MAX_PINS; i++)
this->pinMode(pins[i], OUTPUT);
}
const Module::RfSwitchMode_t *Module::findRfSwitchMode(uint8_t mode) const {
const RfSwitchMode_t *row = _rfSwitchTable;
while (row && row->mode != MODE_END_OF_TABLE) {
if (row->mode == mode)
return row;
++row;
}
return nullptr;
}
void Module::setRfSwitchState(uint8_t mode) {
const RfSwitchMode_t *row = findRfSwitchMode(mode);
if(!row) {
// RF switch control is disabled or does not have this mode
return;
}
// set pins
const RADIOLIB_PIN_STATUS *value = &row->values[0];
for(size_t i = 0; i < RFSWITCH_MAX_PINS; i++) {
RADIOLIB_PIN_TYPE pin = _rfSwitchPins[i];
if (pin != RADIOLIB_NC)
this->digitalWrite(pin, *value);
++value;
}
}