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RF12.cpp
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/// @file
/// RFM12B driver implementation
// 2009-02-09 <[email protected]> http://opensource.org/licenses/mit-license.php
#if ARDUINO >= 100
#include <Arduino.h> // Arduino 1.0
#else
#include <WProgram.h> // Arduino 0022
#endif
#include "RF12.h"
#if JEELIB_SPI1 //Defined in RF12.h. Set to true if using SPI1. Set false if SPI or SPI0 (default).
#if defined (MCU_STM32F103C8) || defined(MCU_STM32F103CB) || defined(MCU_STM32F103CBT6) || defined(MCU_STM32F103RB)
#include<SPI.h>
#if defined(RF69_COMPAT) //if using radio RFM69CW, do nothing. To prevent compiler errors
//SPIClass declaration in file RF69_avr1.h
static uint8_t cs_pin = SS1; // chip select pin
#else
static uint8_t cs_pin = 31; // 31 = PB12 = chip select pin
SPIClass SPI_2 (2);
#endif
#elif defined(STM32F103xB) //Maple Mini
#include<SPI.h>
#if defined(RF69_COMPAT) //if using radio RFM69CW, do nothing. To prevent compiler errors
//SPIClass declaration in file RF69_avr1.h
static uint8_t cs_pin = SS1; // chip select pin
#else
//#include <EEPROM.h>
SPIClass SPI_M2(28, 29, 30 ); //mosi, miso, sclk ; //SPIClass declaration for Maple Mini
static uint8_t cs_pin = 31; // 31 = PB12 = chip select pin
#endif
#elif defined (ESP32)
#include<SPI.h>
#if defined(RF69_COMPAT) //if using radio RFM69CW
// do nothing. To prevent compiler errors
#else
SPIClass * hspi = NULL;
#endif
static uint8_t cs_pin = 15; // set your SPI1 chip select pin
#else
#include<SPI1.h>
static uint8_t cs_pin = SS1; // SPI1 chip select pin
#endif
#else //SPI
#include<SPI.h>
#if defined(HALLARD)
static uint8_t cs_pin = 16; // set your SPI1 chip select pin for Hallards module
#else
static uint8_t cs_pin = SS; // SPI chip select pin
#endif
#endif
#if defined (__LGT8FX8P__)
#include <util/crc16.h>
//#include <avr/eeprom.h>
#include <avr/pgmspace.h>
#include <util/parity.h>
#include <avr/sleep.h>
#include <EEPROM.h>
#define RFM_IRQ 2 // Arduino interrupt pin number used by radio (RFM12b/RFM69CW)
#elif defined(ARDUINO_ARCH_AVR) || defined(ARDUINO_ARCH_MEGAAVR)
#include <avr/io.h>
#include <util/crc16.h>
#include <avr/eeprom.h>
#include <avr/sleep.h>
#define RFM_IRQ 2 // Arduino interrupt pin number used by radio (RFM12b/RFM69CW)
#elif defined (ESP8266) || defined (ESP8266_GENERIC) || defined (ESP32)
#if defined (ESP32)
#if JEELIB_SPI1
#define RFM_IRQ 35
#else
#define RFM_IRQ 34
#endif
//#define RECEIVE_ATTR IRAM_ATTR
extern "C" {// uint16_t _crc16_update(uint16_t crc, uint8_t a);
uint16_t IRAM_ATTR _crc_xmodem_update (uint16_t crc, uint8_t data);}
//static void IRAM_ATTR rf12_interrupt()
#else //ESP8266 boards
#if defined(HALLARD)
#define RFM_IRQ 15 // works for Halards RFM12B/69CW module
#else
#define RFM_IRQ 4 // works for my esp8266
#endif
static void ICACHE_RAM_ATTR rf12_interrupt (); //
extern "C" {// uint16_t _crc16_update(uint16_t crc, uint8_t a);
uint16_t ICACHE_RAM_ATTR _crc_xmodem_update (uint16_t crc, uint8_t data);}
#endif
#include <EEPROM.h>
#include "crc16.h"
// same code as in util/crc16.h
//uint16_t _crc16_update(uint16_t crc, uint8_t a)
//{
// int i;
// crc ^= a;
// for (i = 0; i < 8; ++i) {
// if (crc & 1)
// crc = (crc >> 1) ^ 0xA001;
// else
// crc = (crc >> 1);
// }
// return crc;
//}
#elif defined (MCU_STM32F103C8) || defined(MCU_STM32F103CB) || defined(MCU_STM32F103CBT6) || defined(MCU_STM32F103RB) || defined(STM32F103xB)
#if JEELIB_SPI1 //true if using At328PB and SPI1. False if SPI or SPI0.
#define RFM_IRQ PA8 // SPI1 interrupt
#else
#define RFM_IRQ PB0 // SPI interrupt
#endif
extern "C" {uint16_t _crc_xmodem_update (uint16_t crc, uint8_t data);}
#include <EEPROM.h>
#include "crc16.h"
/*
#define BOARD_NR_SPI 2 two api awailable
#define BOARD_SPI1_NSS_PIN PA4
#define BOARD_SPI1_MOSI_PIN PA7
#define BOARD_SPI1_MISO_PIN PA6
#define BOARD_SPI1_SCK_PIN PA5
#define BOARD_SPI2_NSS_PIN PB12
#define BOARD_SPI2_MOSI_PIN PB15
#define BOARD_SPI2_MISO_PIN PB14
#define BOARD_SPI2_SCK_PIN PB13
*/
#else
#include <avr/io.h>
#include <util/crc16.h>
#include <avr/eeprom.h>
#include <avr/sleep.h>
#define RFM_IRQ 2 // Arduino interrupt pin number used by radio (RFM12b/RFM69CW)
#endif
#if RF12_COMPAT
#define rf12_rawlen rf12_buf[1]
#define rf12_dest (rf12_buf[2] & RF12_HDR_MASK)
#define rf12_orig (rf12_buf[3] & RF12_HDR_MASK)
#define slack 6
#define crc_initVal 0x1D0F
#define crc_endVal 0x1D0F
#define crc_update _crc_xmodem_update
#else
#define rf12_rawlen rf12_len
// #define rf12_dest (rf12_hdr & RF12_HDR_DST ? rf12_hdr & RF12_HDR_MASK : 0)
// #define rf12_orig (rf12_hdr & RF12_HDR_DST ? 0 : rf12_hdr & RF12_HDR_MASK)
#define slack 5
#define crc_initVal ~0
#define crc_endVal 0
#define crc_update _crc16_update
#endif
//#define OPTIMIZE_SPI 1 // uncomment this to write to the RFM12B @ 8 Mhz
// pin change interrupts are currently only supported on ATmega328's
// #define PINCHG_IRQ 1 // uncomment this to use pin-change interrupts
// maximum transmit / receive buffer: 3 header + data + 2 crc bytes
#define RF_MAX (RF12_MAXDATA + 5)
// pins used for the RFM12B interface - yes, there *is* logic in this madness:
//
// - leave RFM_IRQ set to the pin which corresponds with INT0, because the
// current driver code will use attachInterrupt() to hook into that
// - (new) you can now change RFM_IRQ, if you also enable PINCHG_IRQ - this
// will switch to pin change interrupts instead of attach/detachInterrupt()
// - use SS_DDR, SS_PORT, and SS_BIT to define the pin you will be using as
// select pin for the RFM12B (you're free to set them to anything you like)
// - please leave SPI_SS, SPI_MOSI, SPI_MISO, and SPI_SCK as is, i.e. pointing
// to the hardware-supported SPI pins on the ATmega, *including* SPI_SS !
//#if defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1280__)
//
//#define RFM_IRQ 2
//#define SS_DDR DDRB
//#define SS_PORT PORTB
//#define SS_BIT 0
//
//#define SPI_SS 53 // PB0, pin 19
//#define SPI_MOSI 51 // PB2, pin 21
//#define SPI_MISO 50 // PB3, pin 22
//#define SPI_SCK 52 // PB1, pin 20
//
//#elif defined(__AVR_ATmega644P__)
//
//#define RFM_IRQ 10
//#define SS_DDR DDRB
//#define SS_PORT PORTB
//#define SS_BIT 4
//
//#define SPI_SS 4
//#define SPI_MOSI 5
//#define SPI_MISO 6
//#define SPI_SCK 7
//
//#elif defined(__AVR_ATtiny84__) || defined(__AVR_ATtiny44__)
//
//#define RFM_IRQ 2
//#define SS_DDR DDRB
//#define SS_PORT PORTB
//#define SS_BIT 1
//
//#define SPI_SS 1 // PB1, pin 3
//#define SPI_MISO 4 // PA6, pin 7
//#define SPI_MOSI 5 // PA5, pin 8
//#define SPI_SCK 6 // PA4, pin 9
//
//#elif defined(__AVR_ATmega32U4__) //Arduino Leonardo
//
//#define RFM_IRQ 0 // PD0, INT0, Digital3
//#define SS_DDR DDRB
//#define SS_PORT PORTB
//#define SS_BIT 6 // Dig10, PB6
//
//#define SPI_SS 17 // PB0, pin 8, Digital17
//#define SPI_MISO 14 // PB3, pin 11, Digital14
//#define SPI_MOSI 16 // PB2, pin 10, Digital16
//#define SPI_SCK 15 // PB1, pin 9, Digital15
//
//#elif defined(__AVR_ATmega328PB__) //Atmega328PB
// // Atmega328PB support trough MiniCore, https://github.com/MCUdude/MiniCore/
//#define RFM_IRQ 2 // 2=JeeNode
//#if JEELIB_SPI1
//// SPI1 pin settings
// #define SS_DDR DDRE //Port E Data Direction Register of SPI_MISO and SPI_SCK
// #define SS_PORT PORTE
// #define SS_BIT 2 //
// //mixture of normal Arduino numbers and MiniCore numbers. Other number conventions not used
// #define SPI_SS 25 // PE2, pin 19 SS1 MiniCore numbers used (A6=D25)
// #define SPI_MOSI 26 // PE3, pin 22 MOSI1 MiniCore numbers used (A7=D26)
// #define SPI_MISO 14 // PC0, pin 23 MISO1 Arduino numbers used (A0=D14)
// #define SPI_SCK 15 // PC1, pin 24 SCK1 Arduino numbers used (A1=D15)
// //#ifndef SPCR // not useful with SPI1 as is with SPI0
// // #define SPCR SPCR1
// // #define SPSR SPSR1
// // #define SPDR SPDR1
// //#endif
//#else
// // SPI0 pin settings
//// You can use either SPI0 or SPI1, not both in the same time
//// Using both in the same time needs more to hack
// #define SS_DDR DDRB
// #define SS_PORT PORTB
// #define SS_BIT 2 // for PORTB: 2 = d.10, 1 = d.9, 0 = d.8
// //normal Arduino numbers
// #define SPI_SS 10 // PB2, pin 14 32 TQFP package
// #define SPI_MOSI 11 // PB3, pin 15 32 TQFP package
// #define SPI_MISO 12 // PB4, pin 16 32 TQFP package
// #define SPI_SCK 13 // PB5, pin 17 32 TQFP package
//
// //MiniCore at C:\Users\******\AppData\Local\Arduino15\packages\MiniCore\hardware\avr\2.0.3\variants\pb-variant\pins_arduino.h
// // Other atmega328PB arduino libraries/packages may have other solutions - other pin numbers anyway
// #ifndef SPCR
// #define SPCR SPCR0
// #define SPSR SPSR0
// #define SPDR SPDR0
// #endif
//#endif
//
//
//#else
//
//// ATmega168, ATmega328, etc.
//#define RFM_IRQ 2 // 2=JeeNode, 18=JeeNode pin change
////#define RFM_IRQ 1 // PCINT1=JeeNode Block pin change
//#define SS_DDR DDRB
//#define SS_PORT PORTB
//#define SS_BIT 2 // for PORTB: 2 = d.10, 1 = d.9, 0 = d.8
//
//#define SPI_SS 10 // PB2, pin 16 28 PDIP package
//#define SPI_MOSI 11 // PB3, pin 17 28 PDIP package
//#define SPI_MISO 12 // PB4, pin 18 28 PDIP package
//#define SPI_SCK 13 // PB5, pin 19 28 PDIP package
//
//#endif
// RF12 command codes
#define RF_RECV_CONTROL 0x94A0
#define RF_RECEIVER_ON 0x82DD
#define RF_XMITTER_ON 0x823D
#define RF_IDLE_MODE 0x820D
#define RF_SLEEP_MODE 0x8205
#define RF_WAKEUP_MODE 0x8207
#define RF_TXREG_WRITE 0xB800
#define RF_RX_FIFO_READ 0xB000
#define RF_WAKEUP_TIMER 0xE000
// RF12 status bits
#define RF_LBD_BIT 0x0400
#define RF_RSSI_BIT 0x0100
// bits in the node id configuration byte
#define NODE_BAND 0xC0 // frequency band
#define NODE_ID RF12_HDR_MASK // id of this node, as A..Z or 1..31
// transceiver states, these determine what to do with each interrupt
enum {
TXCRC1, TXCRC2, TXTAIL, TXDONE, TXIDLE,
TXRECV,
TXPRE1, TXPRE2, TXPRE3, //TXPRE4, TXPRE5, TXPRE6, TXPRE7, TXPRE8,
TXSYN1, TXSYN2,
};
//static uint8_t cs_pin = SS_BIT; // chip select pin
static uint8_t nodeid; // address of this node
static uint8_t group; // network group
static uint16_t frequency; // Frequency within selected band
static volatile uint8_t rxfill; // number of data bytes in rf12_buf
static volatile int8_t rxstate; // current transceiver state
#define RETRIES 8 // stop retrying after 8 times
#define RETRY_MS 1000 // resend packet every second until ack'ed
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
volatile uint16_t rf12_crc; // running crc value
volatile uint8_t rf12_buf[RF_MAX]; // recv/xmit buf, including hdr & crc bytes
long rf12_seq; // seq number of encrypted packet (or -1)
static uint8_t rf12_fixed_pkt_len; // fixed packet length reception
static uint32_t seqNum; // encrypted send sequence number
static uint32_t cryptKey[4]; // encryption key to use
void (*crypter)(uint8_t); // does en-/decryption (null if disabled)
#if RF12_COMPAT
const uint8_t whitening[] = {
// see http://www.semtech.com/images/datasheet/AN1200.18_STD.pdf
255,135,184,89,183,161,204,36,87,94,75,156,14,233,234,80,42,190,180,27,182,
176,93,241,230,154,227,69,253,44,83,24,12,202,201,251,73,55,229,168,81,59,
47,97,170,114,24,132,2,35,35,171,99,137,81,179,231,139,114,144,76,232,251,
193,255,15,112,179,111,67,
};
#endif
// function to set chip select pin from within sketch
void rf12_set_cs (uint8_t pin) {
#if defined(__AVR_ATmega32U4__) //Arduino Leonardo
cs_pin = pin - 4; // Dig10 (PB6), Dig9 (PB5), or Dig8 (PB4)
#elif defined(__AVR_ATmega168__) || defined(__AVR_ATmega328__) || defined (__AVR_ATmega328P__) // ATmega168, ATmega328
//|| defined (__AVR_ATmega328PB__) //ATmega328PB 051119
cs_pin = pin - 8; // Dig10 (PB2), Dig9 (PB1), or Dig8 (PB0)
#endif
}
//RFM12b reliable SPI read speed is 2 MHz, write speed is higher 4-8 Mhz
#if JEELIB_SPI1 //true if using At328PB and SPI1. False if SPI or SPI0.
#if defined (MCU_STM32F103C8) || defined(MCU_STM32F103CB) || defined(MCU_STM32F103CBT6) || defined(MCU_STM32F103RB) || defined(STM32F103xB)
SPISettings settingsRead(2000000L, MSBFIRST, SPI_MODE0); //SPI setings for reading
SPISettings settingsWrite(F_CPU, MSBFIRST, SPI_MODE0); //SPI setings for writing
#elif defined (ESP32)
SPISettings settingsRead(2000000L, MSBFIRST, SPI_MODE0); //SPI setings for reading
SPISettings settingsWrite(F_CPU, MSBFIRST, SPI_MODE0); //SPI setings for writing
#else
SPI1Settings settingsRead(2000000L, MSBFIRST, SPI_MODE0); //SPI setings for reading
SPI1Settings settingsWrite(F_CPU, MSBFIRST, SPI_MODE0); //SPI setings for writing
#endif
#else
SPISettings settingsRead(2000000L, MSBFIRST, SPI_MODE0); //SPI setings for reading
SPISettings settingsWrite(F_CPU, MSBFIRST, SPI_MODE0); //SPI setings for writing
#endif
/// @details
/// Initialise the SPI port for use by the RF12 driver.
void rf12_spiInit () {
digitalWrite(cs_pin,HIGH);
pinMode(cs_pin,OUTPUT);
//pinMode(MISO,INPUT_PULLUP);
//pinMode(RFM_IRQ,INPUT); //Moved to end of rf12_initialize()
#if JEELIB_SPI1 //if using At328PB or STM32F103X and SPI1.
#if defined (MCU_STM32F103C8) || defined(MCU_STM32F103CB) || defined(MCU_STM32F103CBT6) || defined(MCU_STM32F103RB) || defined(STM32F103xB)
#if defined(STM32F103xB) //Maple Mini
#if defined(RF69_COMPAT) //if using radio RFM69CW
// do nothing. To prevent compiler errors
#else
pinMode(PIN_SPI_MISO,INPUT_PULLUP);
//SPI_M2.begin(28, 29, 30 ); //mosi, miso, sclk
SPI_M2.begin();
#endif
#else
pinMode(BOARD_SPI2_MISO_PIN,INPUT_PULLUP);
#if defined(RF69_COMPAT) //if using radio RFM69CW
// do nothing. To prevent compiler errors
#else
SPI_2.begin(); //mosi, miso, sclk, ssel
#endif
#endif
#elif defined (ESP32)
#if defined(RF69_COMPAT) //if using radio RFM69CW
#else
hspi = new SPIClass(HSPI);
pinMode(12,INPUT_PULLUP);
hspi->begin(); //hspi default values; SCLK = 14, MISO = 12, MOSI = 13, SS = 15
// Serial.println("spi_bus ");//Serial.println(hspi->spi_bus);//debug, not allowing to access variable "spi_bus"
#endif
#else
pinMode(MISO1,INPUT_PULLUP);
SPI1.begin();
#endif
#else
pinMode(MISO,INPUT_PULLUP);
SPI.begin();
Serial.println("SPI.begin(); ");//Serial.println(hspi->spi_bus);
#endif
#if defined (ESP8266) || defined (ESP8266_GENERIC)
EEPROM.begin(512);
#elif defined (ESP32)
if(!EEPROM.begin(512)){Serial.println(F("\r\n EEPROM.begin() failed"));}
#elif defined(MCU_STM32F103C8) || defined(MCU_STM32F103CB) || defined(MCU_STM32F103CBT6) || defined(MCU_STM32F103RB)
// SPI.setBitOrder(MSBFIRST); // Set the SPI_1 bit order
// SPI.setClockDivider(SPI_CLOCK_DIV64); // Slow speed (72 / 32 = 2.25 MHz SPI_1 speed)
//uint16 Status = EEPROM.init(0x801F000, 0x801F200, 0x200);
byte Status = EEPROM.init(0x801F000, 0x801F200, 0x200);
#elif defined(STM32F103xB)
EEPROM.begin();
// #elif defined (__LGT8FX8P__)
// EEPROM.begin();
#endif
}
//void rf12_spiInit () {
// //Serial.print("\r\nPIN_SPI_SCK1 ");Serial.println(PIN_SPI_SCK1);Serial.flush();//debug
// bitSet(SS_PORT, cs_pin);
// bitSet(SS_DDR, cs_pin);
// digitalWrite(SPI_SS, 1);
// pinMode(SPI_SS, OUTPUT);
// pinMode(SPI_MOSI, OUTPUT);
// pinMode(SPI_MISO, INPUT);
// pinMode(SPI_SCK, OUTPUT);
//#ifdef SPCR
// #if defined(__AVR_ATmega328PB__) & (JEELIB_SPI1) //Atmega328PB
// // #if JEELIB_SPI1
// //SPI1
// // Serial.print("\r\nSPCR1 = _BV(SPE) | _BV(MSTR); ");Serial.flush();
// SPCR1 = _BV(SPE) | _BV(MSTR); // if Atmega328PB & SPI1, must use SPCR1
// #if F_CPU > 10000000
// // use clk/2 (2x 1/4th) for sending (and clk/8 for recv, see rf12_xferSlow)
// SPSR1 |= _BV(SPI2X); // if Atmega328PB & SPI1, must use SPSR
// #endif //end Atmega328PB 051119
// // #else //SPI0
// // //Serial.print("\r\nSPCR0 = _BV(SPE) | _BV(MSTR); ");Serial.flush();
// // SPCR0 = _BV(SPE) | _BV(MSTR);
// // #if F_CPU > 10000000
// // // use clk/2 (2x 1/4th) for sending (and clk/8 for recv, see rf12_xferSlow)
// // SPSR0 |= _BV(SPI2X);
// // #endif
// // #endif
// #else
// //Serial.print("\r\nSPCR = _BV(SPE) | _BV(MSTR); ");Serial.flush();
// SPCR = _BV(SPE) | _BV(MSTR);
// #if F_CPU > 10000000
// // use clk/2 (2x 1/4th) for sending (and clk/8 for recv, see rf12_xferSlow)
// SPSR |= _BV(SPI2X);
// #endif
// #endif
//#else
// // ATtiny
// USICR = bit(USIWM0);
//#endif
// pinMode(RFM_IRQ, INPUT_PULLUP);
// //digitalWrite(RFM_IRQ, 1); // pull-up
//Serial.print("PIN_A6 ");Serial.println(PIN_A6);
//Serial.print("\r\nRFM_IRQ ");Serial.println(digitalRead(RFM_IRQ));
//Serial.print("Digital 2 ");Serial.println(digitalRead(2));
//Serial.flush();//debug
//#define PIN_A6 (6)
// do{;}while(true);
//}
//static uint8_t rf12_byte (uint8_t out) {
//#ifdef SPDR
// #if defined(__AVR_ATmega328PB__) & (JEELIB_SPI1) //Atmega328PB 051119
// // #if JEELIB_SPI1
// SPDR1 = out; // if Atmega328PB & SPI1, must use SPCR1
// // this loop spins 4 usec with a 2 MHz SPI clock
// while (!(SPSR1 & _BV(SPIF))) // if Atmega328PB & SPI1, must use SPCR1
// ;
// return SPDR1; // if Atmega328PB & SPI1, must use SPCR1
// // #else
// // //SPI0
// // SPDR0 = out; // if Atmega328PB & SPI0, must use SPCR0
// // // this loop spins 4 usec with a 2 MHz SPI clock
// // while (!(SPSR0 & _BV(SPIF))) // if Atmega328PB & SPI0, must use SPCR0
// // ;
// // return SPDR0; // if Atmega328PB & SPI0, must use SPCR0
// // #endif
// #else
// SPDR = out;
// // this loop spins 4 usec with a 2 MHz SPI clock
// while (!(SPSR & _BV(SPIF)))
// ;
// return SPDR;
// #endif
//#else
// // ATtiny
// USIDR = out;
// byte v1 = bit(USIWM0) | bit(USITC);
// byte v2 = bit(USIWM0) | bit(USITC) | bit(USICLK);
//#if F_CPU <= 5000000
// // only unroll if resulting clock stays under 2.5 MHz
// USICR = v1; USICR = v2;
// USICR = v1; USICR = v2;
// USICR = v1; USICR = v2;
// USICR = v1; USICR = v2;
// USICR = v1; USICR = v2;
// USICR = v1; USICR = v2;
// USICR = v1; USICR = v2;
// USICR = v1; USICR = v2;
//#else
// for (uint8_t i = 0; i < 8; ++i) {
// USICR = v1;
// USICR = v2;
// }
//#endif
// return USIDR;
//#endif
//}
//static uint16_t rf12_xferSlow (uint16_t cmd) {
// // slow down to under 2.5 MHz
//#if defined(__AVR_ATmega328PB__) & JEELIB_SPI1 //Atmega328PB
//// #if JEELIB_SPI1
// //SPI1
// #if F_CPU > 10000000
// bitSet(SPCR1, SPR0); // if Atmega328PB & SPI1, must use SPCR1
// #endif
// bitClear(SS_PORT, cs_pin);
// uint16_t reply = rf12_byte(cmd >> 8) << 8;
// reply |= rf12_byte(cmd);
// bitSet(SS_PORT, cs_pin);
// #if F_CPU > 10000000
// bitClear(SPCR1, SPR0); // if Atmega328PB & SPI1, must use SPCR1
// #endif
// return reply;
// // #else
// //SPI0
//// #if F_CPU > 10000000
//// bitSet(SPCR0, SPR0); // if Atmega328PB & SPI0, must use SPCR0
//// #endif
//// bitClear(SS_PORT, cs_pin);
//// uint16_t reply = rf12_byte(cmd >> 8) << 8;
//// reply |= rf12_byte(cmd);
//// bitSet(SS_PORT, cs_pin);
//// #if F_CPU > 10000000
//// bitClear(SPCR0, SPR0); // if Atmega328PB & SPI0, must use SPCR0
//// #endif
//// return reply;
//// #endif
//#else /Other (avr)microcontrollers
// #if F_CPU > 10000000
// bitSet(SPCR, SPR0);
// #endif
// bitClear(SS_PORT, cs_pin);
// uint16_t reply = rf12_byte(cmd >> 8) << 8;
// reply |= rf12_byte(cmd);
// bitSet(SS_PORT, cs_pin);
// #if F_CPU > 10000000
// bitClear(SPCR, SPR0);
// #endif
// return reply;
//#endif
//
//}
//#if OPTIMIZE_SPI
//static void rf12_xfer (uint16_t cmd) {
// // writing can take place at full speed, even 8 MHz works
// bitClear(SS_PORT, cs_pin);//
// rf12_byte(cmd >> 8) << 8;
// rf12_byte(cmd);
// bitSet(SS_PORT, cs_pin);
//}
//#else
//#define rf12_xfer rf12_xferSlow
//#endif
#if defined (ESP32)
unsigned int IRAM_ATTR rf12_xferSlow(unsigned int cmd)
#else
unsigned int rf12_xferSlow(unsigned int cmd)
#endif
{
unsigned int result; // result to return
#if JEELIB_SPI1 //if using At328PB and SPI1.
#if defined (MCU_STM32F103C8) || defined(MCU_STM32F103CB) || defined(MCU_STM32F103CBT6) || defined(MCU_STM32F103RB)
#if defined(RF69_COMPAT) //if using radio RFM69CW
// do nothing. To prevent compiler errors
#else
SPI_2.beginTransaction(settingsRead);
#endif
#elif defined(STM32F103xB) //Maple Mini
#if defined(RF69_COMPAT) //if using radio RFM69CW
// do nothing. To prevent compiler errors
#else
SPI_M2.beginTransaction(settingsRead);
#endif
#elif defined (ESP32)
#if defined(RF69_COMPAT) //if using radio RFM69CW
//do nothing. Routine for RFM69CW is in RF69_avr1.h
#else
//initialise hspi with default pins SCLK = 14, MISO = 12, MOSI = 13, SS = 15
hspi->beginTransaction(settingsRead);;
#endif
#else
SPI1.beginTransaction(settingsRead);
#endif
#else
SPI.beginTransaction(settingsRead);
#endif
// take the chip select low to select the device:
digitalWrite(cs_pin, LOW);
#if JEELIB_SPI1 //if using At328PB and SPI1.
#if defined (MCU_STM32F103C8) || defined(MCU_STM32F103CB) || defined(MCU_STM32F103CBT6) || defined(MCU_STM32F103RB)
#if defined(RF69_COMPAT) //if using radio RFM69CW
// do nothing. To prevent compiler errors
#else
result=SPI_2.transfer16(cmd); //Send value to record into register
#endif
#elif defined(STM32F103xB) //Maple Mini
#if defined(RF69_COMPAT) //if using radio RFM69CW
// do nothing. To prevent compiler errors
#else
result=SPI_M2.transfer16(cmd); //Send value to record into register
#endif
#elif defined (ESP32)
#if defined(RF69_COMPAT) //if using radio RFM69CW
//do nothing. Routine for RFM69CW is in RF69_avr1.h
#else
result=hspi->transfer16(cmd); //Send value to record into register
#endif
#else
result=SPI1.transfer16(cmd); //Send value to record into register
#endif
#else
result=SPI.transfer16(cmd); //Send value to record into register
#endif
// take the chip select high to de-select:
digitalWrite(cs_pin, HIGH);
#if JEELIB_SPI1 //if using At328PB and SPI1.
#if defined (MCU_STM32F103C8) || defined(MCU_STM32F103CB) || defined(MCU_STM32F103CBT6) || defined(MCU_STM32F103RB)
#if defined(RF69_COMPAT) //if using radio RFM69CW
// do nothing. To prevent compiler errors
#else
SPI_2.endTransaction();
#endif
#elif defined(STM32F103xB) //Maple Mini
#if defined(RF69_COMPAT) //if using radio RFM69CW
// do nothing. To prevent compiler errors
#else
SPI_M2.endTransaction();
#endif
#elif defined (ESP32)
#if defined(RF69_COMPAT) //if using radio RFM69CW
//do nothing. Routine for RFM69CW is in RF69_avr1.h
#else
hspi->endTransaction();
#endif
#else
SPI1.endTransaction();
#endif
#else
SPI.endTransaction();
#endif
return result;
}
#if OPTIMIZE_SPI
#if defined (ESP32)
unsigned int IRAM_ATTR rf12_xfer(unsigned int cmd)
#else
unsigned int rf12_xfer(unsigned int cmd)
#endif
{
unsigned int result; // result to return
#if JEELIB_SPI1 //if using At328PB and SPI1.
#if defined (MCU_STM32F103C8) || defined(MCU_STM32F103CB) || defined(MCU_STM32F103CBT6) || defined(MCU_STM32F103RB)
#if defined(RF69_COMPAT) //if using radio RFM69CW
// do nothing. To prevent compiler errors
#else
SPI_2.beginTransaction(settingsWrite);
#endif
#elif defined(STM32F103xB) //Maple Mini
#if defined(RF69_COMPAT) //if using radio RFM69CW
// do nothing. To prevent compiler errors
#else
SPI_M2.beginTransaction(settingsWrite);
#endif
#elif defined (ESP32)
#if defined(RF69_COMPAT) //if using radio RFM69CW
//do nothing. Routine for RFM69CW is in RF69_avr1.h
#else
hspi->beginTransaction(settingsWrite);
#endif
#else
SPI1.beginTransaction(settingsWrite);
#endif
#else
SPI.beginTransaction(settingsWrite);
#endif
//SPI.beginTransaction(settingsWrite);
// take the chip select low to select the device:
digitalWrite(cs_pin, LOW);
#if JEELIB_SPI1 //if using At328PB and SPI1.
#if defined (MCU_STM32F103C8) || defined(MCU_STM32F103CB) || defined(MCU_STM32F103CBT6) || defined(MCU_STM32F103RB)
#if defined(RF69_COMPAT) //if using radio RFM69CW
// do nothing. To prevent compiler errors
#else
result=SPI_2.transfer16(cmd); //Send value to record into register
#endif
#elif defined(STM32F103xB) //Maple Mini
#if defined(RF69_COMPAT) //if using radio RFM69CW
// do nothing. To prevent compiler errors
#else
SPI_M2.transfer16(cmd); //Send value to record into register
#endif
#elif defined (ESP32)
#if defined(RF69_COMPAT) //if using radio RFM69CW
//do nothing. Routine for RFM69CW is in RF69_avr1.h
#else
result=hspi->transfer16(cmd); //Send value to record into register
#endif
#else
result=SPI1.transfer16(cmd); //Send value to record into register
#endif
#else
result=SPI.transfer16(cmd); //Send value to record into register
#endif
//result=SPI.transfer16(cmd); //Send value to record into register
// take the chip select high to de-select:
digitalWrite(cs_pin, HIGH);
#if JEELIB_SPI1 //if using At328PB and SPI1.
#if defined (MCU_STM32F103C8) || defined(MCU_STM32F103CB) || defined(MCU_STM32F103CBT6) || defined(MCU_STM32F103RB)
#if defined(RF69_COMPAT) //if using radio RFM69CW
// do nothing. To prevent compiler errors
#else
SPI_2.endTransaction();
#endif
#elif defined(STM32F103xB) //Maple Mini
#if defined(RF69_COMPAT) //if using radio RFM69CW
// do nothing. To prevent compiler errors
#else
SPI_M2.endTransaction();
#endif
#elif defined (ESP32)
#if defined(RF69_COMPAT) //if using radio RFM69CW
//do nothing. Routine for RFM69CW is in RF69_avr1.h
#else
hspi->endTransaction();
#endif
#else
SPI1.endTransaction();
#endif
#else
SPI.endTransaction();
#endif
return result;
}
#else
#define rf12_xfer rf12_xferSlow
#endif
/// @details
/// This call provides direct access to the RFM12B registers. If you're careful
/// to avoid configuring the wireless module in a way which stops the driver
/// from functioning, this can be used to adjust frequencies, power levels,
/// RSSI threshold, etc. See the RFM12B wireless module documentation.
///
/// This call will briefly disable s to avoid clashes on the SPI bus.
///
/// Returns the 16-bit value returned by SPI. Probably only useful with a
/// "0x0000" status poll command.
/// @param cmd RF12 command, topmost bits determines which register is affected.
//uint16_t rf12_control(uint16_t cmd) {
//#ifdef EIMSK
//#if PINCHG_IRQ
// #if RFM_IRQ < 8
// bitClear(PCICR, PCIE0);
// #elif RFM_IRQ < 16
// bitClear(PCICR, PCIE1);
// #else
// bitClear(PCICR, PCIE2);
// #endif
//#else
// #if defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1280__)
// bitClear(EIMSK, INT4);
// #else
// bitClear(EIMSK, INT0);
// #endif
//#endif
// uint16_t r = rf12_xferSlow(cmd);
//#if PINCHG_IRQ
// #if RFM_IRQ < 8
// bitSet(PCICR, PCIE0);
// #elif RFM_IRQ < 16
// bitSet(PCICR, PCIE1);
// #else
// bitSet(PCICR, PCIE2);
// #endif
//#else
// #if defined(__AVR_ATmega2560__) || defined(__AVR_ATmega1280__)
// bitSet(EIMSK, INT4);
// #else
// bitSet(EIMSK, INT0);
// #endif
//#endif
//#else
// // ATtiny
// bitClear(GIMSK, INT0);
// uint16_t r = rf12_xferSlow(cmd);
// bitSet(GIMSK, INT0);
//#endif
// return r;
//}
#if defined (ESP32)
uint16_t IRAM_ATTR rf12_control(uint16_t cmd)
#else
uint16_t rf12_control(uint16_t cmd)
#endif
{ uint16_t r = rf12_xferSlow(cmd);
return r;}
#if defined (ESP32)
static void IRAM_ATTR rf12_interrupt()
#else
static void rf12_interrupt ()
#endif
{
// a transfer of 2x 16 bits @ 2 MHz over SPI takes 2x 8 us inside this ISR
// correction: now takes 2 + 8 µs, since sending can be done at 8 MHz
rf12_xfer(0x0000);
if (rxstate == TXRECV) {
uint8_t in = rf12_xferSlow(RF_RX_FIFO_READ);
if (rxfill == 0 && group != 0)
rf12_buf[rxfill++] = group;
#if RF12_COMPAT
in ^= whitening[rxfill-1];
#endif
rf12_buf[rxfill++] = in;
rf12_crc = crc_update(rf12_crc, in);
if (rxfill >= rf12_len + 5 + RF12_COMPAT || rxfill >= RF_MAX)
rf12_xfer(RF_IDLE_MODE);
} else {
uint8_t out;
if (rxstate < 0) {
uint8_t pos = 3 + RF12_COMPAT + rf12_len + rxstate++;
out = rf12_buf[pos];
rf12_crc = crc_update(rf12_crc, out);
#if RF12_COMPAT
out ^= whitening[pos-1];
#endif
} else {
switch (rxstate) {
case TXSYN1: out = 0x2D; break;
case TXSYN2: out = group;
rxstate = - (3 + RF12_COMPAT + rf12_len);
break;
#if RF12_COMPAT
case TXCRC1: out = ~rf12_crc >> 8; break;
case TXCRC2: out = ~rf12_crc; break;
#else
case TXCRC1: out = rf12_crc; break;
case TXCRC2: out = rf12_crc >> 8; break;
#endif
case TXDONE: rf12_xfer(RF_IDLE_MODE); // fall through
default: out = 0xAA;
}
#if RF12_COMPAT
if (rxstate < TXDONE) // this applies only to TXCRC1 and TXCRC2
out ^= whitening[3 + rf12_len + rxstate];
#endif
++rxstate;
}
rf12_xfer(RF_TXREG_WRITE + out);
}
}
#if PINCHG_IRQ // pin change interrups may not work in this forked library
#if RFM_IRQ < 8
ISR(PCINT0_vect) {
while (!bitRead(PINB, RFM_IRQ))
rf12_interrupt();
}
#elif RFM_IRQ < 16
ISR(PCINT1_vect) {
while (!bitRead(PINC, RFM_IRQ - 8))
rf12_interrupt();
}
#else
ISR(PCINT2_vect) {
while (!bitRead(PIND, RFM_IRQ - 16))
rf12_interrupt();
}
#endif
#endif
static void rf12_recvStart () {
if (rf12_fixed_pkt_len) {
rf12_rawlen = rf12_fixed_pkt_len;
rf12_grp = rf12_hdr = 0;
rxfill = 3;
} else
rxfill = rf12_rawlen = 0;
rf12_crc = crc_initVal;
#if RF12_VERSION >= 2 && !RF12_COMPAT
if (group != 0)
rf12_crc = crc_update(rf12_crc, group);
#endif
rxstate = TXRECV;
rf12_xfer(RF_RECEIVER_ON);
}
#include <RF12.h>
#include <Ports.h> // needed to avoid a linker error :(
// Ports may not working in this fork of JeeLib
/// @details
/// The timing of this function is relatively coarse, because SPI transfers are
/// used to enable / disable the transmitter. This will add some jitter to the
/// signal, probably in the order of 10 µsec.
///
/// If the result is true, then a packet has been received and is available for
/// processing. The following global variables will be set:
///
/// * volatile byte rf12_hdr -
/// Contains the header byte of the received packet - with flag bits and
/// node ID of either the sender or the receiver.
/// * volatile byte rf12_len -
/// The number of data bytes in the packet. A value in the range 0 .. 66.
/// * volatile byte rf12_data -
/// A pointer to the received data.
/// * volatile byte rf12_crc -
/// CRC of the received packet, zero indicates correct reception. If != 0
/// then rf12_hdr, rf12_len, and rf12_data should not be relied upon.
///
/// To send an acknowledgement, call rf12_sendStart() - but only right after
/// rf12_recvDone() returns true. This is commonly done using these macros:
///
/// if(RF12_WANTS_ACK){
/// rf12_sendStart(RF12_ACK_REPLY,0,0);
/// }
/// @see http://jeelabs.org/2010/12/11/rf12-acknowledgements/
uint8_t rf12_recvDone () {
if (rxstate == TXRECV &&
(rxfill >= rf12_len + 5 + RF12_COMPAT || rxfill >= RF_MAX)) {
rxstate = TXIDLE;
rf12_crc ^= crc_endVal;
if (rf12_len > RF12_MAXDATA)
rf12_crc = 1; // force bad crc if packet length is invalid
#if RF12_COMPAT
if (rf12_dest == 0 || (nodeid & NODE_ID) == 63 ||
(rf12_dest == (nodeid & NODE_ID)))
#else
if (!(rf12_hdr & RF12_HDR_DST) || (nodeid & NODE_ID) == 31 ||
(rf12_hdr & RF12_HDR_MASK) == (nodeid & NODE_ID))
#endif
{
if (rf12_crc == 0 && crypter != 0)
crypter(0);
else
rf12_seq = -1;
return 1; // it's a broadcast packet or it's addressed to this node
}
}
if (rxstate == TXIDLE)
rf12_recvStart();
return 0;
}
/// @details
/// Call this when you have some data to send. If it returns true, then you can
/// use rf12_sendStart() to start the transmission. Else you need to wait and
/// retry this call at a later moment.
///
/// Don't call this function if you have nothing to send, because rf12_canSend()
/// will stop reception when it returns true. IOW, calling the function
/// indicates your intention to send something, and once it returns true, you
/// should follow through and call rf12_sendStart() to actually initiate a send.
/// See [this weblog post](http://jeelabs.org/2010/05/20/a-subtle-rf12-detail/).
///