CC1120 + Arduino Uno CCRF3 Click https://www.mikroe.com/ccrf-3-click
CC1120 synchronous serial mode
GDO0 pin connected to Arduino Uno digital pin 2 - SERIAL_CLK
GDO2 pin connected to Arduino Uno digital pin 3 - SERIAL_RX
GDO3 pin connected to Arduino Uno digital pin 4 - CARRIER_SENSE*
CC1120 AGC_CS_THR register sets threshold for carrier sense (-102 dBm + AGC_CS_THR value)
* CARRIER_SENSE_VALID signal seems not working ok in synchronous serial mode rx
Receiving DMR base station transmission. Probably much better rx quality with e.g. Teensy or Due.
#include <SPI.h>
#include "cc1120.h"
#define PRINT_INFO 1
#define DATA_SIZE 680
#define pinOfPin(P)\
(((P)>=0&&(P)<8)?&PIND:(((P)>7&&(P)<14)?&PINB:&PINC))
#define pinIndex(P)((uint8_t)(P>13?P-14:P&7))
#define pinMask(P)((uint8_t)(1<<pinIndex(P)))
#define isHigh(P)((*(pinOfPin(P))& pinMask(P))>0)
#define isLow(P)((*(pinOfPin(P))& pinMask(P))==0)
#define digitalState(P)((uint8_t)isHigh(P))
uint8_t data[DATA_SIZE];
uint8_t chipStatus = 0;
volatile uint16_t index = 0;
volatile bool printData = false;
void setup() {
Serial.begin(57600);
pinMode(RESET_PIN, OUTPUT);
pinMode(SS_PIN, OUTPUT);
pinMode(GDO0_PIN, INPUT);
pinMode(GDO2_PIN, INPUT);
pinMode(GDO3_PIN, INPUT);
digitalWrite(SS_PIN, HIGH);
digitalWrite(RESET_PIN, HIGH);
uint8_t v = 0;
memset(data, 0, sizeof(data));
SPI.begin();
// Sync off
v = readSPI(SYNC_CFG0);
v &= B11100011;
writeSPI(SYNC_CFG0, v);
// CRC off
v = readSPI(PKT_CFG1);
v &= B11110011;
writeSPI(PKT_CFG1, v);
writeSPI(IOCFG0, SERIAL_CLK);
writeSPI(IOCFG2, SERIAL_RX);
writeSPI(IOCFG3, CARRIER_SENSE);
writeSPI(SYNC0, SMARTRF_SETTING_SYNC0);
writeSPI(SYNC1, SMARTRF_SETTING_SYNC1);
writeSPI(SYNC2, SMARTRF_SETTING_SYNC2);
writeSPI(SYNC3, SMARTRF_SETTING_SYNC3);
writeSPI(SYNC_CFG1, SMARTRF_SETTING_SYNC_CFG1);
writeSPI(MODCFG_DEV_E, SMARTRF_SETTING_MODCFG_DEV_E);
writeSPI(DCFILT_CFG, SMARTRF_SETTING_DCFILT_CFG);
writeSPI(PREAMBLE_CFG1, SMARTRF_SETTING_PREAMBLE_CFG1);
writeSPI(IQIC, SMARTRF_SETTING_IQIC);
writeSPI(CHAN_BW, SMARTRF_SETTING_CHAN_BW);
writeSPI(MDMCFG1, SMARTRF_SETTING_MDMCFG1);
writeSPI(MDMCFG0, SMARTRF_SETTING_MDMCFG0);
writeSPI(SYMBOL_RATE2, SMARTRF_SETTING_SYMBOL_RATE2);
writeSPI(AGC_REF, SMARTRF_SETTING_AGC_REF);
writeSPI(AGC_CS_THR, SMARTRF_SETTING_AGC_CS_THR);
writeSPI(AGC_CFG1, SMARTRF_SETTING_AGC_CFG1);
writeSPI(AGC_CFG0, SMARTRF_SETTING_AGC_CFG0);
writeSPI(FIFO_CFG, SMARTRF_SETTING_FIFO_CFG);
writeSPI(FS_CFG, SMARTRF_SETTING_FS_CFG);
writeSPI(PKT_CFG2, SMARTRF_SETTING_PKT_CFG2);
writeSPI(PKT_CFG1, SMARTRF_SETTING_PKT_CFG1);
writeSPI(PKT_CFG0, SMARTRF_SETTING_PKT_CFG0);
writeSPI(PA_CFG2, SMARTRF_SETTING_PA_CFG2);
writeSPI(PA_CFG0, SMARTRF_SETTING_PA_CFG0);
writeExtAddrSPI(IF_MIX_CFG, SMARTRF_SETTING_IF_MIX_CFG);
writeExtAddrSPI(FREQOFF_CFG, SMARTRF_SETTING_FREQOFF_CFG);
writeExtAddrSPI(FREQ2, SMARTRF_SETTING_FREQ2);
writeExtAddrSPI(FREQ1, SMARTRF_SETTING_FREQ1);
writeExtAddrSPI(FREQ0, SMARTRF_SETTING_FREQ0);
writeExtAddrSPI(FS_DIG1, SMARTRF_SETTING_FS_DIG1);
writeExtAddrSPI(FS_DIG0, SMARTRF_SETTING_FS_DIG0);
writeExtAddrSPI(FS_CAL1, SMARTRF_SETTING_FS_CAL1);
writeExtAddrSPI(FS_CAL0, SMARTRF_SETTING_FS_CAL0);
writeExtAddrSPI(FS_DIVTWO, SMARTRF_SETTING_FS_DIVTWO);
writeExtAddrSPI(FS_DSM0, SMARTRF_SETTING_FS_DSM0);
writeExtAddrSPI(FS_DVC0, SMARTRF_SETTING_FS_DVC0);
writeExtAddrSPI(FS_PFD, SMARTRF_SETTING_FS_PFD);
writeExtAddrSPI(FS_PRE, SMARTRF_SETTING_FS_PRE);
writeExtAddrSPI(FS_REG_DIV_CML, SMARTRF_SETTING_FS_REG_DIV_CML);
writeExtAddrSPI(FS_SPARE, SMARTRF_SETTING_FS_SPARE);
writeExtAddrSPI(FS_VCO0, SMARTRF_SETTING_FS_VCO0);
writeExtAddrSPI(XOSC5, SMARTRF_SETTING_XOSC5);
writeExtAddrSPI(XOSC1, SMARTRF_SETTING_XOSC1);
writeExtAddrSPI(XOSC1, SMARTRF_SETTING_XOSC1);
#ifdef PRINT_INFO
v = readExtAddrSPI(PARTVERSION);
Serial.print(F("PARTVERSION "));
Serial.println(v, HEX);
v = readExtAddrSPI(PARTNUMBER);
Serial.print(F("PARTNUMBER "));
Serial.println(v, HEX);
#endif
strobeSPI(SRX);
delay(50);
v = readExtAddrSPI(MARCSTATE);
Serial.print(F("MARCSTATE "));
Serial.println(v, BIN);
attachInterrupt(digitalPinToInterrupt(GDO0_PIN), isr, FALLING);
}
void loop() {
uint8_t l = 0;
if (printData) {
Serial.print(F("\r\n\r\n"));
for (uint16_t i = 0; i < index; i++) {
Serial.print(data[i], HEX);
l++;
if (l == 31) {
Serial.println();
l = 0;
}
}
index = 0;
printData = false;
}
}
void isr() {
static uint8_t p = 0;
static uint8_t v = 0;
if (!printData) {
if (digitalState(GDO3_PIN)) {
// msbfirst (lsbfirst << n;)
v |= digitalState(GDO2_PIN) << (7 - p);
p++;
if (p == 8) {
data[index] = v;
v = 0;
p = 0;
index++;
if (index == DATA_SIZE) {
printData = true;
}
}
}
else {
if (index > 0) {
p = 0;
printData = true;
}
}
}
}
uint8_t readSPI(uint8_t addr) {
digitalWrite(SS_PIN, LOW);
chipStatus = SPI.transfer(R_BIT | addr);
uint8_t v = SPI.transfer(0x00);
digitalWrite(SS_PIN, HIGH);
return v;
}
void writeSPI(uint8_t addr, uint8_t value) {
digitalWrite(SS_PIN, LOW);
chipStatus = SPI.transfer(addr);
chipStatus = SPI.transfer(value);
digitalWrite(SS_PIN, HIGH);
}
void strobeSPI(uint8_t cmd)
{
digitalWrite(SS_PIN, LOW);
chipStatus = SPI.transfer(R_BIT | cmd);
digitalWrite(SS_PIN, HIGH);
}
uint8_t readExtAddrSPI(uint8_t addr) {
uint8_t v;
digitalWrite(SS_PIN, LOW);
chipStatus = SPI.transfer(R_BIT | EXT_ADDR);
SPI.transfer(addr);
v = SPI.transfer(0xff);
digitalWrite(SS_PIN, HIGH);
return v;
}
void writeExtAddrSPI(uint8_t addr, uint8_t value) {
digitalWrite(SS_PIN, LOW);
chipStatus = SPI.transfer(EXT_ADDR);
chipStatus = SPI.transfer(addr);
chipStatus = SPI.transfer(value);
digitalWrite(SS_PIN, HIGH);
}
/* Address Config = No address check */
/* Bit Rate = 9600 */
/* Deviation = 3.997803 */
/* Device Address = 0 */
/* Carrier frequency = 420.0125 MHz */
/* Manchester Enable = false */
/* PA Ramping = false */
/* Performance Mode = High Performance */
/* RX Filter BW = 12.500000 kHz */
/* Symbol rate = 4800 */
/* Whitening = false */
#ifndef SMARTRF_CC1120_H
#define SMARTRF_CC1120_H
#define SMARTRF_SETTING_SYNC3 0xAA
#define SMARTRF_SETTING_SYNC2 0xAA
#define SMARTRF_SETTING_SYNC1 0xAA
#define SMARTRF_SETTING_SYNC0 0xAA
#define SMARTRF_SETTING_SYNC_CFG1 0x0B
// 0x2B = 4-GFSK, 0x23 = 4-FSK
#define SMARTRF_SETTING_MODCFG_DEV_E 0x23
#define SMARTRF_SETTING_DCFILT_CFG 0x1C
#define SMARTRF_SETTING_PREAMBLE_CFG1 0x00
#define SMARTRF_SETTING_IQIC 0xC6
// 0x08 = 25, 0x10 = 12.5
#define SMARTRF_SETTING_CHAN_BW 0x10
#define SMARTRF_SETTING_MDMCFG1 0x06
#define SMARTRF_SETTING_MDMCFG0 0x0A
// 0x63 = 4.8, 0x73 = 9.6
#define SMARTRF_SETTING_SYMBOL_RATE2 0x63
#define SMARTRF_SETTING_AGC_REF 0x20
// 102 dBm - 22 (0x16)
#define SMARTRF_SETTING_AGC_CS_THR 0x16
#define SMARTRF_SETTING_AGC_CFG1 0x0A
#define SMARTRF_SETTING_AGC_CFG0 0xCF
#define SMARTRF_SETTING_FIFO_CFG 0x00
#define SMARTRF_SETTING_FS_CFG 0x14
#define SMARTRF_SETTING_PKT_CFG2 0x05
#define SMARTRF_SETTING_PKT_CFG1 0x00
#define SMARTRF_SETTING_PKT_CFG0 0x20
#define SMARTRF_SETTING_PA_CFG2 0x3F
#define SMARTRF_SETTING_PA_CFG0 0x7E
#define SMARTRF_SETTING_IF_MIX_CFG 0x00
#define SMARTRF_SETTING_FREQOFF_CFG 0x22
#define SMARTRF_SETTING_FREQ2 0x69
#define SMARTRF_SETTING_FREQ1 0x00
#define SMARTRF_SETTING_FREQ0 0xCD
#define SMARTRF_SETTING_FS_DIG1 0x00
#define SMARTRF_SETTING_FS_DIG0 0x5F
#define SMARTRF_SETTING_FS_CAL1 0x40
#define SMARTRF_SETTING_FS_CAL0 0x0E
#define SMARTRF_SETTING_FS_DIVTWO 0x03
#define SMARTRF_SETTING_FS_DSM0 0x33
#define SMARTRF_SETTING_FS_DVC0 0x17
#define SMARTRF_SETTING_FS_PFD 0x50
#define SMARTRF_SETTING_FS_PRE 0x6E
#define SMARTRF_SETTING_FS_REG_DIV_CML 0x14
#define SMARTRF_SETTING_FS_SPARE 0xAC
#define SMARTRF_SETTING_FS_VCO0 0xB4
#define SMARTRF_SETTING_XOSC5 0x0E
#define SMARTRF_SETTING_XOSC1 0x03
// Pins
#define GDO0_PIN 2
#define GDO2_PIN 3
#define GDO3_PIN 4
#define RESET_PIN 7
#define SS_PIN 10
#define R_BIT 0x80
#define SERIAL_CLK 0x08
#define SERIAL_RX 0x09
#define CARRIER_SENSE_VALID 0x10
#define CARRIER_SENSE 0x11
// CC1120 registers
#define IOCFG3 0x00
#define IOCFG2 0x01
#define IOCFG1 0x02
#define IOCFG0 0x03
#define SYNC3 0x04
#define SYNC2 0x05
#define SYNC1 0x06
#define SYNC0 0x07
#define SYNC_CFG1 0x08
#define SYNC_CFG0 0x09
#define DEVIATION_M 0x0A
#define MODCFG_DEV_E 0x0B
#define DCFILT_CFG 0x0C
#define PREAMBLE_CFG1 0x0D
#define PREAMBLE_CFG0 0x0E
#define FREQ_IF_CFG 0x0F
#define IQIC 0x10
#define CHAN_BW 0x11
#define MDMCFG1 0x12
#define MDMCFG0 0x13
#define SYMBOL_RATE2 0x14
#define SYMBOL_RATE1 0x15
#define SYMBOL_RATE0 0x16
#define AGC_REF 0x17
#define AGC_CS_THR 0x18
#define AGC_GAIN_ADJUST 0x19
#define AGC_CFG3 0x1A
#define AGC_CFG2 0x1B
#define AGC_CFG1 0x1C
#define AGC_CFG0 0x1D
#define FIFO_CFG 0x1E
#define DEV_ADDR 0x1F
#define SETTLING_CFG 0x20
#define FS_CFG 0x21
#define WOR_CFG1 0x22
#define WOR_CFG0 0x23
#define WOR_EVENT0_MSB 0x24
#define WOR_EVENT0_LSB 0x25
#define PKT_CFG2 0x26
#define PKT_CFG1 0x27
#define PKT_CFG0 0x28
#define RFEND_CFG1 0x29
#define RFEND_CFG2 0x2A
#define PA_CFG2 0x2B
#define PA_CFG1 0x2C
#define PA_CFG0 0x2D
#define PKT_LEN 0x2E
#define EXT_ADDR 0x2F
#define FIFO 0x3F
// Extended register space
#define IF_MIX_CFG 0x00
#define FREQOFF_CFG 0x01
#define FREQ2 0x0C
#define FREQ1 0x0D
#define FREQ0 0x0E
#define FS_DIG1 0x12
#define FS_DIG0 0x13
#define FS_CAL1 0x16
#define FS_CAL0 0x17
#define FS_DIVTWO 0x19
#define FS_DSM0 0x1B
#define FS_DVC0 0x1D
#define FS_PFD 0x1F
#define FS_PRE 0x20
#define FS_REG_DIV_CML 0x21
#define FS_SPARE 0x22
#define FS_VCO0 0x27
#define XOSC5 0x32
#define XOSC1 0x36
#define RSSI1 0x71
#define RSSI0 0x72
#define MARCSTATE 0x73
#define PARTNUMBER 0x8F
#define PARTVERSION 0x90
#define SERIAL_STATUS 0x91
#define MODEM_STATUS1 0x92
#define MODEM_STATUS0 0x93
#define MARC_STATUS1 0x94
#define MARC_STATUS0 0x95
#define NUM_RXBYTES 0xD7
#define FIFO_NUM_RXBYTES 0xD9
// CC1120 command strobes
#define SRES 0x30
#define SFSTXON 0x31
#define SXOFF 0x32
#define SCAL 0x33
#define SRX 0x34
#define STX 0x35
#define SIDLE 0x36
#define SAFC 0x37
#define SWOR 0x38
#define SPWD 0x39
#define SFRX 0x3A
#define SFTX 0x3B
#define SWORRST 0x3C
#define SNOP 0x3D
#endif // CC1120_H
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