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tinySA/si4432.c

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/* Copyright (c) 2014-2015, TAKAHASHI Tomohiro (TTRFTECH) edy555@gmail.com
* All rights reserved.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* The software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include "ch.h"
#include "hal.h"
#include "nanovna.h"
#include <math.h>
#include "si4432.h"
#define CS_SI0_HIGH palSetPad(GPIOC, GPIO_RX_SEL)
#define CS_SI1_HIGH palSetPad(GPIOC, GPIO_LO_SEL)
#define CS_PE_HIGH palSetPad(GPIOC, GPIO_PE_SEL)
#define RF_POWER_HIGH palSetPad(GPIOB, GPIO_RF_PWR)
#define CS_SI0_LOW palClearPad(GPIOC, GPIO_RX_SEL)
#define CS_SI1_LOW palClearPad(GPIOC, GPIO_LO_SEL)
#define CS_PE_LOW palClearPad(GPIOC, GPIO_PE_SEL)
#define SPI2_CLK_HIGH palSetPad(GPIOB, GPIO_SPI2_CLK)
#define SPI2_CLK_LOW palClearPad(GPIOB, GPIO_SPI2_CLK)
#define SPI2_SDI_HIGH palSetPad(GPIOB, GPIO_SPI2_SDI)
#define SPI2_SDI_LOW palClearPad(GPIOB, GPIO_SPI2_SDI)
#define SPI2_SDO ((palReadPort(GPIOB) & (1<<GPIO_SPI2_SDO))?1:0)
//#define MAXLOG 1024
//unsigned char SI4432_logging[MAXLOG];
//volatile int log_index = 0;
//#define SI4432_log(X) { if (log_index < MAXLOG) SI4432_logging[log_index++] = X; }
#define SI4432_log(X)
void shiftOut(uint8_t val)
{
uint8_t i;
SI4432_log(SI4432_Sel);
SI4432_log(val);
for (i = 0; i < 8; i++) {
if (val & (1 << (7 - i)))
SPI2_SDI_HIGH;
else
SPI2_SDI_LOW;
SPI2_CLK_HIGH;
SPI2_CLK_LOW;
}
}
uint8_t shiftIn(void) {
uint8_t value = 0;
uint8_t i;
for (i = 0; i < 8; ++i) {
SPI2_CLK_HIGH;
value |= SPI2_SDO << (7 - i);
SPI2_CLK_LOW;
}
return value;
}
const int SI_nSEL[3] = { GPIO_RX_SEL, GPIO_LO_SEL, 0}; // #3 is dummy!!!!!!
volatile int SI4432_Sel = 0; // currently selected SI4432
// volatile int SI4432_guard = 0;
#ifdef __SI4432_H__
#define SELECT_DELAY 10
void SI4432_Write_Byte(byte ADR, byte DATA )
{
// if (SI4432_guard)
// while(1) ;
// SI4432_guard = 1;
SPI2_CLK_LOW;
palClearPad(GPIOC, SI_nSEL[SI4432_Sel]);
// chThdSleepMicroseconds(SELECT_DELAY);
ADR |= 0x80 ; // RW = 1
shiftOut( ADR );
shiftOut( DATA );
palSetPad(GPIOC, SI_nSEL[SI4432_Sel]);
// SI4432_guard = 0;
}
void SI4432_Write_3_Byte(byte ADR, byte DATA1, byte DATA2, byte DATA3 )
{
// if (SI4432_guard)
// while(1) ;
// SI4432_guard = 1;
SPI2_CLK_LOW;
palClearPad(GPIOC, SI_nSEL[SI4432_Sel]);
// chThdSleepMicroseconds(SELECT_DELAY);
ADR |= 0x80 ; // RW = 1
shiftOut( ADR );
shiftOut( DATA1 );
shiftOut( DATA2 );
shiftOut( DATA3 );
palSetPad(GPIOC, SI_nSEL[SI4432_Sel]);
// SI4432_guard = 0;
}
byte SI4432_Read_Byte( byte ADR )
{
byte DATA ;
// if (SI4432_guard)
// while(1) ;
// SI4432_guard = 1;
SPI2_CLK_LOW;
palClearPad(GPIOC, SI_nSEL[SI4432_Sel]);
shiftOut( ADR );
DATA = shiftIn();
palSetPad(GPIOC, SI_nSEL[SI4432_Sel]);
// SI4432_guard = 0;
return DATA ;
}
void SI4432_Reset(void)
{
int count = 0;
SI4432_Read_Byte ( 0x03 ); // Clear pending interrupts
SI4432_Read_Byte ( 0x04 );
// always perform a system reset (don't send 0x87)
SI4432_Write_Byte( 0x07, 0x80);
chThdSleepMilliseconds(50);
// wait for chiprdy bit
while (count++ < 100 && ( SI4432_Read_Byte ( 0x04 ) & 0x02 ) == 0) {
chThdSleepMilliseconds(10);
}
}
void SI4432_Drive(int d)
{
SI4432_Write_Byte(0x6D, (byte) (0x18+(d & 7)));
}
void SI4432_Transmit(int d)
{
int count = 0;
SI4432_Write_Byte(0x6D, (byte) (0x18+(d & 7)));
if (( SI4432_Read_Byte ( 0x02 ) & 0x03 ) == 2)
return; // Already in transmit mode
chThdSleepMilliseconds(20);
SI4432_Write_Byte( 0x07, 0x03);
chThdSleepMilliseconds(20);
SI4432_Write_Byte( 0x07, 0x0b);
chThdSleepMilliseconds(30);
while (count++ < 100 && ( SI4432_Read_Byte ( 0x02 ) & 0x03 ) != 2) {
chThdSleepMilliseconds(10);
}
}
void SI4432_Receive(void)
{
int count = 0;
if (( SI4432_Read_Byte ( 0x02 ) & 0x03 ) == 1)
return; // Already in receive mode
chThdSleepMilliseconds(20);
SI4432_Write_Byte( 0x07, 0x03);
chThdSleepMilliseconds(20);
SI4432_Write_Byte( 0x07, 0x07);
chThdSleepMilliseconds(30);
while (count++ < 100 && ( SI4432_Read_Byte ( 0x02 ) & 0x03 ) != 1) {
chThdSleepMilliseconds(5);
}
}
// User asks for an RBW of WISH, go through table finding the last triple
// for which WISH is greater than the first entry, use those values,
// Return the first entry of the following triple for the RBW actually achieved
static const short RBW_choices[] =
{ // Each quadrupple is: ndec, fils, WISH*10, corr*10
5,1,26,-5,
5,2,28,-5,
5,3,31,0,
5,4,32,0,
5,5,37,0,
5,6,42,0,
5,7,45,5,
4,1,49,5,
4,2,54,-5,
4,3,59,-5,
4,4,61,-5,
4,5,72,0,
4,6,82,0,
4,7,88,-5,
3,1,95,0,
3,2,106,0,
3,3,115,0,
3,4,121,-5,
3,5,142,0,
3,6,162,0,
3,7,175,0,
2,1,189,0,
2,2,210,-5,
2,3,227,0,
2,4,240,-5,
2,5,282,0,
2,6,322,0,
2,7,347,0,
1,1,377,0,
1,2,417,-5,
1,3,452,0,
1,4,479,-5,
1,5,562,0,
1,6,641,0,
1,7,692,0,
0,1,752,-5,
0,2,832,-5,
0,3,900,0,
0,4,953,-5,
0,5,1121,0,
0,6,1279,0,
0,7,1379,0,
1,4,1428,15,
1,5,1678,20,
1,9,1811,-55,
0,15,1915,-105,
0,1,2251,15,
0,2,2488,20,
0,3,2693,20,
0,4,2849,15,
0,8,3355,-15,
0,9,3618,-55,
0,10,4202,-15,
0,11,4684,-15,
0,12,5188,-20,
0,13,5770,-15,
0,14,6207,-10,
};
static float SI4432_RSSI_correction = -120.0;
float SI4432_SET_RBW(float w) {
uint8_t dwn3=0;
int32_t WISH = (uint32_t)(w * 10.0);
uint8_t ndec, fils, i;
if (WISH > 6207) WISH=6207; // Final value in RBW_choices[]
if (WISH > 1379) dwn3 = 1 ;
for (i=3; i<sizeof(RBW_choices)/sizeof(RBW_choices[0]); i+=4)
if (WISH <= RBW_choices[i-1]) break;
ndec = RBW_choices[i-3];
fils = RBW_choices[i-2];
WISH = RBW_choices[i-1]; // RBW achieved by Si4432 in Hz
SI4432_RSSI_correction = RBW_choices[i]/10.0 - 120.0;
uint8_t BW = (dwn3 << 7) | (ndec << 4) | fils ;
SI4432_Write_Byte(0x1C , BW ) ;
return (((float)WISH) / 10.0) ;
}
float SI4432_force_RBW(int i)
{
return(SI4432_SET_RBW((float)(RBW_choices[i*4+2]/10.0)));
}
float SI4432_RBW_table(int i){
if (i < 0)
return 0;
if (i * 4 >= (int)(sizeof RBW_choices) / 2 )
return 0;
return(RBW_choices[i*4-1]);
}
int setting_frequency_10mhz = 10000000;
void set_10mhz(int f)
{
setting_frequency_10mhz = f;
}
void SI4432_Set_Frequency ( long Freq ) {
int hbsel;
long Carrier;
if (Freq >= 480000000) {
hbsel = 1;
Freq = Freq / 2;
} else {
hbsel = 0;
}
int sbsel = 1;
long N = Freq / setting_frequency_10mhz;
Carrier = ( 4 * ( Freq - N * setting_frequency_10mhz )) / 625;
int Freq_Band = ( N - 24 ) | ( hbsel << 5 ) | ( sbsel << 6 );
#if 0
SI4432_Write_Byte ( 0x75, Freq_Band );
SI4432_Write_Byte ( 0x76, (Carrier>>8) & 0xFF );
SI4432_Write_Byte ( 0x77, Carrier & 0xFF );
#else
SI4432_Write_3_Byte ( 0x75, Freq_Band, (Carrier>>8) & 0xFF, Carrier & 0xFF );
#endif
}
int actualStepDelay = 1500;
//extern int setting.repeat;
float SI4432_RSSI(uint32_t i, int s)
{
(void) i;
int32_t RSSI_RAW;
(void) i;
// SEE DATASHEET PAGE 61
#ifdef USE_SI4463
if (SI4432_Sel == 2) {
RSSI_RAW = Si446x_getRSSI();
} else
#endif
//START_PROFILE
SI4432_Sel = s;
if (actualStepDelay)
my_microsecond_delay(actualStepDelay);
// chThdSleepMicroseconds(actualStepDelay);
i = setting.repeat;
RSSI_RAW = 0;
again:
RSSI_RAW += ((unsigned int)SI4432_Read_Byte( 0x26 )) << 4 ;
i--;
if (i > 0) {
my_microsecond_delay(100);
goto again;
}
if (setting.repeat > 1)
RSSI_RAW = RSSI_RAW / setting.repeat;
// if (MODE_INPUT(setting.mode) && RSSI_RAW == 0)
// SI4432_Init();
float dBm = ((float)RSSI_RAW)/32.0 + SI4432_RSSI_correction;
#ifdef __SIMULATION__
dBm = Simulated_SI4432_RSSI(i,s);
#endif
//STOP_PROFILE
// Serial.println(dBm,2);
return dBm ;
}
void SI4432_Sub_Init(void)
{
SI4432_Reset();
SI4432_Write_Byte(0x69, 0x60); //AGC override according to WBS3
#if 0 // Not sure if these add any value
//set VCO and PLL Only for SI4432 V2
SI4432_Write_Byte(0x72, 0x1F); //write 0x1F to the Frequency Deviation register
// VCO tuning registers
SI4432_Write_Byte(0x5A, 0x7F); //write 0x7F to the VCO Current Trimming register
SI4432_Write_Byte(0x58, 0x80); //write 0xD7 to the ChargepumpCurrentTrimmingOverride register
SI4432_Write_Byte(0x59, 0x40); //write 0x40 to the Divider Current Trimming register
#endif
#if 0
//set the AGC, BAD FOR PERFORMANCE!!!!!!
SI4432_Write_Byte(0x6A, 0x0B); //write 0x0B to the AGC Override 2 register
//set ADC reference voltage to 0.9V, BAD FOR PERFORMANCE!!!!!!
SI4432_Write_Byte(0x68, 0x04); //write 0x04 to the Deltasigma ADC Tuning 2 register
SI4432_Write_Byte(0x1F, 0x03); //write 0x03 to the Clock Recovery Gearshift Override register
#endif
SI4432_Write_Byte(0x05, 0x0);
SI4432_Write_Byte(0x06, 0x0);
// Enable receiver chain
// SI4432_Write_Byte(0x07, 0x05);
// Clock Recovery Gearshift Value
SI4432_Write_Byte(0x1F, 0x00);
// IF Filter Bandwidth
SI4432_SET_RBW(10) ;
// // Register 0x75 Frequency Band Select
// byte sbsel = 1 ; // recommended setting
// byte hbsel = 0 ; // low bands
// byte fb = 19 ; // 430<33>439.9 MHz
// byte FBS = (sbsel << 6 ) | (hbsel << 5 ) | fb ;
// SI4432_Write_Byte(0x75, FBS) ;
SI4432_Write_Byte(0x75, 0x46) ;
// Register 0x76 Nominal Carrier Frequency
// WE USE 433.92 MHz
// Si443x-Register-Settings_RevB1.xls
// SI4432_Write_Byte(0x76, 0x62) ;
SI4432_Write_Byte(0x76, 0x00) ;
// Register 0x77 Nominal Carrier Frequency
SI4432_Write_Byte(0x77, 0x00) ;
// RX MODEM SETTINGS
SI4432_Write_3_Byte(0x1C, 0x81, 0x3C, 0x02) ;
// SI4432_Write_Byte(0x1C, 0x81) ;
// SI4432_Write_Byte(0x1D, 0x3C) ;
// SI4432_Write_Byte(0x1E, 0x02) ;
SI4432_Write_Byte(0x1F, 0x03) ;
// SI4432_Write_Byte(0x20, 0x78) ;
SI4432_Write_3_Byte(0x21, 0x01, 0x11, 0x11) ;
// SI4432_Write_Byte(0x21, 0x01) ;
// SI4432_Write_Byte(0x22, 0x11) ;
// SI4432_Write_Byte(0x23, 0x11) ;
SI4432_Write_Byte(0x24, 0x01) ;
SI4432_Write_Byte(0x25, 0x13) ;
SI4432_Write_Byte(0x2A, 0xFF) ;
SI4432_Write_3_Byte(0x2C, 0x28, 0x0c, 0x28) ;
// SI4432_Write_Byte(0x2C, 0x28) ;
// SI4432_Write_Byte(0x2D, 0x0C) ;
// SI4432_Write_Byte(0x2E, 0x28) ;
SI4432_Write_Byte(0x69, 0x60); // AGC, no LNA, fast gain increment
// GPIO automatic antenna switching
SI4432_Write_Byte(0x0B, 0x12) ; // Normal
SI4432_Write_Byte(0x0C, 0x15) ;
}
#define V0_XTAL_CAPACITANCE 0x64
#define V1_XTAL_CAPACITANCE 0x64
void SI4432_Init()
{
palClearPad(GPIOB, GPIO_RF_PWR);
chThdSleepMilliseconds(20);
palSetPad(GPIOB, GPIO_RF_PWR);
chThdSleepMilliseconds(20);
//DebugLine("IO set");
SI4432_Sel = 0;
SI4432_Sub_Init();
SI4432_Sel = 1;
SI4432_Sub_Init();
//DebugLine("1 init done");
SI4432_Sel = 0;
// SI4432_Receive();// Enable receiver chain
// SI4432_Write_Byte(0x09, V0_XTAL_CAPACITANCE);// Tune the crystal
SI4432_Set_Frequency(433800000);
SI4432_Write_Byte(0x0D, 0x1F) ; // Set GPIO2 output to ground
SI4432_Sel = 1;
// SI4432_Write_Byte(0x09, V1_XTAL_CAPACITANCE);// Tune the crystal
SI4432_Set_Frequency(443800000);
SI4432_Write_Byte(0x0D, 0x1F) ; // Set GPIO2 output to ground
// SI4432_Write_Byte(0x6D, 0x1C);//Set low power
// SI4432_Transmit(0);
// SI4432_Write_Byte(0x0D, 0xC0) ; // Set GPIO2 maximumdrive and clock output
// SI4432_Write_Byte(0x0A, 0x02) ; // Set 10MHz output
}
void SI4432_SetReference(int freq)
{
SI4432_Sel = 1; //Select Lo module
if (freq < 0 || freq > 7 ) {
SI4432_Write_Byte(0x0D, 0x1F) ; // Set GPIO2 to GND
} else {
SI4432_Write_Byte(0x0D, 0xC0) ; // Set GPIO2 maximumdrive and clock output
SI4432_Write_Byte(0x0A, freq & 0x07) ; // Set GPIO2 frequency
}
}
//------------PE4302 -----------------------------------------------
// Comment out this define to use parallel mode PE4302
#define PE4302_en 10
void PE4302_init(void) {
CS_PE_LOW;
}
#define PE4302_DELAY 100
#if 0
void PE4302_shiftOut(uint8_t val)
{
uint8_t i;
SI4432_log(SI4432_Sel);
SI4432_log(val);
for (i = 0; i < 8; i++) {
if (val & (1 << (7 - i)))
SPI2_SDI_HIGH;
else
SPI2_SDI_LOW;
// chThdSleepMicroseconds(PE4302_DELAY);
SPI2_CLK_HIGH;
// chThdSleepMicroseconds(PE4302_DELAY);
SPI2_CLK_LOW;
// chThdSleepMicroseconds(PE4302_DELAY);
}
}
#endif
void PE4302_Write_Byte(unsigned char DATA )
{
// chThdSleepMicroseconds(PE4302_DELAY);
SPI2_CLK_LOW;
// chThdSleepMicroseconds(PE4302_DELAY);
// PE4302_shiftOut(DATA);
shiftOut(DATA);
// chThdSleepMicroseconds(PE4302_DELAY);
CS_PE_HIGH;
// chThdSleepMicroseconds(PE4302_DELAY);
CS_PE_LOW;
// chThdSleepMicroseconds(PE4302_DELAY);
}
#endif
#if 0
//-----------------SI4432 dummy------------------
void SI4432_Write_Byte(unsigned char ADR, unsigned char DATA ) {}
unsigned char SI4432_Read_Byte(unsigned char ADR) {return ADR;}
float SI4432_SET_RBW(float WISH) {return (WISH > 600.0?600: (WISH<3.0?3:WISH));}
void SI4432_SetReference(int p) {}
void SI4432_Set_Frequency(long f) {}
void PE4302_Write_Byte(unsigned char DATA ) {}
void PE4302_init(void) {}
#endif
#ifdef __SIMULATION__
unsigned long seed = 123456789;
extern float actual_rbw;
float myfrand(void)
{
seed = (unsigned int) (1103515245 * seed + 12345) ;
return ((float) seed) / 1000000000.0;
}
#define NOISE ((myfrand()-2) * 2) // +/- 4 dBm noise
extern int settingAttenuate;
//#define LEVEL(i, f, v) (v * (1-(fabs(f - frequencies[i])/actual_rbw/1000)))
float LEVEL(uint32_t i, uint32_t f, int v)
{
float dv;
float df = fabs((float)f - (float)i);
if (df < actual_rbw*1000)
dv = df/(actual_rbw*1000);
else
dv = 1 + 50*(df - actual_rbw*1000)/(actual_rbw*1000);
return (v - dv - settingAttenuate);
}
float Simulated_SI4432_RSSI(uint32_t i, int s)
{
SI4432_Sel = s;
float v = -100 + log10(actual_rbw)*10 + NOISE;
if(s == 0) {
v = fmax(LEVEL(i,10000000,-20),v);
v = fmax(LEVEL(i,20000000,-40),v);
v = fmax(LEVEL(i,30000000,-30),v);
v = fmax(LEVEL(i,40000000,-90),v);
} else {
v = fmax(LEVEL(i,320000000,-20),v);
v = fmax(LEVEL(i,340000000,-40),v);
v = fmax(LEVEL(i,360000000,-30),v);
v = fmax(LEVEL(i,380000000,-90),v);
}
return(v);
}
#endif
//------------------------------- ADF4351 -------------------------------------
#ifdef __ULTRA_SA__
#define bitRead(value, bit) (((value) >> (bit)) & 0x01)
#define bitSet(value, bit) ((value) |= (1UL << (bit)))
#define bitClear(value, bit) ((value) &= ~(1UL << (bit)))
#define bitWrite(value, bit, bitvalue) (bitvalue ? bitSet(value, bit) : bitClear(value, bit))
#define CS_ADF0_HIGH palSetPad(GPIOA, 9)
#define CS_ADF1_HIGH palSetPad(GPIOA, 10)
#define CS_ADF0_LOW palClearPad(GPIOA, 9)
#define CS_ADF1_LOW palClearPad(GPIOA, 10)
#define SPI3_CLK_HIGH palSetPad(GPIOA, 1)
#define SPI3_CLK_LOW palClearPad(GPIOA, 1)
#define SPI3_SDI_HIGH palSetPad(GPIOA, 2)
#define SPI3_SDI_LOW palClearPad(GPIOA, 2)
void ADF_shiftOut(uint8_t val)
{
uint8_t i;
for (i = 0; i < 8; i++) {
if (val & (1 << (7 - i)))
SPI3_SDI_HIGH;
else
SPI3_SDI_LOW;
// chThdSleepMicroseconds(10);
SPI3_CLK_HIGH;
// chThdSleepMicroseconds(10);
SPI3_CLK_LOW;
// chThdSleepMicroseconds(10);
}
}
//unsigned long registers[6] = {0x4580A8, 0x80080C9, 0x4E42, 0x4B3, 0xBC803C, 0x580005} ;
//unsigned long registers[6] = {0x4C82C8, 0x80083E9, 0x6E42, 0x8004B3, 0x8C81FC, 0x580005} ;
//uint32_t registers[6] = {0x320000, 0x8008011, 0x4E42, 0x4B3,0x8C803C , 0x580005} ; //25 MHz ref
uint32_t registers[6] = {0xA00000, 0x8000011, 0x4E42, 0x4B3,0xDC003C , 0x580005} ; //10 MHz ref
int debug = 0;
int ADF4351_LE[2] = { 9, 10};
int ADF4351_Mux = 7;
//#define DEBUG(X) // Serial.print( X )
//#define DEBUGLN(X) Serial.println( X )
//#define DEBUGFLN(X,Y) Serial.println( X,Y )
//#define DEBUGF(X,Y) Serial.print( X,Y )
#define DEBUG(X)
#define DEBUGLN(X)
double RFout, //Output freq in MHz
#if 0 //Black modules
PFDRFout[6] = {25.0,25.0,25.0,10.0,10.0,10.0}, //Reference freq in MHz
Chrystal[6] = {25.0,25.0,25.0,10.0,10.0,10.0},
#else // Green modules
PFDRFout[6] = {10.0,10.0,10.0,10.0,10.0,10.0}, //Reference freq in MHz
Chrystal[6] = {10.0,10.0,10.0,10.0,10.0,10.0},
#endif
OutputChannelSpacing = 0.010, // = 0.01
FRACF; // Temp
unsigned int long RFint, // Output freq/10Hz
INTA, // Temp
RFcalc, //UI
MOD, //Temp
FRAC; //Temp
byte OutputDivider; // Temp
byte lock=2; //Not used
// Lock = A4
void ADF4351_Setup()
{
// palSetPadMode(GPIOA, 1, PAL_MODE_OUTPUT_PUSHPULL );
// palSetPadMode(GPIOA, 2, PAL_MODE_OUTPUT_PUSHPULL );
SPI3_CLK_HIGH;
SPI3_SDI_HIGH;
CS_ADF0_HIGH;
CS_ADF1_HIGH;
// bitSet (registers[2], 17); // R set to 8
// bitClear (registers[2], 14); // R set to 8
// while(1) {
//
ADF4351_set_frequency(0,100000000,0);
ADF4351_set_frequency(1,150000000,0);
// ADF4351_Set(0);
// ADF4351_Set(1);
// chThdSleepMilliseconds(1000);
// }
// bitSet (registers[2], 17); // R set to 8
// bitClear (registers[2], 14); // R set to 8
// for (int i=0; i<6; i++) pinMode(ADF4351_LE[i], OUTPUT); // Setup pins
// for (int i=0; i<6; i++) digitalWrite(ADF4351_LE[i], HIGH);
// pinMode(ADF4351_Mux, INPUT);
// SPI.begin(); // Init SPI bus
// SPI.beginTransaction(SPISettings(8000000, MSBFIRST, SPI_MODE0));
//SPI.setDataMode(SPI_MODE0); // CPHA = 0 Clock positive
//SPI.setBitOrder(MSBFIRST);
}
void ADF4351_WriteRegister32(int channel, const uint32_t value)
{
palClearPad(GPIOA, ADF4351_LE[channel]);
// chThdSleepMicroseconds(10);
for (int i = 3; i >= 0; i--) ADF_shiftOut((value >> (8 * i)) & 0xFF);
// chThdSleepMicroseconds(10);
palSetPad(GPIOA, ADF4351_LE[channel]);
// chThdSleepMicroseconds(10);
palClearPad(GPIOA, ADF4351_LE[channel]);
// chThdSleepMicroseconds(10);
}
void ADF4351_disable_output()
{
bitClear (registers[4], 5); // digital lock
ADF4351_Set(0);
}
void ADF4351_enable_output()
{
bitSet (registers[4], 5); // digital lock
ADF4351_Set(0);
}
void ADF4351_Set(int channel)
{ for (int i = 5; i >= 0; i--) {
ADF4351_WriteRegister32(channel, registers[i]);
// if (debug) Serial.println(registers[i],HEX);
}
}
void ADF4351_set_frequency(int channel, unsigned long freq, int drive) // freq / 10Hz
{
ADF4351_prep_frequency(channel,freq, drive);
ADF4351_Set(channel);
}
void ADF4351_spur_mode(int S)
{
if (S & 1) {
bitSet (registers[2], 29); // R set to 8
} else {
bitClear (registers[2], 29); // R set to 8
}
if (S & 2)
bitSet (registers[2], 30); // R set to 8
else
bitClear (registers[2], 30); // R set to 8
}
void ADF4351_R_counter(int R)
{
int dbl = false;
if (R < 0) {
dbl = true;
R = -R;
}
if (R<1)
return;
if (dbl) {
bitSet (registers[2], 25); // Reference doubler
} else {
bitClear (registers[2], 25); // Reference doubler
}
for (int channel=0; channel < 6; channel++) {
PFDRFout[channel] = Chrystal[channel] * (dbl?2:1) / R;
}
registers[2] &= ~ (((unsigned long)0x3FF) << 14);
registers[2] |= (((unsigned long)R) << 14);
}
void ADF4351_CP(int p)
{
registers[2] &= ~ (((unsigned long)0xF) << 9);
registers[2] |= (((unsigned long)p) << 9);
}
void ADF4351_level(int p)
{
registers[4] &= ~ (((unsigned long)0x3) << 3);
registers[4] |= (((unsigned long)p) << 3);
}
void ADF4351_channel_spacing(int spacing)
{
OutputChannelSpacing = 0.001 * spacing;
}
static uint32_t gcd(uint32_t x, uint32_t y)
{
uint32_t z;
while (y != 0) {
z = x % y;
x = y;
y = z;
}
return x;
}
void ADF4351_prep_frequency(int channel, unsigned long freq, int drive) // freq / 10Hz
{
(void)drive;
// if (channel == 0)
RFout=freq/1000000.0; // To MHz
// else
// RFout=freq/1000002.764; // To MHz
if (RFout >= 2200) {
OutputDivider = 1;
bitWrite (registers[4], 22, 0);
bitWrite (registers[4], 21, 0);
bitWrite (registers[4], 20, 0);
} else if (RFout >= 1100) {
OutputDivider = 2;
bitWrite (registers[4], 22, 0);
bitWrite (registers[4], 21, 0);
bitWrite (registers[4], 20, 1);
} else if (RFout >= 550) {
OutputDivider = 4;
bitWrite (registers[4], 22, 0);
bitWrite (registers[4], 21, 1);
bitWrite (registers[4], 20, 0);
} else if (RFout >= 275) {
OutputDivider = 8;
bitWrite (registers[4], 22, 0);
bitWrite (registers[4], 21, 1);
bitWrite (registers[4], 20, 1);
} else if (RFout >= 137.5) {
OutputDivider = 16;
bitWrite (registers[4], 22, 1);
bitWrite (registers[4], 21, 0);
bitWrite (registers[4], 20, 0);
} else if (RFout >= 68.75) {
OutputDivider = 32;
bitWrite (registers[4], 22, 1);
bitWrite (registers[4], 21, 0);
bitWrite (registers[4], 20, 1);
} else {
OutputDivider = 64;
bitWrite (registers[4], 22, 1);
bitWrite (registers[4], 21, 1);
bitWrite (registers[4], 20, 0);
}
INTA = (RFout * OutputDivider) / PFDRFout[channel];
MOD = (PFDRFout[channel] / OutputChannelSpacing) + 0.01;
// MOD = 3125;
FRACF = (((RFout * OutputDivider) / PFDRFout[channel]) - INTA) * MOD;
FRAC = round(FRACF);
while (FRAC > 4095 || MOD > 4095) {
FRAC = FRAC >> 1;
MOD = MOD >> 1;
// Serial.println( "MOD/FRAC reduced");
}
int32_t k = gcd(FRAC, MOD);
if (k > 1) {
FRAC /= k;
MOD /= k;
// Serial.print( "MOD/FRAC gcd reduced");
}
// while (denom >= (1<<20)) {
// num >>= 1;
// denom >>= 1;
// }
// if (INTA <= 75) Serial.println( "INTA <= 75");
// if (FRAC > 4095) Serial.println( "FRAC > 4095");
// if (MOD > 4095) Serial.println( "MOD > 4095");
// if (FRAC > 4095) Serial.println( "FRAC > 4095");
// if (MOD > 4095) Serial.println( "MOD > 4095");
// if (INTA > 4095) Serial.println( "INT > 4095");
if (debug) {
DEBUG(" ODIV=");
DEBUG(OutputDivider);
DEBUG(" INT=");
DEBUG(INTA);
DEBUG(" FRAC=");
DEBUG(FRAC);
DEBUG(" MOD=");
DEBUG(MOD);
DEBUG( " CalF=");
// DEBUGFLN(PFDRFout[channel] *(INTA + ((double)FRAC)/MOD)/OutputDivider,6);
// DEBUG(" FRACF=");
// DEBUGF(FRACF,6);
}
registers[0] = 0;
registers[0] = INTA << 15; // OK
FRAC = FRAC << 3;
registers[0] = registers[0] + FRAC;
if (MOD == 1) MOD = 2;
registers[1] = 0;
registers[1] = MOD << 3;
registers[1] = registers[1] + 1 ; // restore address "001"
bitSet (registers[1], 27); // Prescaler at 8/9
/*
drive = 1;
if (drive == 0) {
bitClear (registers[4], 3); // +5dBm + out
bitClear (registers[4], 4); // +5dBm
bitClear (registers[4], 6); // +5dBm - out
bitClear (registers[4], 7); // +5dBm
} else if (drive == 1) {
bitSet (registers[4], 6); // +5dBm
bitClear (registers[4], 7); // +5dBm - out
bitSet (registers[4], 3); // +5dBm
bitClear (registers[4], 4); // +5dBm + out
} else if (drive == 2) {
bitClear (registers[4], 6); // +5dBm - out
bitSet (registers[4], 7); // +5dBm
bitClear (registers[4], 3); // +5dBm + out
bitSet (registers[4], 4); // +5dBm
}
else {
bitSet (registers[4], 6); // +5dBm - out
bitSet (registers[4], 7); // +5dBm
bitSet (registers[4], 3); // +5dBm + out
bitSet (registers[4], 4); // +5dBm
}
*/
// bitSet (registers[4], 5); // enable + output
// bitClear (registers[4], 8); // enable B output
#if 0
if (FRAC == 0)
bitSet (registers[2], 8); // INT mode
else
bitClear (registers[2], 8); // INT mode
bitSet (registers[2], 13); // Double buffered
bitSet (registers[2], 28); // Digital lock == "110" sur b28 b27 b26
bitSet (registers[2], 27); // digital lock
bitClear (registers[2], 26); // digital lock
//bitSet (registers[4], 10); // Mute till lock
// bitSet (registers[3], 23); // Fast lock
#endif
// bitSet (registers[4], 10); // Mute till lock
// ADF4351_Set(channel);
}
#endif
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