f58b322bb5
* enable transparent mode * rssi ok, transmit ok, fifo ok * I see the signal * successful async rx (registers from smartrf) * refactor rfstudio register config * rewrite config, found some issues * handle G0 interrupts * g0 irq enable after cc1101 init * update cube
484 lines
16 KiB
C++
484 lines
16 KiB
C++
#include "flipper_v2.h"
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#include "cc1101-workaround/cc1101.h"
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#include "spi.h"
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#include <math.h>
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// ******************************************************************************
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#define WRITE_BURST 0x40
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#define READ_SINGLE 0x80
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#define READ_BURST 0xC0
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#define BYTES_IN_FIFO 0x7F //used to detect FIFO underflow or overflow
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/*********************ss_pin as global variable****************************** */
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/* cc1101 */
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/******************************************************************************/
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GpioPin ss_pin;
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CC1101::CC1101(GpioPin* ss_pin) {
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/*
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pinMode(gdo0_pin, OUTPUT); //GDO0 as asynchronous serial mode input
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pinMode(gdo2_pin, INPUT); //GDO2 as asynchronous serial mode output
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*/
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gpio_init(ss_pin, GpioModeOutputPushPull);
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this->ss_pin = ss_pin;
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// TODO open record
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this->miso_pin = MISO_PIN;
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this->miso_pin_record = &this->miso_pin;
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}
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//******************************************************************************
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//SpiInit
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/******************************************************************************/
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extern SPI_HandleTypeDef SPI_R;
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void CC1101::SpiInit(void) {
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//initialize spi pins
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//Enable spi master, MSB, SPI mode 0, FOSC/4
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SpiMode(0);
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CC1101_SPI_Reconfigure();
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}
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void CC1101::SpiEnd(void) {
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/*
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SPCR = ((0<<SPE) | // SPI Enable
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(0<<SPIE)| // SPI Interupt Enable
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(0<<DORD)| // Data Order (0:MSB first / 1:LSB first)
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(1<<MSTR)| // Master/Slave select
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(0<<SPR1)|(0<<SPR0)| // SPI Clock Rate ( 0 0 = osc/4; 0 1 = osc/16; 1 0 = osc/64; 1 1= 0sc/128)
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(0<<CPOL)| // Clock Polarity (0:SCK low / 1:SCK hi when idle)
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(0<<CPHA)); // Clock Phase (0:leading / 1:trailing edge sampling)
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//SPSR = (0<<SPI2X); // Double Clock Rate
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*/
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}
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/******************************************************************************
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Function: SpiMode
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*INPUT : config mode
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(0<<CPOL) | (0 << CPHA) 0
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(0<<CPOL) | (1 << CPHA) 1
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(1<<CPOL) | (0 << CPHA) 2
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(1<<CPOL) | (1 << CPHA) 3
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*OUTPUT :none
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******************************************************************************/
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void CC1101::SpiMode(uint8_t config) {
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/*
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uint8_t tmp;
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// enable SPI master with configuration byte specified
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SPCR = 0;
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SPCR = (config & 0x7F) | (1<<SPE) | (1<<MSTR);
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tmp = SPSR;
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tmp = SPDR;
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*/
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}
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/****************************************************************
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*FUNCTION NAME:SpiTransfer
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*FUNCTION :spi transfer
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*INPUT :value: data to send
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*OUTPUT :data to receive
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****************************************************************/
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uint8_t CC1101::SpiTransfer(uint8_t value) {
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uint8_t buf[1] = {value};
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uint8_t rxbuf[1] = {0};
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HAL_SPI_TransmitReceive(&SPI_R, buf, rxbuf, 1, HAL_MAX_DELAY);
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return rxbuf[0];
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}
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uint8_t last_status;
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/****************************************************************
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*FUNCTION NAME:SpiWriteReg
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*FUNCTION :CC1101 write data to register
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*INPUT :addr: register address; value: register value
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*OUTPUT :none
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****************************************************************/
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void CC1101::SpiWriteReg(uint8_t addr, uint8_t value) {
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gpio_write(ss_pin, false);
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while(gpio_read(this->miso_pin_record))
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;
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last_status = SpiTransfer(addr);
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last_status = SpiTransfer(value);
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gpio_write(ss_pin, true);
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}
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/****************************************************************
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*FUNCTION NAME:SpiWriteBurstReg
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*FUNCTION :CC1101 write burst data to register
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*INPUT :addr: register address; buffer:register value array; num:number to write
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*OUTPUT :none
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****************************************************************/
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void CC1101::SpiWriteBurstReg(uint8_t addr, uint8_t* buffer, uint8_t num) {
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gpio_write(ss_pin, false);
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while(gpio_read(this->miso_pin_record))
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;
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last_status = SpiTransfer(addr | WRITE_BURST);
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for(uint8_t i = 0; i < num; i++) {
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last_status = SpiTransfer(buffer[i]);
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}
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gpio_write(ss_pin, true);
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}
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/****************************************************************
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*FUNCTION NAME:SpiStrobe
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*FUNCTION :CC1101 Strobe
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*INPUT :strobe: command; //refer define in CC1101.h//
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*OUTPUT :none
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****************************************************************/
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void CC1101::SpiStrobe(uint8_t strobe) {
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gpio_write(ss_pin, false);
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while(gpio_read(this->miso_pin_record))
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;
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last_status = SpiTransfer(strobe);
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gpio_write(ss_pin, true);
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}
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/****************************************************************
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*FUNCTION NAME:SpiReadReg
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*FUNCTION :CC1101 read data from register
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*INPUT :addr: register address
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*OUTPUT :register value
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****************************************************************/
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uint8_t CC1101::SpiReadReg(uint8_t addr) {
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gpio_write(ss_pin, false);
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while(gpio_read(this->miso_pin_record))
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;
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last_status = SpiTransfer(addr | READ_SINGLE);
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uint8_t value = SpiTransfer(0);
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gpio_write(ss_pin, true);
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return value;
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}
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/****************************************************************
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*FUNCTION NAME:SpiReadBurstReg
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*FUNCTION :CC1101 read burst data from register
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*INPUT :addr: register address; buffer:array to store register value; num: number to read
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*OUTPUT :none
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****************************************************************/
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void CC1101::SpiReadBurstReg(uint8_t addr, uint8_t* buffer, uint8_t num) {
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gpio_write(ss_pin, false);
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while(gpio_read(this->miso_pin_record))
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;
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last_status = SpiTransfer(addr | READ_BURST);
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for(uint8_t i = 0; i < num; i++) {
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buffer[i] = SpiTransfer(0);
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}
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gpio_write(ss_pin, true);
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}
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/****************************************************************
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*FUNCTION NAME:SpiReadStatus
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*FUNCTION :CC1101 read status register
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*INPUT :addr: register address
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*OUTPUT :status value
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****************************************************************/
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uint8_t CC1101::SpiReadStatus(uint8_t addr) {
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gpio_write(ss_pin, false);
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while(gpio_read(this->miso_pin_record))
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;
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last_status = SpiTransfer(addr | READ_BURST);
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uint8_t value = SpiTransfer(0);
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gpio_write(ss_pin, true);
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return value;
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}
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/****************************************************************
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*FUNCTION NAME:Reset
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*FUNCTION :CC1101 reset //details refer datasheet of CC1101/CC1100//
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*INPUT :none
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*OUTPUT :none
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****************************************************************/
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void CC1101::Reset(void) {
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gpio_write(ss_pin, false);
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delay(1);
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gpio_write(ss_pin, true);
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delay(1);
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gpio_write(ss_pin, false);
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while(gpio_read(this->miso_pin_record))
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;
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last_status = SpiTransfer(CC1101_SRES);
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while(gpio_read(this->miso_pin_record))
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;
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gpio_write(ss_pin, true);
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}
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bool CC1101::SpiSetRegValue(uint8_t reg, uint8_t value, uint8_t msb, uint8_t lsb) {
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if((msb > 7) || (lsb > 7) || (lsb > msb)) {
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return false;
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}
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uint8_t current_value = SpiReadReg(reg);
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uint8_t mask = ~((0b11111111 << (msb + 1)) | (0b11111111 >> (8 - lsb)));
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uint8_t new_value = (current_value & ~mask) | (value & mask);
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SpiWriteReg(reg, new_value);
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return true;
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}
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/****************************************************************
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*FUNCTION NAME:Init
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*FUNCTION :CC1101 initialization
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*INPUT :none
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*OUTPUT :none
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****************************************************************/
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uint8_t CC1101::Init(void) {
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#ifdef CC1101_DEBUG
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printf("Init SPI...\n");
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#endif
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SpiInit(); //spi initialization
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gpio_write(ss_pin, true);
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// gpio_write(SCK_PIN, true);
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// gpio_write(MOSI_PIN, false);
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#ifdef CC1101_DEBUG
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printf("Reset CC1101...\n");
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#endif
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Reset(); // CC1101 reset
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osDelay(150);
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uint8_t partnum __attribute__((unused));
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uint8_t version;
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partnum = SpiReadStatus(CC1101_PARTNUM);
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version = SpiReadStatus(CC1101_VERSION);
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#ifdef CC1101_DEBUG
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printf("Partnum:0x%02X, Version:0x%02X\n", partnum, version);
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#endif
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#ifdef CC1101_DEBUG
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printf("Init CC1101...");
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#endif
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// RegConfigSettings(); //CC1101 register config
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#ifdef CC1101_DEBUG
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printf("Done!\n");
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#endif
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return version;
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}
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/****************************************************************
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*FUNCTION NAME:SetMod
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*FUNCTION :CC1101 modulation type
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*INPUT :byte mode
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*OUTPUT :none
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****************************************************************/
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void CC1101::SetMod(uint8_t mode) {
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SpiWriteReg(CC1101_MDMCFG2, mode); //no sync/preamble; ASK/OOK only support up to -1dbm
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if((mode | 0x30) == ASK) {
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SpiWriteReg(CC1101_FREND0, 0x11); //use first up to PATABLE(0)
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uint8_t PaTabel[8] = {0x00, POWER, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
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SpiWriteBurstReg(CC1101_PATABLE, PaTabel, 8); //CC1101 PATABLE config
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} else {
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SpiWriteReg(CC1101_FREND0, 0x10); //use first up to PATABLE(0)
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uint8_t PaTabel[8] = {POWER, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
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SpiWriteBurstReg(CC1101_PATABLE, PaTabel, 8); //CC1101 PATABLE config
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}
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#ifdef CC1101_DEBUG
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switch(mode | 0x30) {
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case GFSK: {
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printf("CC1101 Modulation: GFSK");
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break;
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}
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case MSK: {
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printf("CC1101 Modulation: MSK");
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break;
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}
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case ASK: {
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printf("CC1101 Modulation: ASK/OOK");
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break;
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}
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case FSK2: {
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printf("CC1101 Modulation: 2-FSK");
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break;
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}
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case FSK4: {
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printf("CC1101 Modulation: 4-FSK");
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break;
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}
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default: //default to GFSK
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{
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printf("Modulation mode not supported");
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break;
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}
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}
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printf("\n");
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#endif
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}
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/****************************************************************
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*FUNCTION NAME:RegConfigSettings
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*FUNCTION :CC1101 register config //details refer datasheet of CC1101/CC1100//
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*INPUT :none
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*OUTPUT :none
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****************************************************************/
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void CC1101::RegConfigSettings(void) {
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SpiWriteReg(CC1101_FSCTRL1, 0x06); //IF frequency
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SpiWriteReg(CC1101_FSCTRL0, 0x00); //frequency offset before synthesizer
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SpiWriteReg(CC1101_MDMCFG4, 0xCC); // RX filter bandwidth 100k(0xcc)
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SpiWriteReg(
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CC1101_MDMCFG3, 0x43); //datarate config 512kBaud for the purpose of fast rssi measurement
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SpiWriteReg(CC1101_MDMCFG1, 0x21); //FEC preamble etc. last 2 bits for channel spacing
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SpiWriteReg(CC1101_MDMCFG0, 0xF8); //100khz channel spacing
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//CC1101_CHANNR moved to SetChannel func
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//SpiWriteReg(CC1101_DEVIATN, 0x47);
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SpiWriteReg(
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CC1101_MCSM0, 0x18); // calibrate when going from IDLE to RX or TX ; 149 - 155 μs timeout
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SpiWriteReg(CC1101_FOCCFG, 0x16); //frequency compensation
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//SpiWriteReg(CC1101_BSCFG, 0x1C); //bit synchronization config
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SpiWriteReg(CC1101_AGCCTRL2, 0x43);
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SpiWriteReg(CC1101_AGCCTRL1, 0x49);
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SpiWriteReg(CC1101_AGCCTRL0, 0x91);
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//freq synthesizer calibration
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SpiWriteReg(CC1101_FSCAL3, 0xEA);
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SpiWriteReg(CC1101_FSCAL2, 0x2A);
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SpiWriteReg(CC1101_FSCAL1, 0x00);
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SpiWriteReg(CC1101_FSCAL0, 0x1F);
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SpiWriteReg(CC1101_TEST2, 0x81);
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SpiWriteReg(CC1101_TEST1, 0x35);
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SpiWriteReg(CC1101_TEST0, 0x0B); //should be 0x0B for lower than 430.6MHz and 0x09 for higher
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//SpiWriteReg(CC1101_FREND1, 0x56);
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//SpiWriteReg(CC1101_IOCFG2, 0x0B); //serial clock.synchronous to the data in synchronous serial mode
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//SpiWriteReg(CC1101_IOCFG0, 0x06); //asserts when sync word has been sent/received, and de-asserts at the end of the packet
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SpiWriteReg(CC1101_IOCFG2, 0x0D); //data output pin for asynchronous mode
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SpiWriteReg(
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CC1101_IOCFG0,
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0x2E); //High impedance (3-state), GDO0 configed as data input for asynchronous mode
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//SpiWriteReg(CC1101_PKTCTRL0, 0x05); //whitening off;CRC Enable；variable length packets, packet length configured by the first byte after sync word
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SpiWriteReg(
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CC1101_PKTCTRL0, 0x33); //whitening off; asynchronous serial mode; CRC diable；reserved
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//SpiWriteReg(CC1101_PKTLEN, 0x3D); //61 bytes max length
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SpiWriteReg(
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CC1101_FIFOTHR,
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0x47); //Adc_retention enabled for RX filter bandwidth less than 325KHz; defalut fifo threthold.
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}
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/****************************************************************
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*FUNCTION NAME:SetFreq
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*FUNCTION :SetFreq
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*INPUT :Freq2, Freq1, Freq0
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*OUTPUT :none
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****************************************************************/
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void CC1101::SetFreq(uint8_t freq2, uint8_t freq1, uint8_t freq0) {
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SpiWriteReg(CC1101_FREQ2, freq2);
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SpiWriteReg(CC1101_FREQ1, freq1);
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SpiWriteReg(CC1101_FREQ0, freq0);
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}
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/****************************************************************
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*FUNCTION NAME:SetChannel
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*FUNCTION :SetChannel
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*INPUT :int channel
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*OUTPUT :none
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****************************************************************/
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void CC1101::SetChannel(int channel) {
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#ifdef CC1101_DEBUG
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printf("Set CC1101 channel to: %d \n", channel);
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#endif
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SpiWriteReg(CC1101_CHANNR, (uint8_t)channel); //related to channel numbers
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}
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/****************************************************************
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*FUNCTION NAME:SetReceive
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*FUNCTION :SetReceive
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*INPUT :none
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*OUTPUT :none
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****************************************************************/
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void CC1101::SetReceive(void) {
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SpiStrobe(CC1101_SRX);
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while(SpiReadStatus(CC1101_MARCSTATE) ^ CC1101_STATUS_RX) {
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// delay(1);
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// printf("wait status\n");
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}
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}
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/****************************************************************
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*FUNCTION NAME:SetTransmit
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*FUNCTION :
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*INPUT :none
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*OUTPUT :none
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****************************************************************/
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void CC1101::SetTransmit(void) {
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SpiStrobe(CC1101_STX);
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while(SpiReadStatus(CC1101_MARCSTATE) ^ CC1101_STATUS_TX)
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;
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}
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//cc1101 cc1101;
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bool CC1101::setRxBandwidth(float bandwidth) {
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if(bandwidth < 58.0 || bandwidth > 821.0) return false;
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// set mode to standby
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SpiStrobe(CC1101_SIDLE);
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// calculate exponent and mantissa values
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for(int8_t e = 3; e >= 0; e--) {
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for(int8_t m = 3; m >= 0; m--) {
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float point = (F_OSC) / (8 * (m + 4) * ((uint32_t)1 << e));
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if(fabs((bandwidth * 1000.0) - point) <= 1000) {
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// set Rx channel filter bandwidth
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SpiSetRegValue(CC1101_MDMCFG4, (e << 6) | (m << 4), 7, 4);
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return true;
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}
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}
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}
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return false;
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}
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static void getExpMant(
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float target,
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uint16_t mantOffset,
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uint8_t divExp,
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uint8_t expMax,
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uint8_t& exp,
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uint8_t& mant) {
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// get table origin point (exp = 0, mant = 0)
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float origin = (mantOffset * F_OSC) / ((uint32_t)1 << divExp);
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// iterate over possible exponent values
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for(int8_t e = expMax; e >= 0; e--) {
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// get table column start value (exp = e, mant = 0);
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float intervalStart = ((uint32_t)1 << e) * origin;
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// check if target value is in this column
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if(target >= intervalStart) {
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// save exponent value
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exp = e;
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// calculate size of step between table rows
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float stepSize = intervalStart / (float)mantOffset;
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// get target point position (exp = e, mant = m)
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mant = ((target - intervalStart) / stepSize);
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// we only need the first match, terminate
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return;
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}
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}
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}
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bool CC1101::setBitRate(float bitrate) {
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if(bitrate < 0.6 || bitrate > 500.0) return false;
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// set mode to standby
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SpiStrobe(CC1101_SIDLE);
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// calculate exponent and mantissa values
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uint8_t e = 0;
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uint8_t m = 0;
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getExpMant(bitrate * 1000.0, 256, 28, 14, e, m);
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// set bit rate value
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SpiSetRegValue(CC1101_MDMCFG4, e, 3, 0);
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SpiSetRegValue(CC1101_MDMCFG3, m, 7, 0);
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return true;
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}
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