Falanqaynta Jaantuska Raadiyaha oo ku salaysan RDA5807M

Jaantuska jaantuska wareeggan waa Module-ka qaataha raadiyaha FM la dhisay hareeraha RDA5807M sida IC-ga asaasiga ah. Waxay inta badan fulisaa Soo dhaweynta calaamadaha FM, soo saarista maqalka, iyo hawlaha xakamaynta aasaasiga ahFalanqaynta hoose waxay u qaybsan tahay qaybaha asaasiga ah, modules-yada shaqada, iyo xuduudaha naqshadaynta muhiimka ah.

1. Qaybaha Muhiimka ah iyo Hawlaha Biinanka

IC-ga Aasaasiga ah: RDA5807M

The RDA5807M waa qalab casri ah oo loogu talagalay soo dhaweeyaha raadiyaha FM-ka oo si heer sare ah isugu xiran oo taageera soo dhaweeyaha baahinta FM-ka iyo Xakamaynta taxanaha ah ee I2C / SDIOIyada oo ku saleysan jaantuska, biinanka muhiimka ah iyo xiriirkooda ayaa lagu soo koobay hoos:

2. Kala-goynta Module-ka Shaqada

2.1 Module Supply Power

• Danab Input: 3.3V DC (la habeeyey)
• Qaybaha Shaandhaynta:
  • C8 (0.1µF), C9 (0.1µF): Kaabayaasha kala-furfurka ee soo noqnoqda badan ee u dhexeeya VDD iyo GND, oo xakameynaya buuqa awoodda
  • C10 (22µF): Kaaliyaha elektaroonigga badan ee loogu talagalay shaandhaynta soo noqnoqoshada hoose iyo kaydinta tamarta
  • C26 (0.1µF): Kala furfurid dheeraad ah si loo sii wanaajiyo xasilloonida awoodda

Shaandhayntan marxalado badan leh waxay hubinaysaa Bixinta korontada oo deggan oo buuq yar leh ku socota qalabka FM-ka ee IC-ga.

2.2 Module-ka Soo Dhaweynta Calaamadaha FM

• Gelitaanka Signal:
  • The Biinanka FMIN (Biinanka 5) waxay ku xirtaa anteeno FM dibadeed (walax anteeno ah oo aan lagu muujin shaxda)
  • Waxay heshaa calaamadaha baahinta FM-ka gudaha 87-108 MHz band
• Wareegga Oscillator-ka Crystal:
  • A 32.768 kHz kiristaal (X1) waxay bixisaa saacad tixraac sax ah
  • Hubinta hagaajinta saxda ah ee FM-ka waxayna ka hortagtaa qulqulka soo noqnoqda inta lagu jiro xulashada saldhigga

2.3 Qaybta Xakamaynta iyo Isgaarsiinta

• Xiriirka isgaadhsiinta:
  • SDIO (Xog Taxane ah) + SCLK (Saacadaha Taxanaha ah)
  • jaanqaadaan I2C ama hab-maamuusyada isgaarsiinta taxanaha ah ee la midka ah
  • Waxaa loo isticmaalaa in lagu xidho MCU dibadeed (tusaale ahaan, microcontroller)
• Iska caabbinta Jiid-soo-jiidashada:
  • R6 (10kΩ) ee SDIO
  • R7 (10kΩ) ee SCLK
  • Labaduba waxay ku xiran yihiin 3V3, hubinta heerarka macquulka ah ee deggan iyo isgaarsiinta la isku halleyn karo

2.4 Module-ka Soo-saarka Maqalka

• Soo saarida Maqalka:
  • JIDKA: Maqalka analoogga ah ee kanaalka midig
  • LOUT: Maqalka analoogga ah ee kanaalka bidix
• Waxsoosaarku wuxuu noqon karaa:
  • Si toos ah ugu xiran headphones
  • Ku xiran ku hadla (fiiro gaar ah: mid dibadda ah cod-weyneeye waxaa loo baahan yahay si loo helo tamar sare)

2.5 Qaybta Shaandhaynta iyo Isku-dubaridka Kaaliyaha ah

• Inductors:
  • L1, L2 (100 nH): Waxay u badan tahay in loo isticmaalo isbarbardhigga RF impedance ama shaandhaynta gelinta ee dhamaadka hore ee FM
  • Waxay kaa caawisaa yaraynta milicsiga calaamadaha iyo hagaajinta xasaasiyadda soo dhawaynta
• Capacitors:
  • C13 (100 pF), C14 (24 pF): La shaqee inductor-yada si aad u sameyso Shabakadda shaandhada LC
  • Jooji faragelinta soo noqnoqoshada sare oo nadiifi calaamadda FM
• Goobidda:
  • Xidhiidho badan oo GND ah ayaa tilmaamaya naqshad caalami ah oo guud
  • Waxay yareysaa buuqa waxayna hagaajisaa xasilloonida guud ee wareegga

3. Qodobbada Muhiimka ah iyo Astaamaha Naqshadeynta

• Voltage Operating: 3.3V
  • Si buuxda ula jaanqaadi kara MCU-yada caadiga ah iyada oo aan la beddelin heerka
• Soo noqnoqoshada Crystal: 32.768 Khz
  • Soo noqnoqoshada tixraaca heerka warshadaha ee waqtiga xasilloon
• Habka Xakamaynta: Isku-xirka taxanaha ah ee SDIO + SCLK
  • Jid-socod fudud, laba khad oo kontarool oo keliya ayaa loo baahan yahay
• Naqshadeynta Shaandhaynta:
  • Kaabsadeyaal badan oo kala furfuraya awoodda (0.1µF + 22µF)
  • Shaandhaynta LC ee dhamaadka hore ee RF si loo helo difaac adag oo buuq ah
• Output Audio:
  • Codka analogga ah ee laba-kanaal ah (ROUT / LOUT)
  • Waxay taageertaa dib u ciyaarista stereo FM

4. Xaaladaha Codsiga iyo Talooyinka Ballaarinta

Codsiyada caadiga ah

• Raadiyeyaasha FM-ka ee la qaadi karo
• Sameecadaha caqliga leh oo leh shaqeynta raadiyaha FM
• Nidaamyada qaataha FM-ka ee ay maamusho MCU

Fursadaha Ballaadhinta

• Adeegso a Anteeno telescopic dibadeed ama anteeno PCB ah si loo hagaajiyo xasaasiyadda soo dhawaynta
• Kudar amplifier awood maqal ah (tusaale ahaan, LM386) ilaa ROUT/LOUT si loo wado sameecado waaweyn
• Karti u yeelo sifooyinka horumarsan iyada oo loo marayo xakamaynta MCU:
  • Iskaan-gareynta saldhigga otomaatiga ah
  • Kaydinta kanaalka ee hore loo sii dejiyay
  • Xakamaynta mugga dhijitaalka ah

5. Qoraallada Naqshadeynta iyo Taxaddarrada

• Dejinta Awoodda:
  • Hubi in gariirku hooseeyo oo ku yaal saadka 3.3V si looga fogaado buuqa codka ama soo dhawaynta aan degganayn
• Goobidda:
  • Isticmaal tixraac dhul oo adag oo joogto ah
  • Iska ilaali kala duwanaanshaha suurtagalka ah ee u dhexeeya dhulka korontada iyo dhulka maqalka si aad uga hortagto buuqa
• Iswaafajinta Culayska:
  • Anteenada ku xiran FMIN waa inay noqotaa mid la jaanqaadaysa impedance (badanaa 50Ω) si loo helo soo dhaweyn wanaagsan
• Xulashada Qaybaha:
  • Isticmaal a Saxnaan sare 32.768 kHz kiristaal
  • Ka doorbid Kondenser-yada NP0 / C0G qaybaha RF iyo waqtiga la xiriira sababtoo ah xasillooni sare

Koodhka barnaamijka wareegga raadiyaha

RDA5807.H
/*
**==============================================================================
** RDA5807.H:         
**
**  Description:
**
**==============================================================================
*/
#ifndef __RDA5807__
#define __RDA5807__
//------------------------------------------------------------------------------

#ifdef RDA5807_GLOBALS
   #define RDA5807_EXT
#else
   #define RDA5807_EXT extern
#endif // RDA5807_GLOBALS
//------------------------------------------------------------------------------
//==============================================================================

void RDA5807Init(void);

//------------------------------------------------------------------------------

RDA5807_EXT uint16_t g_nRDA5807Channel;

//------------------------------------------------------------------------------
void RDA5807Setup(void);
void RDA5807I2CWrite(uint8_t * pucData, int nLength);
void RDA5807SetChannel(float freq);



//==============================================================================
//             END OF THE FILE : RDA5807.H
//------------------------------------------------------------------------------
#endif // __RDA5807__

/*
**==============================================================================
** RDA5807.C:            
**
**==============================================================================
*/

//------------------------------------------------------------------------------
#include "stm32f0xx_hal.h"
#include "stm32f0xxa.h"

#define RDA5807_GLOBALS        1              // Define the global variables
#include "RDA5807.H"

//------------------------------------------------------------------------------
#define RDA5807_BOOT_LENGTH     12
uint8_t RDA5807_boot_config[] = {
    0xc1, 0x03,                             // Register 0x2
    0x00, 0x00,                             // Register 0x3
    0x0a, 0x00,                             // Register 0x4
    0x88, 0x0f,                             // Register 0x5
    0x00, 0x00,                             // Register 0x6
    0x42, 0x02,                             // Register 0x7
};


//------------------------------------------------------------------------------
#define RDA5807_TUNE_CONFIG_LENGTH  4

uint8_t RDA5807_tune_config[] = {
    0xc0, 0x01,                             // Register 2
    0x00, 0x00,                             // Reigster 3
};

void RDA5807SetTuneConfig(uint16_t channel) {
    RDA5807_tune_config[2] = (uint8_t)(channel >> 2);
    RDA5807_tune_config[3] = (uint8_t)(((channel & 0x3) << 6) | 0x10);
}

//------------------------------------------------------------------------------

void RDA5807Init(void) {

/* Assumin band starts at 87.0MHz(per setting below)
 * and channel spaceing of 100kHz(0.1Mhz)(per settings below)
 * then channel can be derive as floowins:
 * channel = (<desired freq in MHz> - 87.0) / 0.1
 *
 * which is ave as:
 * <10x desired ferq in MHz> - 870
*/
    g_nRDA5807Channel = 6;
    RDA5807Setup();
}

//------------------------------------------------------------------------------
extern I2C_HandleTypeDef hi2c1;
void RDA5807I2CWrite(uint8_t * pucData, int nLength) {
    HAL_I2C_Master_Transmit(&hi2c1, 0x20, pucData, nLength, 10);
}

//------------------------------------------------------------------------------
void RDA5807Setup(void) {
    RDA5807I2CWrite(RDA5807_boot_config, RDA5807_BOOT_LENGTH);
    RDA5807SetTuneConfig(g_nRDA5807Channel);
    RDA5807I2CWrite(RDA5807_tune_config, RDA5807_TUNE_CONFIG_LENGTH);
}


void RDA5807SetChannel(float freq) {
    g_nRDA5807Channel = (int)((freq - 87.0) * 10.0 + 0.5);
    RDA5807SetTuneConfig(g_nRDA5807Channel);
    RDA5807I2CWrite(RDA5807_tune_config, RDA5807_TUNE_CONFIG_LENGTH);
}

//==============================================================================
//                END OF THE FILE : RDA5807.C
//------------------------------------------------------------------------------