Kuongororwa kweRadio Schematic Diagram Kubva paRDA5807M

Iyi circuit Schematic Diagram ndeye Module yekugamuchira redhiyo yeFM yakavakwa kumativi RDA5807M sechikamu chikuru cheIC. Inonyanya kushandisa Kugamuchira masaini eFM, odhiyo inobuda, uye mabasa ekutanga ekudzoraOngororo iri pazasi yakakamurwa kuita zvikamu zvepakati, mamodule anoshanda, uye ma parameter ekugadzira makiyi.

1. Chikamu Chepakati uye Mabasa ePin

Core IC: RDA5807M

The RDA5807M iradio redhiyo remuchina wakabatana zvikuru neIC inotsigira kugamuchira nhepfenyuro yeFM uye Kudzora kweI2C / SDIOZvichibva pane zvakarongwa, makiyi epini nekubatana kwawo zvakapfupikiswa pazasi:

2. Kupatsanurwa kweMamodule Anoshanda

2.1 Power Supply Module

• Input Voltage: 3.3V DC (yakarongedzwa)
• Sefa Zvikamu:
  • C8 (0.1µF), C9 (0.1µF): Ma capacitor anoparadzanisa ma frequency akawanda pakati peVDD neGND, achideredza ruzha rwesimba
  • C10 (22µF): Capacitor yemagetsi yakawanda yekusefa-frequency yakaderera uye yekuchengetedza simba
  • C26 (0.1µF): Kuwedzera kupatsanurwa kwemagetsi kuti kuwedzere kugadzikana kwemagetsi

Kusefa uku kwezvikamu zvakawanda kunovimbisa simba rekutumira rakasimba uye risina ruzha rwakanyanya kune FM receiver IC.

2.2 FM Signal Reception Module

• Signal Inzwa Zvinotaurwa:
  • The Pini yeFMIN (Pin 5) inobatanidza kune antenna yekunze yeFM (chinhu che antenna hachiratidzirwe muchirongwa)
  • Inogamuchira masaini eredhiyo yeFM mu 87-108 MHz Band
• Dunhu reCrystal Oscillator:
  • A 32.768 kHz kristaro (X1) inopa wachi chaiyo yekutarisa
  • Inovimbisa kugadziriswa kweFM nemazvo uye inodzivirira kutenderera kwema frequency panguva yekusarudza chiteshi

2.3 Module yeKudzora neKutaurirana

• Mutauro wekukurukurirana:
  • SDIO (Data reSerial) + SCLK (Wachi yeSerial)
  • kunoenderana I2C kana mamwe mapuroteni ekutaurirana akafanana
  • Inoshandiswa kubatanidza neMCU yekunze (semuenzaniso, microcontroller)
• Zvinodzivirira Kudhonza:
  • R6 (10kΩ) yeSDIO
  • R7 (10kΩ) yeSCLK
  • Ose akabatana ne 3V3, kuve nechokwadi chekuti mazinga ekufunga akasimba uye kutaurirana kwakavimbika

2.4 Module Inobuda Munzwi

• Audio Outputs:
  • NZIRA: Odhiyo yeanalog yechiteshi chekurudyi
  • ZVINHU ZVAKANYANYA: Odhiyo yeanalog yekuruboshwe
• Zvinobuda izvi zvinogona kuva:
  • Yakabatana zvakananga ku pamahedhifoni
  • Yakabatanidzwa ne vakurukuri (cherechedza: chinhu chekunze amplifier yeaudio inodiwa kuti simba ribude rakawanda)

2.5 Module Yekubatsira Yekusefa uye Kufananidza

• Inductors:
  • L1, L2 (100 nH): Zvingangoshandiswa pakuenzanisa RF impedance kana kusefa kwekuisa paFM front end
  • Inobatsira kuderedza kuratidzwa kwechiratidzo uye kuvandudza kunzwisiswa kwekugamuchira
• Capacitors:
  • C13 (100 pF), C14 (24 pF): Shanda nevainductors kuti ugadzire LC firita network
  • Dzivisa kupindira kwe high-frequency uye chenesa FM signal
• Grounding:
  • Kubatana kwakawanda kweGND kunoratidza a dhizaini yepasi rose yenzvimbo yakabatana
  • Inoderedza ruzha uye inovandudza kugadzikana kwese kwese kwedunhu

3. Zvikamu Zvikuru uye Zvimiro zveDhizaini

• Operating Voltage: 3.3V
  • Inoshanda zvizere neMCUs huru pasina kuchinja nhanho
• Kuwanda kweKristaro: 32.768 kHz
  • Maitikiro enguva yakatarwa muindasitiri kuti nguva igare yakagadzikana
• Kudzora Maitiro: SDIO + SCLK serial interface
  • Kurongeka kuri nyore, mitsetse miviri chete ndiyo inodiwa
• Dhizaini Yekusefa:
  • Ma capacitor ekubvisa simba akawanda (0.1µF + 22µF)
  • Kusefa kweLC kumberi kweRF kuti pave nekudzivirira ruzha rwakasimba
• Mutero weMutauro:
  • Odhiyo yeanalog ine nzira mbiri (ROUT / LOUT)
  • Inotsigira kutamba kwe stereo FM

4. Maitiro Ekushandisa uye Mazano Ekuwedzera

Maitiro echimiro

• Maredhiyo eFM anotakurika
• Maspika akangwara ane mashandiro eredhiyo yeFM
• Masisitimu ekugamuchira FM anodzorwa neMCU

Kuwedzera Kwekushandisa

• Shandisa iyo antenna yekunze yetelescopic kana antenna yePCB kuvandudza kunzwisiswa kwekugamuchira
• Wedzera an amplifier yesimba reodhiyo (semuenzaniso, LM386) kuenda kuROUT/LOUT yekufambisa masipika makuru
• Gonesa maficha epamusoro kuburikidza neMCU control:
  • Kuskena otomatiki kwechiteshi
  • Gadzirisa nzvimbo yekuchengetera chiteshi
  • Kudzora vhoriyamu yedhijitari

5. Zvinyorwa zveDhizaini uye Zvekuchengetedza

• Simba Kugadzikana:
  • Iva nechokwadi chekuti 3.3V haipindi ruzha rwakawanda kuti usanyanya kugadzikana kana ruzha rusina kugadzikana
• Grounding:
  • Shandisa gwara rekutsigira rakasimba uye rinoenderana
  • Dzivisa musiyano ungavapo pakati penzvimbo yemagetsi nenzvimbo yekurira kuti udzivise ruzha
• Impedans Matching:
  • Antena yakabatana ne FMIN inofanira kunge yakafanana ne impedance (kazhinji 50Ω) kuti vagamuchire zvakanaka
• Chikamu Sarudzo:
  • Shandisa a kristaro yakanyatsorurama ye32.768 kHz
  • Unofarira Ma capacitor eNP0 / C0G yeRF uye zvikamu zvine chekuita nenguva nekuda kwekugadzikana kwakanyanya

Kodhi yepurogiramu yedunhu reredhiyo

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