stc32g128k/Drivers/rf.c

#include "rf.h"
#include "../App/config.h"
#include "../App/rgb.h"
#include "intrins.h"

// ATR5179 <20><>Ƶǰ<C6B5><C7B0><EFBFBD><EFBFBD><EFBFBD>߿<EFBFBD><DFBF>ؿ<EFBFBD><D8BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŷ<EFBFBD><C5B6><EFBFBD>
sbit RF_TX    = P2^0;  // V1 <20><><EFBFBD>ƶ<EFBFBD> (1: ѡͨ<D1A1><CDA8><EFBFBD>ߵ<EFBFBD><DFB5><EFBFBD><EFBFBD><EFBFBD> TX ·<><C2B7>)
sbit RF_RX    = P3^7;  // V2 <20><><EFBFBD>ƶ<EFBFBD> (1: ѡͨ<D1A1><CDA8><EFBFBD>ߵ<EFBFBD><DFB5><EFBFBD><EFBFBD><EFBFBD> RX ·<><C2B7>)

// <20><>ƵоƬ<D0BE><C6AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŷ<EFBFBD><C5B6><EFBFBD> (<28><><EFBFBD><EFBFBD><EFBFBD>°<EFBFBD> PCB <20><><EFBFBD>ŶԵ<C5B6><D4B5><EFBFBD><EFBFBD><EFBFBD>)
sbit RF_TX_DAT  = P2^1;  // LR690L <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> (DIN) - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Pin 22 (P2.1)
sbit RF_RX_DATA = P3^6;  // LR690L <20><><EFBFBD>ս<EFBFBD><D5BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> (DATA) - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Pin 19 (P3.6)

// <20><><EFBFBD><EFBFBD><EFBFBD>ⲿ<EFBFBD><E2B2BF>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD>ӡ<EFBFBD><D3A1><EFBFBD><EFBFBD> (<28><> system.c <20>ж<EFBFBD><D0B6><EFBFBD>)
extern void Delay_us(u16 us);
extern void Delay_ms(u16 ms);
extern u16 GetTimer0_Safe(void);
extern void Uart_SendString(char *s);
extern void Uart_SendHex4(u8 val);
extern void Uart_SendHex8(u8 val);
extern void Uart_SendHex16(u16 val);
extern void Uart_SendHex20(u32 val);
extern void Uart_SendHex32(u32 val);
extern void Uart_SendByte(u8 dat);

/**
 * @brief <EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƵоƬ<EFBFBD><EFBFBD><EFBFBD>ص<EFBFBD> GPIO <EFBFBD><EFBFBD><EFBFBD>ŷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>״̬
 */
void RF_Init(void)
{
    // EAXFR = 1 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>չ<EFBFBD><D5B9><EFBFBD>⹦<EFBFBD>ܼĴ<DCBC><C4B4><EFBFBD> (XSFR)
    EAXFR = 1;

    // 1. <20><><EFBFBD><EFBFBD> P2.0 (RF_TX) <20><> P2.1 (RF_TX_DAT) Ϊ<><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽ (M1=0, M0=1)
    P2M1 &= ~((1 << 0) | (1 << 1));
    P2M0 |=  ((1 << 0) | (1 << 1));

    // 2. <20><><EFBFBD><EFBFBD> P3.7 (RF_RX) <20><> P3.5 (SHUT) Ϊ<><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽ (M1=0, M0=1)
    //    <20><><EFBFBD><EFBFBD> P3.6 (RF_RX_DATA) Ϊ<><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽ (M1=1, M0=0)<29><>ƥ<EFBFBD><C6A5><EFBFBD><EFBFBD><EFBFBD>ս<EFBFBD><D5BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    P3M1 &= ~((1 << 5) | (1 << 7));
    P3M1 |=  (1 << 6);
    P3M0 &= ~(1 << 6);
    P3M0 |=  ((1 << 5) | (1 << 7));

    // 3. <20><><EFBFBD><EFBFBD>ϵͳĬ<CDB3>ϵij<CFB5>ʼ<EFBFBD><CABC>ƽ
    RF_TX = 0;      // <20>Ͽ<EFBFBD><CFBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ·
    SHUT = 1;       // Ĭ<><C4AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SHUT<55><54>ʹ LR690L <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߹ر<DFB9>״̬
    RF_RX = 0;      // <20>Ͽ<EFBFBD><CFBF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ·
    RF_TX_DAT = 0;  // <20><><EFBFBD>Ʒ<EFBFBD><C6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD>
}

/**
 * @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƶ<EFBFBD>շ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>л<EFBFBD>
 * @param mode <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽ (0-<EFBFBD><EFBFBD><EFBFBD>߸<EFBFBD><EFBFBD><EFBFBD>, 1-<EFBFBD><EFBFBD><EFBFBD>չ<EFBFBD><EFBFBD><EFBFBD>, 2-<EFBFBD><EFBFBD><EFBFBD>乤<EFBFBD><EFBFBD>)
 */
void RF_SetMode(u8 mode)
{
    if (mode == 0) // ====== ģʽ 0: <20><><EFBFBD>߸<EFBFBD><DFB8><EFBFBD>ģʽ (Sleep/Idle) ======
    {
        SHUT = 1;  // ǿ<><C7BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SHUT <20><><EFBFBD>ţ<EFBFBD>ʹ LR690L <20><><EFBFBD>׽<EFBFBD><D7BD><EFBFBD><EFBFBD>͹<EFBFBD><CDB9>Ĵ<EFBFBD><C4B4><EFBFBD>
        RF_RX = 0; // <20>رս<D8B1><D5BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߿<EFBFBD><DFBF>أ<EFBFBD><D8A3><EFBFBD>ֹ<EFBFBD><D6B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӳ<EFBFBD><D3B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>յ<EFBFBD>·
        RF_TX = 0; // <20>رշ<D8B1><D5B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߿<EFBFBD><DFBF><EFBFBD>
    }
    else if (mode == 1) // ====== ģʽ 1: <20><><EFBFBD>չ<EFBFBD><D5B9><EFBFBD>ģʽ (RX Mode) ======
    {
        SHUT = 0;  // <20><><EFBFBD><EFBFBD> SHUT ʹ<><CAB9> LR690L оƬ<D0BE><C6AC><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        RF_TX = 0; // <20>رշ<D8B1><D5B7>俪<EFBFBD><E4BFAA>
        RF_RX = 1; // ѡͨ<D1A1><CDA8><EFBFBD>ߵ<EFBFBD> RX <20><><EFBFBD><EFBFBD>·<EFBFBD><C2B7><EFBFBD><EFBFBD>ʹ<EFBFBD>ܽ<EFBFBD><DCBD><EFBFBD><EFBFBD><EFBFBD>·<EFBFBD><C2B7>Ƶ<EFBFBD>Ŵ<EFBFBD>
    }
    else if (mode == 2) // ====== ģʽ 2: <20><><EFBFBD><EFBFBD><EFBFBD>乤<EFBFBD><E4B9A4>ģʽ (TX Mode) ======
    {
        SHUT = 1;  // <20><><EFBFBD>ջ<EFBFBD>ͣ<EFBFBD><CDA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֹ<EFBFBD><D6B9><EFBFBD><EFBFBD>ǿ<EFBFBD>źŶ<C5BA><C5B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><C7B0>
        RF_RX = 0; // <20>رս<D8B1><D5BD>տ<EFBFBD><D5BF><EFBFBD>
        RF_TX = 1; // ѡͨ<D1A1><CDA8><EFBFBD>ߵ<EFBFBD> TX <20><><EFBFBD><EFBFBD>·<EFBFBD><C2B7><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD>߷<EFBFBD><DFB7><EFBFBD>
    }
}

/**
 * @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD> EV1527 Э<EFBFBD>鵥<EFBFBD>ε<EFBFBD><EFBFBD>Ʒ<EFBFBD><EFBFBD><EFBFBD>һ֡ 24 λ<EFBFBD><EFBFBD>Ƶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD> (Sync + 24bit Data)
 */
void EV1527_TxFrame(u32 addr, u8 dat)
{
    u8 i;
    u32 tx_val;
    
    // <20>ϲ<EFBFBD> 20 λ<><CEBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7> 4 λ<><CEBB><EFBFBD><EFBFBD><EFBFBD>룬<EFBFBD><EBA3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 24 λ<>ز<EFBFBD><D8B2><EFBFBD>
    tx_val = (addr << 4) | (dat & 0x0F);
    
    // 1. ͬ<><CDAC>ͷ<EFBFBD><CDB7><EFBFBD>ͣ<EFBFBD><CDA3>ߵ<EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD> 1T (Լ 350us)<29><><EFBFBD>͵<EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD> 31T (Լ 10850us)
    RF_TX_DAT = 1;
    Delay_us(350);
    RF_TX_DAT = 0;
    Delay_us(10850);
    
    // 2. <20><><EFBFBD>ε<EFBFBD><CEB5>Ʒ<EFBFBD><C6B7><EFBFBD> 24 λ<><CEBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ
    for (i = 0; i < 24; i++)
    {
        if (tx_val & (0x800000UL >> i))
        {
            // <20><><EFBFBD><EFBFBD> "1"<22><><EFBFBD>ߵ<EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD> 3T (1050us)<29><><EFBFBD>͵<EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD> 1T (350us)
            RF_TX_DAT = 1;
            Delay_us(1050);
            RF_TX_DAT = 0;
            Delay_us(350);
        }
        else
        {
            // <20><><EFBFBD><EFBFBD> "0"<22><><EFBFBD>ߵ<EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD> 1T (350us)<29><><EFBFBD>͵<EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD> 3T (1050us)
            RF_TX_DAT = 1;
            Delay_us(350);
            RF_TX_DAT = 0;
            Delay_us(1050);
        }
    }
}

/**
 * @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>η<EFBFBD><EFBFBD><EFBFBD> EV1527 <EFBFBD><EFBFBD>Ƶ֡<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֹ<EFBFBD><EFBFBD>֡<EFBFBD><EFBFBD>ʧ
 */
void EV1527_Transmit(u32 addr, u8 dat)
{
    u8 i;
    RF_SetMode(2);  // <20>л<EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>״̬<D7B4><CCAC><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD>俪<EFBFBD>ز<EFBFBD><D8B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ն<EFBFBD>
    Delay_ms(5);    // <20>ȶ<EFBFBD><C8B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƶͨ·
    
    // ѭ<><D1AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 10 ֡<><D6A1>ȷ<EFBFBD><C8B7><EFBFBD><EFBFBD><EFBFBD>ն<EFBFBD><D5B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 1 ֡<><D6A1><EFBFBD>޲<EFBFBD><DEB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    for (i = 0; i < 10; i++)
    {
        EV1527_TxFrame(addr, dat);
        Delay_ms(10); // ֡<>䱣<EFBFBD><E4B1A3><EFBFBD><EFBFBD>ʱ
    }
    
    RF_TX_DAT = 0;  // <20><><EFBFBD>㷢<EFBFBD><E3B7A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    RF_SetMode(1);  // <20><><EFBFBD>»ָ<C2BB>Ϊ<EFBFBD><CEAA><EFBFBD>ռ<EFBFBD><D5BC><EFBFBD><EFBFBD><EFBFBD>̬<EFBFBD><CCAC><EFBFBD>Ա<EFBFBD><D4B1><EFBFBD><EFBFBD>ⷴ<EFBFBD><E2B7B4>
}

/**
 * @brief <EFBFBD><EFBFBD>ȡ<EFBFBD>ض<EFBFBD><EFBFBD><EFBFBD>ƽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>״̬<EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD>΢<EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD> (<EFBFBD><EFBFBD><EFBFBD><EFBFBD> Timer0 Ӳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>)
 */
u16 GetPulseDuration(u8 state, u16 timeout_us)
{
    u16 timeout_ticks;
    
    // ǿ<>ƹر<C6B9> Timer0 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD>㸴λ
    TR0 = 0;
    TMOD &= 0xF0; // <20><><EFBFBD><EFBFBD> Timer0 <20>Ĵ<EFBFBD><C4B4><EFBFBD>Ϊģʽ 0 (16λ<36>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD>)
    TL0 = 0x00;
    TH0 = 0x00;
    
    // <20><><EFBFBD><EFBFBD> 16 λ<><CEBB>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ticks <20><>ʱֵ (<28><> 1T ģʽ 24MHz <20>£<EFBFBD>1 Tick = 1 / 24M = 0.0416us)
    // <20><><EFBFBD><EFBFBD>ϵͳ Timer0 Ĭ<><C4AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ 12T ģʽ (1 Tick = 12 / 24MHz = 0.5us)
    timeout_ticks = (u16)((u32)timeout_us * (MAIN_Fosc / 1000000UL) / 12UL);
    
    TR0 = 1; // <20><><EFBFBD><EFBFBD> Timer0 Ӳ<><D3B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    
    // <20><><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD>ĵ<EFBFBD>ƽ״̬<D7B4><CCAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>жϣ<D0B6>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ת<EFBFBD><D7AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ
    while (RF_RX_DATA == state)
    {
        if (GetTimer0_Safe() > timeout_ticks)
        {
            TR0 = 0; 
            return 0; // <20>ж<EFBFBD><D0B6><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 0
        }
    }
    TR0 = 0; // <20>ض϶<D8B6>ʱ<EFBFBD><CAB1>
    
    return (u16)((u32)GetTimer0_Safe() * 12UL / (MAIN_Fosc / 1000000UL)); 
}

// ģ<><C4A3><EFBFBD><EFBFBD>Ƶ<EFBFBD>ź<EFBFBD>ȫ<EFBFBD>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
volatile u32 mock_rx_addr = 0;
volatile u8 mock_rx_data = 0;
volatile bit mock_rf_ready = 0;

/**
 * @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD><EFBFBD>Ⲣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>Ϸ<EFBFBD><EFBFBD><EFBFBD> EV1527 <EFBFBD><EFBFBD>Ƶ<EFBFBD>ź<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֡
 */
bit EV1527_Decode(u32 *out_addr, u8 *out_data)
{
    u16 high_time, low_time;
    u8 i;
    u32 addr = 0;
    u8 dat = 0;
    u16 T;
    u16 idata raw_h[24];
    u16 idata raw_l[24];

    // <20><><EFBFBD><EFBFBD>ģ<EFBFBD><C4A3><EFBFBD><EFBFBD>Ƶ<EFBFBD><C6B5><EFBFBD><EFBFBD>
    if (mock_rf_ready) {
        mock_rf_ready = 0;
        *out_addr = mock_rx_addr;
        *out_data = mock_rx_data;
        return 1;
    }

    // ====== 1. ͬ<><CDAC>ͷ<EFBFBD><CDB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>岶<EFBFBD><E5B2B6> ======
    {
        u16 wait_cnt = 0;
        while (RF_RX_DATA == 1)
        {
            Delay_us(5);
            wait_cnt++;
            if (wait_cnt > 2000) // 10 <20><><EFBFBD>볬ʱ<EBB3AC><CAB1><EFBFBD><EFBFBD>
                return 0;
        }
        
        wait_cnt = 0;
        while (RF_RX_DATA == 0)
        {
            Delay_us(5);
            wait_cnt++;
            if (wait_cnt > 4000) // 20 <20><><EFBFBD>볬ʱ<EBB3AC><CAB1><EFBFBD><EFBFBD>
                return 0;
        }
    }
    
    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ߵ<EFBFBD>ƽʱ<C6BD><CAB1>
    high_time = GetPulseDuration(1, 2500);
    if (high_time < 50 || high_time > 2500) {
        return 0;
    }

    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD><CDB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 31T <20>͵<EFBFBD>ƽʱ<C6BD><CAB1>
    low_time = GetPulseDuration(0, 60000);
    if (low_time < 1500 || low_time > 60000) {
        return 0;
    }

    // ͬ<><CDAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ļ<EFBFBD>׼ʱ<D7BC><CAB1> T <20><><EFBFBD><EFBFBD> (<28><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߵ<EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD>ȼ<EFBFBD>Ϊ 1T)
    T = high_time;
    if (T < 100 || T > 800) return 0; // <20><><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6>Χ<EFBFBD>޷<EFBFBD>: 100us ~ 800us

    // ====== 2. <20><><EFBFBD>ν<EFBFBD><CEBD><EFBFBD> 24 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB><EFBFBD><EFBFBD> ======
    for (i = 0; i < 24; i++)
    {
        raw_h[i] = GetPulseDuration(1, 2000);
        if (raw_h[i] == 0) return 0;
        
        raw_l[i] = GetPulseDuration(0, 2000);
        if (raw_l[i] == 0) return 0;
    }

    // ====== 3. ˫<>˱<EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ======
    for (i = 0; i < 24; i++)
    {
        u16 total = raw_h[i] + raw_l[i];
        if (total < T * 3 || total > T * 6) return 0; // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB><EFBFBD>ڱ<EFBFBD><DAB1><EFBFBD><EFBFBD><EFBFBD> 3T~6T ֮<><D6AE>
        
        if (raw_h[i] > raw_l[i] * 2)
        {
            // <20>ߵ<EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD>Գ<EFBFBD><D4B3>ڵ͵<DAB5>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD> "1"
            if (i < 20)
                addr = (addr << 1) | 1;
            else
                dat = (dat << 1) | 1;
        }
        else if (raw_l[i] > raw_h[i] * 2)
        {
            // <20>͵<EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD>Գ<EFBFBD><D4B3>ڸߵ<DAB8>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD> "0"
            if (i < 20)
                addr = (addr << 1);
            else
                dat = (dat << 1);
        }
        else
        {
            return 0; // <20><>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD>Ϲ棬<CFB9>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD>֡<EFBFBD><D6A1><EFBFBD>䣬<EFBFBD><E4A3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        }
    }

    // У<><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    *out_addr = addr;
    *out_data = dat;
    return 1;
}

/**
 * @brief RF <EFBFBD>շ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϲ<EFBFBD><EFBFBD>Թ<EFBFBD><EFBFBD><EFBFBD> (֧<EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ռ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӡ)
 */
void RF_DiagnosticMode(char choice)
{
    if (choice == 't')
    {
        u8 i;
        Uart_SendString("=== RF TX Test: Transmitting 20 test frames... ===\r\n");
        // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽ<C4A3><CABD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߿<EFBFBD><DFBF><EFBFBD>
        RF_SetMode(2);
        Delay_ms(5);

        for (i = 0; i < 20; i++)
        {
            // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ͳ<EFBFBD><CDB2>԰<EFBFBD><D4B0><EFBFBD>ÿ<EFBFBD>η<EFBFBD><CEB7>Ͱ<EFBFBD><CDB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָʾ<D6B8><CABE><EFBFBD><EFBFBD>˸
            MOTOR = 1;
            RGB_Send(0, 150, 0, 0, 150, 0); // <20>̹<EFBFBD><CCB9><EFBFBD>˸
            EV1527_TxFrame(0x37A86UL, 0x01);
            MOTOR = 0;
            RGB_Send(0, 0, 0, 0, 0, 0);
            
            Delay_ms(150); // ֡<><D6A1><EFBFBD><EFBFBD>
        }
        RF_TX_DAT = 0;
        RF_SetMode(1); // <20><><EFBFBD>»ָ<C2BB><D6B8><EFBFBD><EFBFBD><EFBFBD>ģʽ
        Uart_SendString("[RF] Transmit Done!\r\n");
    }
    else if (choice == 'r')
    {
        u16 wait_ms;
        u32 rx_addr;
        u8 rx_data;
        
        Uart_SendString("=== RF RX Test: Listening for 5 seconds... ===\r\n");
        RF_SetMode(1); // <20><><EFBFBD>ý<EFBFBD><C3BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽ<C4A3><CABD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        Delay_ms(10);
        
        // 5<><35><EFBFBD>ķ<EFBFBD><C4B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        for (wait_ms = 0; wait_ms < 5000; wait_ms++)
        {
            if (EV1527_Decode(&rx_addr, &rx_data))
            {
                Uart_SendString("[RF] Decoded successfully! Addr: 0x");
                Uart_SendHex32(rx_addr);
                Uart_SendString(", Cmd/Data: ");
                Uart_SendHex8(rx_data);
                Uart_SendString("\r\n");
                
                // <20>յ<EFBFBD><D5B5>źź<C5BA><C5BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>𶯲<EFBFBD><F0B6AFB2><EFBFBD><EFBFBD><EFBFBD>ɫ<EFBFBD><C9AB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
                MOTOR = 1;
                RGB_Send(0, 150, 150, 0, 150, 150);
                Delay_ms(100);
                MOTOR = 0;
                RGB_Send(0, 0, 0, 0, 0, 0);
            }
            Delay_ms(1);
        }
        Uart_SendString("=== RF RX Test End ===\r\n");
    }
}