STM32f103+mrf24J40

2021-1-3 12:33

本帖最后由 kyh咚疯于 2021-1-4 11:26 编辑

采用stm32f103通过spi与mrf24J40MA进行通信，如何实现无线收发，我用的mrf24j40的驱动代码，在发送时，发现TXNCON的第0位一直为1并未主动清零，且未触发发送中断,只有同时设置TXNCON的TXNTRIG(0x1B<0>)和TXNSECEN(0x1B<1>)这两位时才会触发发送中断及TXNCON位清0操作，且传输一段时间后会放弃传输，按照数据手册P112介绍：Transmit the packet by setting the TXNTRIG (TXNCON 0x1B<0>) bit = 1. The bit will be automatically cleared by hardware.这与我的操作相矛盾，我不知道是哪里出了问题，希望大家可以看一下。

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void MRF24J40Init(void)

{

        uint8_t i;

        uint16_t j;

        //reset the MRF24J40 by pulling the RESET pin low

        RESET_LOW;

        for(j=0;j<(uint8_t)300;j++){}

        RESET_HIGH;

        drv_delay_ms(3);//delay 2-3 ms after a Reset before accessing the MRF24J40 to allow the RF circuitry to start up and stabilize.

                

        //do a soft reset

                //bit7-3 reserver :maintain as '0'

                //bit2 - 1 reset power managerment circuitry (bit is automatically cleared to ‘0’ by hardware)

                //bit1 - 1 Reset baseband circuitry (bit is automatically cleared to ‘0’ by hardware)

                //bit0 - 1 Reset MAC circuitry (bit is automatically cleared to ‘0’ by hardware)

        MRF24_SetShortRAMAddr(WRITE_SOFTRST,0x07);



                //wait for bit0-2 clear to '0'

        do{

                i = MRF24_GetShortRAMAddr(READ_SOFTRST);

        }while((i&0x07) != (uint8_t)0x00);        



        i=MRF24_GetShortRAMAddr(READ_ORDER);

        if(i != 0xFF){        

                printf("MRF24J40 Daughter card not inserted\t\n,0x%02x \t\n",i);

                return ;//error

        }

        MRF24_SetShortRAMAddr(WRITE_PACON2,0x98);//PACON2 = 0x98, Initialize FFOEN=1 and TXONTS = 0x6

        MRF24_SetShortRAMAddr(WRITE_TXSTBL,0x95);//Initialize RFSTBL = 0x9

        MRF24_SetLongRAMAddr(RFCON0,0x03);//Initialize RFOPT = 0x03, not use 

        MRF24_SetLongRAMAddr(RFCON1,0x01);//Initialize VCOOPT=0x02,not use 

        MRF24_SetLongRAMAddr(RFCON2,0x80);//Enable PLL

        MRF24_SetLongRAMAddr(RFCON6,0x90);//Initialize TXFIL=1, 20MRECVR=1

        MRF24_SetLongRAMAddr(RFCON7,0x80);//Initialize SLPCLKSEL = 0x2 (100KHz internal oscialltor)

        MRF24_SetLongRAMAddr(RFCON8,0x10);//Initialize RFVCO =1

        MRF24_SetLongRAMAddr(SLPCON0,0x02);//interrupt rising edge

        MRF24_SetLongRAMAddr(SLPCON1,0x21);//Initialize CLKOUTEN=1 and SLPCLKDIV = 0x01

        //deafult Nonbeacon_enabled device,disable slotted csma-ca mode

        //Configuration for nonbeacon-enabled devices

        MRF24_SetShortRAMAddr(WRITE_BBREG2,0x80);//Set CCA mode to ED

        MRF24_SetShortRAMAddr(WRITE_CCAEDTH,0x60);//Set CCA-ED Threshold

        MRF24_SetShortRAMAddr(WRITE_BBREG6,0x40);//Set appended RSSI value to RX FIFO

        MRF24_SetShortRAMAddr(WRITE_INTCON,0b11110110);//INTCON (0x32) = 0xF6 - Enables only TXNIF and RXIF interrupts,Enables the RX/TX FIFO reception interrupt, refer to datasheet P.54

        //MRF24_SetLongRAMAddr(RFCON3,0x48);//Large Scale Control for TX Power=-10dB,Small Scale Control for TX Power=-0.5dB

        MRF24_SetChannel(CHANNEL_15);//set operating channel as channel 11

        

                //delay 192us after RF State Machine Reset

   drv_delay_us(200);

         

        do{ //Wait until th RFSTATE machine indicates RX state

                        i = MRF24_GetLongRAMAddr(RFSTATE);

        }while((i&0xA0) != 0xA0);



//Program the short MAC address ,x0ffff

        MRF24_SetShortRAMAddr(WRITE_SADRL,0xFF);

        MRF24_SetShortRAMAddr(WRITE_SADRH,0xFF);

        // Load the short address of the device with 0xffff which means that it will be ignore upon receipt

        

        //Load the PAN address also with 0xfff

        MRF24_SetShortRAMAddr(WRITE_PANIDL,0xFF);

        MRF24_SetShortRAMAddr(WRITE_PANIDH,0xFF);



        //program Long MAC address

        for(i=0;i<(BYTE)8;i++){

                //load the long address as 07,06,05,04,03,02,01,00

                MRF24_SetShortRAMAddr(WRITE_EADR0+i*2,myLongAddress[i]);

        }

        // Automatic acknowledgement is not transmitted for received packets by TXMAC

        //ERRpkt mode bit is set to 0,Disables automatic Acknowledgement response

  //Promiscuous packet mode bit is set to 1,Receive all packet types with good CRC

        MRF24_SetShortRAMAddr(WRITE_RXMCR,0x21);

}

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void MRF24_SendPacket(BYTE header_len, BYTE Frame_len, BYTE* packet){

                BYTE i;

                MRF24_SetLongRAMAddr(TX_NORMAL_FIFO,header_len);

                MRF24_SetLongRAMAddr(TX_NORMAL_FIFO+1,Frame_len);

        

                for(i=2;i<Frame_len+2;i++){

                        MRF24_SetLongRAMAddr(TX_NORMAL_FIFO+i,packet[i-2]);

                }printf("--0x%02x",MRF24_GetLongRAMAddr(TX_NORMAL_FIFO+2));

                MRF24_SetShortRAMAddr(WRITE_TXNCON,0x01);//Transmit the frame in the TX Normal FIFO; bit is automatically cleared by hardware

                

}

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void radio(){//int main()中执行的函数

//mrf24j40 signal pin configure

        GPIO_InitTypeDef InitStructure;

        //enable pin configure

        RCC_APB2PeriphClockCmd(RESET_CLK|INT_CLK|WAKE_CLK,ENABLE);

        //interrupt pin configure input

        InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;

        InitStructure.GPIO_Speed = GPIO_Speed_10MHz;

        InitStructure.GPIO_Pin         = INT_PIN;

        GPIO_Init(INT_PORT,&InitStructure);

 //---out pin

        //RESET pin

        InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;

        InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

        InitStructure.GPIO_Pin  = RESET_PIN;

        GPIO_Init(RESET_PORT,&InitStructure);

        

        //WAKE pin

        InitStructure.GPIO_Pin  = WAKE_PIN;

        GPIO_Init(WAKE_PORT,&InitStructure);

        

        //NVIC  init

        NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);

        NVIC_InitTypeDef NVIC_InitStructure;

        NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;

        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;

        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;

        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

        NVIC_Init(&NVIC_InitStructure);

        //EXTI

        GPIO_EXTILineConfig(GPIO_PortSourceGPIOE,GPIO_PinSource5);

        EXTI_InitTypeDef Exti_initstructure;

        Exti_initstructure.EXTI_Line = EXTI_Line5;

        Exti_initstructure.EXTI_Mode = EXTI_Mode_Interrupt;

        Exti_initstructure.EXTI_Trigger = EXTI_Trigger_Rising;

        Exti_initstructure.EXTI_LineCmd = ENABLE;

        EXTI_Init(&Exti_initstructure);

        

        MRF24J40Init();//channel ,rx/tx interrupt and nobeacon-enable device, disable slotted-enable

        LED1_ON;

        drv_delay_500Ms(10);

        LED1_OFF;

        printf("state:0x%02x\t\n",MRF24_GetLongRAMAddr(RFSTATE));

        

#ifdef MRF_TX        

        printf("send start\t");

        while(1){

                if(MRF24_GetShortRAMAddr(READ_TXSTAT) & 0x20){printf("Channel busy\t\n");continue;}

                drv_delay_ms(20);

        //        printf("~~0x%02x\t\n",MRF24_GetShortRAMAddr(READ_TXNCON));

        //        MRF24_SendPacket(9,sizeof(txbuff),(BYTE*)txbuff);

                MRF24_SetLongRAMAddr(TX_NORMAL_FIFO,0x0D);

                MRF24_SetLongRAMAddr(0x001,0x0D);

                MRF24_SetLongRAMAddr(0x002,0x01);

                MRF24_SetLongRAMAddr(0x003,0x04);

                MRF24_SetLongRAMAddr(0x004,0xC4);

                MRF24_SetLongRAMAddr(0x005,0xFF);

                MRF24_SetLongRAMAddr(0x006,0xFF);

                MRF24_SetLongRAMAddr(0x007,0xFF);

                MRF24_SetLongRAMAddr(0x008,0xFF);

                MRF24_SetLongRAMAddr(0x009,0x07);

                MRF24_SetLongRAMAddr(0x00A,0x00);

                MRF24_SetLongRAMAddr(0x00B,0x00);

                MRF24_SetLongRAMAddr(0x00C,0x00);

                MRF24_SetLongRAMAddr(0x00D,0x00);

                MRF24_SetLongRAMAddr(0x00E,0xAA);

<font color="#ff0000">                MRF24_SetShortRAMAddr(WRITE_TXNCON,0b00000011);// 本应只设置0b00000001即可实现发送，但现在需要设置两位模块才会产生发送中断</font>

                

                

                if((MRF24_GetShortRAMAddr(READ_TXSTAT)&0x01)==0){

                drv_delay_500Ms(2);

                LED2_TOGGLE;

                }else{//transmit failed

                        printf("retry:0x%02x---0x%02x\t",MRF24_GetShortRAMAddr(READ_TXSTAT)&0x01,MRF24_GetShortRAMAddr(READ_TXSTAT)&0x60);

                        drv_delay_500Ms(2);

                 LED3_TOGGLE;

                }

        }

}