TRX_operation.rar_C8051F930-TRX_c8051f930_operation_si4432

/* ** ============================================================================ ** ** FILE ** main.c ** ** DESCRIPTION ** This is the main file of the project. ** HW platform SDB with C8051F93x Silabs MCU ** ** CREATED ** Silicon Laboratories Hungary Ltd ** ** COPYRIGHT ** Copyright 2009 Silicon Laboratories, Inc. ** http://www.silabs.com ** ** ============================================================================ */ /* ======================================================== * * INCLUDE * * ======================================================== */ #include "C8051F930_defs.h" #include "compiler_defs.h" #include <string.h> /* ================================================================ * * C8051F930 Pin definitions for Software Development Board * * (using compiler_def.h macros) * * ================================================================ */ SBIT(NSS, SFR_P1, 3); SBIT(NIRQ, SFR_P0, 6); SBIT(PB1, SFR_P0, 0); SBIT(PB2, SFR_P0, 1); SBIT(PB3, SFR_P2, 0); SBIT(PB4, SFR_P2, 1); SBIT(LED1, SFR_P1, 4); SBIT(LED2, SFR_P1, 5); SBIT(LED3, SFR_P1, 6); SBIT(LED4, SFR_P1, 7); //One out of these definitions has to be uncommented which tells to the compiler what kind //of Testcard is plugged into the Software Development board #define SEPARATE_RX_TX //#define ANTENNA_DIVERSITY //#define ONE_SMA_WITH_RF_SWITCH /* ======================================================== * * Function PROTOTYPES * * ======================================================== */ //MCU initialization void MCU_Init(void); //SPI functions void SpiWriteRegister (U8, U8); U8 SpiReadRegister (U8); void main(void) { U8 ItStatus1,ItStatus2; U16 delay; U8 length,temp8; U8 payload[10]; //Initialize the MCU: // - set IO ports for the Software Development board // - set MCU clock source // - initialize the SPI port // - turn off LEDs MCU_Init(); /* ======================================================== * * Initialize the Si443x ISM chip * * ======================================================== */ //read interrupt status registers to clear the interrupt flags and release NIRQ pin ItStatus1 = SpiReadRegister(0x03); //read the Interrupt Status1 register ItStatus2 = SpiReadRegister(0x04); //read the Interrupt Status2 register //SW reset SpiWriteRegister(0x07, 0x80); //write 0x80 to the Operating & Function Control1 register //wait for POR interrupt from the radio (while the nIRQ pin is high) while ( NIRQ == 1); //read interrupt status registers to clear the interrupt flags and release NIRQ pin ItStatus1 = SpiReadRegister(0x03); //read the Interrupt Status1 register ItStatus2 = SpiReadRegister(0x04); //read the Interrupt Status2 register //wait for chip ready interrupt from the radio (while the nIRQ pin is high) while ( NIRQ == 1); //read interrupt status registers to clear the interrupt flags and release NIRQ pin ItStatus1 = SpiReadRegister(0x03); //read the Interrupt Status1 register ItStatus2 = SpiReadRegister(0x04); //read the Interrupt Status2 register /*set the physical parameters*/ //set the center frequency to 915 MHz SpiWriteRegister(0x75, 0x75); //write 0x75 to the Frequency Band Select register SpiWriteRegister(0x76, 0xBB); //write 0xBB to the Nominal Carrier Frequency1 register SpiWriteRegister(0x77, 0x80); //write 0x80 to the Nominal Carrier Frequency0 register //set the desired TX data rate (9.6kbps) SpiWriteRegister(0x6E, 0x4E); //write 0x4E to the TXDataRate 1 register SpiWriteRegister(0x6F, 0xA5); //write 0xA5 to the TXDataRate 0 register SpiWriteRegister(0x70, 0x2C); //write 0x2C to the Modulation Mode Control 1 register //set the TX power to MAX SpiWriteRegister(0x6D, 0x1F); //write 0x1F to the TX Power register //set the Tx deviation register (+-45kHz) SpiWriteRegister(0x72, 0x48); //write 0x48 to the Frequency Deviation register /*set the modem parameters according to the exel calculator(parameters: 9.6 kbps, deviation: 45 kHz, channel filter BW: 102.2 kHz*/ SpiWriteRegister(0x1C, 0x1E); //write 0x1E to the IF Filter Bandwidth register SpiWriteRegister(0x20, 0xD0); //write 0xD0 to the Clock Recovery Oversampling Ratio register SpiWriteRegister(0x21, 0x00); //write 0x00 to the Clock Recovery Offset 2 register SpiWriteRegister(0x22, 0x9D); //write 0x9D to the Clock Recovery Offset 1 register SpiWriteRegister(0x23, 0x49); //write 0x49 to the Clock Recovery Offset 0 register SpiWriteRegister(0x24, 0x00); //write 0x00 to the Clock Recovery Timing Loop Gain 1 register SpiWriteRegister(0x25, 0x24); //write 0x24 to the Clock Recovery Timing Loop Gain 0 register SpiWriteRegister(0x1D, 0x40); //write 0x40 to the AFC Loop Gearshift Override register SpiWriteRegister(0x1E, 0x0A); //write 0x0A to the AFC Timing Control register SpiWriteRegister(0x2A, 0x20); //write 0x20 to the AFC Limiter register /*set the packet structure and the modulation type*/ //set the preamble length to 10bytes if the antenna diversity is used and set to 5bytes if not #ifdef ANTENNA_DIVERSITY SpiWriteRegister(0x34, 0x14); //write 0x14 to the Preamble Length register #else SpiWriteRegister(0x34, 0x0A); //write 0x0A to the Preamble Length register #endif //set preamble detection threshold to 20bits SpiWriteRegister(0x35, 0x2A); //write 0x2A to the Preamble Detection Control register //Disable header bytes; set variable packet length (the length of the payload is defined by the //received packet length field of the packet); set the synch word to two bytes long SpiWriteRegister(0x33, 0x02); //write 0x02 to the Header Control2 register //Set the sync word pattern to 0x2DD4 SpiWriteRegister(0x36, 0x2D); //write 0x2D to the Sync Word 3 register SpiWriteRegister(0x37, 0xD4); //write 0xD4 to the Sync Word 2 register //enable the TX & RX packet handler and CRC-16 (IBM) check SpiWriteRegister(0x30, 0x8D); //write 0x8D to the Data Access Control register //Disable the receive header filters SpiWriteRegister(0x32, 0x00 ); //write 0x00 to the Header Control1 register //enable FIFO mode and GFSK modulation SpiWriteRegister(0x71, 0x63); //write 0x63 to the Modulation Mode Control 2 register #ifdef ANTENNA_DIVERSITY //enable the antenna diversity mode SpiWriteRegister(0x08, 0x80); //write 0x80 to the Operating Function Control 2 register #endif /*set the GPIO's according the testcard type*/ #ifdef ANTENNA_DIVERSITY SpiWriteRegister(0x0C, 0x17); //write 0x17 to the GPIO1 Configuration(set the Antenna 1 Switch used for antenna diversity ) SpiWriteRegister(0x0D, 0x18); //write 0x18 to the GPIO2 Configuration(set the Antenna 2 Switch used for antenna diversity ) #endif #ifdef ONE_SMA_WITH_RF_SWITCH SpiWriteRegister(0x0C, 0x12); //write 0x12 to the GPIO1 Configuration(set the TX state) SpiWriteRegister(0x0D, 0x15); //write 0x15 to the GPIO2 Configuration(set the RX state) #endif /*set the non-default Si443x registers*/ #ifndef ANTENNA_DIVERSITY //set AGC Override1 Register SpiWriteRegister(0x69