TRF7960_demo.zip_TRF7960_demo_trf7960

#include "parallel.h" #include "SPI.h" #include "globals.h" #define DBG 0 unsigned char temp; unsigned int DUMMYREAD = 0; unsigned int mask = 0x80; /* ======================================================================================================================= ======================================================================================================================= */ void PARset(void) { EnableSet; TRFDirOUT; /* P4 output */ TRFFunc; TRFWrite = 0x00; /* P4 set to 0 - choose parallel inteface for the TRF796x */ clkOFF; clkPOUTset; /* DATA_CLK on P3.3 */ irqPINset; irqEDGEset; /* rising edge interrupt */ LEDallOFF; LEDportSET; } /* PARset */ /* ======================================================================================================================= ======================================================================================================================= */ void STOPcondition(void) { TRFWrite |= 0x80; /* stop condition */ clkON; TRFWrite = 0x00; clkOFF; } /* STOPcondition */ /* ======================================================================================================================= ======================================================================================================================= */ void STOPcont(void) { /* stop condition for continous mode */ TRFWrite = 0x00; TRFDirOUT; TRFWrite = 0x80; __no_operation(); TRFWrite = 0x00; } /* STOPcond */ /* ======================================================================================================================= ======================================================================================================================= */ void STARTcondition(void) { TRFWrite = 0x00; clkON; TRFWrite = 0xff; clkOFF; } /* STARTcondition */ /////////////////////////////////////////////////////////////// void SPIStartCondition(void) { //Make the SCLK High P3SEL &= ~ BIT3; P3DIR |= BIT3; P3OUT |= BIT3; //Make SCLK High //Revert back //P3SEL |= BIT3; } /////////////////////////////////////////////////////////////// void SPIStopCondition(void) { //Make the SCLK Low P3SEL &= ~ BIT3; P3OUT &= ~BIT3; //Make SCLK Low P3DIR |= BIT3; P3OUT &= ~BIT3; //Make SCLK Low //Revert back //P3SEL |= BIT3; } /////////////////////////////////////////////////////////////// /* ======================================================================================================================= Function writes only one register or a multiple number ; of registers with specified addresses ; ======================================================================================================================= */ void WriteSingle(unsigned char *pbuf, unsigned char lenght) { /*~~~~~~~~~~~~~~*/ unsigned char i; /*~~~~~~~~~~~~~~*/ if ((SPIMODE)==0) //Parallel Mode { STARTcondition(); while(lenght > 0) { *pbuf = (0x1f &*pbuf); /* register address */ /* address, write, single */ for(i = 0; i < 2; i++) { TRFWrite = *pbuf; /* send command and data */ clkON; clkOFF; pbuf++; lenght--; } } /* while */ STOPcondition(); } //end of Parallel mode /*********************************************************/ if (SPIMODE) //SPI Mode { #ifndef SPI_BITBANG /*********************************/ /* Start of Hardware SPI Mode */ /*********************************/ SlaveSelectLOW; //Start SPI Mode while(lenght > 0) { *pbuf = (0x1f &*pbuf); /* register address */ for(i = 0; i < 2; i++) { while (!(IFG2 & UCB0TXIFG)); // USCI_B0 TX buffer ready? UCB0TXBUF = *pbuf; // Previous data to TX, RX // while (!(IFG2 & UCB0RXIFG)); temp=UCB0RXBUF; pbuf++; lenght--; } } /* while */ SlaveSelectHIGH; //Stop SPI Mode #endif } //end of SPI mode } /* WriteSingle */ /* ======================================================================================================================= Function writes a specified number of registers from ; a specified address upwards ; ======================================================================================================================= */ void WriteCont(unsigned char *pbuf, unsigned char lenght) { /*~~~~~~~~~~~~~~*/ /*~~~~~~~~~~~~~~*/ if ((SPIMODE)==0) //Parallel Mode { STARTcondition(); *pbuf = (0x20 | *pbuf); /* address, write, continous */ *pbuf = (0x3f &*pbuf); /* register address */ while(lenght > 0) { TRFWrite = *pbuf; /* send command */ clkON; clkOFF; pbuf++; lenght--; } /* while */ STOPcont(); } //end of Parallel Mode if (SPIMODE) { #ifndef SPI_BITBANG /*********************************/ /* Start of Hardware SPI Mode */ /*********************************/ SlaveSelectLOW; //Start SPI Mode *pbuf = (0x20 | *pbuf); /* address, write, continous */ *pbuf = (0x3f &*pbuf); /* register address */ while(lenght > 0) { while (!(IFG2 & UCB0TXIFG)); // USCI_B0 TX buffer ready? UCB0TXBUF = *pbuf; // Previous data to TX, RX while (!(IFG2 & UCB0RXIFG)); temp=UCB0RXBUF; pbuf++; lenght--; } /* while */ SlaveSelectHIGH; //Stop SPI Mode #endif } //end of SPI mode } /* WriteCont */ /* ======================================================================================================================= Function reads only one register ; ======================================================================================================================= */ void ReadSingle(unsigned char *pbuf, unsigned char lenght) { /*~~~~~~~~~~~~~~*/ /*~~~~~~~~~~~~~~*/ if ((SPIMODE)==0) { STARTcondition(); while(lenght > 0) { *pbuf = (0x40 | *pbuf); /* address, read, single */ *pbuf = (0x5f &*pbuf); /* register address */ TRFWrite = *pbuf; /* send command */ clkON; clkOFF; TRFDirIN; /* read register */ clkON; __no_operation(); *pbuf = TRFRead; clkOFF; TRFWrite = 0x00; TRFDirOUT; pbuf++; lenght--; } /* while */ STOPcondition(); } //end of parallel mode /**************************************************************/ if (SPIMODE) //SPI Mode { #ifndef SPI_BITBANG