spi.rar_HCS08 uart_freescale SPI_hcs08_hcs08 spi_spi driver

/******************************************************************************************/ /* Company : Cobra Automotive Technologies */ /* Author : A.C. */ /* Module name : spi1.c/.h */ /* Module version : 0.0 */ /* Module description : SPI 4-wire bus driver that uses ISR only for data receiving */ /* Platform : Freescale MC9S08AW16 */ /* Notes : */ /* */ /* */ /* --- Module History --------------------------------------------------------------------*/ /* */ /* --------------------------------------------------------------------------------------*/ /* | Date | Ver. | Author | Notes | */ /* |------------|---------|----------------|--------------------------------------------| */ /* | 16/02/2010 | 0.0 | A.C. | First version | */ /* |------------|---------|----------------|--------------------------------------------| */ /* | | | | | */ /* |------------|---------|----------------|--------------------------------------------| */ /******************************************************************************************/ #define __SPI1_PRIVATE__ /* ******************************************************************************** * Header/include files * ******************************************************************************** */ #include "MC9S08AW16.h" /* */ #include "io.h" #include "spi1.h" /* ******************************************************************************* * *************************************************************************** * * * PROTECTED FUNCTION DEFINITION (ISR routines) * * * *************************************************************************** * ******************************************************************************* */ /* ******************************************************************************** * Function name : SPI1_Interrupt() * ******************************************************************************** * Author : Alessandro Cervellin * * Input parameters : none * * Return value : none * * Function description : puts the received data byte into the buffer * * Notes : * * * * --- Function History ------------------------------------------------------- * * * * -------------------------------------------------------------------------- * * | Date | Notes | * * |----------|---------------------------------------------------------------| * * |S 16/02/10| Base Relesase | * * |E 16/02/10| | * * |----------|---------------------------------------------------------------| * * | | | * * -------------------------------------------------------------------------- * * * * --- Open issues ------------------------------------------------------------ * * * ******************************************************************************** */ @interrupt void SPI1_Interrupt(void) { UC_8 t; // while (SPI1_SPSCK); /*wait for clock to return low (no default)*/ while (!SPI1_SPSCK); /* wait the return to High*/ t = SPI1S; /* Acknowledge flags */ Spi1_RxBuffer[Spi1_RxBufferIdx] = SPI1D; /* Get the data */ Spi1_RxBufferIdx++; if (Spi1_RxBufferIdx > Spi1_RxDataToReceive) { Status = SPI_RD_COMPLETED; } } /* ******************************************************************************* * *************************************************************************** * * * PRIVATE FUNCTION DEFINITIONS * * * *************************************************************************** * ******************************************************************************* */ void Spi1_Delay10us(void){ UC_8 i; for (i=5; i>0; i--){ #asm // 4 x Nop() = 1us nop nop nop nop nop nop nop nop #endasm } } void SPI1_DelayTick10us(UC_8 t){ for (; t>0; t--){ Spi1_Delay10us(); } } /* ******************************************************************************** * Function name : Spi1_SendChar() * ******************************************************************************** * Author : Alessandro Cervellin * * Input parameters : date to send * * Return value : none * * Function description : asend a single data byte * * Notes : * * * * --- Function History ------------------------------------------------------- * * * * -------------------------------------------------------------------------- * * | Date | Notes | * * |----------|---------------------------------------------------------------| * * |S 16/02/10| Base Relesase | * * |E 16/02/10| | * * |----------|---------------------------------------------------------------| * * | | | * * -------------------------------------------------------------------------- * * * * --- Open issues ------------------------------------------------------------ * * * ******************************************************************************** */ void Spi1_SendChar (UC_8 data){ while (!SPI1S_SPTEF); /* wait until transmit buffer is empty*/ SPI1D = data; /* Transmit counter*/ } /* ******************************************************************************** * Function name : Spi1_SlaveSelect() * ******************************************************************************** * Author : Alessandro Cervellin