Subversion Repositories NaviCtrl

void SSC_Init(void)

void SSC_Init(void)

{

{

        GPIO_InitTypeDef        GPIO_InitStructure;

        GPIO_InitTypeDef        GPIO_InitStructure;

        WIU_InitTypeDef         WIU_InitStructure;

//      WIU_InitTypeDef         WIU_InitStructure;

        // enable APB clock for SPI1

        // enable APB clock for SPI1

        SCU_APBPeriphClockConfig(__SSP1 ,ENABLE);

        SCU_APBPeriphClockConfig(__SSP1 ,ENABLE);

        // configure P5.4 -> SD-CS as an output pin

        // configure P5.4 -> SD-CS as an output pin

        GPIO_StructInit(&GPIO_InitStructure);

        GPIO_StructInit(&GPIO_InitStructure);

        SSP_InitStructure.SSP_CPOL = SSP_CPOL_Low;

        SSP_InitStructure.SSP_CPOL = SSP_CPOL_Low;

        // Set Baud Rate (Prescaler)

        // Set Baud Rate (Prescaler)

        // bit rate is BRCLK/SSP_ClockPrescaler/(1+SSP_ClockRate))

        // bit rate is BRCLK/SSP_ClockPrescaler/(1+SSP_ClockRate))

        // With MSCLK = 48MHz/2 = BRCLK we get for the SPICLK = 24Mhz / 8 / (1+5) = 500 kHz

        // With MSCLK = 48MHz/2 = BRCLK we get for the SPICLK = 24Mhz / 8 / (1+5) = 500 kHz

        SSP_InitStructure.SSP_ClockRate = 5; //5

        SSP_InitStructure.SSP_ClockRate = 5; //5

        SSP_Init(SSP1, &SSP_InitStructure);

        SSP_Init(SSP1, &SSP_InitStructure);

        SSC_Disable();

        SSC_Disable();

        SSP_Cmd(SSP1, ENABLE);

        SSP_Cmd(SSP1, ENABLE);

//________________________________________________________________________________________________________________________________________

//________________________________________________________________________________________________________________________________________

u8 SSC_GetChar (void)

u8 SSC_GetChar (void)

{

{

        while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoNotFull) != SET && (SD_WatchDog)); // wait for space in the tx fifo

        while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoNotFull) != SET);  // wait for space in the tx fifo

        while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoEmpty) != SET && (SD_WatchDog)); // wait for the byte to be sent

        while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoEmpty) != SET); // wait for the byte to be sent

        Byte = SSP_ReceiveData(SSP1); // read the byte transmitted from the slave

        Byte = SSP_ReceiveData(SSP1); // read the byte transmitted from the slave

        return (Byte);

        return (Byte);

}

}

//________________________________________________________________________________________________________________________________________

//________________________________________________________________________________________________________________________________________

void SSC_ClearRxFifo (void)

void SSC_ClearRxFifo (void)

        // wait that the tx fifo is empty

        // wait that the tx fifo is empty

        // then empty the rx fifo by reading all the bytes that are available

        // then empty the rx fifo by reading all the bytes that are available

        while(SSP_GetFlagStatus(SSP1, SSP_FLAG_RxFifoNotEmpty) == SET && (SD_WatchDog)) SSP_ReceiveData(SSP1);

        while(SSP_GetFlagStatus(SSP1, SSP_FLAG_RxFifoNotEmpty) == SET) SSP_ReceiveData(SSP1);

}

}

//________________________________________________________________________________________________________________________________________

//________________________________________________________________________________________________________________________________________

// Function:    SSC_PutChar(u8 Byte);

// Function:    SSC_PutChar(u8 Byte);

//________________________________________________________________________________________________________________________________________

//________________________________________________________________________________________________________________________________________

void SSC_PutChar (u8 Byte)

void SSC_PutChar (u8 Byte)

{

{

        while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoNotFull) != SET && (SD_WatchDog));

        while(SSP_GetFlagStatus(SSP1, SSP_FLAG_TxFifoNotFull) != SET);

        // put the byte to send in the tx fifo

        // put the byte to send in the tx fifo

        SSP_SendData(SSP1, Byte);

        SSP_SendData(SSP1, Byte);