?? spi.c
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#include <string.h>
#include "2410addr.h"
#include "2410lib.h"
#include "spi.h"
#include "def.h"
#define spi_count 0x80
#define SPI_BUFFER _NONCACHE_STARTADDRESS
void __irq Spi_Int(void);
//void __irq Spi_M_Rx_Int(void);
//void __irq Spi_S_Tx_Int(void);
void __irq Dma1Tx_Int(void);
void __irq Dma1Rx_Int(void);
volatile char *spiTxStr,*spiRxStr;
volatile int endSpiTx;
volatile int tx_dma1Done;
volatile int rx_dma1Done;
unsigned int spi_rGPECON,spi_rGPEDAT,spi_rGPEUP;
unsigned int spi_rGPGCON,spi_rGPGDAT,spi_rGPGUP;
/****************************************************************
* SMDK2400 SPI configuration *
* GPG2=nSS0, GPE11=SPIMISO0, GPE12=SPIMOSI0, GPE13=SPICLK0 *
* GPG3=nSS1, GPG5 =SPIMISO1, GPG6 =SPIMOSI1, GPG7 =SPICLK1 *
* SPI1 is tested by OS(WINCE). So, Only SPI0 is tested by this code *
****************************************************************/
void SPI_Port_Init(int MASorSLV)
{
spi_rGPECON=rGPECON;
spi_rGPEDAT=rGPEDAT;
spi_rGPEUP=rGPEUP;
rGPEUP&=~(0x3800);
rGPEUP|=0x2000;
// rGPEUP|=(0x3800);
rGPECON=((rGPECON&0xf03fffff)|0xa800000);
spi_rGPGCON=rGPGCON;
spi_rGPGDAT=rGPGDAT;
spi_rGPGUP=rGPGUP;
rGPGUP|=0x4;
if(MASorSLV==1)
{
rGPGCON=((rGPGCON&0xffffffcf)|0x10); // Master(GPIO_Output)
rGPGDAT|=0x4; // Activate nSS
}
else
rGPGCON=((rGPGCON&0xffffffcf)|0x30); // Slave(nSS)
}
void SPI_Port_Return(void)
{
rGPECON=spi_rGPECON;
rGPEDAT=spi_rGPEDAT;
rGPEUP=spi_rGPEUP;
rGPGCON=spi_rGPGCON;
rGPGDAT=spi_rGPGDAT;
rGPGUP=spi_rGPGUP;
}
void Test_Spi_MS_int(void)
{
char *txStr,*rxStr;
SPI_Port_Init(0);
Uart_Printf("[SPI0 Interrupt Tx/Rx Test]\n");
Uart_Printf("Connect SPIMOSI0 into SPIMISO0.\n");
pISR_SPI0=(unsigned)Spi_Int;
endSpiTx=0;
spiTxStr="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
spiRxStr=(char *) SPI_BUFFER;
txStr=(char *)spiTxStr;
rxStr=(char *)spiRxStr;
rSPPRE0=0x0; //if PCLK=50Mhz,SPICLK=25Mhz
rSPCON0=(1<<5)|(1<<4)|(1<<3)|(1<<2)|(0<<1)|(0<<0);//int,en-SCK,master,low,A,normal
rSPPIN0=(0<<2)|(1<<1)|(0<<0);//dis-ENMUL,SBO,release
rINTMSK=~(BIT_SPI0);
while(endSpiTx==0);
rSPCON0=(0<<5)|(0<<4)|(1<<3)|(1<<2)|(0<<1)|(0<<0);//Poll,dis-SCK,master,low,A,normal
*spiRxStr='\0';//attach End of String(Null)
Uart_Printf("Tx Strings:%s\n",txStr);
Uart_Printf("Rx Strings:%s :",rxStr+1);//remove first dummy data
if(strcmp(rxStr+1,txStr)==0)
Uart_Printf("O.K.\n");
else
Uart_Printf("ERROR!!!\n");
SPI_Port_Return();
}
void __irq Spi_Int(void)
{
unsigned int status;
ClearPending(BIT_SPI0);
status=rSPSTA0;
if(rSPSTA0&0x6)
Uart_Printf("Data Collision or Multi Master Error(0x%x)!!!\n", status);
while(!(rSPSTA0&0x1)); //Check ready state
*spiRxStr++=rSPRDAT0; //First Rx data is garbage data
if(*spiTxStr!='\0')
rSPTDAT0=*spiTxStr++;
else
{
rINTMSK|=BIT_SPI0;
endSpiTx=1;
}
}
void Test_Spi_MS_poll(void)
{
int i;
char *txStr,*rxStr;
SPI_Port_Init(0);
Uart_Printf("[SPI Polling Tx/Rx Test]\n");
Uart_Printf("Connect SPIMOSI0 into SPIMISO0.\n");
endSpiTx=0;
spiTxStr="ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
spiRxStr=(char *) SPI_BUFFER;
txStr=(char *)spiTxStr;
rxStr=(char *)spiRxStr;
rSPPRE0=0x0; //if PCLK=50Mhz,SPICLK=25Mhz
rSPCON0=(0<<5)|(1<<4)|(1<<3)|(1<<2)|(0<<1)|(0<<0);//Polling,en-SCK,master,low,A,normal
rSPPIN0=(0<<2)|(1<<1)|(0<<0);//dis-ENMUL,SBO,release
while(endSpiTx==0)
{
if(rSPSTA0&0x1) //Check Tx ready state
{
if(*spiTxStr!='\0')
rSPTDAT0=*spiTxStr++;
else
endSpiTx=1;
while(!(rSPSTA0&0x1)); //Check Rx ready state
*spiRxStr++=rSPRDAT0;
}
}
rSPCON0=(0<<5)|(0<<4)|(1<<3)|(1<<2)|(0<<1)|(0<<0);//Polling,dis-SCK,master,low,A,normal
*(spiRxStr-1)='\0';//remove last dummy data & attach End of String(Null)
Uart_Printf("Tx Strings:%s\n",txStr);
Uart_Printf("Rx Strings:%s :",rxStr);
if(strcmp(rxStr,txStr)==0)
Uart_Printf("O.K.\n");
else
Uart_Printf("ERROR!!!\n");
SPI_Port_Return();
}
void Test_Spi_M_Tx_DMA1(void)
{
int i,first,second;
unsigned char *tx_ptr;
SPI_Port_Init(1); // Master(GPIO)
Uart_Printf("[SPI DMA1 Master Tx test]\n");
Uart_Printf("This test should be configured two boards\nStart Rx first.\n");
tx_ptr=(unsigned char *) SPI_BUFFER;
for(i=0; i<spi_count; i++)
*(tx_ptr+i)=i;
tx_dma1Done=0;
pISR_DMA1 = (unsigned)Dma1Tx_Int;
rINTMSK=~(BIT_DMA1);
//Step1. SPI init
rSPPRE0=0x0; //if PCLK=50Mhz,SPICLK=25Mhz
// rSPCON0=(2<<5)|(1<<4)|(1<<3)|(1<<2)|(0<<1)|(0<<0);//DMA1,en-SCK,master,low,A,normal
rSPCON0=(2<<5)|(1<<4)|(1<<3)|(1<<2)|(1<<1)|(0<<0);//DMA1,en-SCK,master,low,B,normal
rSPPIN0=(0<<2)|(1<<1)|(0<<0);//dis-ENMUL,SBO,release
//Step2. DMA1 init
rDISRC1=(unsigned)tx_ptr; //Address of Memory
rDISRCC1=(0<<1)|(0); //AHB(Memory), inc
rDIDST1=(unsigned)0x59000010;//Address of SPTDAT Register
rDIDSTC1=(1<<1)|(1); //APB(SPI), fix
rDCON1=(1<<31)|(0<<30)|(1<<29)|(0<<28)|(0<<27)|(3<<24)|(1<<23)|(1<<22)|(0<<20)|(spi_count);
//handshake, sync PCLK, TC int, single tx, single service, SPI, H/W request,
//off-reload, byte, 128Bytes
rGPGDAT&=0xfffffffb; // Activate nSS
rDMASKTRIG1=(0<<2)|(1<<1)|(0); //run, DMA1 channel on, no-sw trigger
while(tx_dma1Done==0);
while(!(rSPSTA0&0x1)); // Tx is done
rGPGDAT|=0x4; // Deactivate nSS
// rSPCON0=(0<<5)|(0<<4)|(1<<3)|(1<<2)|(0<<1)|(0<<0);//poll,dis-SCK,master,low,A,normal
rSPCON0=(0<<5)|(0<<4)|(1<<3)|(1<<2)|(1<<1)|(0<<0);//poll,dis-SCK,master,low,B,normal
Uart_Printf("\nDMA1 transfer end\n");
for(i=0; i<spi_count; i++)
Uart_Printf("0x%02x,",*tx_ptr++);
SPI_Port_Return();
}
void __irq Dma1Tx_Int(void)
{
tx_dma1Done=1;
rINTMSK|=BIT_DMA1;
ClearPending(BIT_DMA1);
}
void Test_Spi_S_Rx_DMA1(void)
{
int i;
unsigned char *rx_ptr;
SPI_Port_Init(0); // Slave(nSS)
Uart_Printf("[SPI DMA1 Slave Rx Test]\n");
Uart_Printf("This test should be configured two boards\nStart Rx first.\n");
rx_ptr=(unsigned char *) SPI_BUFFER;
for(i=0;i<0x500;i++)
*(rx_ptr+i)=0x0; // Zero Initialize
rx_dma1Done=0;
pISR_DMA1 = (unsigned)Dma1Rx_Int;
rINTMSK=~(BIT_DMA1);
//Step1. SPI init
rSPPRE0=0x0; //if PCLK=50Mhz,SPICLK=25Mhz
// rSPCON0=(2<<5)|(0<<4)|(0<<3)|(1<<2)|(0<<1)|(1<<0);//DMA1,dis-SCK,slave,low,A,TAGD
rSPCON0=(2<<5)|(0<<4)|(0<<3)|(1<<2)|(1<<1)|(1<<0);//DMA1,dis-SCK,slave,low,B,TAGD
//When you use [Slave Rx with DMA] function you should have to set TAGD bit
rSPPIN0=(0<<2)|(1<<1)|(0<<0);//dis-ENMUL,SBO,release
//Step2. DMA1 init
rDISRC1=(unsigned)0x59000014;//Address of SPRDAT Register
rDISRCC1=(1<<1)|(1); //APB(SPI), fix
rDIDST1=(unsigned)rx_ptr; //Address of Memory
rDIDSTC1=(0<<1)|(0); //AHB(Memory), inc
rDCON1=(1<<31)|(0<<30)|(1<<29)|(0<<28)|(0<<27)|(3<<24)|(1<<23)|(1<<22)|(0<<20)|(spi_count);
//handshake, sync PCLK, TC int, single tx, single service, SPI, H/W request,
//off-reload, byte, 128Bytes
rDMASKTRIG1=(0<<2)|(1<<1)|(0); //run, DMA1 channel on, no-sw trigger
while(rx_dma1Done==0);
rSPCON0=(0<<5)|(0<<4)|(0<<3)|(1<<2)|(1<<1)|(0<<0);//poll,dis-SCK,slave,low,B,normal
while(!rSPSTA0&0x1);
*(rx_ptr+spi_count)=rSPRDAT0;
rx_ptr=(unsigned char *) SPI_BUFFER;
for(i=1;i<(spi_count+1);i++)
Uart_Printf("0x%02x,",*(rx_ptr+i));
Uart_Printf("\nDMA1 receive end");
SPI_Port_Return();
}
void __irq Dma1Rx_Int(void)
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