2440 SPI 源码

#include <string.h> #include "2440addr.h" #include "2440lib.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); void Test_Spi1_MS_poll(void); // added by junon 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; unsigned int spi_rGPDCON,spi_rGPDDAT,spi_rGPDUP; /**************************************************************** * 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 * func_spi_test[][2]= { // "0123456789012345" max 15자 로한정하여 comment하세요. //SPI (void *) Test_Spi_MS_int, "SPI0 RxTx Int ", (void *)Test_Spi_MS_poll, "SPI0 RxTx POLL ", (void *)Test_Spi_M_Int, "SPI0 M Rx INT ", (void *)Test_Spi_S_Int, "SPI0 S Tx INT ", (void *)Test_Spi_M_Tx_DMA1, "SPI0 M Tx DMA1 ", (void *)Test_Spi_S_Rx_DMA1, "SPI0 S Rx DMA1 ", (void *)Test_Spi_M_Rx_DMA1, "SPI0 M Rx DMA1 ", (void *)Test_Spi_S_Tx_DMA1, "SPI0 S Tx DMA1 ", (void *)Test_Spi1_MS_poll, "SPI1 RxTx POLL ", 0,0 }; void Spi_Test(void) { int i; while(1) { Uart_Printf("\n====== SPI Test program start ======\n"); Uart_Printf("1 : SPI0 RxTx Int \n"); Uart_Printf("2 : SPI0 RxTx POLL\n"); Uart_Printf("3 : SPI0 M Rx INT\n"); Uart_Printf("4 : SPI0 S Tx INT\n"); Uart_Printf("5 : SPI0 M Tx DMA1\n"); Uart_Printf("\n"); Uart_Printf("6 : SPI0 S Rx DMA1\n"); Uart_Printf("7 : SPI0 M Rx DMA1\n"); Uart_Printf("8 : SPI0 S Tx DMA1\n"); Uart_Printf("9 : SPI1 RxTx POLL\n"); Uart_Printf("\nPress Enter key to exit : "); i = Uart_GetIntNum(); if(i==-1) break; // return. // if(i>=0 && (i<((sizeof(func_spi_test)-1)/8)) ) // select and execute... // ( (void (*)(void)) (func_spi_test[i][0]) )(); switch(i) { case 1: Test_Spi_MS_int(); break; case 2: Test_Spi_MS_poll(); break; case 3: Test_Spi_M_Int(); break; case 4: Test_Spi_S_Int(); break; case 5: Test_Spi_M_Tx_DMA1(); break; case 6: Test_Spi_S_Rx_DMA1(); break; case 7: Test_Spi_M_Rx_DMA1(); break; case 8: Test_Spi_S_Tx_DMA1(); break; case 9: Test_Spi1_MS_poll(); break; default: break; } } Uart_Printf("\n====== SPI Test program end ======\n"); } void SPI_Port_Init(int MASorSLV) { // SPI channel 0 setting spi_rGPECON=rGPECON; spi_rGPEDAT=rGPEDAT; spi_rGPEUP=rGPEUP; rGPECON=((rGPECON&0xf03fffff)|0xa800000); // using SPI 0 rGPEUP = (rGPEUP & ~(7<<11)) | (1<<13); spi_rGPGCON=rGPGCON; spi_rGPGDAT=rGPGDAT; spi_rGPGUP=rGPGUP; if(MASorSLV==1) { rGPGCON=((rGPGCON&0xffffffcf)|0x10); // Master(GPIO_Output) rGPGDAT|=0x4; // Activate nSS } else rGPGCON=((rGPGCON&0xffffffcf)|0x30); // Slave(nSS) rGPGUP|=0x4; /* // SPI channel 1-1 setting --> Key board rGPGCON=(rGPGCON&0xffff033f)|(3<<6)|(3<<10)|(3<<12)|(1<<14); // MISO1, MOSI1, CLK1, Master rGPGDAT|=0x8; rGPGUP=(rGPGUP&~(7<<5))|(1<<7); */ // SPI channel 1-2 setting --> VD16~18 spi_rGPDCON=rGPDCON; spi_rGPDDAT=rGPDDAT; spi_rGPDUP=rGPDUP; rGPDCON=(rGPDCON&0xcfc0ffff)|(3<<16)|(3<<18)|(3<<20)|(1<<28); // MISO1, MOSI1, CLK1, Master rGPDDAT|=1<<14; rGPDUP=(rGPDUP&~(7<<8))|(1<<10); } void SPI_Port_Return(void) { rGPECON=spi_rGPECON; rGPEDAT=spi_rGPEDAT; rGPEUP=spi_rGPEUP; rGPGCON=spi_rGPGCON; rGPGDAT=spi_rGPGDAT; rGPGUP=spi_rGPGUP; rGPDCON=spi_rGPDCON; rGPDDAT=spi_rGPDDAT; rGPDUP=spi_rGPDUP; } void Test_Spi1_MS_poll(void) { // int i; char *txStr,*rxStr; SPI_Port_Init(1); Uart_Printf("[SPI Polling Tx/Rx Test]\n"); Uart_Printf("Connect SPIMOSI1 into SPIMISO1.\n"); endSpiTx=0; spiTxStr="ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 - SPI1"; spiRxStr=(char *) SPI_BUFFER; txStr=(char *)spiTxStr; rxStr=(char *)spiRxStr; rSPPRE1=0x0; //if PCLK=50Mhz,SPICLK=25Mhz rSPCON1=(0<<5)|(1<<4)|(1<<3)|(1<<2)|(0<<1)|(0<<0);//Polling,en-SCK,master,low,A,normal rSPPIN1=(0<<2)|(1<<1)|(0<<0);//dis-ENMUL,SBO,release while(endSpiTx==0) { if(rSPSTA1&0x1) //Check Tx ready state { if(*spiTxStr!='\0') rSPTDAT1=*spiTxStr++; else endSpiTx=1; while(!(rSPSTA1&0x1)); //Check Rx ready state *spiRxStr++=rSPRDAT1; } } rSPCON1&=~(1<<4);//dis-SCK *(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_MS_int(void) { char *txStr,*rxStr; SPI_Port_Init(1); 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;//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&=~((1<<5)|(1<<4));//poll, dis-SCK Uart_Printf("Current Rx address = 0x%x\n",spiRxStr); *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; rINTMSK|=BIT_SPI0; 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 // Uart_Printf("Current Rx address = 0x%x\n",spiRxStr); if(*spiTxStr!='\0') { rSPTDAT0=*spiTxStr++; rINTMSK&=~BIT_SPI0; } else { endSpiTx=1; } } void Test_Spi_MS_poll(void) { // int i; char *txStr,*rxStr; SPI_Port_Init(1); 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&=~(1<<4);//dis-SCK *(