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關於2塊DSPIC30F4011作SPI傳輸
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高級會員
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: 2009/9/23 17:36 最後登入時間
: 2012/6/23 14:05
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Level : 10 HP : 0 / 229 MP : 41 / 10064 EXP : 17
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它的動作是master丟一個值到slave slave 在把數值用PORTB腳位以LED方式顯示出來 會做這樣簡單的動作是想讓自己了解SPI的傳輸條件 可是他失敗了 煩請各位板大先進解惑
以下是程式MASTER: #include <p30F4011.h> #include <timer.h> #include "spi.h"
#define FCY 7372800*2 #define SPI_CS PORTEbits.RE3 #define DIR_SPI_CS TRISEbits.TRISE3 #define MODE_SPI_CS ADPCFGbits.PCFG3
_FOSC(CSW_FSCM_OFF & XT_PLL8); _FWDT(WDT_OFF); _FBORPOR(PBOR_OFF & MCLR_EN); _FGS(CODE_PROT_OFF); unsigned long int i; void __attribute__((__interrupt__)) _SPI1Interrupt(void) { IFS0bits.SPI1IF = 0; SPI1STATbits.SPIROV = 0; } void Init_Port(void); void Init_SPI(void); main() { Init_Port(); Init_SPI(); SPI_CS = 0;
WriteSPI1(0x0055); while(SPI1STATbits.SPIRBF); SPI_CS = 1;
} void Init_Port(void) { SPI_CS = 1; DIR_SPI_CS = 0; MODE_SPI_CS = 1; }
void Init_SPI(void) {
unsigned int config1 , config2 ;
config1 = FRAME_ENABLE_OFF & FRAME_SYNC_OUTPUT & ENABLE_SDO_PIN & SPI_MODE16_OFF & SPI_SMP_OFF & SPI_CKE_ON & SLAVE_ENABLE_OFF & CLK_POL_ACTIVE_HIGH & MASTER_ENABLE_ON & SEC_PRESCAL_8_1 & PRI_PRESCAL_64_1;
config2 = SPI_ENABLE & SPI_IDLE_CON & SPI_RX_OVFLOW_CLR;
OpenSPI1(config1,config2); ConfigIntSPI1(SPI_INT_PRI_6 & SPI_INT_EN); }
程式SLAVE: #include <p30f4011.h> #include <spi.h> #define FCY 7372800 * 2
_FOSC(CSW_FSCM_OFF & XT_PLL8); _FWDT(WDT_OFF); _FBORPOR(PBOR_OFF & MCLR_EN); _FGS(CODE_PROT_OFF); #define SPI_CS PORTEbits.RE3 #define DIR_SPI_CS TRISEbits.TRISE3 #define MODE_SPI_CS ADPCFGbits.PCFG3 void Init_SPI(void); void Init_Port(void); void __attribute__((__interrupt__)) _SPI1Interrupt(void) { IFS0bits.SPI1IF = 0; SPI1STATbits.SPIROV = 0; } unsigned int data; main() { TRISB=0xff00; Init_Port(); Init_SPI(); SPI_CS = 0; while(!DataRdySPI1()); data = ReadSPI1(); LATB=data;
SPI_CS = 1; } void Init_Port(void) { SPI_CS = 1; DIR_SPI_CS = 1; MODE_SPI_CS = 1; } void Init_SPI(void) { unsigned int config1; unsigned int config2; config1 = FRAME_ENABLE_OFF & FRAME_SYNC_OUTPUT & ENABLE_SDO_PIN & SPI_MODE16_OFF & SPI_SMP_OFF & SPI_CKE_ON & SLAVE_ENABLE_ON & CLK_POL_ACTIVE_HIGH & MASTER_ENABLE_OFF& SEC_PRESCAL_8_1 & PRI_PRESCAL_64_1;
config2 = SPI_ENABLE & SPI_IDLE_CON & SPI_RX_OVFLOW_CLR;
OpenSPI1(config1,config2); ConfigIntSPI1(SPI_INT_PRI_6 & SPI_INT_EN); }
發表於: 2009/12/8 10:46
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