我添加了这些文件、
我试了一下。官方的LED闪烁工程 main.c 一切正常。自己改的教程就不能在下载到FLASH是正常工作。
官方的例程：
#include "DSP28x_Project.h" // Device Headerfile and Examples Include File
// Prototype statements for functions found within this file.
interrupt void cpu_timer0_isr(void);
void main(void)
{
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the DSP2803x_SysCtrl.c file.
InitSysCtrl();
// Step 2. Initalize GPIO:
// This example function is found in the DSP2803x_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
// InitGpio(); // Skipped for this example
// Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interrupts
DINT;
// Initialize the PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared.
// This function is found in the DSP2803x_PieCtrl.c file.
InitPieCtrl();
// Disable CPU interrupts and clear all CPU interrupt flags:
IER = 0x0000;
IFR = 0x0000;
// Initialize the PIE vector table with pointers to the shell Interrupt
// Service Routines (ISR).
// This will populate the entire table, even if the interrupt
// is not used in this example. This is useful for debug purposes.
// The shell ISR routines are found in DSP2803x_DefaultIsr.c.
// This function is found in DSP2803x_PieVect.c.
InitPieVectTable();
// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.
EALLOW; // This is needed to write to EALLOW protected registers
PieVectTable.TINT0 = &cpu_timer0_isr;
EDIS; // This is needed to disable write to EALLOW protected registers
// Step 4. Initialize the Device Peripheral. This function can be
// found in DSP2803x_CpuTimers.c
InitCpuTimers(); // For this example, only initialize the Cpu Timers
// Configure CPU-Timer 0 to interrupt every 500 milliseconds:
// 60MHz CPU Freq, 50 millisecond Period (in uSeconds)
ConfigCpuTimer(&CpuTimer0, 60, 500000);
// To ensure precise timing, use write-only instructions to write to the entire register. Therefore, if any
// of the configuration bits are changed in ConfigCpuTimer and InitCpuTimers (in DSP2803x_CpuTimers.h), the
// below settings must also be updated.
CpuTimer0Regs.TCR.all = 0x4001; // Use write-only instruction to set TSS bit = 0
// Step 5. User specific code, enable interrupts:
// Configure GPIO34 as a GPIO output pin
EALLOW;
GpioCtrlRegs.GPBMUX1.bit.GPIO34 = 0;
GpioCtrlRegs.GPBDIR.bit.GPIO34 = 1;
EDIS;
// Enable CPU INT1 which is connected to CPU-Timer 0:
IER |= M_INT1;
// Enable TINT0 in the PIE: Group 1 interrupt 7
PieCtrlRegs.PIEIER1.bit.INTx7 = 1;
// Enable global Interrupts and higher priority real-time debug events:
EINT; // Enable Global interrupt INTM
ERTM; // Enable Global realtime interrupt DBGM
// Step 6. IDLE loop. Just sit and loop forever (optional):
for(;;);
}
interrupt void cpu_timer0_isr(void)
{
CpuTimer0.InterruptCount++;
GpioDataRegs.GPBTOGGLE.bit.GPIO34 = 1; // Toggle GPIO34 once per 500 milliseconds
// Acknowledge this interrupt to receive more interrupts from group 1
PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;
}
//===========================================================================
// No more.
//===========================================================================
我自己根据官网的教程修改后的代码：
#include "DSP28x_Project.h" // Device Headerfile and Examples Include File
// Prototype statements for functions found within this file.
void scia_echoback_init(void);
void scia_fifo_init(void);
void scia_xmit(int a);
void scia_msg(char *msg);
// Global counts used in this example
Uint16 LoopCount;
Uint16 ErrorCount;
// Prototype statements for functions found within this file.
interrupt void adc_isr(void);
void Adc_Config(void);
void serial_send_coord(float *coord, float line_number);
// Global variables used in this example:
//Uint16 LoopCount;
Uint16 ConversionCount;
float Voltage1[6];
float Voltage2[6];
void main(void)
{
//Uint16 ReceivedChar;
char *msg;
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the DSP2803x_SysCtrl.c file.
InitSysCtrl();
// Step 2. Initalize GPIO:
// This example function is found in the DSP2803x_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
// InitGpio(); Skipped for this example
// For this example, only init the pins for the SCI-A port.
// This function is found in the DSP2803x_Sci.c file.
InitSciaGpio();
// Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interrupts
DINT;
// Initialize PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared.
// This function is found in the DSP2803x_PieCtrl.c file.
InitPieCtrl();
// Disable CPU interrupts and clear all CPU interrupt flags:
IER = 0x0000;
IFR = 0x0000;
// Initialize the PIE vector table with pointers to the shell Interrupt
// Service Routines (ISR).
// This will populate the entire table, even if the interrupt
// is not used in this example. This is useful for debug purposes.
// The shell ISR routines are found in DSP2803x_DefaultIsr.c.
// This function is found in DSP2803x_PieVect.c.
InitPieVectTable();
// Step 4. Initialize all the Device Peripherals:
// This function is found in DSP2803x_InitPeripherals.c
// InitPeripherals(); // Not required for this example
// Step 5. User specific code:
LoopCount = 0;
ErrorCount = 0;
// Configure GPIO34 as a GPIO output pin
EALLOW;
GpioCtrlRegs.GPBMUX1.bit.GPIO34 = 0;
GpioCtrlRegs.GPBDIR.bit.GPIO34 = 1;
EDIS;
scia_fifo_init(); // Initialize the SCI FIFO
scia_echoback_init(); // Initalize SCI for echoback
msg = "\r\n\n\nHello World!\0";
scia_msg(msg);
msg = "\r\nYou will enter a character, and the DSP will echo it back! \n\0";
scia_msg(msg);
//ADC
// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.
EALLOW; // This is needed to write to EALLOW protected register
PieVectTable.ADCINT1 = &adc_isr;
EDIS; // This is needed to disable write to EALLOW protected registers
// Step 4. Initialize all the Device Peripherals:
// This function is found in DSP2803x_InitPeripherals.c
// InitPeripherals(); // Not required for this example
InitAdc(); // For this example, init the ADC
// Step 5. User specific code, enable interrupts:
// Enable ADCINT1 in PIE
PieCtrlRegs.PIEIER1.bit.INTx1 = 1; // Enable INT 1.1 in the PIE
IER |= M_INT1; // Enable CPU Interrupt 1
EINT; // Enable Global interrupt INTM
ERTM; // Enable Global realtime interrupt DBGM
LoopCount = 0;
ConversionCount = 0;
// Configure ADC
EALLOW;
AdcRegs.ADCCTL1.bit.INTPULSEPOS = 1; //ADCINT1 trips after AdcResults latch
AdcRegs.INTSEL1N2.bit.INT1E = 1; //Enabled ADCINT1
AdcRegs.INTSEL1N2.bit.INT1CONT = 0; //Disable ADCINT1 Continuous mode
AdcRegs.INTSEL1N2.bit.INT1SEL = 1; //setup EOC1 to trigger ADCINT1 to fire
AdcRegs.ADCSOC0CTL.bit.CHSEL = 4; //set SOC0 channel select to ADCINA4
AdcRegs.ADCSOC1CTL.bit.CHSEL = 2; //set SOC1 channel select to ADCINA2
AdcRegs.ADCSOC0CTL.bit.TRIGSEL = 5; //set SOC0 start trigger on EPWM1A, due to round-robin SOC0 converts first then SOC1
AdcRegs.ADCSOC1CTL.bit.TRIGSEL = 5; //set SOC1 start trigger on EPWM1A, due to round-robin SOC0 converts first then SOC1
AdcRegs.ADCSOC0CTL.bit.ACQPS = 6; //set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
AdcRegs.ADCSOC1CTL.bit.ACQPS = 6; //set SOC1 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
EDIS;
// Assumes ePWM1 clock is already enabled in InitSysCtrl();
EPwm1Regs.ETSEL.bit.SOCAEN = 1; // Enable SOC on A group
EPwm1Regs.ETSEL.bit.SOCASEL = 4; // Select SOC from from CPMA on upcount
EPwm1Regs.ETPS.bit.SOCAPRD = 1; // Generate pulse on 1st event
EPwm1Regs.CMPA.half.CMPA = 0x0080; // Set compare A value
EPwm1Regs.TBPRD = 0xFFFF; // Set period for ePWM1
EPwm1Regs.TBCTL.bit.CTRMODE = 0; // count up and start
//END ADC
for(;;)
{
msg = "\r\nEnter a character: \0";
scia_msg(msg);
scia_msg(msg);
scia_msg(msg);
scia_msg(msg);
scia_msg(msg);
scia_msg(msg);
GpioDataRegs.GPBTOGGLE.bit.GPIO34 = 1;
}
}
void serial_send_coord(float *coord, float line_number)
{
//以指针形式发送坐标值
char *p = (char *)coord;
int num;
//_DINT(); //关闭中断发送坐标
for( num = 0;num < 24;num++)
{
if(num == 0)
{
scia_xmit('$');
}
scia_xmit(*(p + num));
}
//发送行号
p = (char *)(&line_number);
for( num = 0; num < 4; num++)
{
scia_xmit(*(p + num));
}
}
interrupt void adc_isr(void)
{
Voltage1[ConversionCount] = AdcResult.ADCRESULT0 ;
Voltage2[ConversionCount] = AdcResult.ADCRESULT1;
Voltage1[ConversionCount] = (Voltage1[ConversionCount]*3.3) / 4096 ;
Voltage2[ConversionCount] = (Voltage2[ConversionCount]*3.3) / 4096 ;
// If 20 conversions have been logged, start over
if(ConversionCount == 5)
{
serial_send_coord(Voltage1,1.0);
ConversionCount = 0;
}
else ConversionCount++;
AdcRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; //Clear ADCINT1 flag reinitialize for next SOC
PieCtrlRegs.PIEACK.all = PIEACK_GROUP1; // Acknowledge interrupt to PIE
return;
}
// Test 1,SCIA DLB, 8-bit word, baud rate 0x000F, default, 1 STOP bit, no parity
void scia_echoback_init()
{
// Note: Clocks were turned on to the SCIA peripheral
// in the InitSysCtrl() function
SciaRegs.SCICCR.all =0x0007; // 1 stop bit, No loopback
// No parity,8 char bits,
// async mode, idle-line protocol
SciaRegs.SCICTL1.all =0x0003; // enable TX, RX, internal SCICLK,
// Disable RX ERR, SLEEP, TXWAKE
SciaRegs.SCICTL2.all =0x0003;
SciaRegs.SCICTL2.bit.TXINTENA =1;
SciaRegs.SCICTL2.bit.RXBKINTENA =1;
SciaRegs.SCIHBAUD =0x0000; // 9600 baud @LSPCLK = 15MHz (60 MHz SYSCLK).
SciaRegs.SCILBAUD =0x00C2;
SciaRegs.SCICTL1.all =0x0023; // Relinquish SCI from Reset
}
// Transmit a character from the SCI
void scia_xmit(int a)
{
while (SciaRegs.SCIFFTX.bit.TXFFST != 0) {}
SciaRegs.SCITXBUF=a;
}
void scia_msg(char * msg)
{
int i;
i = 0;
while(msg
!= '\0')
{
scia_xmit(msg);
i++;
}
}
// Initalize the SCI FIFO
void scia_fifo_init()
{
SciaRegs.SCIFFTX.all=0xE040;
SciaRegs.SCIFFRX.all=0x2044;
SciaRegs.SCIFFCT.all=0x0;
}
//===========================================================================
// No more.
//===========================================================================
下面是DSP2803x_Headers_nonBIOS 和F28031 CMD文件
F28031.txt
(8.49 KB)
(下载次数: 2, 2015-8-29 09:05 上传)
F28031.txt
(8.49 KB)
(下载次数: 2, 2015-8-29 09:05 上传)
京公网安备 11010802033920号
