hello everyone,
especially F2812 Gurus :)
it is possible to use PWM and SPI same app. PWM and SPI are working fine in separate programs. but I can not run them together. here is my code. is there anyone's help me pls. thanks in advance
#include "DSP281x_Device.h"
#include "DSP281x_Examples.h" // DSP281x Examples Include File
// Prototype statements for functions found within this file.
Uint16 RB0=0,RB1=0,RBT;
char OrnekSayisi=15;
long i,timeout,per;
long Volt,TVolt;
void Gpio_select(void);
void InitSystem(void);
void SPI_Init(void);
void ADC_Oku();
void init_eva(void);
interrupt void cpu_timer0_isr(void); // Prototype for Timer 0 Interrupt Service Routine
void main(void)
{
InitSystem(); // Initialize the DSP's core Registers
// Speed_up the silicon A Revision.
// No need to call this function for Rev. C later silicon versions
Gpio_select(); // Setup the GPIO Multiplex Registers
InitPieCtrl(); // Function Call to init PIE-unit ( code : DSP281x_PieCtrl.c)
InitPieVectTable(); // Function call to init PIE vector table ( code : DSP281x_PieVect.c )
// re-map PIE - entry for Timer 0 Interrupt
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
InitCpuTimers();
// Configure CPU-Timer 0 to interrupt every 50 ms:
// 150MHz CPU Freq, 50000 µseconds interrupt period
ConfigCpuTimer(&CpuTimer0, 150, 50000);
// Enable TINT0 in the PIE: Group 1 interrupt 7
PieCtrlRegs.PIEIER1.bit.INTx7 = 1;
// Enable CPU INT1 which is connected to CPU-Timer 0:
IER = 1;
// Enable global Interrupts and higher priority real-time debug events:
EINT; // Enable Global interrupt INTM
ERTM; // Enable Global realtime interrupt DBGM
CpuTimer0Regs.TCR.bit.TSS = 0;
SPI_Init();
init_eva();
while(1)
{
while(CpuTimer0.InterruptCount < 3); // wait for Timer 0
CpuTimer0.InterruptCount = 0;
ADC_Oku();
EALLOW;
SysCtrlRegs.WDKEY = 0xAA; // and serve watchdog #2
EDIS;
}
}
void Gpio_select(void)
{
EALLOW;
GpioMuxRegs.GPAMUX.all = 0x00FF; // PWM 1-6 Enable
GpioMuxRegs.GPBMUX.all = 0x0;
GpioMuxRegs.GPDMUX.all = 0x0;
GpioMuxRegs.GPFMUX.all = 0xF;
GpioMuxRegs.GPEMUX.all = 0x0;
GpioMuxRegs.GPGMUX.all = 0x0;
GpioMuxRegs.GPBDIR.all = 0x00FF; // GPIO Port B15-B8 input , B7-B0 output
GpioMuxRegs.GPDDIR.all = 0x0; // GPIO PORT as input
GpioMuxRegs.GPDDIR.bit.GPIOD0 = 1; // /CS for DAC
GpioMuxRegs.GPDDIR.bit.GPIOD6 = 1; // /CS for EEPROM
GpioMuxRegs.GPEDIR.all = 0x0; // GPIO PORT as input
GpioMuxRegs.GPFDIR.all = 0x0; // GPIO PORT as input
GpioMuxRegs.GPGDIR.all = 0x0; // GPIO PORT as input
GpioDataRegs.GPBDAT.all = 0x0000; // Switch off LED's ( B7...B0)
GpioDataRegs.GPDDAT.bit.GPIOD0 = 1; // deactivate /CS for the DAC
GpioDataRegs.GPDDAT.bit.GPIOD5 = 1; // deactivate /CS for the EEPROM
GpioMuxRegs.GPAQUAL.all = 0x0; // Set GPIO input qualifier values to zero
GpioMuxRegs.GPBQUAL.all = 0x0;
GpioMuxRegs.GPDQUAL.all = 0x0;
GpioMuxRegs.GPEQUAL.all = 0x0;
EDIS;
}
void InitSystem(void)
{
EALLOW;
SysCtrlRegs.WDCR= 0x00AF; // Setup the watchdog
// 0x00E8 to disable the Watchdog , Prescaler = 1
// 0x00AF to NOT disable the Watchdog, Prescaler = 64
SysCtrlRegs.SCSR = 0; // Watchdog generates a RESET
SysCtrlRegs.PLLCR.bit.DIV = 10; // Setup the Clock PLL to multiply by 5
SysCtrlRegs.HISPCP.all = 0x1; // Setup Highspeed Clock Prescaler to divide by 2
SysCtrlRegs.LOSPCP.all = 0x2; // Setup Lowspeed CLock Prescaler to divide by 4
// Peripheral clock enables set for the selected peripherals.
SysCtrlRegs.PCLKCR.bit.EVAENCLK=1;
SysCtrlRegs.PCLKCR.bit.EVBENCLK=0;
SysCtrlRegs.PCLKCR.bit.SCIAENCLK=0;
SysCtrlRegs.PCLKCR.bit.SCIBENCLK=0;
SysCtrlRegs.PCLKCR.bit.MCBSPENCLK=0;
SysCtrlRegs.PCLKCR.bit.SPIENCLK=1;
SysCtrlRegs.PCLKCR.bit.ECANENCLK=0;
SysCtrlRegs.PCLKCR.bit.ADCENCLK=0;
EDIS;
}
interrupt void cpu_timer0_isr(void)
{
CpuTimer0.InterruptCount++;
// Serve the watchdog every Timer 0 interrupt
EALLOW;
SysCtrlRegs.WDKEY = 0x55; // Serve watchdog #1
EDIS;
// Acknowledge this interrupt to receive more interrupts from group 1
PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;
}
void SPI_Init(void)
{
SpiaRegs.SPICCR.all = 0x0047;
// Bit 7 , Reset = 0 :
// Bit 6 , Clock Polarity = 1 : data output on falling edge of CLK
// , together with CLOCK PHASE = 1 : data output is one half cycle before
// , falling edge pf SPICLK
// Bit 5 , reserved
// Bit 4 , SPILBK = 0 : no loopback mode
// Bit 3-0 , Chars = 1111 : 16 bit data transfer
SpiaRegs.SPICTL.all =0x0006;
// Bit 7-5 : reserved
// Bit 4 , Overrun INT Enable = 0 : Disable Receiver Overrun Interrupt
// Bit 3 , Clock-Phase = 1 , one half clock delay
// Bit 2 , Master/Slave = 1 , MASTER
// Bit 1 , Talk = 1 , Enable Transmission
// Bit 0 , SPI INT ENA = 0 , No SPI - Interrupts
SpiaRegs.SPIBRR = 100;
// SPI Baud Rate = LSPCLK / ( SPIBRR + 1)
// = 37,5 MHz / ( 124 + 1 )
// = 300 kHz
SpiaRegs.SPICCR.bit.SPISWRESET = 1; // relinquish SPI from reset
}
void ADC_Oku()
{
GpioDataRegs.GPDDAT.bit.GPIOD0 = 0; // activate /CS for the DAC
SpiaRegs.SPITXBUF = 0x1800;// transmit data to ADC buffer
while (SpiaRegs.SPISTS.bit.INT_FLAG != 1) ; // wait for end of transmission
RBT = SpiaRegs.SPIRXBUF;
SpiaRegs.SPITXBUF = 0x00;// transmit data to DAC-Buffer
while (SpiaRegs.SPISTS.bit.INT_FLAG != 1) ; // wait for end of transmission
RB0 = SpiaRegs.SPIRXBUF;
SpiaRegs.SPITXBUF = 0x00;// transmit data to DAC-Buffer
while (SpiaRegs.SPISTS.bit.INT_FLAG != 1) ; // wait for end of transmission
RB1 = SpiaRegs.SPIRXBUF;
for (i=0;i<100;i++); // wait for DAC to finish off
GpioDataRegs.GPDDAT.bit.GPIOD0 = 1; // deactivate /CS for the DAC
Volt = (long)( ( ( (RB0<<8) | RB1>>4)) );
TVolt = Volt * 2990 /16153 ;
}
void init_eva()
{
// EVA Configure T1PWM, T2PWM, PWM1-PWM6
// Initalize the timers
// Initalize EVA Timer1
EvaRegs.T1PR = 1875; // Timer1 period 5KHZ
EvaRegs.T1CMPR = 100; // Timer1 compare %10 duty
EvaRegs.T1CNT = 0x0000; // Timer1 counter
// TMODE = continuous up/down
// Timer enable
// Timer compare enable
EvaRegs.T1CON.all = 0x1042;
// Setup T1PWM and T2PWM
// Drive T1/T2 PWM by compare logic
EvaRegs.GPTCONA.bit.TCMPOE = 1;
// Polarity of GP Timer 1 Compare = Active low
EvaRegs.GPTCONA.bit.T1PIN = 1;
// Polarity of GP Timer 2 Compare = Active high
EvaRegs.GPTCONA.bit.T2PIN = 2;
// Enable compare for PWM1-PWM6
EvaRegs.CMPR1 = 100; //%10 duty
// Compare action control. Action that takes place
// on a cmpare event
// output pin 1 CMPR1 - active high
// output pin 2 CMPR1 - active low
// output pin 3 CMPR2 - active high
// output pin 4 CMPR2 - active low
// output pin 5 CMPR3 - active high
// output pin 6 CMPR3 - active low
EvaRegs.ACTRA.all = 0x0666;
EvaRegs.DBTCONA.all = 0x0000; // Disable deadband
EvaRegs.COMCONA.all = 0xA600;
}
#include "DSP281x_Device.h"
#include "DSP281x_Examples.h" // DSP281x Examples Include File
// Prototype statements for functions found within this file.
Uint16 RB0=0,RB1=0,RBT;
char OrnekSayisi=15;
long i,timeout,per;
long Volt,TVolt;
void Gpio_select(void);
void InitSystem(void);
void SPI_Init(void);
void ADC_Oku();
void init_eva(void);
interrupt void cpu_timer0_isr(void); // Prototype for Timer 0 Interrupt Service Routine
void main(void)
{
InitSystem(); // Initialize the DSP's core Registers
// Speed_up the silicon A Revision.
// No need to call this function for Rev. C later silicon versions
Gpio_select(); // Setup the GPIO Multiplex Registers
InitPieCtrl(); // Function Call to init PIE-unit ( code : DSP281x_PieCtrl.c)
InitPieVectTable(); // Function call to init PIE vector table ( code : DSP281x_PieVect.c )
// re-map PIE - entry for Timer 0 Interrupt
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
InitCpuTimers();
// Configure CPU-Timer 0 to interrupt every 50 ms:
// 150MHz CPU Freq, 50000 �seconds interrupt period
ConfigCpuTimer(&CpuTimer0, 150, 50000);
// Enable TINT0 in the PIE: Group 1 interrupt 7
PieCtrlRegs.PIEIER1.bit.INTx7 = 1;
// Enable CPU INT1 which is connected to CPU-Timer 0:
IER = 1;
// Enable global Interrupts and higher priority real-time debug events:
EINT; // Enable Global interrupt INTM
ERTM; // Enable Global realtime interrupt DBGM
CpuTimer0Regs.TCR.bit.TSS = 0;
SPI_Init();
init_eva();
while(1)
{
while(CpuTimer0.InterruptCount < 3); // wait for Timer 0
CpuTimer0.InterruptCount = 0;
ADC_Oku();
EALLOW;
SysCtrlRegs.WDKEY = 0xAA; // and serve watchdog #2
EDIS;
}
}
void Gpio_select(void)
{
EALLOW;
GpioMuxRegs.GPAMUX.all = 0x00FF; // PWM 1-6 Enable
GpioMuxRegs.GPBMUX.all = 0x0;
GpioMuxRegs.GPDMUX.all = 0x0;
GpioMuxRegs.GPFMUX.all = 0xF;
GpioMuxRegs.GPEMUX.all = 0x0;
GpioMuxRegs.GPGMUX.all = 0x0;
GpioMuxRegs.GPBDIR.all = 0x00FF; // GPIO Port B15-B8 input , B7-B0 output
GpioMuxRegs.GPDDIR.all = 0x0; // GPIO PORT as input
GpioMuxRegs.GPDDIR.bit.GPIOD0 = 1; // /CS for DAC
GpioMuxRegs.GPDDIR.bit.GPIOD6 = 1; // /CS for EEPROM
GpioMuxRegs.GPEDIR.all = 0x0; // GPIO PORT as input
GpioMuxRegs.GPFDIR.all = 0x0; // GPIO PORT as input
GpioMuxRegs.GPGDIR.all = 0x0; // GPIO PORT as input
GpioDataRegs.GPBDAT.all = 0x0000; // Switch off LED's ( B7...B0)
GpioDataRegs.GPDDAT.bit.GPIOD0 = 1; // deactivate /CS for the DAC
GpioDataRegs.GPDDAT.bit.GPIOD5 = 1; // deactivate /CS for the EEPROM
GpioMuxRegs.GPAQUAL.all = 0x0; // Set GPIO input qualifier values to zero
GpioMuxRegs.GPBQUAL.all = 0x0;
GpioMuxRegs.GPDQUAL.all = 0x0;
GpioMuxRegs.GPEQUAL.all = 0x0;
EDIS;
}
void InitSystem(void)
{
EALLOW;
SysCtrlRegs.WDCR= 0x00AF; // Setup the watchdog
// 0x00E8 to disable the Watchdog , Prescaler = 1
// 0x00AF to NOT disable the Watchdog, Prescaler = 64
SysCtrlRegs.SCSR = 0; // Watchdog generates a RESET
SysCtrlRegs.PLLCR.bit.DIV = 10; // Setup the Clock PLL to multiply by 5
SysCtrlRegs.HISPCP.all = 0x1; // Setup Highspeed Clock Prescaler to divide by 2
SysCtrlRegs.LOSPCP.all = 0x2; // Setup Lowspeed CLock Prescaler to divide by 4
// Peripheral clock enables set for the selected peripherals.
SysCtrlRegs.PCLKCR.bit.EVAENCLK=1;
SysCtrlRegs.PCLKCR.bit.EVBENCLK=0;
SysCtrlRegs.PCLKCR.bit.SCIAENCLK=0;
SysCtrlRegs.PCLKCR.bit.SCIBENCLK=0;
SysCtrlRegs.PCLKCR.bit.MCBSPENCLK=0;
SysCtrlRegs.PCLKCR.bit.SPIENCLK=1;
SysCtrlRegs.PCLKCR.bit.ECANENCLK=0;
SysCtrlRegs.PCLKCR.bit.ADCENCLK=0;
EDIS;
}
interrupt void cpu_timer0_isr(void)
{
CpuTimer0.InterruptCount++;
// Serve the watchdog every Timer 0 interrupt
EALLOW;
SysCtrlRegs.WDKEY = 0x55; // Serve watchdog #1
EDIS;
// Acknowledge this interrupt to receive more interrupts from group 1
PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;
}
void SPI_Init(void)
{
SpiaRegs.SPICCR.all = 0x0047;
// Bit 7 , Reset = 0 :
// Bit 6 , Clock Polarity = 1 : data output on falling edge of CLK
// , together with CLOCK PHASE = 1 : data output is one half cycle before
// , falling edge pf SPICLK
// Bit 5 , reserved
// Bit 4 , SPILBK = 0 : no loopback mode
// Bit 3-0 , Chars = 1111 : 16 bit data transfer
SpiaRegs.SPICTL.all =0x0006;
// Bit 7-5 : reserved
// Bit 4 , Overrun INT Enable = 0 : Disable Receiver Overrun Interrupt
// Bit 3 , Clock-Phase = 1 , one half clock delay
// Bit 2 , Master/Slave = 1 , MASTER
// Bit 1 , Talk = 1 , Enable Transmission
// Bit 0 , SPI INT ENA = 0 , No SPI - Interrupts
SpiaRegs.SPIBRR = 100;
// SPI Baud Rate = LSPCLK / ( SPIBRR + 1)
// = 37,5 MHz / ( 124 + 1 )
// = 300 kHz
SpiaRegs.SPICCR.bit.SPISWRESET = 1; // relinquish SPI from reset
}
void ADC_Oku()
{
GpioDataRegs.GPDDAT.bit.GPIOD0 = 0; // activate /CS for the DAC
SpiaRegs.SPITXBUF = 0x1800;// transmit data to ADC buffer
while (SpiaRegs.SPISTS.bit.INT_FLAG != 1) ; // wait for end of transmission
RBT = SpiaRegs.SPIRXBUF;
SpiaRegs.SPITXBUF = 0x00;// transmit data to DAC-Buffer
while (SpiaRegs.SPISTS.bit.INT_FLAG != 1) ; // wait for end of transmission
RB0 = SpiaRegs.SPIRXBUF;
SpiaRegs.SPITXBUF = 0x00;// transmit data to DAC-Buffer
while (SpiaRegs.SPISTS.bit.INT_FLAG != 1) ; // wait for end of transmission
RB1 = SpiaRegs.SPIRXBUF;
for (i=0;i<100;i++); // wait for DAC to finish off
GpioDataRegs.GPDDAT.bit.GPIOD0 = 1; // deactivate /CS for the DAC
Volt = (long)( ( ( (RB0<<8) | RB1>>4)) );
TVolt = Volt * 2990 /16153 ;
}
void init_eva()
{
// EVA Configure T1PWM, T2PWM, PWM1-PWM6
// Initalize the timers
// Initalize EVA Timer1
EvaRegs.T1PR = 1875; // Timer1 period 5KHZ
EvaRegs.T1CMPR = 100; // Timer1 compare %10 duty
EvaRegs.T1CNT = 0x0000; // Timer1 counter
// TMODE = continuous up/down
// Timer enable
// Timer compare enable
EvaRegs.T1CON.all = 0x1042;
// Setup T1PWM and T2PWM
// Drive T1/T2 PWM by compare logic
EvaRegs.GPTCONA.bit.TCMPOE = 1;
// Polarity of GP Timer 1 Compare = Active low
EvaRegs.GPTCONA.bit.T1PIN = 1;
// Polarity of GP Timer 2 Compare = Active high
EvaRegs.GPTCONA.bit.T2PIN = 2;
// Enable compare for PWM1-PWM6
EvaRegs.CMPR1 = 100; //%10 duty
// Compare action control. Action that takes place
// on a cmpare event
// output pin 1 CMPR1 - active high
// output pin 2 CMPR1 - active low
// output pin 3 CMPR2 - active high
// output pin 4 CMPR2 - active low
// output pin 5 CMPR3 - active high
// output pin 6 CMPR3 - active low
EvaRegs.ACTRA.all = 0x0666;
EvaRegs.DBTCONA.all = 0x0000; // Disable deadband
EvaRegs.COMCONA.all = 0xA600;
}
