void main(void)
{
CPU_Handle myCpu;
PLL_Handle myPll;
WDOG_Handle myWDog;
// Initialize all the handles needed for this application
myClk = CLK_init((void *)CLK_BASE_ADDR, sizeof(CLK_Obj));
myCpu = CPU_init((void *)NULL, sizeof(CPU_Obj));
myFlash = FLASH_init((void *)FLASH_BASE_ADDR, sizeof(FLASH_Obj));
myGpio = GPIO_init((void *)GPIO_BASE_ADDR, sizeof(GPIO_Obj));
myPie = PIE_init((void *)PIE_BASE_ADDR, sizeof(PIE_Obj));
myPll = PLL_init((void *)PLL_BASE_ADDR, sizeof(PLL_Obj));
myPwm1 = PWM_init((void *)PWM_ePWM1_BASE_ADDR, sizeof(PWM_Obj));
myPwm2 = PWM_init((void *)PWM_ePWM2_BASE_ADDR, sizeof(PWM_Obj));
myPwm3 = PWM_init((void *)PWM_ePWM3_BASE_ADDR, sizeof(PWM_Obj));
myPwm4 = PWM_init((void *)PWM_ePWM4_BASE_ADDR, sizeof(PWM_Obj));
myWDog = WDOG_init((void *)WDOG_BASE_ADDR, sizeof(WDOG_Obj));
// Perform basic system initialization
WDOG_disable(myWDog);
CLK_enableAdcClock(myClk);
(*Device_cal)();
CLK_disableAdcClock(myClk);
//Select the internal oscillator 1 as the clock source
CLK_setOscSrc(myClk, CLK_OscSrc_Internal);
// Setup the PLL for x12 /2 which will yield 60Mhz = 10Mhz * 12 / 2
PLL_setup(myPll, PLL_Multiplier_12, PLL_DivideSelect_ClkIn_by_2);
// Disable the PIE and all interrupts
PIE_disable(myPie);
PIE_disableAllInts(myPie);
CPU_disableGlobalInts(myCpu);
CPU_clearIntFlags(myCpu);
// If running from flash copy RAM only functions to RAM
#ifdef _FLASH
memcpy(&RamfuncsRunStart, &RamfuncsLoadStart, (size_t)&RamfuncsLoadSize);
#endif
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the f2802x_SysCtrl.c file.
// InitSysCtrl();
// Step 2. Initialize GPIO:
// This example function is found in the f2802x_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
// InitGpio(); // Skipped for this example
// For this case, just init GPIO for EPwm1-EPwm4
// For this case just init GPIO pins for EPwm1, EPwm2, EPwm3, EPwm4
// These functions are in the f2802x_EPwm.c file
// InitEPwm1Gpio();
// InitEPwm2Gpio();
// InitEPwm3Gpio();
// InitEPwm4Gpio();
// 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 f2802x_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 f2802x_DefaultIsr.c.
// This function is found in f2802x_PieVect.c.
// InitPieVectTable();
// For this case just init GPIO pins for EPwm1, EPwm2, EPwm3, EPwm4
GPIO_setPullUp(myGpio, GPIO_Number_0, GPIO_PullUp_Disable);
GPIO_setPullUp(myGpio, GPIO_Number_1, GPIO_PullUp_Disable);
GPIO_setMode(myGpio, GPIO_Number_0, GPIO_0_Mode_EPWM1A);
GPIO_setMode(myGpio, GPIO_Number_1, GPIO_1_Mode_EPWM1B);
GPIO_setPullUp(myGpio, GPIO_Number_2, GPIO_PullUp_Disable);
GPIO_setPullUp(myGpio, GPIO_Number_3, GPIO_PullUp_Disable);
GPIO_setMode(myGpio, GPIO_Number_2, GPIO_2_Mode_EPWM2A);
GPIO_setMode(myGpio, GPIO_Number_3, GPIO_3_Mode_EPWM2B);
GPIO_setPullUp(myGpio, GPIO_Number_4, GPIO_PullUp_Disable);
GPIO_setPullUp(myGpio, GPIO_Number_5, GPIO_PullUp_Disable);
GPIO_setMode(myGpio, GPIO_Number_4, GPIO_4_Mode_EPWM3A);
GPIO_setMode(myGpio, GPIO_Number_5, GPIO_5_Mode_EPWM3B);
GPIO_setPullUp(myGpio, GPIO_Number_6, GPIO_PullUp_Disable);
GPIO_setPullUp(myGpio, GPIO_Number_7, GPIO_PullUp_Disable);
GPIO_setMode(myGpio, GPIO_Number_6, GPIO_6_Mode_EPWM4A);
GPIO_setMode(myGpio, GPIO_Number_7, GPIO_7_Mode_EPWM4B);
// Setup a debug vector table and enable the PIE
PIE_setDebugIntVectorTable(myPie);
PIE_enable(myPie);
CLK_enablePwmClock(myClk, PWM_Number_1);
CLK_enablePwmClock(myClk, PWM_Number_2);
CLK_enablePwmClock(myClk, PWM_Number_3);
CLK_enablePwmClock(myClk, PWM_Number_4);
// For this example, only initialize the EPwm
// Step 4. User specific code, enable interrupts:
update =1;
DutyFine =0;
CLK_disableTbClockSync(myClk);
// Some useful Period vs Frequency values
// SYSCLKOUT = 60 MHz 40 MHz
// --------------------------------------
// Period Frequency Frequency
// 1000 60 kHz 40 kHz
// 800 75 kHz 50 kHz
// 600 100 kHz 67 kHz
// 500 120 kHz 80 kHz
// 250 240 kHz 160 kHz
// 200 300 kHz 200 kHz
// 100 600 kHz 400 kHz
// 50 1.2 Mhz 800 kHz
// 25 2.4 Mhz 1.6 MHz
// 20 3.0 Mhz 2.0 MHz
// 12 5.0 MHz 3.3 MHz
// 10 6.0 MHz 4.0 MHz
// 9 6.7 MHz 4.4 MHz
// 8 7.5 MHz 5.0 MHz
// 7 8.6 MHz 5.7 MHz
// 6 10.0 MHz 6.6 MHz
// 5 12.0 MHz 8.0 MHz
//====================================================================
// EPwm and HRPWM register initialization
//====================================================================
HRPWM1_Config(10); // EPwm1 target, Period = 10
HRPWM2_Config(20); // EPwm2 target, Period = 20
HRPWM3_Config(10); // EPwm3 target, Period = 10
HRPWM4_Config(20); // EPwm4 target, Period = 20
CLK_enableTbClockSync(myClk);
while (update ==1)
{
PWM_setCmpAHr(myPwm1, DutyFine << 8);
PWM_setCmpAHr(myPwm2, DutyFine << 8);
PWM_setCmpAHr(myPwm3, DutyFine << 8);
PWM_setCmpAHr(myPwm4, DutyFine << 8);
}
}
void main(void)
{
// WARNING: Always ensure you call memcpy before running any functions from RAM
// InitSysCtrl includes a call to a RAM based function and without a call to
// memcpy first, the processor will go "into the weeds"
#ifdef _FLASH
memcpy(&RamfuncsRunStart, &RamfuncsLoadStart, (size_t)&RamfuncsLoadSize);
#endif
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the f2802x_SysCtrl.c file.
InitSysCtrl();
// Step 2. Initialize GPIO:
// This example function is found in the f2802x_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
// InitGpio(); // Skipped for this example
// For this case, just init GPIO for EPwm1-EPwm4
// For this case just init GPIO pins for EPwm1, EPwm2, EPwm3, EPwm4
// These functions are in the f2802x_EPwm.c file
InitEPwm1Gpio();
InitEPwm2Gpio();
InitEPwm3Gpio();
InitEPwm4Gpio();
// 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 f2802x_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 f2802x_DefaultIsr.c.
// This function is found in f2802x_PieVect.c.
InitPieVectTable();
// Step 4. Initialize all the Device Peripherals:
// Not required for this example
// For this example, only initialize the EPwm
// Step 5. User specific code, enable interrupts:
update =1;
DutyFine =0;
EALLOW;
SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 0;
EDIS;
// Some useful Period vs Frequency values
// SYSCLKOUT = 60 MHz 40 MHz
// --------------------------------------
// Period Frequency Frequency
// 1000 60 kHz 40 kHz
// 800 75 kHz 50 kHz
// 600 100 kHz 67 kHz
// 500 120 kHz 80 kHz
// 250 240 kHz 160 kHz
// 200 300 kHz 200 kHz
// 100 600 kHz 400 kHz
// 50 1.2 Mhz 800 kHz
// 25 2.4 Mhz 1.6 MHz
// 20 3.0 Mhz 2.0 MHz
// 12 5.0 MHz 3.3 MHz
// 10 6.0 MHz 4.0 MHz
// 9 6.7 MHz 4.4 MHz
// 8 7.5 MHz 5.0 MHz
// 7 8.6 MHz 5.7 MHz
// 6 10.0 MHz 6.6 MHz
// 5 12.0 MHz 8.0 MHz
//====================================================================
// ePWM and HRPWM register initialization
//====================================================================
HRPWM1_Config(10); // ePWM1 target, Period = 10
HRPWM2_Config(20); // ePWM2 target, Period = 20
HRPWM3_Config(10); // ePWM3 target, Period = 10
HRPWM4_Config(20); // ePWM4 target, Period = 20
EALLOW;
SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 1;
EDIS;
while (update ==1)
{
for(DutyFine =1; DutyFine <256 ;DutyFine ++)
{
// Example, write to the HRPWM extension of CMPA
EPwm1Regs.CMPA.half.CMPAHR = DutyFine << 8; // Left shift by 8 to write into MSB bits
EPwm2Regs.CMPA.half.CMPAHR = DutyFine << 8; // Left shift by 8 to write into MSB bits
// Example, 32-bit write to CMPA:CMPAHR
EPwm3Regs.CMPA.all = ((Uint32)EPwm3Regs.CMPA.half.CMPA << 16) + (DutyFine << 8);
EPwm4Regs.CMPA.all = ((Uint32)EPwm4Regs.CMPA.half.CMPA << 16) + (DutyFine << 8);
for (i=0;i<10000;i++){} // Dummy delay between MEP changes
}
}
}
//
// Main
//
void main(void)
{
EALLOW;
//
// Step 1. Initialize System Control for Control and Analog Subsystems
// Enable Peripheral Clocks
// This example function is found in the F2837xS_SysCtrl.c file.
//
InitSysCtrl();
EDIS;
InitEPwmGpio(); // EPWM1A and EPWM1B through all PWMS
ePWM[1] = &EPwm1Regs; // PWM Address Map
ePWM[2] = &EPwm2Regs; // PWM Address Map
ePWM[3] = &EPwm3Regs; // PWM Address Map
ePWM[4] = &EPwm4Regs; // PWM Address Map
ePWM[5] = &EPwm5Regs; // PWM Address Map
ePWM[6] = &EPwm6Regs; // PWM Address Map
ePWM[7] = &EPwm7Regs; // PWM Address Map
ePWM[8] = &EPwm8Regs; // PWM Address Map
ePWM[9] = &EPwm9Regs; // PWM Address Map
InitEPwmGpio(); // EPWM1A and EPWM1B -
DINT; // Disable CPU interrupts
//
// 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 F2837xS_PieCtrl.c file.
//
InitPieCtrl();
//
// Disable CPU interrupts and clear all CPU interrupt flags:
//
EALLOW;
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 F2837xS_DefaultIsr.c.
// This function is found in F2837xS_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
// EDIS; // This is needed to disable write to EALLOW protected registers
//
// Enable interrupts required for this example
//
PieCtrlRegs.PIECTRL.bit.ENPIE = 1; // Enable the PIE block
IER = 0x400; // Enable CPU INT
//
// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.
// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.
//
//
// Step 5. User specific code, enable interrupts:
//
update =1;
DutyFine =0;
EALLOW;
CpuSysRegs.PCLKCR0.bit.TBCLKSYNC = 0;
EDIS;
//
// EPwm and HRPWM register initialization
//
HRPWM1_Config(30); // EPwm1 target, Period = 10
HRPWM2_Config(20); // EPwm2 target, Period = 20
HRPWM3_Config(20); // EPwm3 target, Period = 10
HRPWM4_Config(20); // EPwm4 target, Period = 20
HRPWM5_Config(20); // EPwm1 target, Period = 10
HRPWM6_Config(20); // EPwm2 target, Period = 20
HRPWM7_Config(20); // EPwm3 target, Period = 10
HRPWM8_Config(20); // EPwm4 target, Period = 20
EALLOW;
CpuSysRegs.PCLKCR0.bit.TBCLKSYNC = 1;
EDIS;
while(update == 1)
{
//
// Example, write to the HRPWM extension of CMPA / CMPB
//
EPwm1Regs.CMPA.bit.CMPAHR = DutyFine << 8;
EPwm1Regs.CMPB.all = DutyFine << 8;
EPwm2Regs.CMPA.bit.CMPAHR = DutyFine << 8;
EPwm2Regs.CMPB.all = DutyFine << 8;
//
// Example, 32-bit write to CMPA:CMPAHR
//
EPwm3Regs.CMPA.all = ((Uint32)EPwm3Regs.CMPA.bit.CMPA << 16) +
(DutyFine << 8);
EPwm3Regs.CMPB.all = DutyFine << 8;
EPwm4Regs.CMPB.all = (DutyFine << 8);
EPwm4Regs.CMPA.bit.CMPAHR = (DutyFine << 8);
//
// Example, write to the HRPWM extension of CMPA / CMPB
//
EPwm5Regs.CMPA.bit.CMPAHR = DutyFine << 8;
EPwm5Regs.CMPB.all = DutyFine << 8;
EPwm6Regs.CMPA.bit.CMPAHR = DutyFine << 8;
EPwm6Regs.CMPB.all = DutyFine << 8;
//
// Example, write to the HRPWM extension of CMPA / CMPB
//
EPwm7Regs.CMPA.bit.CMPAHR = DutyFine << 8;
EPwm7Regs.CMPB.all = DutyFine << 8;
EPwm8Regs.CMPA.bit.CMPAHR = DutyFine << 8;
EPwm8Regs.CMPB.all = DutyFine << 8;
}
//
// Enable global Interrupts and higher priority real-time debug events:
//
EINT; // Enable Global interrupt INTM
ERTM; // Enable Global realtime interrupt DBGM
for(;;); // Step 6. IDLE loop. Just sit and loop forever (optional):
}
