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void main(void) { // Step 1. Initialize System Control: // PLL, WatchDog, enable Peripheral Clocks // This example function is found in the F2837xD_SysCtrl.c file. InitSysCtrl(); InitIpc(); #define _STANDALONE 1 #define _FLASH 1 #ifdef _STANDALONE #ifdef _FLASH // Send boot command to allow the CPU02 application to begin execution IPCBootCPU2(C1C2_BROM_BOOTMODE_BOOT_FROM_FLASH); #else // Send boot command to allow the CPU02 application to begin execution IPCBootCPU2(C1C2_BROM_BOOTMODE_BOOT_FROM_RAM); #endif #endif
// Step 2. Initialize GPIO: // This example function is found in the F2837xD_Gpio.c file and // illustrates how to set the GPIO to it's default state. InitGpio(); EALLOW; GpioCtrlRegs.GPEPUD.bit.GPIO157 = 1; // Disable pull-up on GPIO157 (EPWM7A) GpioCtrlRegs.GPEPUD.bit.GPIO158 = 1; // Disable pull-up on GPIO158 (EPWM7B) GpioCtrlRegs.GPEMUX2.bit.GPIO157 = 1; // Configure GPIO157 as EPWM7A GpioCtrlRegs.GPEMUX2.bit.GPIO158 = 1; // Configure GPIO158 as EPWM7B EDIS; // 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 F2837xD_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 F2837xD_DefaultIsr.c. // This function is found in F2837xD_PieVect.c. InitPieVectTable();
MemCopy(&RamfuncsLoadStart, &RamfuncsLoadEnd, &RamfuncsRunStart); InitFlash(); // Enable global Interrupts and higher priority real-time debug events: EINT; // Enable Global interrupt INTM ERTM; // Enable Global realtime interrupt DBGM
// For this case just init GPIO pins for ePWM1 // Only CPU1 can configure GPIO muxing so this is done here // These functions are in the F2837xD_EPwm.c file
//Transfer ownership of EPWM1 and ADCA to CPU02 EALLOW; DevCfgRegs.CPUSEL0.bit.EPWM7 = 1; EDIS;
// Step 6. IDLE loop. Just sit and loop forever (optional): while(1) { asm(" nop"); } }
void main(void) { // Step 1. Initialize System Control: // PLL, WatchDog, enable Peripheral Clocks // This example function is found in the F2837xD_SysCtrl.c file. InitSysCtrl(); InitIpc(); // Step 2. Initialize GPIO: // This example function is found in the F2837xD_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 F2837xD_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 F2837xD_DefaultIsr.c. // This function is found in F2837xD_PieVect.c. InitPieVectTable(); MemCopy(&RamfuncsLoadStart, &RamfuncsLoadEnd, &RamfuncsRunStart); InitFlash(); // Register the EPWM interrupt handler for EPWM1 EALLOW; PieVectTable.EPWM7_INT = &epwm7_isr; EDIS;
//Power up the PWM and ADC EALLOW; CpuSysRegs.PCLKCR2.bit.EPWM7=1;
//Configure the ADC and power it up
//Setup the ADC for continuous conversions on channel 0
// Interrupt where we will change the Deadband EPwm7Regs.ETSEL.bit.INTSEL = ET_CTR_ZERO; // Select INT on Zero event EPwm7Regs.ETSEL.bit.INTEN = 1; // Enable INT EPwm7Regs.ETPS.bit.INTPRD = ET_1ST; // Generate INT on 3rd event
