// TI File $Revision: /main/1 $ // Checkin $Date: August 18, 2006 13:46:19 $ //########################################################################### // // FILE: DSP2833x_EPwm.c // // TITLE: DSP2833x ePWM Initialization & Support Functions. // //########################################################################### // $TI Release: DSP2833x/DSP2823x Header Files V1.20 $ // $Release Date: August 1, 2008 $ //########################################################################### #include "DSP2833x_Device.h" // DSP2833x Headerfile Include File #include "DSP2833x_Examples.h" // DSP2833x Examples Include File //--------------------------------------------------------------------------- // InitEPwm: //--------------------------------------------------------------------------- // This function initializes the ePWM(s) to a known state. // void InitEPwm(void) { // Initialize ePWM1/2/3/4/5/6 //tbd... } //--------------------------------------------------------------------------- // Example: InitEPwmGpio: //--------------------------------------------------------------------------- // This function initializes GPIO pins to function as ePWM pins // // Each GPIO pin can be configured as a GPIO pin or up to 3 different // peripheral functional pins. By default all pins come up as GPIO // inputs after reset. // void InitEPwmGpio(void) { InitEPwm1Gpio(); InitEPwm2Gpio(); InitEPwm3Gpio(); #if DSP28_EPWM4 InitEPwm4Gpio(); #endif // endif DSP28_EPWM4 #if DSP28_EPWM5 InitEPwm5Gpio(); #endif // endif DSP28_EPWM5 #if DSP28_EPWM6 InitEPwm6Gpio(); #endif // endif DSP28_EPWM6 } void InitEPwm1Gpio(void) { EALLOW; /* Enable internal pull-up for the selected pins */ // Pull-ups can be enabled or disabled by the user. // This will enable the pullups for the specified pins. // Comment out other unwanted lines. GpioCtrlRegs.GPAPUD.bit.GPIO0 = 0; // Enable pull-up on GPIO0 (EPWM1A) GpioCtrlRegs.GPAPUD.bit.GPIO1 = 0; // Enable pull-up on GPIO1 (EPWM1B) /* Configure ePWM-1 pins using GPIO regs*/ // This specifies which of the possible GPIO pins will be ePWM1 functional pins. // Comment out other unwanted lines. GpioCtrlRegs.GPAMUX1.bit.GPIO0 = 1; // Configure GPIO0 as EPWM1A GpioCtrlRegs.GPAMUX1.bit.GPIO1 = 1; // Configure GPIO1 as EPWM1B EDIS; } void InitEPwm2Gpio(void) { EALLOW; /* Enable internal pull-up for the selected pins */ // Pull-ups can be enabled or disabled by the user. // This will enable the pullups for the specified pins. // Comment out other unwanted lines. GpioCtrlRegs.GPAPUD.bit.GPIO2 = 0; // Enable pull-up on GPIO2 (EPWM2A) GpioCtrlRegs.GPAPUD.bit.GPIO3 = 0; // Enable pull-up on GPIO3 (EPWM3B) /* Configure ePWM-2 pins using GPIO regs*/ // This specifies which of the possible GPIO pins will be ePWM2 functional pins. // Comment out other unwanted lines. GpioCtrlRegs.GPAMUX1.bit.GPIO2 = 1; // Configure GPIO2 as EPWM2A GpioCtrlRegs.GPAMUX1.bit.GPIO3 = 1; // Configure GPIO3 as EPWM2B EDIS; } void InitEPwm3Gpio(void) { EALLOW; /* Enable internal pull-up for the selected pins */ // Pull-ups can be enabled or disabled by the user. // This will enable the pullups for the specified pins. // Comment out other unwanted lines. GpioCtrlRegs.GPAPUD.bit.GPIO4 = 0; // Enable pull-up on GPIO4 (EPWM3A) GpioCtrlRegs.GPAPUD.bit.GPIO5 = 0; // Enable pull-up on GPIO5 (EPWM3B) /* Configure ePWM-3 pins using GPIO regs*/ // This specifies which of the possible GPIO pins will be ePWM3 functional pins. // Comment out other unwanted lines. GpioCtrlRegs.GPAMUX1.bit.GPIO4 = 1; // Configure GPIO4 as EPWM3A GpioCtrlRegs.GPAMUX1.bit.GPIO5 = 1; // Configure GPIO5 as EPWM3B EDIS; } #if DSP28_EPWM4 void InitEPwm4Gpio(void) { EALLOW; /* Enable internal pull-up for the selected pins */ // Pull-ups can be enabled or disabled by the user. // This will enable the pullups for the specified pins. // Comment out other unwanted lines. GpioCtrlRegs.GPAPUD.bit.GPIO6 = 0; // Enable pull-up on GPIO6 (EPWM4A) GpioCtrlRegs.GPAPUD.bit.GPIO7 = 0; // Enable pull-up on GPIO7 (EPWM4B) /* Configure ePWM-4 pins using GPIO regs*/ // This specifies which of the possible GPIO pins will be ePWM4 functional pins. // Comment out other unwanted lines. GpioCtrlRegs.GPAMUX1.bit.GPIO6 = 1; // Configure GPIO6 as EPWM4A GpioCtrlRegs.GPAMUX1.bit.GPIO7 = 1; // Configure GPIO7 as EPWM4B EDIS; } #endif // endif DSP28_EPWM4 #if DSP28_EPWM5 void InitEPwm5Gpio(void) { EALLOW; /* Enable internal pull-up for the selected pins */ // Pull-ups can be enabled or disabled by the user. // This will enable the pullups for the specified pins. // Comment out other unwanted lines. GpioCtrlRegs.GPAPUD.bit.GPIO8 = 0; // Enable pull-up on GPIO8 (EPWM5A) GpioCtrlRegs.GPAPUD.bit.GPIO9 = 0; // Enable pull-up on GPIO9 (EPWM5B) /* Configure ePWM-5 pins using GPIO regs*/ // This specifies which of the possible GPIO pins will be ePWM5 functional pins. // Comment out other unwanted lines. GpioCtrlRegs.GPAMUX1.bit.GPIO8 = 1; // Configure GPIO8 as EPWM5A GpioCtrlRegs.GPAMUX1.bit.GPIO9 = 1; // Configure GPIO9 as EPWM5B EDIS; } #endif // endif DSP28_EPWM5 #if DSP28_EPWM6 void InitEPwm6Gpio(void) { EALLOW; /* Enable internal pull-up for the selected pins */ // Pull-ups can be enabled or disabled by the user. // This will enable the pullups for the specified pins. // Comment out other unwanted lines. GpioCtrlRegs.GPAPUD.bit.GPIO10 = 0; // Enable pull-up on GPIO10 (EPWM6A) GpioCtrlRegs.GPAPUD.bit.GPIO11 = 0; // Enable pull-up on GPIO11 (EPWM6B) /* Configure ePWM-6 pins using GPIO regs*/ // This specifies which of the possible GPIO pins will be ePWM6 functional pins. // Comment out other unwanted lines. GpioCtrlRegs.GPAMUX1.bit.GPIO10 = 1; // Configure GPIO10 as EPWM6A GpioCtrlRegs.GPAMUX1.bit.GPIO11 = 1; // Configure GPIO11 as EPWM6B EDIS; } #endif // endif DSP28_EPWM6 //--------------------------------------------------------------------------- // Example: InitEPwmSyncGpio: //--------------------------------------------------------------------------- // This function initializes GPIO pins to function as ePWM Synch pins // void InitEPwmSyncGpio(void) { EALLOW; /* Configure EPWMSYNCI */ /* Enable internal pull-up for the selected pins */ // Pull-ups can be enabled or disabled by the user. // This will enable the pullups for the specified pins. // Comment out other unwanted lines. GpioCtrlRegs.GPAPUD.bit.GPIO6 = 0; // Enable pull-up on GPIO6 (EPWMSYNCI) // GpioCtrlRegs.GPBPUD.bit.GPIO32 = 0; // Enable pull-up on GPIO32 (EPWMSYNCI) /* Set qualification for selected pins to asynch only */ // This will select synch to SYSCLKOUT for the selected pins. // Comment out other unwanted lines. GpioCtrlRegs.GPAQSEL1.bit.GPIO6 = 0; // Synch to SYSCLKOUT GPIO6 (EPWMSYNCI) // GpioCtrlRegs.GPBQSEL1.bit.GPIO32 = 0; // Synch to SYSCLKOUT GPIO32 (EPWMSYNCI) /* Configure EPwmSync pins using GPIO regs*/ // This specifies which of the possible GPIO pins will be EPwmSync functional pins. // Comment out other unwanted lines. GpioCtrlRegs.GPAMUX1.bit.GPIO6 = 2; // Enable pull-up on GPIO6 (EPWMSYNCI) // GpioCtrlRegs.GPBMUX1.bit.GPIO32 = 2; // Enable pull-up on GPIO32 (EPWMSYNCI) /* Configure EPWMSYNC0 */ /* Enable internal pull-up for the selected pins */ // Pull-ups can be enabled or disabled by the user. // This will enable the pullups for the specified pins. // Comment out other unwanted lines. // GpioCtrlRegs.GPAPUD.bit.GPIO6 = 0; // Enable pull-up on GPIO6 (EPWMSYNC0) GpioCtrlRegs.GPBPUD.bit.GPIO33 = 0; // Enable pull-up on GPIO33 (EPWMSYNC0) // GpioCtrlRegs.GPAMUX1.bit.GPIO6 = 3; // Enable pull-up on GPIO6 (EPWMSYNC0) GpioCtrlRegs.GPBMUX1.bit.GPIO33 = 2; // Enable pull-up on GPIO33 (EPWMSYNC0) } //--------------------------------------------------------------------------- // Example: InitTzGpio: //--------------------------------------------------------------------------- // This function initializes GPIO pins to function as Trip Zone (TZ) pins // // Each GPIO pin can be configured as a GPIO pin or up to 3 different // peripheral functional pins. By default all pins come up as GPIO // inputs after reset. // void InitTzGpio(void) { EALLOW; /* Enable internal pull-up for the selected pins */ // Pull-ups can be enabled or disabled by the user. // This will enable the pullups for the specified pins. // Comment out other unwanted lines. GpioCtrlRegs.GPAPUD.bit.GPIO12 = 0; // Enable pull-up on GPIO12 (TZ1) GpioCtrlRegs.GPAPUD.bit.GPIO13 = 0; // Enable pull-up on GPIO13 (TZ2) GpioCtrlRegs.GPAPUD.bit.GPIO14 = 0; // Enable pull-up on GPIO14 (TZ3) GpioCtrlRegs.GPAPUD.bit.GPIO15 = 0; // Enable pull-up on GPIO15 (TZ4) GpioCtrlRegs.GPAPUD.bit.GPIO16 = 0; // Enable pull-up on GPIO16 (TZ5) // GpioCtrlRegs.GPAPUD.bit.GPIO28 = 0; // Enable pull-up on GPIO28 (TZ5) GpioCtrlRegs.GPAPUD.bit.GPIO17 = 0; // Enable pull-up on GPIO17 (TZ6) // GpioCtrlRegs.GPAPUD.bit.GPIO29 = 0; // Enable pull-up on GPIO29 (TZ6) /* Set qualification for selected pins to asynch only */ // Inputs are synchronized to SYSCLKOUT by default. // This will select asynch (no qualification) for the selected pins. // Comment out other unwanted lines. GpioCtrlRegs.GPAQSEL1.bit.GPIO12 = 3; // Asynch input GPIO12 (TZ1) GpioCtrlRegs.GPAQSEL1.bit.GPIO13 = 3; // Asynch input GPIO13 (TZ2) GpioCtrlRegs.GPAQSEL1.bit.GPIO14 = 3; // Asynch input GPIO14 (TZ3) GpioCtrlRegs.GPAQSEL1.bit.GPIO15 = 3; // Asynch input GPIO15 (TZ4) GpioCtrlRegs.GPAQSEL2.bit.GPIO16 = 3; // Asynch input GPIO16 (TZ5) // GpioCtrlRegs.GPAQSEL2.bit.GPIO28 = 3; // Asynch input GPIO28 (TZ5) GpioCtrlRegs.GPAQSEL2.bit.GPIO17 = 3; // Asynch input GPIO17 (TZ6) // GpioCtrlRegs.GPAQSEL2.bit.GPIO29 = 3; // Asynch input GPIO29 (TZ6) /* Configure TZ pins using GPIO regs*/ // This specifies which of the possible GPIO pins will be TZ functional pins. // Comment out other unwanted lines. GpioCtrlRegs.GPAMUX1.bit.GPIO12 = 1; // Configure GPIO12 as TZ1 GpioCtrlRegs.GPAMUX1.bit.GPIO13 = 1; // Configure GPIO13 as TZ2 GpioCtrlRegs.GPAMUX1.bit.GPIO14 = 1; // Configure GPIO14 as TZ3 GpioCtrlRegs.GPAMUX1.bit.GPIO15 = 1; // Configure GPIO15 as TZ4 GpioCtrlRegs.GPAMUX2.bit.GPIO16 = 3; // Configure GPIO16 as TZ5 // GpioCtrlRegs.GPAMUX2.bit.GPIO28 = 3; // Configure GPIO28 as TZ5 GpioCtrlRegs.GPAMUX2.bit.GPIO17 = 3; // Configure GPIO17 as TZ6 // GpioCtrlRegs.GPAMUX2.bit.GPIO29 = 3; // Configure GPIO29 as TZ6 EDIS; } //=========================================================================== // End of file. //===========================================================================