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