256 lines
8.2 KiB
C
256 lines
8.2 KiB
C
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// TI File $Revision: /main/2 $
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// Checkin $Date: March 15, 2007 16:54:36 $
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//###########################################################################
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//
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// FILE: DSP2833x_ECap.c
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//
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// TITLE: DSP2833x eCAP 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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// InitECap:
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//---------------------------------------------------------------------------
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// This function initializes the eCAP(s) to a known state.
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//
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void InitECap(void)
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{
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// Initialize eCAP1/2/3
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//tbd...
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}
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//---------------------------------------------------------------------------
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// Example: InitECapGpio:
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//---------------------------------------------------------------------------
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// This function initializes GPIO pins to function as ECAP 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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// Caution:
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// For each eCAP peripheral
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// Only one GPIO pin should be enabled for ECAP operation.
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// Comment out other unwanted lines.
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void InitECapGpio()
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{
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InitECap1Gpio();
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#if (DSP28_ECAP2)
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InitECap2Gpio();
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#endif // endif DSP28_ECAP2
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#if (DSP28_ECAP3)
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InitECap3Gpio();
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#endif // endif DSP28_ECAP3
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#if (DSP28_ECAP4)
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InitECap4Gpio();
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#endif // endif DSP28_ECAP4
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#if (DSP28_ECAP5)
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InitECap5Gpio();
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#endif // endif DSP28_ECAP5
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#if (DSP28_ECAP6)
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InitECap6Gpio();
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#endif // endif DSP28_ECAP6
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}
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void InitECap1Gpio(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.GPIO5 = 0; // Enable pull-up on GPIO5 (CAP1)
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GpioCtrlRegs.GPAPUD.bit.GPIO24 = 0; // Enable pull-up on GPIO24 (CAP1)
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// GpioCtrlRegs.GPBPUD.bit.GPIO34 = 0; // Enable pull-up on GPIO34 (CAP1)
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// Inputs are synchronized to SYSCLKOUT by default.
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// Comment out other unwanted lines.
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// GpioCtrlRegs.GPAQSEL1.bit.GPIO5 = 0; // Synch to SYSCLKOUT GPIO5 (CAP1)
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GpioCtrlRegs.GPAQSEL2.bit.GPIO24 = 0; // Synch to SYSCLKOUT GPIO24 (CAP1)
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// GpioCtrlRegs.GPBQSEL1.bit.GPIO34 = 0; // Synch to SYSCLKOUT GPIO34 (CAP1)
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/* Configure eCAP-1 pins using GPIO regs*/
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// This specifies which of the possible GPIO pins will be eCAP1 functional pins.
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// Comment out other unwanted lines.
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// GpioCtrlRegs.GPAMUX1.bit.GPIO5 = 3; // Configure GPIO5 as CAP1
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GpioCtrlRegs.GPAMUX2.bit.GPIO24 = 1; // Configure GPIO24 as CAP1
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// GpioCtrlRegs.GPBMUX1.bit.GPIO34 = 1; // Configure GPIO24 as CAP1
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EDIS;
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}
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#if DSP28_ECAP2
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void InitECap2Gpio(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.GPIO7 = 0; // Enable pull-up on GPIO7 (CAP2)
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// GpioCtrlRegs.GPAPUD.bit.GPIO25 = 0; // Enable pull-up on GPIO25 (CAP2)
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// GpioCtrlRegs.GPBPUD.bit.GPIO37 = 0; // Enable pull-up on GPIO37 (CAP2)
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// Inputs are synchronized to SYSCLKOUT by default.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAQSEL1.bit.GPIO7 = 0; // Synch to SYSCLKOUT GPIO7 (CAP2)
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// GpioCtrlRegs.GPAQSEL2.bit.GPIO25 = 0; // Synch to SYSCLKOUT GPIO25 (CAP2)
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// GpioCtrlRegs.GPBQSEL1.bit.GPIO37 = 0; // Synch to SYSCLKOUT GPIO37 (CAP2)
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/* Configure eCAP-2 pins using GPIO regs*/
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// This specifies which of the possible GPIO pins will be eCAP2 functional pins.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAMUX1.bit.GPIO7 = 3; // Configure GPIO7 as CAP2
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// GpioCtrlRegs.GPAMUX2.bit.GPIO25 = 1; // Configure GPIO25 as CAP2
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// GpioCtrlRegs.GPBMUX1.bit.GPIO37 = 3; // Configure GPIO37 as CAP2
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EDIS;
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}
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#endif // endif DSP28_ECAP2
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#if DSP28_ECAP3
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void InitECap3Gpio(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.GPIO9 = 0; // Enable pull-up on GPIO9 (CAP3)
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// GpioCtrlRegs.GPAPUD.bit.GPIO26 = 0; // Enable pull-up on GPIO26 (CAP3)
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// Inputs are synchronized to SYSCLKOUT by default.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAQSEL1.bit.GPIO9 = 0; // Synch to SYSCLKOUT GPIO9 (CAP3)
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// GpioCtrlRegs.GPAQSEL2.bit.GPIO26 = 0; // Synch to SYSCLKOUT GPIO26 (CAP3)
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/* Configure eCAP-3 pins using GPIO regs*/
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// This specifies which of the possible GPIO pins will be eCAP3 functional pins.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAMUX1.bit.GPIO9 = 3; // Configure GPIO9 as CAP3
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// GpioCtrlRegs.GPAMUX2.bit.GPIO26 = 1; // Configure GPIO26 as CAP3
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EDIS;
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}
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#endif // endif DSP28_ECAP3
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#if DSP28_ECAP4
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void InitECap4Gpio(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.GPIO11 = 0; // Enable pull-up on GPIO11 (CAP4)
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// GpioCtrlRegs.GPAPUD.bit.GPIO27 = 0; // Enable pull-up on GPIO27 (CAP4)
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// Inputs are synchronized to SYSCLKOUT by default.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAQSEL1.bit.GPIO11 = 0; // Synch to SYSCLKOUT GPIO11 (CAP4)
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// GpioCtrlRegs.GPAQSEL2.bit.GPIO27 = 0; // Synch to SYSCLKOUT GPIO27 (CAP4)
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/* Configure eCAP-4 pins using GPIO regs*/
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// This specifies which of the possible GPIO pins will be eCAP4 functional pins.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAMUX1.bit.GPIO11 = 3; // Configure GPIO11 as CAP4
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// GpioCtrlRegs.GPAMUX2.bit.GPIO27 = 1; // Configure GPIO27 as CAP4
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EDIS;
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}
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#endif // endif DSP28_ECAP4
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#if DSP28_ECAP5
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void InitECap5Gpio(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.GPIO3 = 0; // Enable pull-up on GPIO3 (CAP5)
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// GpioCtrlRegs.GPBPUD.bit.GPIO48 = 0; // Enable pull-up on GPIO48 (CAP5)
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// Inputs are synchronized to SYSCLKOUT by default.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAQSEL1.bit.GPIO3 = 0; // Synch to SYSCLKOUT GPIO3 (CAP5)
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// GpioCtrlRegs.GPBQSEL2.bit.GPIO48 = 0; // Synch to SYSCLKOUT GPIO48 (CAP5)
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/* Configure eCAP-5 pins using GPIO regs*/
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// This specifies which of the possible GPIO pins will be eCAP5 functional pins.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAMUX1.bit.GPIO3 = 2; // Configure GPIO3 as CAP5
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// GpioCtrlRegs.GPBMUX2.bit.GPIO48 = 1; // Configure GPIO48 as CAP5
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EDIS;
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}
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#endif // endif DSP28_ECAP5
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#if DSP28_ECAP6
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void InitECap6Gpio(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.GPIO1 = 0; // Enable pull-up on GPIO1 (CAP6)
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// GpioCtrlRegs.GPBPUD.bit.GPIO49 = 0; // Enable pull-up on GPIO49 (CAP6)
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// Inputs are synchronized to SYSCLKOUT by default.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAQSEL1.bit.GPIO1 = 0; // Synch to SYSCLKOUT GPIO1 (CAP6)
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// GpioCtrlRegs.GPBQSEL2.bit.GPIO49 = 0; // Synch to SYSCLKOUT GPIO49 (CAP6)
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/* Configure eCAP-5 pins using GPIO regs*/
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// This specifies which of the possible GPIO pins will be eCAP6 functional pins.
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// Comment out other unwanted lines.
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GpioCtrlRegs.GPAMUX1.bit.GPIO1 = 2; // Configure GPIO1 as CAP6
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// GpioCtrlRegs.GPBMUX2.bit.GPIO49 = 1; // Configure GPIO49 as CAP6
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EDIS;
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}
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#endif // endif DSP28_ECAP6
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//===========================================================================
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// End of file.
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//===========================================================================
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