PWM.rar_imx31_imx35 p

//----------------------------------------------------------------------------- // // Copyright (C) 2004, Motorola Inc. All Rights Reserved // //------------------------------------------------------------------------------ // // Copyright (C) 2006, Freescale Semiconductor, Inc. All Rights Reserved. // THIS SOURCE CODE, AND ITS USE AND DISTRIBUTION, IS SUBJECT TO THE TERMS // AND CONDITIONS OF THE APPLICABLE LICENSE AGREEMENT // //------------------------------------------------------------------------------ //----------------------------------------------------------------------------- // // File: bsppwm.c // // This file implements the BSP specific functions for PWM. // //----------------------------------------------------------------------------- #include <windows.h> #include "bsp.h" //----------------------------------------------------------------------------- // External Variables //----------------------------------------------------------------------------- // Defines //------------------------------------------------------------------------------ // This will define the choice of clock source in PWMCR register #define PWM_CLKSRC_VAL PWM_PWMCR_CLKSRC_IPG_CLK_32K //------------------------------------------------------------------------------ // Types //------------------------------------------------------------------------------ // Global Variables //------------------------------------------------------------------------------ // Local Variables //------------------------------------------------------------------------------ // Local Functions //------------------------------------------------------------------------------ // // Function: BSPSetClockSource // // This function returns the BSP-specific clock // source selection value for the PWM. // // Parameters: // None // // Returns: // The clock source for the PWM. // //------------------------------------------------------------------------------ UINT32 BSPSetPWMClockSource(void) { return PWM_CLKSRC_VAL; } //------------------------------------------------------------------------------ // // Function: BSPPwmSetClockGatingMode // // This function enable or disable CRM clock for PWM. // // Parameters: // startClocks // [in] boolean variable to enable or disable CRM clock // // Returns: // Return TRUE. // //------------------------------------------------------------------------------ BOOL BSPPwmSetClockGatingMode(BOOL startClocks) { BOOL rc; if (startClocks) { rc = DDKClockSetGatingMode(DDK_CLOCK_GATE_INDEX_PWM, DDK_CLOCK_GATE_MODE_ENABLED_ALL); } else { rc = DDKClockSetGatingMode(DDK_CLOCK_GATE_INDEX_PWM, DDK_CLOCK_GATE_MODE_DISABLED); } return rc; } //------------------------------------------------------------------------------ // // Function: BSPPwmGetClockGatingMode // // This function reads the value of CRM clock for PWM. // // Parameters: // None // // Returns: // Return TRUE if clock is not disabled, else return FALSE. // //------------------------------------------------------------------------------ BOOL BSPPwmGetClockGatingMode() { DDK_CLOCK_GATE_MODE ClockState; DDKClockGetGatingMode(DDK_CLOCK_GATE_INDEX_PWM, &ClockState); if (ClockState != DDK_CLOCK_GATE_MODE_DISABLED) { return TRUE; } else { return FALSE; } } //------------------------------------------------------------------------------ // // Function: BSPPwmIomuxSetPin // // This function configures the IOMUX pin for PWM. // // Parameters: // None // // Returns: // None. // //------------------------------------------------------------------------------ void BSPPwmIomuxSetPin(void) { DDKIomuxSetPinMux(DDK_IOMUX_PIN_PWMO, DDK_IOMUX_OUT_FUNC, DDK_IOMUX_IN_FUNC); }