add modbus slave support
add modbus slave support
This commit is contained in:
Supowang1989
139
components/connectivity/Modbus/3rdparty/freemodbus-v1.6/demo/STR71XTCP/library/pcu.c
vendored
Normal file
139
components/connectivity/Modbus/3rdparty/freemodbus-v1.6/demo/STR71XTCP/library/pcu.c
vendored
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/******************** (C) COPYRIGHT 2003 STMicroelectronics ********************
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* File Name : pcu.c
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* Author : MCD Application Team
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* Date First Issued : 09/09/03
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* Description : This file provides all the Power Control Unit functions
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********************************************************************************
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* History:
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* 24/05/2005 : V3.0
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* 30/11/2004 : V2.0
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* 14/07/2004 : V1.3
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* 01/01/2004 : V1.2
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*******************************************************************************
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THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH
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CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
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AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, INDIRECT
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OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT
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OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION
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CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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*******************************************************************************/
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#include "pcu.h"
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#include "rccu.h"
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/*******************************************************************************
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* Function Name : PCU_VRConfig
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* Description : This routine is used to configure PCU voltage regultors
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* Input 1 : MVR : Main voltage Regulator
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LPR : Low Power Regulator
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* Input 2 : ENABLE : Enable the Voltage Regulator
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DISABLE: Disable ( ByPass ) the VR
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* Return : None
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*******************************************************************************/
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void PCU_VRConfig ( PCU_VR Xvr, FunctionalState NewState )
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{
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u16 Tmp = PCU->PWRCR;
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switch ( Xvr )
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{
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case PCU_MVR :
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// Configure the Main Voltage Regulator
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if (NewState == DISABLE) Tmp |= PCU_MVR_Mask; else Tmp &= ~PCU_MVR_Mask;
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break;
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case PCU_LPR :
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// Configure the Low power Voltage Regulator
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if (NewState == DISABLE) Tmp |= PCU_LPR_Mask; else Tmp &= ~PCU_LPR_Mask;
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break;
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}
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// Unlock Power Control Register
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PCU->PWRCR |= PCU_WREN_Mask;
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PCU->PWRCR = Tmp | PCU_WREN_Mask;
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}
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/*******************************************************************************
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* Function Name : PCU_WFIEnter
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* Description : This routine is used to force the Device to enter in WFI mode
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* Input 1 : CLOCK2_16 : Clock2_16 as system clock for WFI mode
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* EXTERNAL : external clock as system clock for WFI mode
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* Input 2 : ENABLE : Enable Low Power Regulator during Wait For Interrupt Mode
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* DISABLE: Disable Low Power Regulator during Wait For Interrupt Mode
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* Input 3 : ENABLE : Enable Low Power Mode during Wait For Interrupt Mode
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* DISABLE: Disable Low Power Mode during Wait For Interrupt Mode
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* Return : None
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*******************************************************************************/
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void PCU_WFIEnter ( WFI_CLOCKS Xclock, FunctionalState Xlpr, FunctionalState Xlpm )
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{
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u32 Tmp;
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// Enable Low Power Regulator in WFI mode
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Tmp = PCU->PWRCR;
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// Unlock Power Control Register
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PCU->PWRCR |= PCU_WREN_Mask;
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PCU->PWRCR = Xlpr == ENABLE ? Tmp & ~PCU_LPRWFI_Mask : Tmp | PCU_LPRWFI_Mask;
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// WFI Clock Selection
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Tmp = RCCU->CCR;
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RCCU->CCR = Xclock == WFI_CLOCK2_16 ? Tmp & ~PCU_WFI_CKSEL_Mask : Tmp | PCU_WFI_CKSEL_Mask;
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// Low Power Mode during WFI mode
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Tmp = RCCU->CCR;
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RCCU->CCR = Xlpm == DISABLE ? Tmp & ~PCU_LPOWFI_Mask : Tmp | PCU_LPOWFI_Mask;
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// Enter WFI Mode
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RCCU->SMR &= ~0x0001;
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}
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/*******************************************************************************
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* Function Name : PCU_LPMEnter
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* Description : This routine is used to force the device to enter in low
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* power modes
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* Input : PCU_SLOW : Slow Mode
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PCU_STOP : Stop Mode
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PCU_STANDBY : StandBy Mode
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* Return : None
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*******************************************************************************/
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void PCU_LPMEnter ( LPM_MODES Xmode )
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{
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u32 temp;
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switch ( Xmode )
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{
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// Slow Mode
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case PCU_SLOW:
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{
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RCCU->PLL1CR |= 0x87;
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RCCU_RCLKSourceConfig ( RCCU_PLL1_Output );
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break;
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}
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// Stop Mode
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case PCU_STOP:
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{
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// Enable Stop EN bit
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RCCU->CCR |= PCU_STOP_EN_Mask;
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// Write '1' to Stop Bit
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XTI->CTRL |= 0x04;
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// Write '0' to Stop Bit
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XTI->CTRL &= 0x03;
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// Write '1' to Stop Bit
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XTI->CTRL |= 0x04;
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// add Delay
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temp = 0;
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temp = 1;
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temp = 2;
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temp = 3;
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temp = 4;
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temp = 5;
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temp = 6;
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temp = 7;
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temp = 8;
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break;
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}
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// PCU_STANDBY Mode
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case PCU_STANDBY:
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{
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PCU->PWRCR |= PCU_WREN_Mask; // Unlock Power Control Register
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PCU->PWRCR |= PCU_PWRDWN_Mask; // Set the Power Down flag
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}
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}
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}
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/******************* (C) COPYRIGHT 2003 STMicroelectronics *****END OF FILE****/
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