mirror of
https://github.com/eddyem/IR-controller.git
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136 lines
3.2 KiB
C
136 lines
3.2 KiB
C
/*
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* usb_pwr.c - USB power (on/off, suspend, resume)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include "usb_pwr.h"
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__IO uint32_t bDeviceState = UNCONNECTED; /* USB device status */
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__IO bool fSuspendEnabled = FALSE; /* true when suspend is possible */
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struct{
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__IO RESUME_STATE eState;
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__IO uint8_t bESOFcnt;
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} ResumeS;
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RESULT PowerOn(void){
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uint16_t wRegVal;
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USB_Cable_Config(DISABLE);
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/*** CNTR_PWDN = 0 ***/
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wRegVal = CNTR_FRES;
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_SetCNTR(wRegVal);
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/*** CNTR_FRES = 0 ***/
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wInterrupt_Mask = 0;
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_SetCNTR(wInterrupt_Mask);
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/*** Clear pending interrupts ***/
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_SetISTR(0);
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/*** Set interrupt mask ***/
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wInterrupt_Mask = CNTR_RESETM | CNTR_SUSPM | CNTR_WKUPM;
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_SetCNTR(wInterrupt_Mask);
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/*** cable plugged-in ? ***/
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/*while(!CablePluggedIn());*/
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USB_Cable_Config(ENABLE);
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return USB_SUCCESS;
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}
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RESULT PowerOff(){
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/* disable all interrupts and force USB reset */
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_SetCNTR(CNTR_FRES);
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/* clear interrupt status register */
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_SetISTR(0);
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/* Disable the Pull-Up*/
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USB_Cable_Config(DISABLE);
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/* switch-off device */
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_SetCNTR(CNTR_FRES + CNTR_PDWN);
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/* sw variables reset */
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/* ... */
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return USB_SUCCESS;
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}
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void Suspend(void){
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uint16_t wCNTR;
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/* macrocell enters suspend mode */
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wCNTR = _GetCNTR();
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wCNTR |= CNTR_FSUSP;
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_SetCNTR(wCNTR);
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/* force low-power mode in the macrocell */
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wCNTR = _GetCNTR();
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wCNTR |= CNTR_LPMODE;
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_SetCNTR(wCNTR);
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Enter_LowPowerMode();
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}
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void Resume_Init(void){
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uint16_t wCNTR;
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/* CNTR_LPMODE = 0 */
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wCNTR = _GetCNTR();
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wCNTR &= (~CNTR_LPMODE);
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_SetCNTR(wCNTR);
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Leave_LowPowerMode();
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/* reset FSUSP bit */
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_SetCNTR(IMR_MSK);
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}
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void Resume(RESUME_STATE eResumeSetVal){
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uint16_t wCNTR;
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if (eResumeSetVal != RESUME_ESOF)
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ResumeS.eState = eResumeSetVal;
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switch (ResumeS.eState){
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case RESUME_EXTERNAL:
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Resume_Init();
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ResumeS.eState = RESUME_OFF;
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break;
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case RESUME_INTERNAL:
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Resume_Init();
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ResumeS.eState = RESUME_START;
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break;
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case RESUME_LATER:
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ResumeS.bESOFcnt = 2;
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ResumeS.eState = RESUME_WAIT;
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break;
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case RESUME_WAIT:
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ResumeS.bESOFcnt--;
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if (ResumeS.bESOFcnt == 0)
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ResumeS.eState = RESUME_START;
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break;
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case RESUME_START:
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wCNTR = _GetCNTR();
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wCNTR |= CNTR_RESUME;
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_SetCNTR(wCNTR);
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ResumeS.eState = RESUME_ON;
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ResumeS.bESOFcnt = 10;
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break;
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case RESUME_ON:
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ResumeS.bESOFcnt--;
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if (ResumeS.bESOFcnt == 0){
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wCNTR = _GetCNTR();
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wCNTR &= (~CNTR_RESUME);
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_SetCNTR(wCNTR);
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ResumeS.eState = RESUME_OFF;
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}
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break;
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case RESUME_OFF:
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case RESUME_ESOF:
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default:
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ResumeS.eState = RESUME_OFF;
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break;
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}
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}
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