Diff: usb/usb_pwr.c

Revision:

0:9dcf85d9b2f3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usb/usb_pwr.c	Mon Sep 04 12:05:05 2017 +0000
@@ -0,0 +1,256 @@
+/******************** (C) COPYRIGHT 2011 STMicroelectronics ********************
+* File Name          : usb_pwr.c
+* Author             : MCD Application Team
+* Version            : V3.3.0
+* Date               : 21-March-2011
+* Description        : Connection/disconnection & power management
+********************************************************************************
+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+*******************************************************************************/
+
+/* Includes ------------------------------------------------------------------*/
+#ifdef STM32L1XX_MD
+ #include "stm32l1xx.h"
+#else
+ #include "stm32f10x.h"
+#endif /* STM32L1XX_MD */
+ 
+#include "usb_lib.h"
+#include "usb_conf.h"
+#include "usb_pwr.h"
+#include "hw_config.h"
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+__IO uint32_t bDeviceState = UNCONNECTED; /* USB device status */
+__IO bool fSuspendEnabled = TRUE;  /* true when suspend is possible */
+
+struct
+{
+  __IO RESUME_STATE eState;
+  __IO uint8_t bESOFcnt;
+}ResumeS;
+
+/* Extern variables ----------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Extern function prototypes ------------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/*******************************************************************************
+* Function Name  : PowerOn
+* Description    :
+* Input          : None.
+* Output         : None.
+* Return         : USB_SUCCESS.
+*******************************************************************************/
+RESULT PowerOn(void)
+{
+#ifndef STM32F10X_CL
+  uint16_t wRegVal;
+
+  /*** cable plugged-in ? ***/
+  USB_Cable_Config(ENABLE);
+
+  /*** CNTR_PWDN = 0 ***/
+  wRegVal = CNTR_FRES;
+  _SetCNTR(wRegVal);
+
+  /*** CNTR_FRES = 0 ***/
+  wInterrupt_Mask = 0;
+  _SetCNTR(wInterrupt_Mask);
+  /*** Clear pending interrupts ***/
+  _SetISTR(0);
+  /*** Set interrupt mask ***/
+  wInterrupt_Mask = CNTR_RESETM | CNTR_SUSPM | CNTR_WKUPM;
+  _SetCNTR(wInterrupt_Mask);
+#endif /* STM32F10X_CL */
+
+  return USB_SUCCESS;
+}
+
+/*******************************************************************************
+* Function Name  : PowerOff
+* Description    : handles switch-off conditions
+* Input          : None.
+* Output         : None.
+* Return         : USB_SUCCESS.
+*******************************************************************************/
+RESULT PowerOff()
+{
+#ifndef STM32F10X_CL
+  /* disable all interrupts and force USB reset */
+  _SetCNTR(CNTR_FRES);
+  /* clear interrupt status register */
+  _SetISTR(0);
+  /* Disable the Pull-Up*/
+  USB_Cable_Config(DISABLE);
+  /* switch-off device */
+  _SetCNTR(CNTR_FRES + CNTR_PDWN);
+#endif /* STM32F10X_CL */
+
+  /* sw variables reset */
+  /* ... */
+
+  return USB_SUCCESS;
+}
+
+/*******************************************************************************
+* Function Name  : Suspend
+* Description    : sets suspend mode operating conditions
+* Input          : None.
+* Output         : None.
+* Return         : USB_SUCCESS.
+*******************************************************************************/
+void Suspend(void)
+{
+#ifndef STM32F10X_CL
+  uint16_t wCNTR;
+  /* suspend preparation */
+  /* ... */
+
+  /* macrocell enters suspend mode */
+  wCNTR = _GetCNTR();
+  wCNTR |= CNTR_FSUSP;
+  _SetCNTR(wCNTR);
+#endif /* STM32F10X_CL */
+
+  /* ------------------ ONLY WITH BUS-POWERED DEVICES ---------------------- */
+  /* power reduction */
+  /* ... on connected devices */
+
+#ifndef STM32F10X_CL
+  /* force low-power mode in the macrocell */
+  wCNTR = _GetCNTR();
+  wCNTR |= CNTR_LPMODE;
+  _SetCNTR(wCNTR);
+#endif /* STM32F10X_CL */
+
+  /* switch-off the clocks */
+  /* ... */
+  Enter_LowPowerMode();
+
+}
+
+/*******************************************************************************
+* Function Name  : Resume_Init
+* Description    : Handles wake-up restoring normal operations
+* Input          : None.
+* Output         : None.
+* Return         : USB_SUCCESS.
+*******************************************************************************/
+void Resume_Init(void)
+{
+#ifndef STM32F10X_CL
+  uint16_t wCNTR;
+#endif /* STM32F10X_CL */ 
+
+  /* ------------------ ONLY WITH BUS-POWERED DEVICES ---------------------- */
+  /* restart the clocks */
+  /* ...  */
+
+#ifndef STM32F10X_CL
+  /* CNTR_LPMODE = 0 */
+  wCNTR = _GetCNTR();
+  wCNTR &= (~CNTR_LPMODE);
+  _SetCNTR(wCNTR);
+#endif /* STM32F10X_CL */ 
+
+  /* restore full power */
+  /* ... on connected devices */
+  Leave_LowPowerMode();
+
+#ifndef STM32F10X_CL
+  /* reset FSUSP bit */
+  _SetCNTR(IMR_MSK);
+#endif /* STM32F10X_CL */
+
+  /* reverse suspend preparation */
+  /* ... */
+
+}
+
+/*******************************************************************************
+* Function Name  : Resume
+* Description    : This is the state machine handling resume operations and
+*                 timing sequence. The control is based on the Resume structure
+*                 variables and on the ESOF interrupt calling this subroutine
+*                 without changing machine state.
+* Input          : a state machine value (RESUME_STATE)
+*                  RESUME_ESOF doesn't change ResumeS.eState allowing
+*                  decrementing of the ESOF counter in different states.
+* Output         : None.
+* Return         : None.
+*******************************************************************************/
+void Resume(RESUME_STATE eResumeSetVal)
+{
+#ifndef STM32F10X_CL
+  uint16_t wCNTR;
+#endif /* STM32F10X_CL */
+
+  if (eResumeSetVal != RESUME_ESOF)
+    ResumeS.eState = eResumeSetVal;
+
+  switch (ResumeS.eState)
+  {
+    case RESUME_EXTERNAL:
+      Resume_Init();
+      ResumeS.eState = RESUME_OFF;
+      break;
+    case RESUME_INTERNAL:
+      Resume_Init();
+      ResumeS.eState = RESUME_START;
+      break;
+    case RESUME_LATER:
+      ResumeS.bESOFcnt = 2;
+      ResumeS.eState = RESUME_WAIT;
+      break;
+    case RESUME_WAIT:
+      ResumeS.bESOFcnt--;
+      if (ResumeS.bESOFcnt == 0)
+        ResumeS.eState = RESUME_START;
+      break;
+    case RESUME_START:
+     #ifdef STM32F10X_CL
+      OTGD_FS_SetRemoteWakeup();
+     #else 
+      wCNTR = _GetCNTR();
+      wCNTR |= CNTR_RESUME;
+      _SetCNTR(wCNTR);
+     #endif /* STM32F10X_CL */
+      ResumeS.eState = RESUME_ON;
+      ResumeS.bESOFcnt = 10;
+      break;
+    case RESUME_ON:
+    #ifndef STM32F10X_CL      
+      ResumeS.bESOFcnt--;
+      if (ResumeS.bESOFcnt == 0)
+      {
+     #endif /* STM32F10X_CL */    
+       #ifdef STM32F10X_CL
+        OTGD_FS_ResetRemoteWakeup();
+       #else
+        wCNTR = _GetCNTR();
+        wCNTR &= (~CNTR_RESUME);
+        _SetCNTR(wCNTR);
+       #endif /* STM32F10X_CL */
+        ResumeS.eState = RESUME_OFF;
+     #ifndef STM32F10X_CL
+      }
+     #endif /* STM32F10X_CL */
+      break;
+    case RESUME_OFF:
+    case RESUME_ESOF:
+    default:
+      ResumeS.eState = RESUME_OFF;
+      break;
+  }
+}
+
+/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/