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openblt/Target/Demo/ARMCM3_STM32_Olimex_STM32H1.../Boot/hooks.c

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/****************************************************************************************
| Description: bootloader callback source file
| File Name: hooks.c
|
|----------------------------------------------------------------------------------------
| C O P Y R I G H T
|----------------------------------------------------------------------------------------
| Copyright (c) 2011 by Feaser http://www.feaser.com All rights reserved
|
|----------------------------------------------------------------------------------------
| L I C E N S E
|----------------------------------------------------------------------------------------
| This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
| modify it under the terms of the GNU General Public License as published by the Free
| Software Foundation, either version 3 of the License, or (at your option) any later
| version.
|
| OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
| without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
| PURPOSE. See the GNU General Public License for more details.
|
| You should have received a copy of the GNU General Public License along with OpenBLT.
| If not, see <http://www.gnu.org/licenses/>.
|
| A special exception to the GPL is included to allow you to distribute a combined work
| that includes OpenBLT without being obliged to provide the source code for any
| proprietary components. The exception text is included at the bottom of the license
| file <license.html>.
|
****************************************************************************************/
/****************************************************************************************
* Include files
****************************************************************************************/
#include "boot.h" /* bootloader generic header */
#include "stm32f10x.h" /* microcontroller registers */
/****************************************************************************************
* U S B C O M M U N I C A T I O N I N T E R F A C E H O O K F U N C T I O N S
****************************************************************************************/
#if (BOOT_COM_USB_ENABLE > 0)
/****************************************************************************************
** NAME: UsbConnect
** PARAMETER: connect BLT_TRUE to connect and BLT_FALSE to disconnected.
** RETURN VALUE: none
** DESCRIPTION: Callback that gets called whenever the USB device should be connected
** to the USB bus.
**
****************************************************************************************/
void UsbConnectHook(blt_bool connect)
{
static blt_bool initialized = BLT_FALSE;
/* the connection to the USB bus is typically controlled by software through a digital
* output. the GPIO pin for this must be configured as such.
*/
if (initialized == BLT_FALSE)
{
/* enable clock for PC11 pin peripheral (GPIOC) */
RCC->APB2ENR |= (blt_int32u)(0x00000010);
/* configure DIS (GPIOC11) as open drain digital output */
/* first reset the configuration */
GPIOC->CRH &= ~(blt_int32u)((blt_int32u)0xf << 12);
/* CNF11[1:0] = %01 and MODE11[1:0] = %11 */
GPIOC->CRH |= (blt_int32u)((blt_int32u)0x7 << 12);
/* set to initialized as this part only has to be done once after reset */
initialized = BLT_TRUE;
}
/* determine if the USB should be connected or disconnected */
if (connect == BLT_TRUE)
{
/* the GPIO has a pull-up so to connect to the USB bus the pin needs to go low */
GPIOC->BRR = (blt_int32u)((blt_int32u)0x1 << 11);
}
else
{
/* the GPIO has a pull-up so to disconnect to the USB bus the pin needs to go high */
GPIOC->BSRR = (blt_int32u)((blt_int32u)0x1 << 11);
}
} /*** end of UsbConnect ***/
/****************************************************************************************
** NAME: UsbEnterLowPowerMode
** PARAMETER: none
** RETURN VALUE: none
** DESCRIPTION: Callback that gets called whenever the USB host requests the device
** to enter a low power mode.
**
****************************************************************************************/
void UsbEnterLowPowerModeHook(void)
{
/* support to enter a low power mode can be implemented here */
} /*** end of UsbEnterLowPowerMode ***/
/****************************************************************************************
** NAME: UsbLeaveLowPowerMode
** PARAMETER: none
** RETURN VALUE: none
** DESCRIPTION: Callback that gets called whenever the USB host requests the device to
** exit low power mode.
**
****************************************************************************************/
void UsbLeaveLowPowerModeHook(void)
{
/* support to leave a low power mode can be implemented here */
} /*** end of UsbLeaveLowPowerMode ***/
#endif /* BOOT_COM_USB_ENABLE > 0 */
/****************************************************************************************
* B A C K D O O R E N T R Y H O O K F U N C T I O N S
****************************************************************************************/
#if (BOOT_BACKDOOR_HOOKS_ENABLE > 0)
/****************************************************************************************
** NAME: BackDoorInitHook
** PARAMETER: none
** RETURN VALUE: none
** DESCRIPTION: Initializes the backdoor entry option.
**
****************************************************************************************/
void BackDoorInitHook(void)
{
/* enable clock for PA0 pin peripheral (GPIOA) */
RCC->APB2ENR |= (blt_int32u)(0x00000004);
/* configure BUT (GPIOA0) as floating digital input */
/* first reset the configuration */
GPIOA->CRL &= ~(blt_int32u)((blt_int32u)0xf << 0);
/* CNF0[1:0] = %01 and MODE0[1:0] = %00 */
GPIOA->CRL |= (blt_int32u)((blt_int32u)0x4 << 0);
} /*** end of BackDoorInitHook ***/
/****************************************************************************************
** NAME: BackDoorEntryHook
** PARAMETER: none
** RETURN VALUE: BLT_TRUE if the backdoor entry is requested, BLT_FALSE otherwise.
** DESCRIPTION: Checks if a backdoor entry is requested.
**
****************************************************************************************/
blt_bool BackDoorEntryHook(void)
{
/* button PA0 has a pullup, so will read high by default. enter backdoor only when
* this button is pressed. this is the case when it reads low */
if ((GPIOA->IDR & ((blt_int32u)0x01)) == 0)
{
return BLT_TRUE;
}
return BLT_FALSE;
} /*** end of BackDoorEntryHook ***/
#endif /* BOOT_BACKDOOR_HOOKS_ENABLE > 0 */
/****************************************************************************************
* N O N - V O L A T I L E M E M O R Y D R I V E R H O O K F U N C T I O N S
****************************************************************************************/
#if (BOOT_NVM_HOOKS_ENABLE > 0)
/****************************************************************************************
** NAME: NvmInitHook
** PARAMETER: none
** RETURN VALUE: none
** DESCRIPTION: Callback that gets called at the start of the internal NVM driver
** initialization routine.
**
****************************************************************************************/
void NvmInitHook(void)
{
} /*** end of NvmInitHook ***/
/****************************************************************************************
** NAME: NvmWriteHook
** PARAMETER: addr start address
** len length in bytes
** data pointer to the data buffer.
** RETURN VALUE: BLT_NVM_OKAY if successful, BLT_NVM_NOT_IN_RANGE if the address is
** not within the supported memory range, or BLT_NVM_ERROR is the write
** operation failed.
** DESCRIPTION: Callback that gets called at the start of the NVM driver write
** routine. It allows additional memory to be operated on. If the address
** is not within the range of the additional memory, then
** BLT_NVM_NOT_IN_RANGE must be returned to indicate that the data hasn't
** been written yet.
**
**
****************************************************************************************/
blt_int8u NvmWriteHook(blt_addr addr, blt_int32u len, blt_int8u *data)
{
return BLT_NVM_NOT_IN_RANGE;
} /*** end of NvmWriteHook ***/
/****************************************************************************************
** NAME: NvmEraseHook
** PARAMETER: addr start address
** len length in bytes
** RETURN VALUE: BLT_NVM_OKAY if successful, BLT_NVM_NOT_IN_RANGE if the address is
** not within the supported memory range, or BLT_NVM_ERROR is the erase
** operation failed.
** DESCRIPTION: Callback that gets called at the start of the NVM driver erase
** routine. It allows additional memory to be operated on. If the address
** is not within the range of the additional memory, then
** BLT_NVM_NOT_IN_RANGE must be returned to indicate that the memory
** hasn't been erased yet.
**
****************************************************************************************/
blt_int8u NvmEraseHook(blt_addr addr, blt_int32u len)
{
return BLT_NVM_NOT_IN_RANGE;
} /*** end of NvmEraseHook ***/
/****************************************************************************************
** NAME: NvmDoneHook
** PARAMETER: none
** RETURN VALUE: BLT_TRUE is successful, BLT_FALSE otherwise.
** DESCRIPTION: Callback that gets called at the end of the NVM programming session.
**
****************************************************************************************/
blt_bool NvmDoneHook(void)
{
return BLT_TRUE;
} /*** end of NvmDoneHook ***/
#endif /* BOOT_NVM_HOOKS_ENABLE > 0 */
/****************************************************************************************
* W A T C H D O G D R I V E R H O O K F U N C T I O N S
****************************************************************************************/
#if (BOOT_COP_HOOKS_ENABLE > 0)
/****************************************************************************************
** NAME: CopInitHook
** PARAMETER: none
** RETURN VALUE: none
** DESCRIPTION: Callback that gets called at the end of the internal COP driver
** initialization routine. It can be used to configure and enable the
** watchdog.
**
****************************************************************************************/
void CopInitHook(void)
{
} /*** end of CopInitHook ***/
/****************************************************************************************
** NAME: CopServiceHook
** PARAMETER: none
** RETURN VALUE: none
** DESCRIPTION: Callback that gets called at the end of the internal COP driver
** service routine. This gets called upon initialization and during
** potential long lasting loops and routine. It can be used to service
** the watchdog to prevent a watchdog reset.
**
****************************************************************************************/
void CopServiceHook(void)
{
} /*** end of CopServiceHook ***/
#endif /* BOOT_COP_HOOKS_ENABLE > 0 */
/*********************************** end of hooks.c ************************************/
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