mirror of
https://bitbucket.org/librepilot/librepilot.git
synced 2024-12-12 20:08:48 +01:00
134 lines
3.5 KiB
C
134 lines
3.5 KiB
C
/*!
|
|
* @File iap.c
|
|
* @Brief
|
|
*
|
|
* Created on: Sep 6, 2010
|
|
* Author: joe
|
|
*/
|
|
|
|
|
|
/****************************************************************************************
|
|
* Header files
|
|
****************************************************************************************/
|
|
#include <pios.h>
|
|
|
|
/****************************************************************************************
|
|
* Private Definitions/Macros
|
|
****************************************************************************************/
|
|
|
|
/* these definitions reside here for protection and privacy. */
|
|
#define IAP_MAGIC_WORD_1 0x1122
|
|
#define IAP_MAGIC_WORD_2 0xAA55
|
|
|
|
#define IAP_REQLOC_1 BKP_DR1
|
|
#define IAP_CRCLOC_LOW BKP_DR2
|
|
#define IAP_CRCLOC_UPPER BKP_DR3
|
|
#define IAP_PORTLOC BKP_DR4
|
|
#define IAP_REQLOC_2 BKP_RR5
|
|
|
|
#define IAP_UPLOAD_REQ_1 0x20AA
|
|
#define IAP_UPLOAD_REQ_2 0x2055
|
|
#define IAP_DNLOAD_REQ_1 0x30AA
|
|
#define IAP_DNLOAD_REQ_2 0x3055
|
|
|
|
#define UPPERWORD16(lw) (uint16_t)((uint32_t)(lw)>>16)
|
|
#define LOWERWORD16(lw) (uint16_t)((uint32_t)(lw)&0x0000ffff)
|
|
#define UPPERBYTE(w) (uint8_t)((w)>>8)
|
|
#define LOWERBYTE(w) (uint8_t)((w)&0x00ff)
|
|
|
|
/****************************************************************************************
|
|
* Private Functions
|
|
****************************************************************************************/
|
|
|
|
/****************************************************************************************
|
|
* Private (static) Data
|
|
****************************************************************************************/
|
|
|
|
/****************************************************************************************
|
|
* Public/Global Data
|
|
****************************************************************************************/
|
|
|
|
/*!
|
|
* \brief PIOS_IAP_Init - performs required initializations for iap module.
|
|
* \param none.
|
|
* \return none.
|
|
* \retval none.
|
|
*
|
|
* Created: Sep 8, 2010 10:10:48 PM by joe
|
|
*/
|
|
void PIOS_IAP_Init( void )
|
|
{
|
|
#if 0
|
|
/* Enable CRC clock */
|
|
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_CRC, ENABLE);
|
|
|
|
/* Enable PWR and BKP clock */
|
|
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
|
|
|
|
/* Enable write access to Backup domain */
|
|
PWR_BackupAccessCmd(ENABLE);
|
|
|
|
/* Clear Tamper pin Event(TE) pending flag */
|
|
BKP_ClearFlag();
|
|
#endif
|
|
}
|
|
|
|
/*!
|
|
* \brief Determines if an In-Application-Programming request has been made.
|
|
* \param *comm - Which communication stream to use for the IAP (USB, Telemetry, I2C, SPI, etc)
|
|
* \return TRUE - if correct sequence found, along with 'comm' updated.
|
|
* FALSE - Note that 'comm' will have an invalid comm identifier.
|
|
* \retval
|
|
*
|
|
*/
|
|
uint32_t PIOS_IAP_CheckRequest( void )
|
|
{
|
|
#if 0
|
|
uint32_t retval = FALSE;
|
|
uint16_t reg1;
|
|
uint16_t reg2;
|
|
|
|
reg1 = BKP_ReadBackupRegister( MAGIC_REG_1 );
|
|
reg2 = BKP_ReadBackupRegister( MAGIC_REG_2 );
|
|
|
|
if( reg1 == IAP_MAGIC_WORD_1 && reg2 == IAP_MAGIC_WORD_2 ) {
|
|
// We have a match.
|
|
retval = TRUE;
|
|
} else {
|
|
retval = FALSE;
|
|
}
|
|
return retval;
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
/*!
|
|
* \brief Sets the 1st word of the request sequence.
|
|
* \param n/a
|
|
* \return n/a
|
|
* \retval
|
|
*/
|
|
void PIOS_IAP_SetRequest1(void)
|
|
{
|
|
#if 0
|
|
BKP_WriteBackupRegister( MAGIC_REG_1, IAP_MAGIC_WORD_1);
|
|
#endif
|
|
}
|
|
|
|
void PIOS_IAP_SetRequest2(void)
|
|
{
|
|
#if 0
|
|
BKP_WriteBackupRegister( MAGIC_REG_2, IAP_MAGIC_WORD_2);
|
|
#endif
|
|
}
|
|
|
|
void PIOS_IAP_ClearRequest(void)
|
|
{
|
|
#if 0
|
|
BKP_WriteBackupRegister( MAGIC_REG_1, 0);
|
|
BKP_WriteBackupRegister( MAGIC_REG_2, 0);
|
|
#endif
|
|
}
|