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AN4228 датащи(PDF) 62 Page - STMicroelectronics

номер детали AN4228
подробное описание детали  Migrating from STM32F1 to STM32F3 microcontrollers
PDF  90 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4228 датащи(HTML) 62 Page - STMicroelectronics

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Firmware migration using the library
AN4228
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DocID024110 Rev 5
BKP_WriteBackupRegister(BKP_DR1, 0x3210);
/* Read data from Backup data register 1 */
BKPdata = BKP_ReadBackupRegister(BKP_DR1);
In STM32F3 series, you have to update this code as follows:
uint16_t BKPdata = 0;
...
/* PWR Clock Enable */
_APB1PeriphClockCmd(_APB1Periph_PWR, ENABLE);
/* Enable write access to RTC domain */
PWR_RTCAccessCmd(ENABLE);
/* Write data to Backup data register 1 */
RTC_WriteBackupRegister(RTC_BKP_DR1, 0x3220);
/* Read data from Backup data register 1 */
BKPdata = RTC_ReadBackupRegister(RTC_BKP_DR1);
The main changes in the source code in STM32F3 series versus STM32F1 series are
described below:
There is no BKP peripheral
Write to/read from Backup data registers are performed through the RTC driver
Backup data registers naming changed from BKP_DRx to RTC_BKP_DRx, and
numbering starts from 0 instead of 1.
4.12
CEC application code
You can easily update your CEC application code by replacing STM32F10x functions by the
corresponding function of the STM32F3xx library.
The table below presents the CEC driver API correspondence between STM32F10x and
STM32F37x Libraries.



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