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22 lines
451 B
22 lines
451 B
6 years ago
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#include "stm32f4xx.h"
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#include "bkp_sram.h"
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void bkp_sram_init(void)
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{
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_BKPSRAM, ENABLE);
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PWR_BackupAccessCmd(ENABLE);
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PWR_BackupRegulatorCmd(ENABLE);
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}
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void bkp_sram_write(int off, unsigned int value)
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{
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*(volatile uint32_t *) (BKPSRAM_BASE + off) = value;
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}
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unsigned int bkp_sram_read(int off)
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{
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return *(volatile uint32_t *) (BKPSRAM_BASE + off);
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}
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