src/main/drivers/rcc.c

   1
   2 #include "platform.h"
   3 #include "rcc.h"
   4
   5 #define RCC_BIT_CMD(ptr, mask, state)       do { if (state != DISABLE) { ptr |= mask; } else { ptr &= ~mask; } } while(0)
   6
   7
   8 void RCC_ClockCmd(rccPeriphTag_t periphTag, FunctionalState NewState)
   9 {
  10     int tag = periphTag >> 5;
  11     uint32_t mask = 1 << (periphTag & 0x1f);
  12
  13     switch (tag) {
  14 #if defined(STM32F3)
  15     case RCC_AHB:
  16         RCC_BIT_CMD(RCC->AHBENR, mask, NewState);
  17         break;
  18 #endif
  19     case RCC_APB2:
  20         RCC_BIT_CMD(RCC->APB2ENR, mask, NewState);
  21         break;
  22     case RCC_APB1:
  23         RCC_BIT_CMD(RCC->APB1ENR, mask, NewState);
  24         break;
  25 #if defined(STM32F4) || defined(STM32F7)
  26     case RCC_AHB1:
  27         RCC_BIT_CMD(RCC->AHB1ENR, mask, NewState);
  28         break;
  29 #endif
  30     }
  31 }
  32
  33 void RCC_ResetCmd(rccPeriphTag_t periphTag, FunctionalState NewState)
  34 {
  35     int tag = periphTag >> 5;
  36     uint32_t mask = 1 << (periphTag & 0x1f);
  37
  38     switch (tag) {
  39 #if defined(STM32F3)
  40     case RCC_AHB:
  41         RCC_BIT_CMD(RCC->AHBRSTR, mask, NewState);
  42         break;
  43 #endif
  44     case RCC_APB2:
  45         RCC_BIT_CMD(RCC->APB2RSTR, mask, NewState);
  46         break;
  47     case RCC_APB1:
  48         RCC_BIT_CMD(RCC->APB1RSTR, mask, NewState);
  49         break;
  50 #if defined(STM32F4) || defined(STM32F7)
  51     case RCC_AHB1:
  52         RCC_BIT_CMD(RCC->AHB1RSTR, mask, NewState);
  53         break;
  54 #endif
  55     }
  56 }