MM32W????MCU??в??????? ???? ?????BLE???????
??????????????????MM32W0???????????????????????????????????????????????????????????ú?????
??MM32W0?????n4??q1?????汾??n4???????????????????÷?????q1?????????????????÷??????????????????????????????????????MCU?????????????????ο???????????????????????????????????????弴?????????????????
???????
????????????????????????????????????????????????MM32W0?????????????????????????????????????????????stop??????????鶼?????IRQ????????????????ж???????????STOP???е??????顣
?????????У??????????????????????void McuGotoSleepAndWakeup(void) ??????????????ж???????????????????????????IrqMcuGotoSleepAndWakeup()??????????
void McuGotoSleepAndWakeup(void) // auto goto sleep AND wakeup, porting api
{
if ((SleepStop)&& //???????????
(TxTimeout < SysTick_Count)&&
(RxTimeout < SysTick_Count)) //UART?????????
{
if(SleepStop == 1){ //SLEEP
SCB->SCR &= 0xfb;
__WFE();
}else{ //STOP
SysClk48to8(); //HSI 6???
SCB->SCR |= 0x4;
__WFI(); //????STOP??
RCC->CR|=RCC_CR_HSION; //??STOP?????????????
SysClk8to48(); //PLL?????48MHz
}
}
}
void IrqMcuGotoSleepAndWakeup(void) // auto goto sleep AND wakeup, porting api
{
if(ble_run_interrupt_McuCanSleep() == 0) return;
#ifdef USE_UART
if ((SleepStop)&&
(TxTimeout < SysTick_Count)&&
(RxTimeout < SysTick_Count))
{
if(SleepStop == 1){ //sleep
SleepStatus = 1;
SCB->SCR &= 0xfb;
__WFE(); //???????????????
}else{ //stop
SleepStatus = 2;
SysClk8M();
SCB->SCR |= 0x4;
SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
__WFI();
}
}
#endif
}
???ж????У???????ж??????????????????????
void EXTI4_15_IRQHandler(void)
{
EXTI_ClearITPendingBit(EXTI_Line8);
if(2 == SleepStatus){ //stop
RCC->CR|=RCC_CR_HSION; //HSI???
RCC->CR |= RCC_CR_PLLON; //PLL???
RCC->CFGR |= (uint32_t)RCC_CFGR_SW_PLL;
SysTick_Config(48000);
}
SleepStatus = 0;
ble_run(0);
}
???????
???????????????????????????????????????????????HSI6??????????????????????
??????溯??????????????????????????????
???????????
void SysClk48to8(void)1
{
RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);//selecting PLL clock as sys clock
while (RCC_GetSYSCLKSource() != 0x0)
{}
RCC->CR &=~(RCC_CR_PLLON); //clear PLL
SysTick_Config(8000);
}
void SysClk8to48(void) //??STOP???л??
{
SetSysClock_HSI(4);//HSI:12*4=48M
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);//selecting PLL clock as sys clock
while (RCC_GetSYSCLKSource() != 0x08)
{}
SysTick_Config(48000);
}
void SetSysClock_HSI(u8 PLL) //????????HSI??PLL
{
unsigned char temp=0;
RCC->CR|=RCC_CR_HSION;
while(!(RCC->CR&RCC_CR_HSIRDY));
RCC->CFGR=RCC_CFGR_PPRE1_2; //APB1=DIV2;APB2=DIV1;AHB=DIV1;
RCC->CFGR&=~RCC_CFGR_PLLSRC; //PLLSRC ON
RCC->CR &=~(RCC_CR_PLLON);
RCC->CR &=~(0x1f<<26); //clear PLL
RCC->CR|=(PLL - 1) << 26; //setting PLL value 2~16
FLASH->ACR=FLASH_ACR_LATENCY_1|FLASH_ACR_PRFTBE; //FLASH 2 delay clk cycles
RCC->CR|=RCC_CR_PLLON; //PLLON
while(!(RCC->CR&RCC_CR_PLLRDY));//waiting for PLL locked
RCC->CFGR&=~RCC_CFGR_SW;
RCC->CFGR|=RCC_CFGR_SW_PLL;//PLL to be the sys clock
while(temp!=0x02) //waiting PLL become the sys clock
{
temp=RCC->CFGR>>2;
temp&=0x03;
}
}
?????????????????MM32W0??е?n4?汾????q1?治???????????????MM32W051PFB(q1)?????????????
??SleepStop???ó?0x02??MCU???????STOP????????? SRAM ??????????????????????????????????????????????????????HSI ???????? HSE ???????????????????????????ó? EXTI ????????????????λ????????????????????л????EXTI ???????? 16 ???? I/O ?????? PVD ????????????????STOP????????????????????????????????????????????????????????θ?λ????????????????????
????admin ?????????2019-06-15
