接上篇:STM32F0的LL库使用(四)) l1 @3 w5 V" H0 Q# U# h) V; j 6 a0 h, n6 [, \+ f$ g$ t% W9 o6 N* M ( H$ `- k& u4 a9 S2 o 题外话:首先感谢社区的U盘,虽然还没有到货。这些贴子只是给各位了解LL库的渠道,我只不过是整理了资料。二月做了手术,没能把LL库再写三个。三月四月还要准备复试,不管怎么样,肯定还是会把这个片上的外设什么的都写完。2 u& j6 W& E) P+ U' C 不能说这是教程,这几个帖子有点乱,那我们这次来搞低功耗模式 。 硬件:STM32F030F4P6核心板,STLINK-V2-1(即NUCLEO板载仿真器拆下来的) 软件:CubeMX(V2.4.0)+IAR(V8.20)+ i, O: {1 y, z, `2 o LL库版本V1.9.07 R- l3 ?; z0 e; ~3 z! t 既然是低功耗模式配置嘛,很简单: - d8 _( c/ _/ ^ ^6 q: I 不多说直接主程序: /* Infinite loop */ /* USER CODE BEGIN WHILE */, ]; D6 Y3 s& A8 B' x0 [ while (1) { /* USER CODE END WHILE */ 4 P9 v2 ^5 F! B* a /* USER CODE BEGIN 3 *// b9 M$ r8 k7 i- t! h LL_GPIO_TogglePin(LED_GPIO_Port, LED_Pin); LL_mDelay(100); } /* USER CODE END 3 */2 D/ }4 k9 u2 s- f2 N. k H$ a% ?, E$ D 进入低功耗模式灯就不闪。, \; n7 I" j' ^3 R" Z # J: j" ]7 b2 A2 z 重点是中断服务函数:, c, z% I; U. x6 }: k: R1 l void LL_EXTI_LINE_5_CallBack(void) P% Z! K7 C1 n% `9 y" T/ O { uint8_t Entry=0; uint16_t Count=0; LL_mDelay(10);+ o$ K) [$ V6 F5 ^+ D if(LL_GPIO_IsInputPinSet(GPIOA,LL_GPIO_PIN_5)==SET) {9 `2 g. G/ ~; c7 C for(;Count<3000;Count++) {. f {% r+ f) j' J LL_mDelay(1);2 h0 K/ R9 h0 x. C9 A" Y# P if( (LL_GPIO_IsInputPinSet(GPIOA,LL_GPIO_PIN_5)!=SET)) {Entry=0;Count=0;}9 u- A9 C$ D7 e/ N' T- ?7 G } for(;Count<3000;Count++) ) L& s6 c/ K. @! N0 Z' H {0 @* m0 W( ]3 R LL_mDelay(1);- K) t& s1 j1 b! E$ b! S if( (LL_GPIO_IsInputPinSet(GPIOA,LL_GPIO_PIN_5)!=SET)) {Entry=1;Count=0;}; \4 s' \7 E( w0 g. E else {Entry=3;Count=0;} }5 n) j' O& |$ F) y5 R' O$ |' R$ C+ ? if(Entry==0) EnterStandbyMode(); if(Entry==1) EnterSTOP_LPREGUMode();3 S6 m. Y) M( t* S7 P( H( ` if(Entry==3) , ]8 j4 Y3 j8 |$ U4 p {$ j% i) Z' x$ l# G5 f for(;Count<5;Count++) * L- Q8 t" {, q4 i* L { LL_GPIO_TogglePin(LED_GPIO_Port, LED_Pin); $ P9 j! _2 ^6 X M LL_mDelay(50);, u8 t- i+ e5 P4 j } b( ]& ~& E& V, H% I: x }* N1 A7 x& P2 {+ B7 i( v } & k) H5 [0 @0 K1 r" L& U }3 D: w, s( u5 v4 c# Z ' S0 K( h" T& _: F# l! {& s 可以参考我前面的那个GPIO中断。 然后是进入低功耗模式函数(节选自官方例程),HAL库更简单。其实我个人感觉这段完全可以用HAL库代替了。不知道各位大神对此有什么看法? void EnterStandbyMode(void);( }% e7 A# z: {/ u5 X void EnterSTOP_LPREGUMode(void); void EnterStandbyMode(void) { /* Disable all used wakeup sources */7 |/ G Y& {4 B; B$ i# c5 |4 n+ m LL_PWR_DisableWakeUpPin(LL_PWR_WAKEUP_PIN1); /* Clear all wake up Flag */) r* s* h' e7 M1 z$ n- m LL_PWR_ClearFlag_WU();2 K5 J- j& j" l Z6 Z /* Enable wakeup pin */ LL_PWR_EnableWakeUpPin(LL_PWR_WAKEUP_PIN1);% i" o& n/ U6 y# C* l0 t /** Request to enter STANDBY mode * Following procedure describe in STM32F0xx Reference Manual * See PWR part, section Low-power modes, Standby mode6 i' E# ?. S! e) | */+ E( E* j( B7 w" q8 r3 |* P /* Set STANDBY mode when CPU enters deepsleep */ LL_PWR_SetPowerMode(LL_PWR_MODE_STANDBY); /* Set SLEEPDEEP bit of Cortex System Control Register */2 U# ?1 a) Q% f8 B' [ LL_LPM_EnableDeepSleep(); /* Request Wait For Interrupt */4 ~3 X/ _7 D( d, l! x __WFI(); }' G# ^2 `6 r' W% Z/ a+ L" a% R 2 d; {4 p8 [; f void EnterSTOP_LPREGUMode(void) {; B% L/ K: d% ?2 O2 f: X, K //所有的GPIO设置为analog模式,减小电流消耗% k( J# ^# y4 W, k5 f. E" u+ F LL_GPIO_InitTypeDef gpio_initstruct = {LL_GPIO_PIN_ALL, 7 D, Q: m! ^6 i" y# }' @ v4 A LL_GPIO_MODE_ANALOG, LL_GPIO_SPEED_FREQ_HIGH, ' [% B# K7 h3 j- f) \ LL_GPIO_OUTPUT_PUSHPULL, LL_GPIO_PULL_NO, LL_GPIO_AF_0}; LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOA ( L7 k0 H# l+ v$ X. |0 T5 w1 g |LL_AHB1_GRP1_PERIPH_GPIOB |LL_AHB1_GRP1_PERIPH_GPIOF);% B, A# \8 V3 V% A/ g# a + T8 n. d5 b3 E' |$ o5 S LL_GPIO_Init(GPIOA, &gpio_initstruct);6 v ?( ]2 k7 n4 [2 p, | LL_GPIO_Init(GPIOB, &gpio_initstruct);' {; V) f8 k q. ?1 b' z% z, c: b LL_GPIO_Init(GPIOF, &gpio_initstruct);0 [( Z/ ], D' u: s5 a5 P" f8 j$ @ LL_AHB1_GRP1_DisableClock(LL_AHB1_GRP1_PERIPH_GPIOA |LL_AHB1_GRP1_PERIPH_GPIOB , ^) I2 u+ m% Y* d6 \; i6 c ~ |LL_AHB1_GRP1_PERIPH_GPIOF); 9 v3 {; e5 z" ]& b% G( t /** Request to enter STOP_LPREGU mode) P' Z3 A2 w M- [) P1 C * Following procedure describe in STM32F0xx Reference Manual * See PWR part, section Low-power modes, STOP_LPREGU mode */ /* Set STOP_LPREGU mode when CPU enters deepsleep */0 i l) O' x, y5 P8 A LL_PWR_SetPowerMode(LL_PWR_MODE_STOP_LPREGU); /* Set SLEEPDEEP bit of Cortex System Control Register */4 c9 i3 T0 d( ^1 D6 I LL_LPM_EnableDeepSleep(); / Q' D* D+ k- V$ F$ @) H2 h- s3 X /* Request Wait For Interrupt */. p5 P1 B6 V9 @2 f0 i3 ? __WFI();2 f D' ~8 b2 G* w }5 }7 L' O+ }6 w3 p- b * h' P6 Z. k2 u* b6 m 可以开始弄个按键接上去然后观察了,俩按键,一个接GPIO中断,一个SYS_WKUP。观察现象,有错就在仔细查查,我这边没问题。* |. E) n- [1 X6 v & X: E/ v8 U4 N* j) v9 l |
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U盘今天会寄的,记得用之前帖子中的方法查快递啊~, d( q8 M$ y V. O# \8 w% {: A" ]
再次感谢啊
你们才是大佬啊
谢谢!
https://www.stmcu.org.cn/module/forum/thread-615031-1-1.html
要准备复试了,下个月发SPI,I2C