说实话,我不喜欢hall库,也许很多人用起来很顺手,但是我用起来不习惯,而且LL库效率明显高得多,也许是没有接触过上层代码的原因吧,那么我就来说一下LL库的环境搭建以及点灯。
# ^0 _1 h5 i7 ?. G3 Q8 n 我们首先根据官方的LL库以及例程做更改,新建文件夹,拷贝文件,具体如下图。
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4 k* G) G3 q& d 并将文件拷贝到个个文件夹内,方便将文件归类以及后期文件管理,具体的可以看附件里,附件内的源码。具体的可以查看keil工程下的文件,如下图
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文件拷贝完成之后,然后添加文件路径和初始化定义,然后增加如下代码到Main.c文件。
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8 U4 {1 C9 W" N2 v% B- #include "stm32u5xx_ll_icache.h"
: t7 B5 B: v, U# N7 |# a9 R - #include "stm32u5xx_ll_pwr.h"
6 x$ S0 c" j( m. L+ ?$ Y - #include "stm32u5xx_ll_crs.h"
4 _; Y3 o6 ~& |5 h- E - #include "stm32u5xx_ll_rcc.h"
9 B# p0 \$ a2 g - #include "stm32u5xx_ll_bus.h"
: f1 A: N4 }5 D* t3 |/ V - #include "stm32u5xx_ll_system.h"# E6 X% _* B/ b1 {0 N6 q# Z
- #include "stm32u5xx_ll_exti.h"8 _0 [/ V4 {; H0 p
- #include "stm32u5xx_ll_cortex.h"
2 h7 v# J; G2 F2 u% }, O - #include "stm32u5xx_ll_utils.h"( a5 t9 D! b& Z8 y% z& \
- #include "stm32u5xx_ll_dma.h"
( o) Q" t2 R% Y# m - #include "stm32u5xx_ll_gpio.h"
, n3 V: E% x& y8 N2 } - #include "stm32u5xx_ll_lpgpio.h"
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$ {3 d' ]! a1 I% B: ?& \4 A- #define LED1_Pin LL_GPIO_PIN_7
! E; U& b6 a# @$ P7 O: E( ~ - #define LED1_GPIO_Port GPIOC
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- % n4 J I9 @9 R' @/ m9 d+ c
3 ~7 R5 J6 y' @7 v' v" G6 H* I6 @8 H- /**# l6 Q3 p9 Q7 @& \0 R8 r$ j! T
- * @brief Power Configuration, ~) `: e, [# v* \
- * @retval None
" g& X9 E6 L' R c/ _: S - */
" c! v2 r. i0 v* X. L- Y" J - static void SystemPower_Config(void) D! O. u- P) U6 [ R8 W6 I- n
- {
- {4 D0 [- `! Z - + ^7 K% `; q) `: l u
- /*0 u+ T& F: r, A/ ~+ y: h$ ]
- * Disable the internal Pull-Up in Dead Battery pins of UCPD peripheral
" U9 ~( P6 {9 O L" ^ - */
6 T6 k k9 i! ] - LL_PWR_DisableUCPDDeadBattery();6 q* M1 F, C. P) f
- : K7 {7 }) a ~+ G1 y1 W' s
- /*) G# L+ z1 s* r# b1 U
- * Switch to SMPS regulator instead of LDO
4 x0 x; {: U3 x: x: {$ b1 `/ _ - */* F3 _& N6 `6 x. k6 a6 ^% C
- LL_PWR_SetRegulatorSupply(LL_PWR_SMPS_SUPPLY);* B9 Q/ o4 v; S; G
- ' u5 t& a w" \
- while(LL_PWR_IsActiveFlag_REGULATOR()!=1)
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- /**
1 }+ Z% j) V3 h! r Y) M! I m6 ~ - * @brief ICACHE Initialization Function- \. y+ S* X5 u1 q% w. M, R
- * @param None
- [- D1 A* g5 F) }( g( m8 b- S - * @retval None5 W9 h3 @) A+ j& x- [# u: f
- */
: A1 h1 t; R' Y: B4 ]* V- N - static void MX_ICACHE_Init(void)
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; Q" m8 M, n" Y% K, _- /** Enable instruction cache in 1-way (direct mapped cache)
% p5 X( s8 H" R+ i- H0 D - */! ~9 b+ ^% g) T7 F* e0 D: D1 Z
- LL_ICACHE_SetMode(LL_ICACHE_1WAY);+ E2 `$ z; V4 a, e7 |% P9 R
- LL_ICACHE_Enable();
. l8 ~# i5 M; N5 @ - /* USER CODE BEGIN ICACHE_Init 2 */' S+ W" X' g; ]+ {" |1 d6 @
, A- ?; g, _$ q5 A: {' }, G- /* USER CODE END ICACHE_Init 2 */; q9 D( I9 w* N- J7 m$ l- M/ l
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- J& F7 Z; x0 A1 g9 \& y9 f: x
- void SystemClock_Config(void)- c7 u, Z" T7 k, o1 L
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- LL_FLASH_SetLatency(LL_FLASH_LATENCY_4);
& M+ e* S, B% K( B4 `/ v' K - while(LL_FLASH_GetLatency()!= LL_FLASH_LATENCY_4)
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8 l$ D5 u. G* ~) Z# c- LL_PWR_SetRegulVoltageScaling(LL_PWR_REGU_VOLTAGE_SCALE1);
' d) g2 y- s! J& \ ? - LL_RCC_MSIS_Enable();7 q+ n1 A; u! r, w* Z4 T5 R
/ T5 p& o4 M) P. c5 x& e- /* Wait till MSIS is ready */, D+ X$ M) Q" U7 N# R$ F' n& t8 ~
- while(LL_RCC_MSIS_IsReady() != 1) H' f5 q, h0 {" Y# Z' {7 x
- {
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- LL_RCC_MSI_EnableRangeSelection();/ i7 `/ A, h8 ^& U2 G' G
- LL_RCC_MSIS_SetRange(LL_RCC_MSISRANGE_4);
) I2 p! u [( ` - LL_RCC_MSI_SetCalibTrimming(16, LL_RCC_MSI_OSCILLATOR_1);
8 g4 |8 q( I- s5 U, i, Q - LL_RCC_PLL1_ConfigDomain_SYS(LL_RCC_PLL1SOURCE_MSIS, 1, 80, 2);3 D9 g4 e* K& X3 ^1 _. y
- LL_RCC_PLL1_EnableDomain_SYS();* }( a2 T: n8 T" J
- LL_RCC_SetPll1EPodPrescaler(LL_RCC_PLL1MBOOST_DIV_1);
/ G2 w# r: F ~/ Y* z/ f - LL_RCC_PLL1_SetVCOInputRange(LL_RCC_PLLINPUTRANGE_4_8);
4 ~; X( _* ~2 Q - LL_RCC_PLL1_Enable();; A/ ], l( E/ |2 ?' m0 Z- [
- 1 I& a8 f9 B( u% d7 a5 y
- /* Wait till PLL is ready */6 L3 W( w6 T# ?+ ~9 b* r
- while(LL_RCC_PLL1_IsReady() != 1)1 I- e- j% v/ b u3 Z) q
- {
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" n5 M+ |4 J3 P8 C6 t2 n$ j& p+ U \- /* Intermediate AHB prescaler 2 when target frequency clock is higher than 80 MHz */
0 c- e M% V2 y/ Q! E - LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_2);
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- LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_PLL1);8 {6 i: o) {! g
5 V N0 g3 p0 z+ o0 B- /* Wait till System clock is ready */
3 h1 H5 |' C. `8 n( A, G) ?) m - while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL1)
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- + V5 e% D2 b3 U+ U
- /* Insure 1µs transition state at intermediate medium speed clock based on DWT*/6 S1 j: `* S2 ?$ h- ?
- CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk;2 {: b; ]% q7 X% D! i2 n
- ( x4 C2 J8 k H2 V3 j
- DWT->CTRL |= DWT_CTRL_CYCCNTENA_Msk;$ z: P5 {$ e1 y2 y0 X
- DWT->CYCCNT = 0;" A0 d1 k: {, O5 A
- while(DWT->CYCCNT < 100);
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3 D6 s& [; D: T+ x2 I- LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);3 B& ~! u2 a' G1 Q" n+ w# P
- LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);% h+ W2 P, n( X F* I& ~" o
- LL_RCC_SetAPB2Prescaler(LL_RCC_APB2_DIV_1);/ w/ {+ J' Q" r
- LL_RCC_SetAPB3Prescaler(LL_RCC_APB3_DIV_1);
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0 [, ~/ U; B$ i& i0 f: _/ `- LL_Init1msTick(160000000);/ \' _ l$ Y9 {8 S8 N4 \3 m6 b. z
- % @* @. S0 [) e
- LL_SetSystemCoreClock(160000000);; L7 M/ `3 {0 j( y
- }
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1 o( W4 r5 m$ `/ y/ W- /**( P O6 d$ Y& I+ G1 \3 O0 e
- * @brief GPIO Initialization Function& s; K( b, H' r4 x: U
- * @param None ^: f0 O0 C/ p& J
- * @retval None
( m- v6 m) E. o# e$ y - */1 T( ?( K) y1 q# V" @5 _
- static void MX_GPIO_Init(void)2 H0 s" V. c! F \/ |. ~
- {
1 K( N$ m3 W4 w3 f# K( o( C/ ]+ d. M - LL_GPIO_InitTypeDef GPIO_InitStruct = {0};
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- /* GPIO Ports Clock Enable */
+ e+ n: R3 t! n" B" F - LL_AHB2_GRP1_EnableClock(LL_AHB2_GRP1_PERIPH_GPIOC);9 F' j) N# O5 u- W% U& L7 B c
- ( F* @' h; A4 l4 N& V0 `5 o
- /**/
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, W8 N, v$ K! V+ e- /**/
/ Q0 W5 R0 ? `" ^9 Z - GPIO_InitStruct.Pin = LED1_Pin;3 T) f6 d9 b, @+ U. F
- GPIO_InitStruct.Mode = LL_GPIO_MODE_OUTPUT;' v/ L6 g$ |- i# n2 G, q( I7 c1 k
- GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW;
2 P; h- C* D |) J# ?" l4 f - GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;7 z" T' l, f( ^
- GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;) h, p& C- P; {0 ]
- LL_GPIO_Init(LED1_GPIO_Port, &GPIO_InitStruct);, W. h1 g/ o7 t$ F9 u
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" W( A6 `8 h$ v- : P" z! ]; }# e0 e5 e
- int main(void)
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- LL_AHB3_GRP1_EnableClock(LL_AHB3_GRP1_PERIPH_PWR);5 P' G4 t& _/ D( Q- C! {# W
- SystemClock_Config();% a1 l( S* |/ @1 x0 H8 _. ]. S
- SystemPower_Config();
" v% h) I0 Z1 O0 z - MX_GPIO_Init();
6 i# h6 e2 ?0 M6 y - MX_ICACHE_Init();- m8 ^5 x( S+ @5 M5 g' g- {
- while (1)
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- LL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin);. t8 s, N' ^6 j/ i, _/ B
- LL_mDelay(500);+ c/ f g& ^( i+ w
- }; b$ ]2 A9 t I- x# z- Q
- /* USER CODE END 3 */
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- * A3 j( w! f, m8 i3 m6 z; m( M
- #ifdef USE_FULL_ASSERT3 X* O, d! ]3 |
- /**# H- ?+ y8 _1 r0 {3 h) M. T
- * @brief Reports the name of the source file and the source line number; v' ^" Q: ?2 @1 H3 E
- * where the assert_param error has occurred.
! G0 o7 Z3 K# G - * @param file: pointer to the source file name
: t2 y* m! A: Q2 c" ?8 p0 k - * @param line: assert_param error line source number
5 L1 n6 I. ` D: a, \ - * @retval None
* T# f" K; }+ d# ?4 c; c - */
- u. w0 v' R, w% E; s* ^ - void assert_failed(uint8_t *file, uint32_t line): l7 k8 x0 M& e4 }& C3 r0 C. |( S
- {
$ N0 \2 ]" c3 s5 I6 j - /* USER CODE BEGIN 6 */
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7 D$ P9 u% g9 T4 M- /* User can add his own implementation to report the file name and line number,
* J1 r9 {+ D4 [/ H - ex: printf("Wrong parameters value: file %s on line %d", file, line) */
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+ e6 _% |! M _& i6 D9 J- }- /* Infinite loop */
$ n* I/ ~( g Q7 J - while (1)
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- }
; A, s T7 A; P+ O+ V# X- n - /* USER CODE END 6 */, [0 X3 K4 |' J4 d. R, Y' Y# n
- }1 n7 h% _" Q8 p: `. q0 s% p6 V; u
- #endif /* USE_FULL_ASSERT */, Z: G Y7 ^+ F9 A. O! l9 M0 i) d
复制代码在完成之后,编译,就可成功下载点灯,具体可查看附件。
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好了,先分享到这,过年后来了的第一篇。 7 Q7 {5 A1 r8 o4 u" M: l1 b
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期待下一篇