这两天在玩STM32L0,但是串口怎么调试都有问题。数据位选择8B,显示如下:) u+ |5 G8 J: m) {! J& J
8 ]! `' h/ p4 G S& ?) h' \( j0 Y" t/ G/ S+ [" G) C( [; T6 b
; [& S5 Y# r- f R0 Y5 l5 c" d
数据位选择7B时:
0 R! `& N o9 B- k
4 T( h' r: e k
2 f6 Q$ x4 I8 i8 S
1 [1 Z+ f6 z8 \& q而我的输出应该是:printf("123456\n");printf("testing\n");& D0 B/ b( ^1 e B7 i
下面时我的程序:
" B+ Y$ y# g2 h3 a. p: P3 S3 D9 G2 r0 b; O5 G Y* F2 A Q
- //时钟初始化! Q. L) s r! K |! H
- void SystemClockConfig( void )
* S6 h) |4 W A9 {/ ], V8 p - {% z/ S( R: |$ s. ^) F% `7 }/ c
- RCC_OscInitTypeDef RCC_OscInitStruct;4 W% @3 A& G# g& I" @
- RCC_ClkInitTypeDef RCC_ClkInitStruct;8 R m0 | v8 D0 Q) h+ n, R
- RCC_PeriphCLKInitTypeDef PeriphClkInit;
# M6 e8 O5 g n$ |7 o -
' Q: t; c" H; V4 i9 ] -
0 {6 i w$ c+ Z7 F/ t - __HAL_RCC_SYSCFG_CLK_ENABLE( );1 O" v0 i! J/ B4 J, y
- __HAL_RCC_PWR_CLK_ENABLE( );+ q& m0 I2 A( \8 \
7 @& i) w' T$ ^: C6 b( b; {4 R- __HAL_PWR_VOLTAGESCALING_CONFIG( PWR_REGULATOR_VOLTAGE_SCALE1 );
9 c- _# D% V, `5 C% Z) j* V1 y - // __HAL_RCC_LSEDRIVE_CONFIG(RCC_LSEDRIVE_LOW);
. h& H. q/ Z. V4 n' c' t - 6 ]- B# F1 @7 E9 ]$ ?2 s5 J
- RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI | RCC_OSCILLATORTYPE_LSE;//内部高速时钟8M 和 外部低速32.768K
' ` k5 z7 ?2 J/ ~ - RCC_OscInitStruct.HSIState = RCC_HSI_ON; {& V* X* b! Z2 O2 H! b
- RCC_OscInitStruct.LSEState = RCC_LSE_ON; 3 E4 ]- Y Z( V9 n0 w! p& ]
- RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;7 J# A" z; L- i# O: h
- RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;6 G) Y/ @2 s* K# d6 I! Q# ~3 y. @
- RCC_OscInitStruct.PLL.PLLMUL = RCC_PLLMUL_4;
( e( a2 T2 u G% ` - RCC_OscInitStruct.PLL.PLLDIV = RCC_PLLDIV_2;8 B6 P! u& I" @" _
- if( HAL_RCC_OscConfig( &RCC_OscInitStruct ) != HAL_OK )
% d* k# S$ R7 m* L+ i - {5 u8 c" X1 R$ W; a8 Q5 i. V# l
- assert_param( FAIL );
0 ~6 a# i ?, ~$ k& y7 m( a: ] - }! ^ M% v f/ D8 I
7 t |0 K/ [9 d5 l9 Z! F( j) z- RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
, K* c' c. s0 ` - |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
0 A% M4 L' P, p, u6 u - RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;: @1 I6 ]0 y& I* {: y
- RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
Y+ L, x4 d- z - RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;0 E$ t( f# x' D. e9 E3 o3 L3 x
- RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;1 o+ z( X% v- B6 N8 ~
- if( HAL_RCC_ClockConfig( &RCC_ClkInitStruct, FLASH_LATENCY_1 ) != HAL_OK )3 Z' j9 j( \. t2 |2 C
- { F; D6 Q5 v# w8 x! U
- assert_param( FAIL );3 p% G$ S! X% a j
- }. `. {, _* n" r( r; G: t8 e/ K
- / Z, q3 }/ U! d: a9 }2 T( i
- PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1 | RCC_PERIPHCLK_I2C1 | RCC_PERIPHCLK_RTC;9 K1 F$ J ?" Y; V* Y8 U
- PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
6 t3 e, F5 `; `+ }0 R: b - PeriphClkInit.I2c1ClockSelection = RCC_I2C1CLKSOURCE_PCLK1;4 u- O! r5 }9 j* J, E
- PeriphClkInit.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;: F1 \0 C0 `& I1 B5 I! ~ N
- if( HAL_RCCEx_PeriphCLKConfig( &PeriphClkInit ) != HAL_OK )
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* t2 ^8 l7 i4 M* b3 k% X - assert_param( FAIL );
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8 p; \* @* d! }0 P3 w5 g- HAL_SYSTICK_Config( HAL_RCC_GetHCLKFreq( ) / 1000 );$ d) B2 f: i. J7 W6 U# N, f. x5 q3 v
, ~# X5 c# i& ^' i7 C4 D* t3 F- HAL_SYSTICK_CLKSourceConfig( SYSTICK_CLKSOURCE_HCLK );9 \- e1 q+ e" m0 ^7 |
- # U( G& S+ R/ Y* _* h3 A
- // SysTick_IRQn interrupt configuration
" c/ I) q8 {; ]) @ - HAL_NVIC_SetPriority( SysTick_IRQn, 0, 0 );
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UART.C! z( Y9 \/ j( V8 x6 ~, b
- /******************************************************************************! m# E9 K0 I; E8 N& w3 F. n9 T
- * Copyright 2017-2030 DaPu Co.1 j; w; }$ [4 h7 w c$ N$ x3 k
- * FileName: uart_new.c ; V) w. n, ~" m1 R& F" g1 k$ D- K
- * Desc:# r# b2 F% J) ?+ [
- * 4 y7 w& U7 V0 {* I L( v; l+ N
- *
! }4 @! R, |: D. C - * Author: CGH
- t" [3 a5 Z+ [ [$ W z - * Date: 2017/10/12
) P9 O9 |( v& f [ - * Notes: ' n7 b7 a2 ?, v, P& _5 t
- *
: i) i+ B& B+ g1 D7 Z+ r - * -----------------------------------------------------------------
! k2 M% G$ a% ?* R; I+ @ - * Histroy: v1.0 2017/10/12, CGH create this file
3 Z3 U/ A: `5 X% h A, { - * 4 \7 p' F# Q5 s9 H
- ******************************************************************************/
+ ~9 D/ x, Z9 N8 B4 o1 y6 G# G - /*------------------------------- Includes ----------------------------------*/
1 a5 S# b. ^& y' q4 J8 k# R - #include "board.h"* G) {. v2 |& u+ f' C
- #include "uart_new.h"
$ q9 Z% N& b' d- W& m; x - #include "gpio.h") |- w/ S, `# ^7 n) i
- #include "delay.h") q" C4 u- W0 O2 x' W" t' C! t
- /*------------------- Global Definitions and Declarations -------------------*/" ^# u. Z' F( B
- /*------------------------ Constant / Macro Definitions ---------------------*/9 ]+ h: t* U* o) Q
- /*------------------------- Type Declarations -------------------------------*/
, t2 |6 \% p* C - /*------------------------- Function Prototype ------------------------------*/7 n2 P1 v1 M3 d
- /*------------------------- Variable Declarations ---------------------------*/
3 @1 w, v7 g5 {( W7 ] - UART_HandleTypeDef husart_debug;
* \; w% ^- L8 B _5 i: u- _ - uint8_t RxDatabuf;
- v( j$ a' Q, @8 [ - /*------------------------- Function Implement ------------------------------*/
# q8 ~5 O8 w6 \# V7 O - /**
; l% [/ l3 I7 b1 q/ D, Y; ? - * 函数功能: 串口硬件初始化配置
, T. D5 ?9 f! Z3 b* M' |5 T6 F - * 输入参数: huart:串口句柄类型指针
( f M& P& }9 \* x- M7 I3 V - * 返 回 值: 无5 i( b y, W/ a5 H1 ]
- * 说 明: 该函数被HAL库内部调用% X4 K. D& [$ F p, P
- */
- ]3 r% D" q: ]3 _ - void HAL_UART_MspInit(UART_HandleTypeDef* huart)1 J0 _4 E* \( |
- {
& A# U9 v* O& H
+ j" Y3 W/ H0 E% _" K- GPIO_InitTypeDef GPIO_InitStruct;) ?# F5 \$ T4 M q" ~
- Gpio_t TX,RX;" x( y5 ^) o) D0 p& V6 K7 u
- 4 F1 z& y0 b' q4 ^# ]2 B/ r
- if(huart->Instance==DEBUG_USARTx)
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- /* 串口外设时钟使能 */
& a1 T8 B! x1 J- ]: O- Y( w( { - DEBUG_USART_RCC_CLK_ENABLE();$ h9 x5 K/ u V% ~/ N3 S
2 ~4 b3 `5 ~. I' {$ e- DEBUG_USARTx_GPIO_ClK_ENABLE();
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- /* 串口外设功能GPIO配置 */
- h: t- e( N# M - //GpioInit( &TX, UART_TX, PIN_ALTERNATE_FCT, PIN_PUSH_PULL, PIN_PULL_UP, GPIO_AF4_USART1 );( g; U8 |5 n) z/ G8 U3 `. m: ^
- //GpioInit( &RX, UART_RX, PIN_INPUT, PIN_PUSH_PULL, PIN_PULL_UP, GPIO_AF4_USART1 ); : ^6 Q! V+ Q1 w
- $ F( i7 j. Q. a* P
- GPIO_InitStruct.Pin = DEBUG_USARTx_Tx_GPIO_PIN;1 S# n: \8 K" O# b
- GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;8 T9 I) s0 t Q' w/ L0 `/ e y
- GPIO_InitStruct.Pull = GPIO_AF4_USART1;
" K, x* h& L( U! H: a9 N - GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
. p. v3 A: S! s' M0 y9 F- c$ c/ _/ h - GPIO_InitStruct.Alternate = GPIO_AF4_USART1;
% s S( ~ f7 s- K, F& u6 o( y' x - HAL_GPIO_Init(DEBUG_USARTx_Tx_GPIO, &GPIO_InitStruct);5 E/ p9 @4 v0 v J
3 {" y' g* b2 H P1 a+ s; u- GPIO_InitStruct.Pin = DEBUG_USARTx_Rx_GPIO_PIN;! p8 J; k& ?9 k
- GPIO_InitStruct.Mode = GPIO_MODE_INPUT;* t/ g* D; i/ X8 v# _2 q2 b* M
- //GPIO_InitStruct.Pull = GPIO_NOPULL;
/ ~% m# y' e& v - GPIO_InitStruct.Alternate = GPIO_AF4_USART1;
6 x$ L& }/ D% p, l! x* l - HAL_GPIO_Init(DEBUG_USARTx_Rx_GPIO, &GPIO_InitStruct);& B3 k/ |( E9 O7 v$ ~
4 n: \4 X1 j; s0 j- GpioWrite(&Led2,1);3 _( K% l- G5 i+ g, J
- Delay(3);
6 k5 `$ A, `; k! N" L - }
1 I/ y# r# D5 t: Q" ]" |7 U+ _- p - }
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- /**
( ], n0 o& E+ r: b8 a - * 函数功能: 串口硬件反初始化配置" z1 R2 e# B! _' I0 d/ S0 V
- * 输入参数: huart:串口句柄类型指针7 o" d0 j, l4 y" w7 [
- * 返 回 值: 无$ b: {" R& b, K6 c6 n
- * 说 明: 该函数被HAL库内部调用- u+ u7 n% c/ F3 e2 C
- */
- d0 Y6 B! ?8 S; V; j2 T - void HAL_UART_MspDeInit(UART_HandleTypeDef* huart)* Q4 A! T* t7 N% L$ J+ Q" J
- {
" {& H7 q) \2 p, w- Y2 l - if(huart->Instance==DEBUG_USARTx)# a& |( \6 [4 G
- {$ v6 G: v( Z- Y7 f( g" F* X
- /* 串口外设时钟禁用 */1 }# J# q2 t& U' ]/ x4 @4 C
- DEBUG_USART_RCC_CLK_DISABLE();
) A8 z$ m5 s# J. w# x& o4 { - ) o7 C, Z7 P0 A! d# G
- /* 串口外设功能GPIO配置 */
! s9 [6 r! c; e6 B! ^& a! l& \ - HAL_GPIO_DeInit(DEBUG_USARTx_Tx_GPIO, DEBUG_USARTx_Tx_GPIO_PIN);
& I4 C! [8 z) p3 c" ] - HAL_GPIO_DeInit(DEBUG_USARTx_Rx_GPIO, DEBUG_USARTx_Rx_GPIO_PIN);8 @; @. t3 [! o. a% V( ~7 |2 C
( K' ^% @9 @ t; X1 U. N- /* 串口中断禁用 */0 w8 @9 j" }) }
- HAL_NVIC_DisableIRQ(DEBUG_USART_IRQn);
* Z, E2 M% {" R0 B - }% N! `0 e- @9 D8 I: x* {- T0 @5 ~
- }' V5 U1 t# @1 N( Z1 W. _% b6 q
- 8 n/ z! c; {3 }3 b8 J
- /**% a7 s, K0 s) Q! f
- * 函数功能: 串口参数配置.2 b/ u! e3 R+ A# S
- * 输入参数: 无# P9 n8 W( n! p' _- f' }& d5 r2 @
- * 返 回 值: 无
5 j# c5 p, S. a. U - * 说 明:无+ u) Y. T4 a/ B4 z0 i3 O2 o% w
- */; c! Y! a, _7 P5 v/ Q
- void MX_DEBUG_USART_Init(void)
' t7 _9 Q7 |' q( G( O* w5 h - {
) d9 a+ I, o8 m, x8 f7 g - int ret = -1;
6 w# l( Y4 Z* v
* E0 ]% [) p$ ?2 J" k- __HAL_RCC_USART1_FORCE_RESET( );- i' f% ~2 |2 {$ m
- __HAL_RCC_USART1_RELEASE_RESET( );! t' h/ A# m [3 v- P
- __HAL_RCC_USART1_CLK_ENABLE( );. `2 b# @6 w% V& i! g- Z/ p
- /* 使能串口功能引脚GPIO时钟 */
9 q& ]" u- P) \$ y0 Q& S - DEBUG_USARTx_GPIO_ClK_ENABLE();) i% v f% ]- R
9 E' ]' E1 a+ N2 j% Q, i- husart_debug.Instance = DEBUG_USARTx;
& r/ n+ { Q* g9 M' i$ d - husart_debug.Init.BaudRate = DEBUG_USARTx_BAUDRATE;. \7 p9 C0 G3 m6 G% o) m
- husart_debug.Init.WordLength = UART_WORDLENGTH_8B;
! r; {6 z5 f% z. C+ q - husart_debug.Init.StopBits = UART_STOPBITS_1;
$ X! A8 p/ h8 v9 H: r4 Q3 H - husart_debug.Init.Parity = UART_PARITY_NONE;
; F- A$ g, n9 ]' ?+ Z0 _ - husart_debug.Init.Mode = UART_MODE_TX_RX;
' R* r% U# w P' P0 G - husart_debug.Init.HwFlowCtl = UART_HWCONTROL_NONE;
, M+ d, |5 u* L- ^8 q - husart_debug.Init.OverSampling = UART_OVERSAMPLING_16;
" |8 {/ q+ s6 O4 J3 f# } - ret = HAL_UART_Init(&husart_debug);
6 l7 H+ C; E H: P( X - if(ret != HAL_OK)
6 C- b" X& d. l+ v) V: E - {
5 w2 {" y, |) @ - GpioWrite(&Led2,0);
5 ^/ t, ~$ C s3 V0 B - }
' x- \+ o$ y1 s8 z! I( }: A) F - else
! g" Q; ~1 ?6 a- r6 D/ g$ M - {& y+ ~& P# N# h- X
- GpioWrite(&Led3,1);
6 A2 E) ~. U2 }. q - }
3 N$ f: P" j& ^! C" Z0 [: W% Z& |0 Q - /* 串口中断起用 */
5 m6 \( W* v/ } - 8 F7 a+ y" t# \5 r" W
- HAL_NVIC_SetPriority( USART1_IRQn, 1, 0 );2 R5 i, G6 o% ?# Z, Q. P6 n3 w
- HAL_NVIC_EnableIRQ( USART1_IRQn );
( X# p; }5 Y" m: R9 t - 2 @4 c, j0 s$ ]8 N3 I9 y9 u `
- /* Enable the UART Data Register not empty Interrupt */, z; ]$ @! i! H* m
- HAL_UART_Receive_IT( &husart_debug, &RxDatabuf, 1 );
1 u5 i+ x! }1 ]; d/ k - }
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UART.H- ?* @9 Z% h, r+ X% m" o$ Y* _4 M/ G
- /******************************************************************************( i1 M9 H/ z) ^: U0 T! Q' i! M3 q
- * Copyright 2017-2030 DaPu Co.+ R2 Z+ `& L5 D2 s$ B) n% g/ P
- * FileName: uart_new.h 7 b1 u3 v8 ]& m
- * Desc:
a$ C# ^5 @% c9 i4 F! \ - *
, M/ p9 v* k4 t$ `" ?. g+ k. i1 L - * 7 Q. Z% c4 O6 H( D2 M& ?! b; \4 M
- * Author: CGH
1 ~4 R7 }5 O; y) m9 G4 L - * Date: 2017/10/125 a5 P# f9 }, i) e' B; h- Y
- * Notes:
8 V5 P( a1 W6 U2 {# Q - *
% V9 S1 z; ~- j& Z% w - * -----------------------------------------------------------------* e9 [/ t( C, t; J
- * Histroy: v1.0 2017/10/12, CGH create this file
, X+ w+ v2 U' W7 t. I, v7 w0 m" e - *
7 G. u# B# U( f! r. h) e - ******************************************************************************/- H$ C+ e2 ?8 J3 ^
- #ifndef UART_NEW_H( J3 b/ T2 Y3 O
- #define UART_NEW_H4 C+ K6 I8 C2 [& T* V
- /*------------------------------- Includes ----------------------------------*/
8 Z% w. s8 A6 i4 B9 _' d - #include "stm32l0xx_hal.h"
0 V8 j/ N% t; f x' E - #include <stdio.h>
3 A" s. n0 ]7 X0 n - / `# J; @4 o8 v( G! f
- /*----------------------------- Global Defines ------------------------------*/
* j0 M, K" y+ {2 H& M* @* @( D; F - #define DEBUG_USARTx USART1$ J/ ~7 s- z1 E6 c W7 z
- #define DEBUG_USARTx_BAUDRATE 9600
4 F& q/ o' T2 L/ D2 n - #define DEBUG_USART_RCC_CLK_ENABLE() __HAL_RCC_USART1_FORCE_RESET();\\
( ^9 u* R# A# ?3 ~; L - __HAL_RCC_USART1_RELEASE_RESET();\\
- ^9 S) j1 W* ` - __HAL_RCC_USART1_CLK_ENABLE()% c: ]* s3 u; F' m
- #define DEBUG_USART_RCC_CLK_DISABLE() __HAL_RCC_USART1_CLK_DISABLE()
7 r4 J* c( L" m, f. [
; L; A+ ?4 D0 O. Q! f9 e4 S- #define DEBUG_USARTx_GPIO_ClK_ENABLE() __HAL_RCC_GPIOA_CLK_ENABLE()
# }& D$ ^3 d* e( u" }" d. B8 ^ - #define DEBUG_USARTx_Tx_GPIO_PIN GPIO_PIN_9
. n) x% K( u# c! W; a% I- p - #define DEBUG_USARTx_Tx_GPIO GPIOA
/ P d8 d% b6 U- t - #define DEBUG_USARTx_Rx_GPIO_PIN GPIO_PIN_10
6 q$ `; ^$ ~% F& P( M - #define DEBUG_USARTx_Rx_GPIO GPIOA2 y' S4 |( f' O" q! H$ Q% W
- ) `' ?, H: N* X% ^
- #define DEBUG_USART_IRQn USART1_IRQn" E4 C/ k5 A1 _8 }8 g! X" y# j
$ s" ]8 G6 R2 g& M4 d# q. n- /*----------------------------- Global Typedefs -----------------------------*/& [4 U ]: T3 L7 `. o
- /*----------------------------- External Variables --------------------------*/
( m! V! a J Y" C# m - extern UART_HandleTypeDef husart_debug;& V$ d% M( l: ?9 H
$ R, L' Z: c/ ]) @) {3 y+ n- /*------------------------ Global Function Prototypes -----------------------*/
( e3 m" b4 y" n$ F9 W - extern void MX_DEBUG_USART_Init(void);
, f- ^$ |2 e3 |9 a J) H - * |$ d3 @* m `* P% j( O3 u
* Y5 H' g) ~( H* Y( d- #endif
. a, k0 I6 K; D
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