【STM32N6570-DK评测】串口1printf输出测试

[复制链接]

TLLED 发布时间：2025-2-7 23:23

技术帖
文章封面:
文章简介:	串口1printf输出测试

测试串口usart1的printf输出。

一、硬件部分

1.1、电路图串口部分

板载仿真器上的虚拟串口连接到开发板的PE5和PE6引脚。

1.2、串口端口映射

二、程序部分

2.1、usart.c

#include "main.h"
& ~. t+ H- ^( d) P5 ?9 u
#include "usart/usart.h"+ z% ^: P% ` O4 f( R' [
: {2 y( I' P# F' e: x
UART_HandleTypeDef g_usart1_handle;
! ^1 d! S6 O. J1 H
2 W2 I: l( f8 M6 c
int fputc(int ch, FILE *f)
( N8 b: o( R! a! k
{5 I8 i9 _. W' @+ Q
while ((USART_UX->ISR & 0X40) == 0);
8 z2 Y4 H- B1 j" A( W
( K% x9 f% O1 @/ u5 a4 _
USART_UX->TDR = (uint8_t)ch;
! ]9 R* G4 I* s6 `/ Z
return ch;
* H( w5 K3 K! Z4 ?* z
}: ?+ b7 _% x( S
7 n8 @$ f; c& V0 A6 F
void usart_init(uint32_t baudrate)
G9 N$ p6 d3 U9 n: c3 Y
{0 T5 [: o' ^$ G& p
GPIO_InitTypeDef gpio_init_struct;
: J/ {, Q) a( j8 x7 v$ v
6 ?2 v. D Z& S/ R1 }6 I+ t
USART_UX_CLK_ENABLE();
9 p, k9 Q& m# ?+ h: R8 m0 E/ a( b
USART_TX_GPIO_CLK_ENABLE(); 3 ~# p/ y, z. V B \9 {6 ]
USART_RX_GPIO_CLK_ENABLE();
" Y( |7 Z: I! t% p+ w0 x
gpio_init_struct.Pin = USART_TX_GPIO_PIN;
% l. Z* S8 V! s. l
gpio_init_struct.Mode = GPIO_MODE_AF_PP;
% g8 \- \: I$ C* ^, E
gpio_init_struct.Pull = GPIO_PULLUP;
% M! A- d3 v" a& v
gpio_init_struct.Speed = GPIO_SPEED_FREQ_HIGH;
, n1 H$ \8 @& I8 z
gpio_init_struct.Alternate = USART_TX_GPIO_AF;
# Z% p9 X8 _1 x& l
HAL_GPIO_Init(USART_TX_GPIO_PORT, &gpio_init_struct); 4 \3 I o6 j; z2 z0 V0 L, z8 N
2 W% h1 C8 I( v' \( J
gpio_init_struct.Pin = USART_RX_GPIO_PIN;
1 f* X0 D! s2 m" {8 D: A
gpio_init_struct.Alternate = USART_RX_GPIO_AF; ) K Z/ B. Q4 I/ P$ b; r
HAL_GPIO_Init(USART_RX_GPIO_PORT, &gpio_init_struct); % q1 N9 U% s& l- T1 c6 r* q
' ]; S& \; E* G# J' j4 A+ |
g_usart1_handle.Instance = USART_UX; 5 c6 V5 }- H! a9 h
g_usart1_handle.Init.BaudRate = baudrate;
( d1 O& E$ B6 k& v! q3 h: v9 k1 H
g_usart1_handle.Init.WordLength = UART_WORDLENGTH_8B;
; w2 q1 g5 \ O' @9 s
g_usart1_handle.Init.StopBits = UART_STOPBITS_1;
+ P2 }# b5 z. `+ e7 Y# y2 j
g_usart1_handle.Init.Parity = UART_PARITY_NONE; 5 y# t5 X" Q& R, k9 B' k: S; W
g_usart1_handle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
: h2 s5 f( b1 @! F* U0 d
g_usart1_handle.Init.Mode = UART_MODE_TX_RX; ) q# w& e6 K+ f( s4 j
HAL_UART_Init(&g_usart1_handle);
* p- J; p/ g+ }. a N* R
: m/ N& T" U% Y6 b; T Y4 k
}

复制代码

2.2、usart.h

#ifndef _USART_H
' L7 x! {% q! N) o
#define _USART_H2 q+ C2 f3 e# c2 g! B& o! l- B
' Y) N3 m |9 S, ]2 M h
#include "stdio.h"
& Z( S" W' m5 M6 s) r; C; S
) k! i5 e" D+ x$ n! ]2 ~
#define USART_TX_GPIO_PORT GPIOE$ c6 q) {& p! Q6 d& M
#define USART_TX_GPIO_PIN GPIO_PIN_59 r% z* ~( }4 J/ i4 B
#define USART_TX_GPIO_AF GPIO_AF7_USART1' b- J+ U+ p* ^+ l
#define USART_TX_GPIO_CLK_ENABLE() do{ __HAL_RCC_GPIOE_CLK_ENABLE(); }while(0) 1 J( s) i z( i& I. ^3 N( ^, T
b3 B9 b" \* a/ d
#define USART_RX_GPIO_PORT GPIOE! [% T$ g1 o, s/ ? Y% T5 X
#define USART_RX_GPIO_PIN GPIO_PIN_6
) y# I& o: F/ F) O6 n: N3 @
#define USART_RX_GPIO_AF GPIO_AF7_USART1
9 y+ j) ^3 }0 v! j( ]. m
#define USART_RX_GPIO_CLK_ENABLE() do{ __HAL_RCC_GPIOE_CLK_ENABLE(); }while(0)
9 `7 B: V" ]5 U0 A$ Q
: ^" ~/ O/ D# n
#define USART_UX USART1
, I. n2 ~/ e+ q) }# N% `% h0 b9 Z
#define USART_UX_CLK_ENABLE() do{ __HAL_RCC_USART1_CLK_ENABLE(); }while(0) # A" v' X" j$ Y+ ~9 Y! _
4 m) O- u7 Z, Z6 C9 i& ^
void usart_init(uint32_t baudrate); - q- p( E, U) c
+ O" u) [, o6 v# [: _
#endif9 X+ ]+ B( y! c; e- a! T8 N# R3 ]

复制代码

2.3、main.c

int main(void)
, V: o' z8 P; X& N4 B; U/ s+ [
{. g" z/ H3 r, S0 f& g) I
; [) i6 {& i7 P5 ]" R
/* USER CODE BEGIN 1 */
; [4 ?- U3 ^/ h/ N* [7 ^
# B+ d) U# s4 F4 T. T
/* USER CODE END 1 */
% X3 M- ^: g2 Y6 C6 O
, G! S2 w0 a& n- | q
/* MCU Configuration--------------------------------------------------------*/2 k# |/ b! A4 i5 ^
HAL_Init();
Z5 L' h+ G+ E' z
9 _) ]" n( Z7 ^
/* USER CODE BEGIN Init */" B( t# Z% ^, I2 y
: D' x( e7 ?: V- B$ R2 x* c# ]; X
/* USER CODE END Init */
% c0 D: _, S& j+ ^; `0 w/ t0 Q
9 k0 Y: [5 ]% _8 A5 N
/* Configure the system clock */
- I- ^; |& F0 [5 Z
SystemClock_Config();
* B- W9 y4 |5 R6 G. k* I
5 T2 n1 R$ e" v z6 t1 g
/* Configure the peripherals common clocks */
( f3 [3 J- f+ h3 ], B' A
PeriphCommonClock_Config();, O1 m" H! ^5 b1 C
6 N% {1 J+ N" W: m7 t% V
/* USER CODE BEGIN SysInit */5 d5 f& d% N) c5 S- r
d8 Z2 T5 N3 L( B, u) `/ O
/* USER CODE END SysInit */8 m3 [3 H' Q& d
7 X& n6 V9 J& F9 k4 f' f# C
/* Initialize all configured peripherals */( M6 I6 J& F1 ~ S1 O% B
// MX_GPIO_Init();
# Y B" i8 {- I& O& x
// MX_ADC1_Init();8 G: x& U9 \" k0 J
// MX_CSI_Init();
y' L) \: V( H8 F/ R
// MX_I2C1_Init();( ^# I$ S" a) k; w) T+ F. W
// MX_I2C2_Init();
& H3 N7 [! W( f0 p+ q3 s9 H/ `
// MX_ICACHE_Init();
9 G) N& O9 e8 T' j
// MX_MDF1_Init();+ f% D* I+ j5 T6 ?' f! f- Y& B
// MX_SAI1_Init();
& c5 q: |8 v9 G
// MX_SDMMC2_SD_Init();
' z% K. v7 v. \" p% ^
// MX_UCPD1_Init();
! h3 c% o* j: o3 O7 Q3 k$ v
// MX_USART1_UART_Init();
& a, P: Z& p4 q7 |3 V
// MX_USB1_OTG_HS_USB_Init();0 t- ~, @, \- H3 t. i* M+ e4 m
// MX_USB2_OTG_HS_HCD_Init();. y0 P2 i1 N6 Y Y' s' `
// MX_XSPI1_Init();* G& c% `& C8 F
// MX_XSPI2_Init();
: q5 s, r% n0 i9 z( a
/* USER CODE BEGIN 2 */
* _: m' v3 B8 e& Q- E% Z
usart_init(115200);6 B( A9 q; U' w
init_led();
! N2 S5 g7 F0 S! M$ U
/* USER CODE END 2 */
. g& |: r8 Y/ q) ~! B; K7 {
$ B& b, y s/ a; k& E
/* Infinite loop */) V# X, _. N! ]) Q1 W6 ^ U+ `
/* USER CODE BEGIN WHILE */
8 P0 Q; J: K% y% w+ J! T
while (1)" e( d6 b+ z. r, ?2 U/ D0 ~
{: e9 \" s. w' |1 k% U% g
/* USER CODE END WHILE */
5 g; a' \" r5 J5 s4 P
6 b+ R9 y3 S' [" F0 V# l" X
/* USER CODE BEGIN 3 */
- D# H, n; \( |4 j
printf(" usart1 printf test! \r\n");& y8 r8 e7 m. M+ R' @5 q9 i* B0 U2 J
led1_tog();0 f# y, G) U, M
led2_tog();9 o) Q3 H$ ^" v
//HAL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin);
: P3 L' X: X" X& [
//HAL_GPIO_TogglePin(LED2_GPIO_Port, LED2_Pin);
. N! F. p% ^, p! l }( h R
/* Insert delay 200 ms */& Q2 m+ Y& J" h v
HAL_Delay(200);
2 k4 y$ O) O$ R* |2 J
}
, f! [7 d6 L) J7 I7 K
/* USER CODE END 3 */& ]/ b: Y: S2 ?
}