【STM32N6570-DK评测】串口1printf输出测试

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TLLED 发布时间：2025-2-7 23:23

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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"
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#include "usart/usart.h"
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UART_HandleTypeDef g_usart1_handle;
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int fputc(int ch, FILE *f)
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while ((USART_UX->ISR & 0X40) == 0);
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USART_UX->TDR = (uint8_t)ch;
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return ch;0 M9 d; F8 P7 {8 Q) ]9 c1 L
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void usart_init(uint32_t baudrate)) a. Z% o9 P+ v3 e. I4 |
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GPIO_InitTypeDef gpio_init_struct;
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USART_UX_CLK_ENABLE(); " [# c8 A' J, t6 H- ~8 A
USART_TX_GPIO_CLK_ENABLE(); ; r- f C" s! A+ c0 P6 }2 F$ w7 d
USART_RX_GPIO_CLK_ENABLE();
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gpio_init_struct.Pin = USART_TX_GPIO_PIN; + k6 M4 i( n! e2 b6 x3 ?+ o
gpio_init_struct.Mode = GPIO_MODE_AF_PP; 8 F2 n- Q. n& w9 A( P4 W1 `
gpio_init_struct.Pull = GPIO_PULLUP;
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gpio_init_struct.Speed = GPIO_SPEED_FREQ_HIGH;
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gpio_init_struct.Alternate = USART_TX_GPIO_AF;
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HAL_GPIO_Init(USART_TX_GPIO_PORT, &gpio_init_struct); 5 l8 }; S- g& @# x8 O
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gpio_init_struct.Pin = USART_RX_GPIO_PIN;
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gpio_init_struct.Alternate = USART_RX_GPIO_AF; 1 e: ~3 ~, V. m8 n1 t
HAL_GPIO_Init(USART_RX_GPIO_PORT, &gpio_init_struct);
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g_usart1_handle.Instance = USART_UX;
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g_usart1_handle.Init.BaudRate = baudrate;
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g_usart1_handle.Init.WordLength = UART_WORDLENGTH_8B;
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g_usart1_handle.Init.StopBits = UART_STOPBITS_1; ! z# |" ], [+ @+ e; v
g_usart1_handle.Init.Parity = UART_PARITY_NONE;
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g_usart1_handle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
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g_usart1_handle.Init.Mode = UART_MODE_TX_RX;
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HAL_UART_Init(&g_usart1_handle);
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}

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2.2、usart.h

#ifndef _USART_H
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#define _USART_H8 M: Y' a/ @5 x* o' Y ?8 q
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#include "stdio.h"" q: _3 n9 i( N0 Z% z! Q/ ]2 q; I
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#define USART_TX_GPIO_PORT GPIOE
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#define USART_TX_GPIO_PIN GPIO_PIN_5
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#define USART_TX_GPIO_AF GPIO_AF7_USART1
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#define USART_TX_GPIO_CLK_ENABLE() do{ __HAL_RCC_GPIOE_CLK_ENABLE(); }while(0) 5 H* `( Q( Q5 A
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#define USART_RX_GPIO_PORT GPIOE) @2 q6 c; d7 J1 e7 J3 |7 m, S
#define USART_RX_GPIO_PIN GPIO_PIN_6
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#define USART_RX_GPIO_AF GPIO_AF7_USART1
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#define USART_RX_GPIO_CLK_ENABLE() do{ __HAL_RCC_GPIOE_CLK_ENABLE(); }while(0) # Q6 H. x" u; `. `$ z- `! k2 j, F
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#define USART_UX USART1
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#define USART_UX_CLK_ENABLE() do{ __HAL_RCC_USART1_CLK_ENABLE(); }while(0)
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void usart_init(uint32_t baudrate); ( c9 K4 W7 R8 K2 i$ v+ v- o
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#endif; X' R" v* g4 u# w

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2.3、main.c

int main(void)2 j4 m9 _$ Z$ D8 _; R; x3 k
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/* USER CODE BEGIN 1 */
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/* USER CODE END 1 */4 h4 h8 R0 j8 m3 o s8 n9 c
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/* MCU Configuration--------------------------------------------------------*/7 F2 V u" `% U& r/ F' R
HAL_Init();0 g0 w$ q5 c9 S9 @# ^# ~3 j, ^
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/* USER CODE BEGIN Init */
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/* USER CODE END Init */
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/* Configure the system clock */% ~1 r$ m! `2 k; z+ W# K
SystemClock_Config();, K# A2 @) z. _2 U; }/ O
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/* Configure the peripherals common clocks */
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PeriphCommonClock_Config();
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/* USER CODE BEGIN SysInit */; M1 O+ h0 e+ o2 p
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/* USER CODE END SysInit */$ l4 i4 v e/ f. y
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/* Initialize all configured peripherals */
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// MX_GPIO_Init();
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// MX_ADC1_Init();
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// MX_CSI_Init();
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// MX_I2C1_Init();+ ]6 C& O7 Q" d1 T
// MX_I2C2_Init();- z9 G6 o6 t* D& v6 t6 N9 P
// MX_ICACHE_Init();; s3 I% A, Y# ~
// MX_MDF1_Init();
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// MX_SAI1_Init();! L; ?3 {% z+ h0 S0 X, G
// MX_SDMMC2_SD_Init();
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// MX_UCPD1_Init();$ L# r5 d( v0 \) x6 {) m
// MX_USART1_UART_Init();
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// MX_USB1_OTG_HS_USB_Init();
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// MX_USB2_OTG_HS_HCD_Init();, v" Z! v! f6 ~3 P$ C5 R
// MX_XSPI1_Init();5 s7 Q6 ]- x( _, o
// MX_XSPI2_Init();4 J5 [, Y0 g& e) Y4 |4 p0 ^: H- K
/* USER CODE BEGIN 2 */- N) K! M) j5 B; w
usart_init(115200);
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init_led();! W* F _- M# G I% s0 M+ W9 c
/* USER CODE END 2 */
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/* Infinite loop */
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/* USER CODE BEGIN WHILE */ J$ ~) \, q9 e6 G: I
while (1): C; Y5 e+ E: d; @/ v6 \
{
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/* USER CODE END WHILE */. b$ c7 S. F4 c2 q* ~7 m
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/* USER CODE BEGIN 3 */; h9 E" O9 x/ f& L, R( j# w* V, k
printf(" usart1 printf test! \r\n");
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led1_tog();
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led2_tog();+ {5 o" Q, _# }! M, Q
//HAL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin);
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//HAL_GPIO_TogglePin(LED2_GPIO_Port, LED2_Pin);4 U$ [# G( I0 o' g: P q. m
/* Insert delay 200 ms */
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HAL_Delay(200);
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/* USER CODE END 3 */
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}