【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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{
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while ((USART_UX->ISR & 0X40) == 0);
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USART_UX->TDR = (uint8_t)ch; 0 q _3 X% N( I/ f* {: k5 H
return ch;
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}
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void usart_init(uint32_t baudrate)
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{
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GPIO_InitTypeDef gpio_init_struct;+ v6 F3 i0 t; V1 c0 }
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USART_UX_CLK_ENABLE(); ) [" q& s. x; s( d7 d
USART_TX_GPIO_CLK_ENABLE(); : \( v9 w" M# ~- o2 L5 V# s' @* m
USART_RX_GPIO_CLK_ENABLE(); - G' h+ j; G" n; Z# W% B0 M) q
gpio_init_struct.Pin = USART_TX_GPIO_PIN;
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gpio_init_struct.Mode = GPIO_MODE_AF_PP;
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gpio_init_struct.Pull = GPIO_PULLUP; % E9 w, I0 d K I
gpio_init_struct.Speed = GPIO_SPEED_FREQ_HIGH; 3 d o) }$ }" ^" V0 g9 x3 B
gpio_init_struct.Alternate = USART_TX_GPIO_AF;
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HAL_GPIO_Init(USART_TX_GPIO_PORT, &gpio_init_struct);
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gpio_init_struct.Pin = USART_RX_GPIO_PIN; ) w% h3 o) N1 }0 J) I" w( w% W( B
gpio_init_struct.Alternate = USART_RX_GPIO_AF;
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HAL_GPIO_Init(USART_RX_GPIO_PORT, &gpio_init_struct); ) ^ p7 D$ K$ ]! J" s
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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; # k( c2 {0 H$ h' o7 s( X) K
g_usart1_handle.Init.StopBits = UART_STOPBITS_1;
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g_usart1_handle.Init.Parity = UART_PARITY_NONE;
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g_usart1_handle.Init.HwFlowCtl = UART_HWCONTROL_NONE; : {& f" N# h4 N9 ^. z( c% c3 u8 ~! L
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_H2 G- O+ ]4 n, z! }8 ^3 p
#define _USART_H
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#include "stdio.h"
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#define USART_TX_GPIO_PORT GPIOE7 d& L @& I9 ^2 }7 e
#define USART_TX_GPIO_PIN GPIO_PIN_5" x4 D! c1 f# b. o, f
#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) }" d/ S( ^$ I6 n$ ]: u
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#define USART_RX_GPIO_PORT GPIOE/ t/ A+ }, R1 n! h! ~7 {6 M& Z$ f2 m
#define USART_RX_GPIO_PIN GPIO_PIN_6! ~+ ] w3 |% i( a
#define USART_RX_GPIO_AF GPIO_AF7_USART10 g, |% d, w% j% H3 b! u
#define USART_RX_GPIO_CLK_ENABLE() do{ __HAL_RCC_GPIOE_CLK_ENABLE(); }while(0) ( X5 h5 h- m6 d+ m+ j
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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);
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#endif8 q: N2 a7 A4 E' a6 n% w5 ?. t

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2.3、main.c

int main(void)! v& @$ E9 ~0 G% q9 w
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/* USER CODE BEGIN 1 */
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/* USER CODE END 1 */
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/* MCU Configuration--------------------------------------------------------*/0 r( N% l9 b$ i0 ~
HAL_Init();
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/* USER CODE BEGIN Init */+ a5 A* H9 c, }8 Z9 ^7 [4 \2 l
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/* USER CODE END Init */5 y5 c2 }' ], ?' w! l2 f& U5 b" T' C
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/* Configure the system clock */
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SystemClock_Config();2 w1 U ^% m: c, x% Y% H1 Y
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/* Configure the peripherals common clocks */7 `% S$ }6 a9 q
PeriphCommonClock_Config();2 }0 B8 o0 y4 @; p! \! X
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/* USER CODE BEGIN SysInit */
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/* USER CODE END SysInit */7 D" ?1 o$ b5 X3 k; n2 ~
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/* Initialize all configured peripherals */" J) @) z U% x% N7 L, k
// MX_GPIO_Init();
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// MX_ADC1_Init();' @# Z" W; ?9 Q9 r; `" Z( Z% w
// MX_CSI_Init();: w- b% h8 `# K. B& K: z" X- H
// MX_I2C1_Init();
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// MX_I2C2_Init();
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// MX_ICACHE_Init();, x) u2 C+ q5 a; F5 O. Z9 d
// MX_MDF1_Init();5 |- P+ d5 N3 a3 d6 N
// MX_SAI1_Init();
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// MX_SDMMC2_SD_Init();
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// MX_UCPD1_Init();
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// MX_USART1_UART_Init();$ E8 u4 \% P# g# m8 J4 l8 Q
// MX_USB1_OTG_HS_USB_Init();
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// MX_USB2_OTG_HS_HCD_Init();+ \1 v6 _ s' ^: |5 u
// MX_XSPI1_Init();
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// MX_XSPI2_Init();
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/* USER CODE BEGIN 2 */
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usart_init(115200);
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init_led();9 u, O2 _/ d6 d# d9 M$ x/ ^6 r
/* USER CODE END 2 */. L" ~, v6 [* ^. {7 X
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/* Infinite loop */
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/* USER CODE BEGIN WHILE */! j" x0 ~! r4 T" m7 v' A/ V. l/ y
while (1) V# L# S& Q8 F' C A, v
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/* USER CODE END WHILE */( ]5 f2 x5 H$ J1 z& ?4 x6 S3 x6 o
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/* USER CODE BEGIN 3 */( e1 f" a$ D" L. T
printf(" usart1 printf test! \r\n");7 U Y4 k5 F5 u0 `# w" j
led1_tog();
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led2_tog();3 y! b& L* T- V2 ?
//HAL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin);
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//HAL_GPIO_TogglePin(LED2_GPIO_Port, LED2_Pin);
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/* Insert delay 200 ms */6 Y/ O$ V2 J3 s, P4 U; u
HAL_Delay(200);
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}
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/* USER CODE END 3 */
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}