【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"9 n% J. S+ P7 O$ A& \
#include "usart/usart.h"
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UART_HandleTypeDef g_usart1_handle;( h% X8 u) y+ v1 Y
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int fputc(int ch, FILE *f)
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{
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while ((USART_UX->ISR & 0X40) == 0); % p( B2 j9 W, F7 j$ e
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USART_UX->TDR = (uint8_t)ch; 6 a6 i& P; ?" O" k* j
return ch;3 ~% j2 z( w/ K; u4 ?
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void usart_init(uint32_t baudrate)
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GPIO_InitTypeDef gpio_init_struct;
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USART_UX_CLK_ENABLE();
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USART_TX_GPIO_CLK_ENABLE(); 1 | q# A2 D% Z' w; u
USART_RX_GPIO_CLK_ENABLE(); ) X; q0 Q E# y
gpio_init_struct.Pin = USART_TX_GPIO_PIN; 5 \5 Y2 Y4 e" w, c9 j
gpio_init_struct.Mode = GPIO_MODE_AF_PP;
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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);
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gpio_init_struct.Pin = USART_RX_GPIO_PIN; $ K e" k# T# a; H+ o/ e
gpio_init_struct.Alternate = USART_RX_GPIO_AF; 4 G$ r: S4 ^6 a1 e
HAL_GPIO_Init(USART_RX_GPIO_PORT, &gpio_init_struct); 6 w9 K0 F5 S) r W
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g_usart1_handle.Instance = USART_UX;
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g_usart1_handle.Init.BaudRate = baudrate; 7 J, {. s6 x: I9 ?7 A) C1 y
g_usart1_handle.Init.WordLength = UART_WORDLENGTH_8B; - `2 O7 A: d' D" t3 [
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; 8 e" ?4 n" A! s: L
g_usart1_handle.Init.Mode = UART_MODE_TX_RX;
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HAL_UART_Init(&g_usart1_handle); 2 v" k O3 [- Q% Q1 A/ e7 T9 o& {
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}

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2.2、usart.h

#ifndef _USART_H1 O( d' d2 h! V# t# b2 x: Q
#define _USART_H
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#include "stdio.h". e) @: M- D" R, i2 F4 F+ Y5 M
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#define USART_TX_GPIO_PORT GPIOE+ g7 U* S8 Q7 f$ }; o
#define USART_TX_GPIO_PIN GPIO_PIN_5 p+ B! c# o9 {5 w$ |
#define USART_TX_GPIO_AF GPIO_AF7_USART1: m# n5 i, |- T0 K# P) f" P' o
#define USART_TX_GPIO_CLK_ENABLE() do{ __HAL_RCC_GPIOE_CLK_ENABLE(); }while(0) % o9 H( Q: W$ W8 k9 P3 Y: K% h
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#define USART_RX_GPIO_PORT GPIOE4 q) ~+ J3 g$ H1 c- i& G& ]
#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)
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#define USART_UX USART1- H/ N0 y! L3 b6 O& e( U2 u
#define USART_UX_CLK_ENABLE() do{ __HAL_RCC_USART1_CLK_ENABLE(); }while(0) , ]5 t- l* a' X5 I8 _1 N* ]6 e
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void usart_init(uint32_t baudrate); 6 V3 L) ~5 d" e! `7 e( m6 ~% l# ? {
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#endif6 {7 ~7 E, c" u0 a: u

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2.3、main.c

int main(void)
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/* USER CODE BEGIN 1 */5 V) V! R! W/ |8 J
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/* USER CODE END 1 */7 {. v( M/ w" s' N2 u
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/* MCU Configuration--------------------------------------------------------*/
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HAL_Init();; M: L3 M$ |' f
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/* USER CODE BEGIN Init */
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/* USER CODE END Init */7 s& {; C( |: @) m% Z8 a: x
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/* Configure the system clock */
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SystemClock_Config();/ {- ~4 O% f' L2 i% b8 Y
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/* Configure the peripherals common clocks */
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PeriphCommonClock_Config();+ o! l3 }: D9 b/ [
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/* USER CODE BEGIN SysInit */8 w; z1 s7 v( V3 H
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/* USER CODE END SysInit */
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/* Initialize all configured peripherals */, M8 ~" s7 t! F8 Q- D& T1 [/ I
// MX_GPIO_Init();: K4 G9 f% t; X0 Y8 s* H
// MX_ADC1_Init();( V7 Y0 H, {6 Y4 ~* q7 K. ]
// MX_CSI_Init();
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// MX_I2C1_Init();7 b+ f# h3 ^( g: W
// MX_I2C2_Init();% z ~5 _& P% z" w9 x
// MX_ICACHE_Init();
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// MX_MDF1_Init();) r3 N( m( {$ w% a( k; t0 R+ x
// MX_SAI1_Init();, a% a+ v) n5 P Q
// MX_SDMMC2_SD_Init();
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// MX_UCPD1_Init();
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// MX_USART1_UART_Init();2 \1 r( m( ^9 a# F5 @8 i) v" n
// MX_USB1_OTG_HS_USB_Init();
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// MX_USB2_OTG_HS_HCD_Init();
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// MX_XSPI1_Init();. ]9 `. y6 p2 n" t
// MX_XSPI2_Init();
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/* USER CODE BEGIN 2 */
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usart_init(115200);) K* U. ~9 S: J! ~ a/ B
init_led();
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/* USER CODE END 2 */2 W3 N7 l$ k' P
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/* Infinite loop *// q7 [$ ^# m2 I6 Z7 W
/* USER CODE BEGIN WHILE */- H* L) ]. Q* N6 E- C+ |/ K6 ?6 f; p6 z
while (1)
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/* USER CODE END WHILE */, y0 \5 ^) O* N/ f* q2 P( M
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/* USER CODE BEGIN 3 */
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printf(" usart1 printf test! \r\n");
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led1_tog();
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led2_tog();( E8 M: C, D$ U8 [) D
//HAL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin);5 G5 B1 o, B" U$ e
//HAL_GPIO_TogglePin(LED2_GPIO_Port, LED2_Pin);& T9 [8 E: c, ?: @) ?; u
/* Insert delay 200 ms */
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HAL_Delay(200);4 q5 w; i7 r v1 f' K
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/* USER CODE END 3 */8 t/ W. [0 h6 O% h3 `
}