【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"1 H4 V7 c/ F" E
#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); 8 H" z' `" |) D9 e) s
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USART_UX->TDR = (uint8_t)ch; 2 d! A- l; p: O7 Y& K+ j# B
return ch;
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void usart_init(uint32_t baudrate)$ R; ]" c) Q1 k' ?0 X2 U
{
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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();
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USART_RX_GPIO_CLK_ENABLE();
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gpio_init_struct.Pin = USART_TX_GPIO_PIN; 7 p4 S6 }0 i. v, U$ P B
gpio_init_struct.Mode = GPIO_MODE_AF_PP; 1 c( C* `, O& u% ~: g7 r% V
gpio_init_struct.Pull = GPIO_PULLUP;
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gpio_init_struct.Speed = GPIO_SPEED_FREQ_HIGH; ) {# _ Q& n. T* n
gpio_init_struct.Alternate = USART_TX_GPIO_AF; 6 b) _4 Y, T j2 U' Z
HAL_GPIO_Init(USART_TX_GPIO_PORT, &gpio_init_struct); / H7 p8 J% [" G9 }$ {
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gpio_init_struct.Pin = USART_RX_GPIO_PIN; " I1 Z( c9 H9 b# ~
gpio_init_struct.Alternate = USART_RX_GPIO_AF; / B3 i% j" G/ p! q5 R8 t$ \
HAL_GPIO_Init(USART_RX_GPIO_PORT, &gpio_init_struct);
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g_usart1_handle.Instance = USART_UX; 2 a+ D4 w" K- M5 `
g_usart1_handle.Init.BaudRate = baudrate;
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g_usart1_handle.Init.WordLength = UART_WORDLENGTH_8B; / P* A( ?6 {3 ?" T8 |8 Y
g_usart1_handle.Init.StopBits = UART_STOPBITS_1;
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g_usart1_handle.Init.Parity = UART_PARITY_NONE; 1 B& c1 Z7 Q6 }
g_usart1_handle.Init.HwFlowCtl = UART_HWCONTROL_NONE; 6 I" g. b! q% }; E5 F
g_usart1_handle.Init.Mode = UART_MODE_TX_RX; 0 z2 ]& W% m) n& Y: D3 n- [
HAL_UART_Init(&g_usart1_handle); $ L. j$ E3 v8 C5 J j
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}

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2.2、usart.h

#ifndef _USART_H
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#define _USART_H
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#include "stdio.h"
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#define USART_TX_GPIO_PORT GPIOE* ]6 V3 q; F; [
#define USART_TX_GPIO_PIN GPIO_PIN_5- ^ b6 }, m5 D0 u3 A
#define USART_TX_GPIO_AF GPIO_AF7_USART1# k9 n' ]- N* g) l' S
#define USART_TX_GPIO_CLK_ENABLE() do{ __HAL_RCC_GPIOE_CLK_ENABLE(); }while(0)
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#define USART_RX_GPIO_PORT GPIOE* n$ e8 s8 W/ a# j3 s$ \+ I O3 C
#define USART_RX_GPIO_PIN GPIO_PIN_6: y; J# ?! X: r! U! K
#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) 8 @. t$ ]0 }5 [8 s' o
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#define USART_UX USART1$ G% c! Y0 L% U" Q3 g
#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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#endif5 z* o5 |* m$ a1 S

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2.3、main.c

int main(void)
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{
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/* USER CODE BEGIN 1 */
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/* USER CODE END 1 *// N% U1 a% a* D( O0 B
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/* MCU Configuration--------------------------------------------------------*/+ C+ ~5 J* \! l
HAL_Init();
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/* USER CODE BEGIN Init */& D, N( n0 U7 x9 H
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/* USER CODE END Init */
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/* Configure the system clock */$ @6 Y2 w" f+ R& \- w, M' \( i0 E
SystemClock_Config();* _8 \2 C# A, \: p7 j
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/* Configure the peripherals common clocks */) L! A% I, ]- R( k/ W+ p3 K
PeriphCommonClock_Config();+ n/ w$ t0 B* x0 K$ \: x
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/* USER CODE BEGIN SysInit */' n, X4 N/ K; ]/ J5 d! l8 }9 C" |9 h
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/* USER CODE END SysInit */
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/* Initialize all configured peripherals */7 U% r) A, D$ U% K9 N' r
// MX_GPIO_Init();, e. R5 x' B" y& T; y, m. e1 X
// MX_ADC1_Init();
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// MX_CSI_Init();
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// MX_I2C1_Init();
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// MX_I2C2_Init();6 l4 u! J# v- S* m: Q
// MX_ICACHE_Init(); z) ~7 N. E, a6 Z0 _
// MX_MDF1_Init();
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// 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();: D: T: k6 k! q7 y% t% r
// MX_USB1_OTG_HS_USB_Init();; G' Z: C! u" u. \
// MX_USB2_OTG_HS_HCD_Init();
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// MX_XSPI1_Init();% o' Y. \* J& H+ V" E0 U2 I
// MX_XSPI2_Init();6 F2 |; t( g6 f p# K% r
/* USER CODE BEGIN 2 */
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usart_init(115200);/ _* i+ S& v( v2 W% Q3 l( j
init_led();+ N- e0 M8 i, f0 I* a/ d
/* USER CODE END 2 */
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/* Infinite loop */
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/* USER CODE BEGIN WHILE */# }# b8 m) C2 b; O+ E; N' @
while (1)% s0 y$ [2 l' ]! ?! c1 z
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/* USER CODE END WHILE */
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/* USER CODE BEGIN 3 */
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printf(" usart1 printf test! \r\n");
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led1_tog();- u$ }! X5 z( d' t" o% ^
led2_tog();: j- F( N! p( }" {1 H% A
//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 */
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HAL_Delay(200);1 q/ `, g, [1 Y5 h$ u/ A; h$ {5 @. o
}
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/* USER CODE END 3 */
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}