【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"2 M7 e# c4 [+ f& ~% W0 i8 a; s
#include "usart/usart.h". w" B5 e$ `1 E* X6 V: I7 k" ]
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UART_HandleTypeDef g_usart1_handle;( C7 O% p' t' R+ ~5 M7 k4 M' j" P [
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int fputc(int ch, FILE *f)6 V) [5 X9 F. f6 F4 W
{
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while ((USART_UX->ISR & 0X40) == 0); ( T0 U @" e' n+ |: G3 e/ o- Z1 Q
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USART_UX->TDR = (uint8_t)ch;
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return ch;7 ]0 {! p; S9 A" Y8 b+ t6 N
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void usart_init(uint32_t baudrate)
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GPIO_InitTypeDef gpio_init_struct;) E# i+ F; v; G6 g: P
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USART_UX_CLK_ENABLE();
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USART_TX_GPIO_CLK_ENABLE(); , s M/ y# | a6 j; U7 g( D2 L
USART_RX_GPIO_CLK_ENABLE(); " y* t9 @( X# w$ u' |0 q3 ~8 q7 o
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;
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gpio_init_struct.Speed = GPIO_SPEED_FREQ_HIGH; ) ^" c# L( n' @. C$ A
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; $ a/ T: S; @9 u" b6 i- z" l
gpio_init_struct.Alternate = USART_RX_GPIO_AF; 5 a* z+ |! F3 x: ?! r! U
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; ; r8 }; q3 [4 u- E
g_usart1_handle.Init.StopBits = UART_STOPBITS_1; $ l8 ^+ O- ?# _" ^( I
g_usart1_handle.Init.Parity = UART_PARITY_NONE; ' [' x; V, y5 N, E+ N6 a' G8 k0 N' j
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_H
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#include "stdio.h"
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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! |: R9 `( k1 G3 W8 c" c4 y- S
#define USART_TX_GPIO_CLK_ENABLE() do{ __HAL_RCC_GPIOE_CLK_ENABLE(); }while(0) , @' P( d+ `, i: T& s4 F3 ?
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#define USART_RX_GPIO_PORT GPIOE
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#define USART_RX_GPIO_PIN GPIO_PIN_6
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#define USART_RX_GPIO_AF GPIO_AF7_USART1& v: C3 q. w/ B* z
#define USART_RX_GPIO_CLK_ENABLE() do{ __HAL_RCC_GPIOE_CLK_ENABLE(); }while(0) 4 ^# h+ V8 ]# ?5 q9 B5 b; H
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#define USART_UX USART1" Z2 r6 f# v4 p; e1 Q' m8 M
#define USART_UX_CLK_ENABLE() do{ __HAL_RCC_USART1_CLK_ENABLE(); }while(0) / ]2 r G5 M8 u5 f- f# f$ S
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void usart_init(uint32_t baudrate);
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#endif
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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 */
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/* MCU Configuration--------------------------------------------------------*/
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HAL_Init();
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/* USER CODE BEGIN Init */
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/* USER CODE END Init */
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/* Configure the system clock */+ u, V9 b' v, m3 F3 s# K9 e
SystemClock_Config();3 Z- W5 ^3 i% h
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/* Configure the peripherals common clocks *// q* ]" @( U M2 M8 Y1 n/ R8 z! m
PeriphCommonClock_Config();
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/* USER CODE BEGIN SysInit */8 U y: V$ z; A4 x3 c6 {4 X9 i
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/* USER CODE END SysInit */, w, B( }: ]9 V3 x
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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();- p. E8 S# z* |& p) B) m1 N
// MX_I2C1_Init();( M0 Z4 J. j. D% z3 Y% K
// MX_I2C2_Init();" k$ u$ ^8 c4 {. I
// MX_ICACHE_Init();2 b0 K) n9 S" d0 T3 K! R: [- i3 I
// 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();+ a z; \* D E: k# m1 S
// MX_USART1_UART_Init();
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// MX_USB1_OTG_HS_USB_Init();' W( a" n7 D L. j; c! |; \
// MX_USB2_OTG_HS_HCD_Init();
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// MX_XSPI1_Init();) B, H- q2 G6 {% _) C9 B3 g
// MX_XSPI2_Init();
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/* USER CODE BEGIN 2 */$ X/ L! H7 B8 _1 L
usart_init(115200);
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init_led();8 i* Z1 P6 l: {9 c: @' L/ {6 C
/* USER CODE END 2 */: [- J4 F2 p) }) B' x
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/* Infinite loop */
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/* USER CODE BEGIN WHILE */
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while (1)# J& A6 [& E4 N2 F; Y
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/* USER CODE END WHILE */. L- S0 J' H7 {' U- C
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/* USER CODE BEGIN 3 */
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printf(" usart1 printf test! \r\n");
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led1_tog();' |4 N) `5 M- i; Y M2 N
led2_tog();
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//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);: B; F) S o2 B$ ~
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/* USER CODE END 3 */
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}