ST意法半导体中文论坛第一个rs232串口打印程序

mantishell 发表于 2014-12-24 18:35:49

第一个rs232串口打印程序

本帖最后由 mantishell 于 2015-1-5 10:38 编辑

从8号收到货，到现在已经有两周多些了:L，时间过的太快了。不过首先谢谢版主。只是这段时间一直没得空搞这个。
那么今天开始我的第一个程序。

很抱歉，上次忘记把代码上传，第二天电脑硬盘坏掉，好伤心，换了一块硬盘，一切从头开始。
昨天安装了编译器，以及j-link驱动，今天早上实现了将程序下载到板子上，发现一个简单的办法。就像是把程序直接放到u盘上一样。
方法如下图所示：
然后将生成的.bin文件直接放置到图3的u盘里，就能看到板子上有变化了。

fromelf.exe --bin -o @p.bin ram/STM32F072RB-Nucleo.axf
@p.bin：是生成的目标文件
ram：是存放.axf文件的目录，也就是存放output文件的目录
STM32F072RB-Nucleo.axf：是图1中生成目标文件的文件名。

巅峰残狼 发表于 2014-12-24 20:47:45

没看到程序，忘了上传吗

奔跑小蜗牛 发表于 2014-12-25 10:04:41

:Dcome on 光说不干假把式，代码写起来，让俺们瞅一瞅:lol

沐紫发表于 2014-12-25 10:13:09

走起:)

mantishell 发表于 2015-1-5 15:05:28

本帖最后由 mantishell 于 2015-1-5 15:16 编辑

/* Includes ------------------------------------------------------------------*/
#include "stm32f0xx_hal.h"

/* Private variables ---------------------------------------------------------*/
UART_HandleTypeDef huart1;
UART_HandleTypeDef huart2;

/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART1_UART_Init(void);
static void MX_USART2_UART_Init(void);

void putchar(unsigned char data)
{
   while(!(USART2->ISR & (1<<7)));
   USART2->TDR = data;
}
void puts(unsigned char *p)
{
   while(*p != 0)
   {
            putchar(*p);
            p++;
   }
}int main(void)
{

/* USER CODE BEGIN 1 */

/* USER CODE END 1 */

/* MCU Configuration----------------------------------------------------------*/

/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();

/* Configure the system clock */
SystemClock_Config();

/* System interrupt init*/
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);

/* Initialize all configured peripherals */
MX_GPIO_Init();
   //HAL_UART_MspInit(&huart2);
//MX_USART1_UART_Init();
MX_USART2_UART_Init();

/* USER CODE BEGIN 2 */

/* USER CODE END 2 */

/* USER CODE BEGIN 3 */
/* Infinite loop */
while (1)
{
            puts("123456");
}
/* USER CODE END 3 */

}

/** System Clock Configuration
*/
void SystemClock_Config(void)
{

RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_PeriphCLKInitTypeDef PeriphClkInit;
RCC_OscInitTypeDef RCC_OscInitStruct;

RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = 16;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL6;
RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV1;
HAL_RCC_OscConfig(&RCC_OscInitStruct);

RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1);

PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1|RCC_PERIPHCLK_USART2;
PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK1;
PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1;
HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit);

__SYSCFG_CLK_ENABLE();

}

/* USART1 init function */
void MX_USART1_UART_Init(void)
{

huart1.Instance = USART1;
huart1.Init.BaudRate = 9600;
huart1.Init.WordLength = UART_WORDLENGTH_7B;
huart1.Init.StopBits = UART_STOPBITS_1;
huart1.Init.Parity = UART_PARITY_NONE;
huart1.Init.Mode = UART_MODE_TX_RX;
huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart1.Init.OverSampling = UART_OVERSAMPLING_16;
huart1.Init.OneBitSampling = UART_ONEBIT_SAMPLING_DISABLED ;
huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
HAL_UART_Init(&huart1);

}

/* USART2 init function */
void MX_USART2_UART_Init(void)
{

huart2.Instance = USART2;
huart2.Init.BaudRate = 9600;
huart2.Init.WordLength = UART_WORDLENGTH_8B;
huart2.Init.StopBits = UART_STOPBITS_1;
huart2.Init.Parity = UART_PARITY_NONE;
huart2.Init.Mode = UART_MODE_TX_RX;
huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart2.Init.OverSampling = UART_OVERSAMPLING_16;
huart2.Init.OneBitSampling = UART_ONEBIT_SAMPLING_DISABLED ;
huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
HAL_UART_Init(&huart2);

}

/** Configure pins as
   * Analog
   * Input
   * Output
   * EVENT_OUT
   * EXTI
PA6 ------> TSC_G2_IO3
PA7 ------> TSC_G2_IO4
PB0 ------> TSC_G3_IO2
PB1 ------> TSC_G3_IO3
PB10 ------> I2C2_SCL
PB11 ------> I2C2_SDA
PB13 ------> SPI2_SCK
PB14 ------> SPI2_MISO
PB15 ------> SPI2_MOSI
*/
void MX_GPIO_Init(void)
{

GPIO_InitTypeDef GPIO_InitStruct;

/* GPIO Ports Clock Enable */
__GPIOC_CLK_ENABLE();
__GPIOA_CLK_ENABLE();
__GPIOB_CLK_ENABLE();

/*Configure GPIO pins : PC0 PC5 PC6 PC7
                        PC8 PC9 */
GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7
                     |GPIO_PIN_8|GPIO_PIN_9;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

/*Configure GPIO pins : PC1 PC2 */
GPIO_InitStruct.Pin = GPIO_PIN_1|GPIO_PIN_2;
GPIO_InitStruct.Mode = GPIO_MODE_EVT_RISING;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

/*Configure GPIO pin : PA0 */
GPIO_InitStruct.Pin = GPIO_PIN_0;
GPIO_InitStruct.Mode = GPIO_MODE_EVT_RISING;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

/*Configure GPIO pins : PA6 PA7 */
GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
GPIO_InitStruct.Alternate = GPIO_AF3_TSC;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

/*Configure GPIO pins : PB0 PB1 */
GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
GPIO_InitStruct.Alternate = GPIO_AF3_TSC;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

/*Configure GPIO pins : PB10 PB11 */
GPIO_InitStruct.Pin = GPIO_PIN_10|GPIO_PIN_11;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
GPIO_InitStruct.Alternate = GPIO_AF1_I2C2;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

/*Configure GPIO pins : PB13 PB14 PB15 */
GPIO_InitStruct.Pin = GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
GPIO_InitStruct.Alternate = GPIO_AF0_SPI2;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

}

mantishell 发表于 2015-1-5 21:08:37

mantishell 发表于 2015-1-5 15:05
/* Includes ------------------------------------------------------------------*/
#include "stm32f0xx ...

为了在stm32 nucleo里也能使用printf函数，现在实现如下函数：
添加如下代码：
#include "stdio.h" //为了使用FILE
int fputc(int ch,FILE *f)
{
USART2->TDR = ch;
while(!(USART2->ISR & (1<<6)));//当未发送完成，则需要等待
return ch;
}

然后在自己的函数就可以使用printf函数了。
eg：printf（“hello\n”）；

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第一个rs232串口打印程序