[讨论] 【极海APM32F407 Tiny Board】2、开发环境搭建&串口printf打印

开发板支持KEIL MDK开发环境，从官网下载DFP安装包即可：

安装好后，就可以打开keil工程进行仿真调试了：

但是板载cmsis-dap调试器串口无法使用，只好使用外置的调试器了，在GPIO例子基础上增加串口打印功能：

/*!
 * [url=home.php?mod=space&uid=1307177]@File[/url] main.c
 *
 * [url=home.php?mod=space&uid=159083]@brief[/url] Main program body
 *
 * [url=home.php?mod=space&uid=252314]@version[/url] V1.0.2
 *
 * [url=home.php?mod=space&uid=311857]@date[/url] 2023-03-01
 *
 * [url=home.php?mod=space&uid=1020061]@attention[/url] *
 *  Copyright (C) 2021-2023 Geehy Semiconductor
 *
 *  You may not use this file except in compliance with the
 *  GEEHY COPYRIGHT NOTICE (GEEHY SOFTWARE PACKAGE LICENSE).
 *
 *  The program is only for reference, which is distributed in the hope
 *  that it will be useful and instructional for customers to develop
 *  their software. Unless required by applicable law or agreed to in
 *  writing, the program is distributed on an "AS IS" BASIS, WITHOUT
 *  ANY WARRANTY OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the GEEHY SOFTWARE PACKAGE LICENSE for the governing permissions
 *  and limitations under the License.
 */

/* Includes */
#include "main.h"
#include "Board.h"
#include "stdio.h"
#include "apm32f4xx_gpio.h"
#include "apm32f4xx_misc.h"
#include "apm32f4xx_usart.h"

#define DEBUG_USART  USART1

int fputc(int ch, FILE* f)
{
    /* send a byte of data to the serial port */
    USART_TxData(DEBUG_USART, (uint8_t)ch);

    /* wait for the data to be send */
    while (USART_ReadStatusFlag(DEBUG_USART, USART_FLAG_TXBE) == RESET);

    return (ch);
}


/** @addtogroup Examples
  @{
  */

/** @addtogroup GPIO_Toggle
  @{
  */

/** @defgroup GPIO_Toggle_Functions Functions
  @{
  */

/* Delay */
void Delay(uint32_t count);

/*!
 * @brief     Main program
 *
 * @param     None
 *
 * @retval    None
 */
int main(void)
{
		USART_Config_T usartConfigStruct;
	    /* USART configuration */
    USART_ConfigStructInit(&usartConfigStruct);
    usartConfigStruct.baudRate      = 115200;
    usartConfigStruct.mode          = USART_MODE_TX_RX;
    usartConfigStruct.parity        = USART_PARITY_NONE;
    usartConfigStruct.stopBits      = USART_STOP_BIT_1;
    usartConfigStruct.wordLength    = USART_WORD_LEN_8B;
    usartConfigStruct.hardwareFlow  = USART_HARDWARE_FLOW_NONE;

    /* COM1 init*/
    APM_MINI_COMInit(COM1, &usartConfigStruct);
	
    APM_MINI_LEDInit(LED2);
    APM_MINI_LEDInit(LED3);

    while (1)
    {
				printf("APM32F407 Test\r\n");
        Delay(0x2FFFFF);
        APM_MINI_LEDToggle(LED2);
        APM_MINI_LEDToggle(LED3);
    }
}

/*!
 * @brief     Delay
 *
 * @param     count:  delay count
 *
 * @retval    None
 */
void Delay(uint32_t count)
{
    volatile uint32_t delay = count;
    while(delay--);
}

/**@} end of group GPIO_Toggle_Functions */
/**@} end of group GPIO_Toggle */
/**@} end of group Examples */

顶起来~