【RA4L1-SENSOR】电压检测器2。第一个程序adc(printf输出com9)

续前【RA4L1-SENSOR】电压检测器1。开箱+Keil环境搭建
STM32CUBEMX相似的KEIL初始化代码生成器** RA Smart Configurator软件可以在Github上的FSP 发布页面进行下载，下载地址:https://github.com/renesas/fsp/releases

| setup_fsp_v5_9_0_rasc_v2025-04.exe| 910 MB | Apr 21 2025 |

下载后安装：

安装完成后在Renesas\RA\eclipse目录中运行rasc.exe

配置keil项目

* 以及编译工具一路next就可以创建

可以进入配置也可以关闭在keil项目中配置.

产生目录:

打开lu.uvprojx

打开该文件配置的RA Smart Configurator

时钟图：内核：频率高达 80MHz=8M*10

开发板上的HSE晶振是8M的，因此需要在Clocks页面将 XTAL改为8MHz。同时还要改一下PLL倍率为x10，这样让工作频率在80MHz。

在Stacks项中 点击Stacks->New Stack->Connectivity -> UART （r_sci_uart）。

r_sci_uart配置如下;

中断回调

在bsp中设置heap为0x2000

保存并生成配置，在keil中用microlib

增加部分代码：

#include "stdio.h"

FSP_CPP_HEADER
void R_BSP_WarmStart(bsp_warm_start_event_t event);
FSP_CPP_FOOTER
fsp_err_t err = FSP_SUCCESS;
unsigned char send_buff[100];
volatile bool uart_send_complete_flag = false;
void user_uart_callback (uart_callback_args_t * p_args)
{
    if(p_args->event == UART_EVENT_TX_COMPLETE)
    {
        uart_send_complete_flag = true;
    }
}
int fputc(int ch, FILE *f)
{
//	USART_SendData(DEBUG_USART, (unsigned char) ch);
//	
//	while (!(DEBUG_USART->SR & USART_FLAG_TXE));
//	
//	return (ch);
	        err = R_SCI_UART_Write(&g_uart0_ctrl, (uint8_t *)&ch, 1);
        if(FSP_SUCCESS != err) __BKPT();
        while(uart_send_complete_flag == false){}
        uart_send_complete_flag = false;
        return ch;

}

/*******************************************************************************************************************//**
 * main() is generated by the RA Configuration editor and is used to generate threads if an RTOS is used.  This function
 * is called by main() when no RTOS is used.
 **********************************************************************************************************************/
void hal_entry(void)
{
    /* TODO: add your own code here */
	    /* Open the transfer instance with initial configuration. */
    err = R_SCI_UART_Open(&g_uart0_ctrl, &g_uart0_cfg);
    assert(FSP_SUCCESS == err);

while(1)



    {


    /* USER CODE BEGIN 2 */
    printf("Hello, i am %s\\\\n", "mculover666");
    printf("Test int: i = %d", 100);
    printf("Test float: i = %f", 1.234);
    printf("Test hex: i = 0x%2x",100);
    /* USER CODE END 2 */
    R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_01_PIN_04,BSP_IO_LEVEL_LOW );



    R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_01_PIN_03, BSP_IO_LEVEL_LOW);

    printf("[app info led off]");

    R_BSP_SoftwareDelay(500, BSP_DELAY_UNITS_MILLISECONDS);



    R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_01_PIN_04, BSP_IO_LEVEL_HIGH);



    R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_01_PIN_03, BSP_IO_LEVEL_HIGH);


    printf("[app info led on]");
    R_BSP_SoftwareDelay(500, BSP_DELAY_UNITS_MILLISECONDS);



    }

配置ADC

在Stacks项中 点击Stacks->New Stack->Analog -> adc （r_adc）。

配置AN025通道为引脚P510

增加代码

volatile bool scan_complete_flag = false;



voidadc_callback (adc_callback_args_t * p_args)



{



    FSP_PARAMETER_NOT_USED(p_args);



    scan_complete_flag = true;



}

在/*

TODO:

add your own code here */

下增加：

fsp_err_t err = FSP_SUCCESS;



    /*
Initializes the module. */



    err = R_ADC_Open(&g_adc0_ctrl,
&g_adc0_cfg);



    /*
Handle any errors. This function should be defined by the user. */



    assert(FSP_SUCCESS == err);



 /*
Enable channels. */



    err = R_ADC_ScanCfg(&g_adc0_ctrl,
&g_adc0_channel_cfg);



   
assert(FSP_SUCCESS == err);
double a0,a5;



    uint16_t adc_data1=0;



   
uint16_t adc_data2=0;

在while(1)中增加

/*
Enable scan triggering from ELC events. */



           (void) R_ADC_ScanStart(&g_adc0_ctrl);



           scan_complete_flag = false;



           while (!scan_complete_flag)



           {



               /*
Wait for callback to set flag. */



           }
err =R_ADC_Read(&g_adc0_ctrl, ADC_CHANNEL_25, &adc_data1);


           assert(FSP_SUCCESS == err);



           a0=(adc_data1/4095.0)*3.3;


printf("a0 = %f", a0);









           R_BSP_SoftwareDelay (20, BSP_DELAY_UNITS_MILLISECONDS);

编译：

linking...
Program Size: Code=6604 RO-data=680 RW-data=8 ZI-data=10336  
FromELF: creating hex file...
After Build - User command #1: cmd /c "start "Renesas" /w cmd /c ""E:\\lst\\ra0e1-20240827154516\\123\\new1\\FSP_Project\\rasc_launcher.bat" "E:\\lst\\ra0e1-20240827154516\\123\\new1\\FSP_Project\\rasc_version.txt" -nosplash --launcher.suppressErrors --gensmartbundle --compiler ARMv6 --devicefamily ra "E:\\lst\\ra0e1-20240827154516\\123\\new1\\FSP_Project\\configuration.xml"
"E:\\lst\\ra0e1-20240827154516\\123\\new1\\FSP_Project\\Objects\\FSP_Project.axf"
2> "%TEMP%\\rasc_stderr.out"""



".\\Objects\\FSP_Project.axf" - 0
Error(s), 47 Warning(s).



Build Time Elapsed:  00:00:33

烧Load ：

Load "E:\lst\ra4l1\RAL1_UART_LED\Objects\RAL1_UART_LED.axf"

Erase Done.

Programming Done.

Verify OK.

Application running ...

Flash Load finished at 15:12:06

reset

reset com 口printf输出：

Hello,
i am m                                              
culover666



          Test int: i = 100Test float: i =
1.234000Test hex: i = 0x64[app info                                               
led off][app info led on]a0: 
3.300000

达到预期状态。