【RA-Eco-RA4E2-64PIN-V1.0开发板试用】3、第一个程序增加adc(printf输出com9)

| 续前【RA-Eco-RA4E2-64PIN-V1.0开发板试用】2、第一个程序运行rasc.exe打开上次位置项目，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

在Stacks项中 点击Stacks->New Stack->Analog-> ADC(r_adc)。选择0，5通道。
选择p0，p5引脚。中断回调
增加代码

fsp_err_t err = FSP_SUCCESS;
unsigned char send_buff[100];
volatile bool uart_send_complete_flag = false;
volatile bool scan_complete_flag = false;

void adc_callback (adc_callback_args_t * p_args)
{
    FSP_PARAMETER_NOT_USED(p_args);
    scan_complete_flag = true;
} 

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;

}

在/*TODO:add your own code here */下增加：

err = R_SCI_UART_Open(&g_uart0_ctrl, &g_uart0_cfg);
    assert(FSP_SUCCESS == err);
   /* 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_0, &adc_data1);
           assert(FSP_SUCCESS == err);
           a0=(adc_data1/4095.0)*3.3;

           err =R_ADC_Read(&g_adc0_ctrl, ADC_CHANNEL_5, &adc_data1);
           assert(FSP_SUCCESS == err);
           a5=(adc_data1/4095.0)*3.3;

           R_BSP_SoftwareDelay (20, BSP_DELAY_UNITS_MILLISECONDS);
					     printf("a0:  %f\\n", a0);
					 printf("a5:  %f\\n", a5);
    /* USER CODE BEGIN 2 */
    printf("cpuclkfeq = %d\n", 48000000);
    printf("DWT->CYCCNT:  %d", DWT->CYCCNT);

    /* USER CODE END 2 */
    printf("[app info led off]");
    printf("[app info led on]");

编译：

linking...
Program Size: Code=8562 RO-data=1322 RW-data=8 ZI-data=10164  
FromELF: creating hex file...
After Build - User command #1: cmd /c "start "Renesas" /w cmd /c ""E:\lst\ra0e1-20240827154516\123\ra4e2\FSP_Project\rasc_launcher.bat" "E:\lst\ra0e1-20240827154516\123\ra4e2\FSP_Project\rasc_version.txt" -nosplash --launcher.suppressErrors --gensmartbundle --compiler ARMv6 --devicefamily ra "E:\lst\ra0e1-20240827154516\123\ra4e2\FSP_Project\configuration.xml" "E:\lst\ra0e1-20240827154516\123\ra4e2\FSP_Project\Objects\FSP_Project.axf" 2> "%TEMP%\rasc_stderr.out"""
".\Objects\FSP_Project.axf" - 0 Error(s), 50 Warning(s).
Build Time Elapsed:  00:00:30

下生成FSP_Project.hex文件。Renesas Flash Programmer下载重新设boot引脚reset com 口printf输出：

a0:  1.545641
             a5:  3.098535
                          [app info led off][app info led on]a0:  1.971941
                                     a5:  3.138828
                                                  [app info led off][app info led on]

com:
达到预期状态。 |