[Renesas RA8D1 Review] Part 2: I/O Operation

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[Renesas RA8D1 Review] Part 2: I/O Operation [Copy link]

Renesas chips support a wide range of compilation environments, including mainstream KEIL, IAR, ARDUINO, RTOS, etc. This evaluation uses Renesas' self-developed e2 for the following reasons: official recommendation, rich functions, strong adaptability, standardized management, and ease of use in later projects.

e2 studio installation:

e2 studio download link: https://www.renesas.cn/cn/zh/software-tool/e2studio-information-ra-family

Flexible Software Package FSP (Flexible Software Package) installation link: https://www.renesas.cn/cn/zh/software-tool/flexible-software-package-fsp

Step 1: Install the compiler software

1. Install e2 studio first, and follow the recommended method to install it step by step. After the installation is complete, open e2 studio and create a new project. It will prompt that you need to install FSP to select the corresponding chip

2. Install FSP again

3. Create a new project and select R7FA8D1BHECBD. For the reason why you choose this, please refer to the schematic diagram in the previous article (the chip model is noted in U1 of the schematic diagram)

4. The new project is completed, the interface

Step 2: FSP initialization configuration I/O pins

1. As can be seen from the schematic diagram, the development board has a built-in User LED, and the pin that controls the LED is PA01

But it seems a bit complicated to configure PA01 from e2 studio. I can't find the relevant functions for PA configuration. Does PA correspond to P10 ?

2. Configure I/O pin characteristics

Step 3: Compile program to control I/O output

1. Register controls the output of PA01

    R_PMISC->PWPR = 0;                               ///< Clear BOWI bit - writing to PFSWE bit enabled
    R_PMISC->PWPR = 1U << BSP_IO_PWPR_PFSWE_OFFSET;  ///< Set PFSWE bit - writing to PFS register enabled

    /* LED：配置引脚 PA01 对应的PFS寄存器 */
    R_PFS->PORT[BSP_IO_PORT_10_PIN_01>>8].PIN[BSP_IO_PORT_10_PIN_01 & 0xFF].PmnPFS =
        IOPORT_CFG_PORT_DIRECTION_OUTPUT | IOPORT_CFG_PORT_OUTPUT_LOW;



    while(1)
    {

       /* 或者也可以这样用位异或操作来翻转LED1 */
       R_PORT10->PODR ^= 1<<(BSP_IO_PORT_01_PIN_00 & 0xFF);
       R_BSP_SoftwareDelay(1000, BSP_DELAY_UNITS_MILLISECONDS);
    }

2. Call the FSP library to control the output of PA01

  while(1)
    {
      
      
    R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_10_PIN_01, BSP_IO_LEVEL_LOW); //LED1 亮
    R_BSP_SoftwareDelay(1, BSP_DELAY_UNITS_SECONDS); //延时1秒

    R_IOPORT_PinWrite(&g_ioport_ctrl, BSP_IO_PORT_10_PIN_01, BSP_IO_LEVEL_HIGH); //LED1 灭
    R_BSP_SoftwareDelay(1, BSP_DELAY_UNITS_SECONDS); //延时1秒

    }

Step 4: Observe the display effect

1. No program development board is burned:

2. Burn the program development board: