RT-Thread-【英飞凌开发板模块评测任务大挑战】英飞凌 PSOC6上的USBD实践RT-Thread问答社区

【英飞凌开发板模块评测任务大挑战】英飞凌 PSOC6上的USBD实践

发布于 2023-04-27 20:17:00 浏览：731 订阅该版

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# 前言
本文介绍基于Modus ToolBox自动创建Demo工程,演示HID设备功能,以评估USBD模块。
# 模块介绍
参考《Infineon-PSoC_6_MCU_CY8C6xx8_CY8C6xxA_Architecture_Technical_Reference_Manual_(TRM)-AdditionalTechnicalInformation-v08_00-EN.pdf》的33. Universal Serial Bus (USB) Device Mode
PSoC 6 MCU 提供了一个USB2.0全速设备接口。具备一下特征:
- USB2.0全速
- 8个数据端点和一个控制端点
- 512B共享FIFO
- 控制端点专用的8字节存储
- 支持控制,中断,批量，同步传输
- 支持总线和自供电
- 支持USB挂起以降低功耗
- 支持
无DMA，手动DMA模式 最大512字节的包
自动DMA模式 同步传输最大1023自己的包
- 带22欧终端电阻和1.5k上拉电阻
- 支持USB2.0 LPM
框图如下

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230427/65e731261d1a7c8d6210d75483b0774b.png.webp)

# 寄存器
参考《Infineon-PSoC_6_MCU_CY8C62x8_CY8C62xA_Registers_Technical_Reference_Manual-AdditionalTechnicalInformation-v06_00-EN.pdf》的21 USB Registers

# 离线模式创建工程
1.安装Modus Toolbox建议从Infineon Developer Center Launcher安装,直接下载的话比较慢。
2.果在线从github拉取,需要配置C:\Windows\System32\drivers\etc\hosts后添加一行185.199.108.133 raw.githubusercontent.com 否则会提示不能访问raw.githubusercontent.com
3.如果修改了Modus Toolbox默认安装路径的话需要设置环境变量
CY_TOOLS_PATHS为安装路径D:/ModusToolbox/tools_3.0 注意斜杠方向为左斜杠
4.从以下地址下载离线包,在线git拉取基本都会失败
https://softwaretools.infineon.com/tools/com.ifx.tb.tool.modustoolboxofflinecontentpackage

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230427/3334bca77ab309d19486cf6505e58bca.png.webp)
5.配置离线包
将上述下载内容解压到%USERPROFILE%/.modustoolbox目录下
只有.modustoolbox/offline文件夹,其他之前在线模式已经下载的内容都要删掉。
新建系统环境变量CY_GETLIBS_OFFLINE=true
6.创建工程
离线的方式创建工程
参考
https://community.infineon.com/t5/Resource-Library/ModusToolbox-Offline-Libraries/ta-p/252265

打开Modus ToolBox
File->New->ModusToolbox Applacation->

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230427/e5fb1d68ae3fb8bb21e5155698c3d7b3.png.webp)

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230427/3d92bac6b1ac6245232310257f8374bc.png.webp)

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230427/219b9ef0bde5a2fbe7328084d4a69920.png.webp)

# 测试

双击打开
D:\BOARD\infineonPSOC62\usb\USB_HID_Generic\USB_HID_Generic.cprj

另外需要先安装Cypress.PSoC6_DFP.1.2.0.pack包。
可以参考文章https://club.rt-thread.org/ask/article/4081c0c5c46e58dd.html

修改设备

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230427/a29b9ff51a63f73f67a42113a99ab135.png.webp)

Pre_Include_Global.h中注释掉`#define CY_SUPPORTS_DEVICE_VALIDATION`

`#define CY_TARGET_DEVICE CY8C624ABZI_S2D44`
改为`#define CY_TARGET_DEVICE CY8C624ABZI_S2D44`
`#define CY_TARGET_DEVICE CY8C624ALQI_S2D42`

报以下错误

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230427/299b3569d61f52f34d520e4a32f2edb8.png.webp)
按如下设置

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230427/2abe105d00d4cd31b0bf7778732de3f0.png.webp)

设置仿真器

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230427/2169f7feaa30a409db1f9be8525d5c58.png.webp)

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230427/8ca0fbdc5d93c245bc1e9f5426aec3c8.png.webp)

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230427/8d8db4ca6116dafa2168d1d3d15c6fc4.png.webp)

下载运行
卡在了WCO初始化

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230427/141f92cde5e8647ec84a1dfe811b0530.png.webp)
这是因为板子上没有WCO的32.768Khz时钟
所以cycfg_system.c中注释掉//#define CY_CFG_SYSCLK_WCO_ENABLED 1
板子上也没有外接ECO
从手册上看到时钟树,只能使用IMO作为系统时钟源，

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230427/85852ce12d38430d569c13b385618265.png.webp)
修改#define CY_CFG_SYSCLK_CLKBAK_SOURCE CY_SYSCLK_BAK_IN_WCO
为#define CY_CFG_SYSCLK_CLKBAK_SOURCE CY_SYSCLK_BAK_IN_ILO
全部选择IMO作为时钟源

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230427/b1a294b100f09b04cba3370df50052d5.png.webp)

接上USB线到PC,运行程序测试可以看到多了USB输入设备

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230427/5a2a304872759f3a2f879ae55c766451.png.webp)

# 调试
从https://github.com/OpenAcousticDevices/USB-HID-Tool
下载HID调试工具

进入USB-HID-Tool\bin\windows目录 右键打开终端
输入./usbhidtool.exe 0x04B4 0xE17E 4 0xDE 0xAD 0xBE 0xEF
其中0x04B4 0xE17E是设备的VID和PID, 发送4个字节给设备(实际发送64字节剩余的补0),设备原样返回收到的数据

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230427/60ccfb1d66f80135e33eb31a397e9aa4.png.webp)
以上结合仿真就可以进行调试了。

# 代码介绍
代码框架如下
使用了usbdev设备驱动

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230427/66ddb664c9ce7271af6d3e6cbbc566c9.png.webp)

详见main函数
```
int main(void)
{
    cy_rslt_t result;
    cy_en_usb_dev_ep_state_t ep_state;
    uint32_t count;
    uint32_t read_count;

/* Initialize the device and board peripherals */
    result = cybsp_init() ;
    if (result != CY_RSLT_SUCCESS)
    {
        CY_ASSERT(0);
    }

/* Enable global interrupts */
    __enable_irq();

/* Initialize the User LED */
    cyhal_gpio_init((cyhal_gpio_t) CYBSP_USER_LED, CYHAL_GPIO_DIR_OUTPUT, CYHAL_GPIO_DRIVE_STRONG, CYBSP_LED_STATE_OFF);

/* Initialize the USB device */
    Cy_USB_Dev_Init(CYBSP_USBDEV_HW, &CYBSP_USBDEV_config, &usb_drvContext, 
                    &usb_devices[0], &usb_devConfig, &usb_devContext);

/* Initialize the HID Class */
    Cy_USB_Dev_HID_Init(&usb_hidConfig, &usb_hidContext, &usb_devContext);

/* Initialize the USB interrupts */
    Cy_SysInt_Init(&usb_high_interrupt_cfg,   &usb_high_isr);
    Cy_SysInt_Init(&usb_medium_interrupt_cfg, &usb_medium_isr);
    Cy_SysInt_Init(&usb_low_interrupt_cfg,    &usb_low_isr);

/* Enable the USB interrupts */
    NVIC_EnableIRQ(usb_high_interrupt_cfg.intrSrc);
    NVIC_EnableIRQ(usb_medium_interrupt_cfg.intrSrc);
    NVIC_EnableIRQ(usb_low_interrupt_cfg.intrSrc);

/* Make device appear on the bus. This function call is blocking, 
     * it waits till the device enumerates 
     */
    Cy_USB_Dev_Connect(true, CY_USB_DEV_WAIT_FOREVER, &usb_devContext);

/* Turn on User LED after enumeration */
    cyhal_gpio_write(CYBSP_USER_LED1, CYBSP_LED_STATE_ON);

/* Enable OUT endpoint to receive data from host */
    Cy_USB_Dev_StartReadEp(USB_OUT_ENDPOINT, &usb_devContext);

for(;;)
    {
        cyhal_system_sleep();

/* Read the OUT Endpoint state */
        ep_state = Cy_USBFS_Dev_Drv_GetEndpointState(CYBSP_USBDEV_HW, 
                                                     USB_OUT_ENDPOINT, 
                                                     &usb_drvContext);

/* Check if any data from USB host is ready to be read */
        if (ep_state == CY_USB_DEV_EP_COMPLETED)
        {
            /* Turn off User LED when data is received */
            cyhal_gpio_write(CYBSP_USER_LED1, CYBSP_LED_STATE_OFF);

/* Check how many bytes are available to read */
            count = Cy_USB_Dev_GetEpNumToRead(USB_OUT_ENDPOINT, &usb_devContext);

/* Copy data to the application usb buffer */
            Cy_USB_Dev_ReadEpBlocking(USB_OUT_ENDPOINT, usb_buffer, 
                                      count, &read_count, 
                                      CY_USB_DEV_WAIT_FOREVER, &usb_devContext);

/* Write data back to the host */
            Cy_USB_Dev_WriteEpBlocking(USB_IN_ENDPOINT, usb_buffer, read_count, 
                                       CY_USB_DEV_WAIT_FOREVER, &usb_devContext);

/* Enable OUT endpoint to receive data from host again */
            Cy_USB_Dev_StartReadEp(USB_OUT_ENDPOINT, &usb_devContext);

/* Turn on User LED after data is sent */
            cyhal_gpio_write(CYBSP_USER_LED1, CYBSP_LED_STATE_ON);
        }
    }
}

/***************************************************************************
* Function Name: usb_high_isr
********************************************************************************
* Summary:
*  This function process the high priority USB interrupts.
*
***************************************************************************/
static void usb_high_isr(void)
{
    /* Call interrupt processing */
    Cy_USBFS_Dev_Drv_Interrupt(CYBSP_USBDEV_HW, 
                               Cy_USBFS_Dev_Drv_GetInterruptCauseHi(CYBSP_USBDEV_HW), 
                               &usb_drvContext);
}

/***************************************************************************
* Function Name: usb_medium_isr
********************************************************************************
* Summary:
*  This function process the medium priority USB interrupts.
*
***************************************************************************/
static void usb_medium_isr(void)
{
    /* Call interrupt processing */
    Cy_USBFS_Dev_Drv_Interrupt(CYBSP_USBDEV_HW, 
                               Cy_USBFS_Dev_Drv_GetInterruptCauseMed(CYBSP_USBDEV_HW), 
                               &usb_drvContext);
}

/***************************************************************************
* Function Name: usb_low_isr
********************************************************************************
* Summary:
*  This function process the low priority USB interrupts.
*
**************************************************************************/
static void usb_low_isr(void)
{
    /* Call interrupt processing */
    Cy_USBFS_Dev_Drv_Interrupt(CYBSP_USBDEV_HW, 
                               Cy_USBFS_Dev_Drv_GetInterruptCauseLo(CYBSP_USBDEV_HW), 
                               &usb_drvContext);
}
```
# 总结
以上通过一个HID设备实例演示了PSOC的USBD模块, step by
 step通过创建工程和测试调试。得益于Modus ToolBox的自动创建Demo 工程我们可以很快速的进行模块评估,基于Demo进行应用开发。