【雅特力AT32WB415系列蓝牙BLE 5.0 MCU】USB CDC 串口Printf打印调试信息

KING_阿飞 发表于 2022-8-2 17:08

<div class='showpostmsg'> 本帖最后由 KING_阿飞于 2022-8-3 11:49 编辑

【雅特力AT32WB415系列蓝牙BLE 5.0 MCU】USB CDC 串口Printf打印调试信息

 

很荣幸能获得雅特力AT32WB415系列蓝牙BLE 5.0 MCU的评测机会，为此按照我以前的评测的习惯，附上我的<a href="https://github.com/kings669/My_AT32WB415_Demo" target="_blank">Github</a>：，所有评测代码均开源分享。

如果因为网络问题无法进入Github可以在Gitee中下载，可能会存在没有及时更新。Gitee：<a href="https://gitee.com/king-a-fei/My_AT32WB415_Demo">My_AT32WB415_Demo: 雅特力科技AT32WB415系列学习，从各个外设入手，学习各个功能。 (gitee.com)</a>

一、USB协议移植

    关于USB的协议大家可以去USB的官网：<a href="https://usb.org/">Front Page | USB-IF</a>

    我们主要是完成USB CDC 虚拟串口的移植，主要有以下几个文件：



    库文件在官网的资料包中就有，没有找到可以去我仓库复制；官网做了一个适配这个MCU的配置文件，usb_conf.h

<pre>
<code class="language-cpp">/**
**************************************************************************
* <a href="home.php?mod=space&uid=1307177" target="_blank">@File </a> usb_conf.h
* <a href="home.php?mod=space&uid=252314" target="_blank">@version </a> v2.0.2
* <a href="home.php?mod=space&uid=311857" target="_blank">@date </a> 2022-06-28
* <a href="home.php?mod=space&uid=159083" target="_blank">@brief </a> usb config header file
**************************************************************************
* Copyright notice & Disclaimer
*
* The software Board Support Package (BSP) that is made available to
* download from Artery official website is the copyrighted work of Artery.
* Artery authorizes customers to use, copy, and distribute the BSP
* software and its related documentation for the purpose of design and
* development in conjunction with Artery microcontrollers. Use of the
* software is governed by this copyright notice and the following disclaimer.
*
* THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
* GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
* TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
* STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
* INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
*
**************************************************************************
*/

/* define to prevent recursive inclusion -------------------------------------*/
#ifndef __USB_CONF_H
#define __USB_CONF_H

#ifdef __cplusplus
extern "C" {
#endif

#include "at32wb415_usb.h"
#include "at32wb415.h"
#include "stdio.h"

/** @addtogroup AT32WB415_periph_examples
* @{
*/

/** @addtogroup 415_USB_device_vcp_loopback
* @{
*/

/**
* @brief enable usb device mode
*/
#define USE_OTG_DEVICE_MODE

/**
* @brief enable usb host mode
*/
/* #define USE_OTG_HOST_MODE */

#define USB_ID 0
#define OTG_CLOCK CRM_OTGFS1_PERIPH_CLOCK
#define OTG_IRQ OTGFS1_IRQn
#define OTG_IRQ_HANDLER OTGFS1_IRQHandler
#define OTG_WKUP_IRQ OTGFS1_WKUP_IRQn

#define OTG_WKUP_HANDLER OTGFS1_WKUP_IRQHandler
#define OTG_WKUP_EXINT_LINE EXINT_LINE_18

#define OTG_PIN_GPIO GPIOA
#define OTG_PIN_GPIO_CLOCK CRM_GPIOA_PERIPH_CLOCK

#define OTG_PIN_SOF_GPIO GPIOA
#define OTG_PIN_SOF_GPIO_CLOCK CRM_GPIOA_PERIPH_CLOCK
#define OTG_PIN_SOF GPIO_PINS_8

/**
* @brief usb device mode config
*/
#ifdef USE_OTG_DEVICE_MODE
/**
* @brief usb device mode fifo
*/
/* otg1 device fifo */
#define USBD_RX_SIZE 128
#define USBD_EP0_TX_SIZE 24
#define USBD_EP1_TX_SIZE 20
#define USBD_EP2_TX_SIZE 20
#define USBD_EP3_TX_SIZE 20

/**
* @brief usb endpoint max num define
*/
#ifndef USB_EPT_MAX_NUM
#define USB_EPT_MAX_NUM 4
#endif
#endif

/**
* @brief usb host mode config
*/
#ifdef USE_OTG_HOST_MODE
#ifndef USB_HOST_CHANNEL_NUM
#define USB_HOST_CHANNEL_NUM 8
#endif

/**
* @brief usb host mode fifo
*/
/* otg1 host fifo */
#define USBH_RX_FIFO_SIZE 128
#define USBH_NP_TX_FIFO_SIZE 96
#define USBH_P_TX_FIFO_SIZE 96
#endif

/**
* @brief usb sof output enable
*/
/* #define USB_SOF_OUTPUT_ENABLE */

#define USB_VBUS_IGNORE

/**
* @brief usb low power wakeup handler enable
*/
/* #define USB_LOW_POWER_WAKUP */

void usb_delay_ms(uint32_t ms);
void usb_delay_us(uint32_t us);
/**
* @}
*/

/**
* @}
*/
#ifdef __cplusplus
}
#endif

#endif
</code></pre>

二、移植过程中的问题

    在移植过程中，我代码卡在了B处，这里一看就是没有中断处理函数，应该是OTGFS1_IRQHandler这个没有，我们经过查找，官方将其宏定义了，我们要重新给他写一下。

 



<pre>
<code class="language-cpp">/**
* @briefthis function handles otgfs interrupt.
* @paramnone
* @retval none
*/
void OTG_IRQ_HANDLER(void)
{
usbd_irq_handler(&otg_core_struct);
}
</code></pre>

 然后根据上篇文章的经验，我们还需要再写一个延时函数

<pre>
<code class="language-cpp">void usb_delay_ms(uint32_t ms){
vTaskDelay(ms);
}
</code></pre>

编写USB CDC 的Printf

<pre>
<code class="language-cpp">//printf redefine
void usb_printf(const char *fmt,...)
{
static va_list ap;
uint16_t len = 0;

va_start(ap, fmt);

len = vsprintf((char *)usb_buf, fmt, ap);

va_end(ap);

/* send data to host */
if(usb_vcp_send_data(&otg_core_struct.dev, usb_buf, len) == SUCCESS)
{
 return;
}
}</code></pre>

 

<pre>
<code class="language-cpp">/**
* @briefusb 48M clock select
* @paramclk_s:USB_CLK_HICK, USB_CLK_HEXT
* @retval none
*/
void usb_clock48m_select(usb_clk48_s clk_s)
{
switch(system_core_clock)
{
 /* 48MHz */
 case 48000000:
 crm_usb_clock_div_set(CRM_USB_DIV_1);
 break;

 /* 72MHz */
 case 72000000:
 crm_usb_clock_div_set(CRM_USB_DIV_1_5);
 break;

 /* 96MHz */
 case 96000000:
 crm_usb_clock_div_set(CRM_USB_DIV_2);
 break;

 /* 120MHz */
 case 120000000:
 crm_usb_clock_div_set(CRM_USB_DIV_2_5);
 break;

 /* 144MHz */
 case 144000000:
 crm_usb_clock_div_set(CRM_USB_DIV_3);
 break;

 default:
 break;
}
}
</code></pre>

有这个USB串口调试也挺方便的，现在是有一个板载的AT-LINK暂时还看不到它的价值，之后如果实际使用的话，它的价值就大了。

三、效果展示

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lugl4313820 发表于 2022-8-2 18:45

感谢楼主的分享，补充了中断函数，USB调试各种波特率都可以自适应吧？

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【雅特力AT32WB415系列蓝牙BLE 5.0 MCU】USB CDC 串口Printf打印调试信息