RT-Thread-【国产MCU移植】AT32 BSP 完善RT-Thread问答社区

【国产MCU移植】AT32 BSP 完善

发布于 2021-08-25 10:52:48 浏览：3452 订阅该版

[tocm]

近期完善了一下AT32 bsp 主要有
1，修复了使用`scons -- dist`生成工程后无法使用menuconfig问题
2，开启RT_USING_SDIO时同时开启`RT_USING_DFS`解决报错
3，工程默认使用板载ATLINK
4，RTC升级至2.0（之前rtc驱动已编译不过，升级后测试正常使用）
问题1很简单，AT32自己写了sdk_dist.py
```c
# BSP dist function
def dist_do_building(BSP_ROOT, dist_dir):
    from mkdist import bsp_copy_files
    import rtconfig

print("=> copy at32 bsp library")
    library_dir = os.path.join(dist_dir, 'Libraries')
    library_path = os.path.join(os.path.dirname(BSP_ROOT), 'Libraries')
    bsp_copy_files(os.path.join(library_path, rtconfig.BSP_LIBRARY_TYPE),
                   os.path.join(library_dir, rtconfig.BSP_LIBRARY_TYPE))

print("=> copy bsp drivers")
    bsp_copy_files(os.path.join(library_path, 'rt_drivers'), os.path.join(library_dir, 'rt_drivers'))
    shutil.copyfile(os.path.join(library_path, 'Kconfig'), os.path.join(library_dir, 'Kconfig'))
```
但是复制library之后并没有更改Kconfig中Libraries/Kconfig目录，
导致使用scons -- dist之后Libraries/Kconfig找不到，解决办法就是在后面加上
```c
    # change RTT_ROOT in Kconfig
    if not os.path.isfile(os.path.join(dist_dir, 'Kconfig')):
        return

with open(os.path.join(dist_dir, 'Kconfig'), 'r') as f:
        data = f.readlines()
    with open(os.path.join(dist_dir, 'Kconfig'), 'w') as f:
        found = 0
        for line in data:
            if line.find('RTT_ROOT') != -1:
                found = 1
            if line.find('../Libraries') != -1 and found:
                position = line.find('../Libraries')
                line = line[0:position] + 'Libraries/Kconfig"\n'
                found = 0
            f.write(line)
```
问题2是我使用SDIO编译发现报错，原因是DFS未开启，修改bord/kconfig
```
    menuconfig BSP_USING_SDIO
        bool "Enable SDIO"
        default n
        select RT_USING_SDIO
        select RT_USING_DFS
        if BSP_USING_SDIO
            config BSP_USING_SDIO1
                bool "Enable SDIO1"
                default n
        endif
```

使用SDIO也会开启DFS
问题3只是因为工程默认使用JLINK，但是板载ATLING很方便，顺便改了
问题4是由于rtt升级了rtc框架导致原有驱动无法编译，
```c
static time_t get_rtc_timestamp(void)
{
#ifdef SOC_SERIES_AT32F415
    struct tm tm_new;
    ERTC_TimeType ERTC_TimeStruct;
    ERTC_DateType ERTC_DateStruct;

ERTC_GetTimeValue(ERTC_Format_BIN, &ERTC_TimeStruct);
    ERTC_GetDateValue(ERTC_Format_BIN, &ERTC_DateStruct);
    tm_new.tm_sec  = ERTC_TimeStruct.ERTC_Seconds;
    tm_new.tm_min  = ERTC_TimeStruct.ERTC_Minutes;
    tm_new.tm_hour = ERTC_TimeStruct.ERTC_Hours;
    tm_new.tm_mday = ERTC_DateStruct.ERTC_Date;
    tm_new.tm_mon  = ERTC_DateStruct.ERTC_Month - 1;
    tm_new.tm_year = ERTC_DateStruct.ERTC_Year + 100;

LOG_D("get rtc time.");
    return timegm(&tm_new);
#else
    return RTC_GetCounter();
#endif
}

static rt_err_t set_rtc_time_stamp(time_t time_stamp)
{
#ifdef SOC_SERIES_AT32F415
    ERTC_TimeType  ERTC_TimeStructure;
    ERTC_DateType  ERTC_DateStructure;

struct tm *p_tm;

p_tm = gmtime(&time_stamp);
    if (p_tm->tm_year < 100)
    {
        return -RT_ERROR;
    }
    ERTC_TimeStructure.ERTC_Seconds = p_tm->tm_sec ;
    ERTC_TimeStructure.ERTC_Minutes = p_tm->tm_min ;
    ERTC_TimeStructure.ERTC_Hours   = p_tm->tm_hour;
    ERTC_DateStructure.ERTC_Date    = p_tm->tm_mday;
    ERTC_DateStructure.ERTC_Month   = p_tm->tm_mon + 1 ;
    ERTC_DateStructure.ERTC_Year    = p_tm->tm_year - 100;
    ERTC_DateStructure.ERTC_WeekDay = p_tm->tm_wday + 1;

if (ERTC_SetTimeValue(ERTC_Format_BIN, &ERTC_TimeStructure) != SUCCESS)
    {
        return -RT_ERROR;
    }
    if (ERTC_SetDateValue(ERTC_Format_BIN, &ERTC_DateStructure) != SUCCESS)
    {
        return -RT_ERROR;
    }
#else
    /* Set the RTC counter value */
    RTC_SetCounter(time_stamp);
    /* Wait until last write operation on RTC registers has finished */
    RTC_WaitForLastTask();
#endif /* SOC_SERIES_AT32F415 */
    LOG_D("set rtc time.");
#ifdef SOC_SERIES_AT32F415
    ERTC_WriteBackupRegister(ERTC_BKP_DT0, BKUP_REG_DATA);
#else
    BKP_WriteBackupReg(BKP_DT1, BKUP_REG_DATA);
#endif
    return RT_EOK;
}

static rt_err_t rt_rtc_config(void)
{
#if defined (SOC_SERIES_AT32F415)
    ERTC_InitType ERTC_InitStructure;
#endif
    /* Allow access to BKP Domain */
    PWR_BackupAccessCtrl(ENABLE);

#ifdef SOC_SERIES_AT32F415
  #ifdef BSP_RTC_USING_LSI
    RCC_ERTCCLKConfig(RCC_ERTCCLKSelection_LSI);
    RCC_ERTCCLKCmd(ENABLE);
  #else
    RCC_ERTCCLKConfig(RCC_ERTCCLKSelection_LSE);
    RCC_ERTCCLKCmd(ENABLE);
  #endif /* BSP_RTC_USING_LSI */
    /* Wait for ERTC APB registers synchronisation */
    ERTC_WaitForSynchro();
#else
  #ifdef BSP_RTC_USING_LSI
    RCC_RTCCLKConfig(RCC_RTCCLKSelection_LSI);
    RCC_RTCCLKCmd(ENABLE);
  #else
    RCC_RTCCLKConfig(RCC_RTCCLKSelection_LSE);
    RCC_RTCCLKCmd(ENABLE);
  #endif /* BSP_RTC_USING_LSI */
    /* Wait for RTC registers synchronization */
    RTC_WaitForSynchro();
    /* Wait until last write operation on RTC registers has finished */
    RTC_WaitForLastTask();
#endif /* SOC_SERIES_AT32F415 */

#ifdef SOC_SERIES_AT32F415
    if (ERTC_ReadBackupRegister(BKP_DT1)!= BKUP_REG_DATA)
#else
    if (BKP_ReadBackupReg(BKP_DT1) != BKUP_REG_DATA)
#endif
    {
        LOG_I("RTC hasn't been configured, please use <date> command to config.");
#ifdef SOC_SERIES_AT32F415
        /* Configure the ERTC data register and ERTC prescaler */
        ERTC_InitStructure.ERTC_AsynchPrediv = 0x7F;
        ERTC_InitStructure.ERTC_SynchPrediv = 0xFF;
        ERTC_InitStructure.ERTC_HourFormat = ERTC_HourFormat_24;
        ERTC_Init(&ERTC_InitStructure);
#else
        /* Set RTC prescaler: set RTC period to 1sec */
        RTC_SetDIV(32767);
        /* Wait until last write operation on RTC registers has finished */
        RTC_WaitForLastTask();
#endif
    }
    return RT_EOK;
}

static rt_err_t at32_rtc_init(void)
{
#if defined (SOC_SERIES_AT32F415)
    RCC_APB1PeriphClockCmd(RCC_APB1PERIPH_PWR, ENABLE);
#else
    RCC_APB1PeriphClockCmd(RCC_APB1PERIPH_PWR | RCC_APB1PERIPH_BKP, ENABLE);
#endif

#ifdef BSP_RTC_USING_LSI
    RCC_LSICmd(ENABLE);
    while(RCC_GetFlagStatus(RCC_FLAG_LSISTBL) == RESET);
#else
    PWR_BackupAccessCtrl(ENABLE);
    RCC_LSEConfig(RCC_LSE_ENABLE);
    while(RCC_GetFlagStatus(RCC_FLAG_LSESTBL) == RESET);
#endif /* BSP_RTC_USING_LSI */
    if (rt_rtc_config() != RT_EOK)
    {
        LOG_E("rtc init failed.");
        return -RT_ERROR;
    }

return RT_EOK;
}

static rt_err_t at32_rtc_get_secs(void *args)
{
    *(rt_uint32_t *)args = get_rtc_timestamp();
    LOG_D("RTC: get rtc_time %x\n", *(rt_uint32_t *)args);

return RT_EOK;
}

static rt_err_t at32_rtc_set_secs(void *args)
{
    rt_err_t result = RT_EOK;

if (set_rtc_time_stamp(*(rt_uint32_t *)args))
    {
        result = -RT_ERROR;
    }
    LOG_D("RTC: set rtc_time %x\n", *(rt_uint32_t *)args);

return result;
}

static const struct rt_rtc_ops at32_rtc_ops =
{
    at32_rtc_init,
    at32_rtc_get_secs,
    at32_rtc_set_secs,
    RT_NULL,
    RT_NULL,
    RT_NULL,
    RT_NULL,
};

static rt_rtc_dev_t at32_rtc_dev;

int rt_hw_rtc_init(void)
{
    rt_err_t result;
    at32_rtc_dev.ops = &at32_rtc_ops;
    result = rt_hw_rtc_register(&at32_rtc_dev, "rtc", RT_DEVICE_FLAG_RDWR,RT_NULL);
    if (result != RT_EOK)
    {
        LOG_E("rtc register err code: %d", result);
        return result;
    }
    LOG_D("rtc init success");
    return RT_EOK;
}

INIT_DEVICE_EXPORT(rt_hw_rtc_init);

```

按照2.0做一下修改即可，使用文档RTCdemo测试
![image.png](https://oss-club.rt-thread.org/uploads/20210825/4c43fabd01c21aed5fe8437893e436fd.png)

可以看到状态正常