MCU speed printf()

[mspenard603]

How can I output the current clock speed the MCU is setup for / running at? As the iMXRT1062 comes in Industrial and Consumer versions, and I'd like to state the clock speed right at boot.

[jeremyzhou · Accepted solution]

Hi,

Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
1） How can I output the current clock speed the MCU is set up for / running at?
-- In the SDK library, it provides the CLOCK_GetFreq() function to get the clock frequency for a specific clock name, and I've attached its code below.
Have a great day,
TIC

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[mspenard603]

Where's the code?

[jeremyzhou]

Hi,
Sorry, I forgot to attach the code before, and please check it below.

/*!
 * brief Gets the clock frequency for a specific clock name.
 *
 * This function checks the current clock configurations and then calculates
 * the clock frequency for a specific clock name defined in clock_name_t.
 *
 * param clockName Clock names defined in clock_name_t
 * return Clock frequency value in hertz
 */
uint32_t CLOCK_GetFreq(clock_name_t name)
{
    uint32_t freq;

    switch (name)
    {
        case kCLOCK_CpuClk:
        case kCLOCK_AhbClk:
            freq = CLOCK_GetAhbFreq();
            break;

        case kCLOCK_SemcClk:
            freq = CLOCK_GetSemcFreq();
            break;

        case kCLOCK_IpgClk:
            freq = CLOCK_GetIpgFreq();
            break;

        case kCLOCK_PerClk:
            freq = CLOCK_GetPerClkFreq();
            break;

        case kCLOCK_OscClk:
            freq = CLOCK_GetOscFreq();
            break;
        case kCLOCK_RtcClk:
            freq = CLOCK_GetRtcFreq();
            break;
        case kCLOCK_ArmPllClk:
            freq = CLOCK_GetPllFreq(kCLOCK_PllArm);
            break;
        case kCLOCK_Usb1PllClk:
            freq = CLOCK_GetPllFreq(kCLOCK_PllUsb1);
            break;
        case kCLOCK_Usb1PllPfd0Clk:
            freq = CLOCK_GetUsb1PfdFreq(kCLOCK_Pfd0);
            break;
        case kCLOCK_Usb1PllPfd1Clk:
            freq = CLOCK_GetUsb1PfdFreq(kCLOCK_Pfd1);
            break;
        case kCLOCK_Usb1PllPfd2Clk:
            freq = CLOCK_GetUsb1PfdFreq(kCLOCK_Pfd2);
            break;
        case kCLOCK_Usb1PllPfd3Clk:
            freq = CLOCK_GetUsb1PfdFreq(kCLOCK_Pfd3);
            break;
        case kCLOCK_Usb2PllClk:
            freq = CLOCK_GetPllFreq(kCLOCK_PllUsb2);
            break;
        case kCLOCK_SysPllClk:
            freq = CLOCK_GetPllFreq(kCLOCK_PllSys);
            break;
        case kCLOCK_SysPllPfd0Clk:
            freq = CLOCK_GetSysPfdFreq(kCLOCK_Pfd0);
            break;
        case kCLOCK_SysPllPfd1Clk:
            freq = CLOCK_GetSysPfdFreq(kCLOCK_Pfd1);
            break;
        case kCLOCK_SysPllPfd2Clk:
            freq = CLOCK_GetSysPfdFreq(kCLOCK_Pfd2);
            break;
        case kCLOCK_SysPllPfd3Clk:
            freq = CLOCK_GetSysPfdFreq(kCLOCK_Pfd3);
            break;
        case kCLOCK_EnetPll0Clk:
            freq = CLOCK_GetPllFreq(kCLOCK_PllEnet);
            break;
        case kCLOCK_EnetPll1Clk:
            freq = CLOCK_GetPllFreq(kCLOCK_PllEnet25M);
            break;
        case kCLOCK_AudioPllClk:
            freq = CLOCK_GetPllFreq(kCLOCK_PllAudio);
            break;
        case kCLOCK_VideoPllClk:
            freq = CLOCK_GetPllFreq(kCLOCK_PllVideo);
            break;
        default:
            freq = 0U;
            break;
    }

    return freq;
}

Have a great day,
TIC

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Note:
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- We are following threads for 7 weeks after the last post, later replies are ignored
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