LPC844 Clock Settings ended up in Hard Fault

senge-esca — Mon, 04 Dec 2023 17:00:16 GMT

void BOARD_InitBootClocks(void)

{

/*!< Set up the clock sources */

/*!< Set up FRO */

POWER_DisablePD(kPDRUNCFG_PD_FRO_OUT); /*!< Ensure FRO is on */

POWER_DisablePD(kPDRUNCFG_PD_FRO); /*!< Ensure FRO is on */

CLOCK_SetFroOscFreq(kCLOCK_FroOscOut30M); /*!< Set up FRO freq */

CLOCK_SetFroOutClkSrc(kCLOCK_FroSrcFroOsc); /*!< Set FRO clock source */

POWER_DisablePD(kPDRUNCFG_PD_SYSOSC); /*!< Ensure Main osc is on */

CLOCK_Select(kEXT_Clk_From_SysOsc); /*!<select external clock source to sys_osc */

clock_sys_pll_t config;

config.src = kCLOCK_SysPllSrcFroDiv; /*!< select FRO_div for SYSPLL */

config.targetFreq = 30000000U; /*!< set pll target freq */

CLOCK_InitSystemPll(&config); /*!< set parameters */

CLOCK_SetMainClkSrc(kCLOCK_MainClkSrcFro); /*!< select fro for main clock */

CLOCK_Select(kCLKOUT_From_Fro); /*!< select FRO for CLKOUT */

CLOCK_Select(kSCT_Clk_From_Fro); /*!< select FRO for SCT */

CLOCK_Select(kADC_Clk_From_Fro); /*!< select FRO for ADC */

CLOCK_Select(kUART0_Clk_From_Fro_Div); /*!< select FRO_DIV for UART0 */

CLOCK_Select(kI2C0_Clk_From_Fro_Div); /*!< select FRO_DIV for I2C0 */

CLOCK_Select(kI2C1_Clk_From_Fro_Div); /*!< select FRO_DIV for I2C1 */

CLOCK_SetCoreSysClkDiv(1U);

CLOCK_SetClkDivider(kCLOCK_DivClkOut, 1U); /*!< set CLOCKOUT div */

CLOCK_SetClkDivider(kCLOCK_DivSctClk, 1U); /*!< set SCT clock div */

CLOCK_SetClkDivider(kCLOCK_DivAdcClk, 10U); /*!< set ADC clock div */

/*!< Set SystemCoreClock variable. */

 SystemCoreClock = BOARD_BOOTCLOCKRUN_CORE_CLOCK;

}

Why the function:
CLOCK_SetFroOutClkSrc(kCLOCK_FroSrcFroOsc); /*!< Set FRO clock source */

somethimes ended up in a Hard Fault? It works perfectly in 50% of cases.

Re: LPC844 Clock Settings ended up in Hard Fault

Alice_Yang — Tue, 05 Dec 2023 02:07:48 GMT

Hello @senge-esca

For better help you, please describe your question more detail?

How to reproduce your issue?

What about your project?

When hard fault?

Alice

topic Re: LPC844 Clock Settings ended up in Hard Fault in LPC Microcontrollers

LPC844 Clock Settings ended up in Hard Fault

Re: LPC844 Clock Settings ended up in Hard Fault