Hi all,
I have used the following code to configure a PLL module and, consequently, the rest of the clocks that are derived from fPLL signal. It is similar to the structure used in examples, in fact, I copied the structure to make sure there are no mistakes.
However, the code "breaks" when the above configuration is called from inside the main() function. However, if I use the default settings, the code works. I have tracked the problem down to this particular command inside the XMC_SCU_CLOCK_StartSystemPll(source, mode, ndiv, pdiv, kdiv):
The "Disassembly" window indicates that the code stops working properly at the following line, after stopping on '08000ccc' and stepping into '08000cce'.
Regards,
Andrey
I have used the following code to configure a PLL module and, consequently, the rest of the clocks that are derived from fPLL signal. It is similar to the structure used in examples, in fact, I copied the structure to make sure there are no mistakes.
Code:
XMC_SCU_CLOCK_CONFIG_t clock_config =
{
.syspll_config.n_div = 80U,
.syspll_config.p_div = 2U,
.syspll_config.k_div = 4U,
.syspll_config.mode = XMC_SCU_CLOCK_SYSPLL_MODE_NORMAL,
.syspll_config.clksrc = XMC_SCU_CLOCK_SYSPLLCLKSRC_OSCHP,
.enable_oschp = true,
.enable_osculp = false,
.calibration_mode = XMC_SCU_CLOCK_FOFI_CALIBRATION_MODE_FACTORY,
.fstdby_clksrc = XMC_SCU_HIB_STDBYCLKSRC_OSI,
.fsys_clksrc = XMC_SCU_CLOCK_SYSCLKSRC_PLL,
.fsys_clkdiv = 1U,
.fcpu_clkdiv = 1U,
.fccu_clkdiv = 1U,
.fperipheral_clkdiv = 1U
};Code:
SCU_PLL->PLLCON1 = (uint32_t)((SCU_PLL->PLLCON1 & ~(SCU_PLL_PLLCON1_NDIV_Msk | SCU_PLL_PLLCON1_K2DIV_Msk |
SCU_PLL_PLLCON1_PDIV_Msk)) | ((ndiv - 1UL) << SCU_PLL_PLLCON1_NDIV_Pos) |
((kdiv_temp - 1UL) << SCU_PLL_PLLCON1_K2DIV_Pos) |
((pdiv - 1UL)<< SCU_PLL_PLLCON1_PDIV_Pos));Code:
1333 SCU_PLL->PLLCON1 = (uint32_t)((SCU_PLL->PLLCON1 & ~(SCU_PLL_PLLCON1_NDIV_Msk | SCU_PLL_PLLCON1_K2DIV_Msk |
08000cc8: ldr r1, [pc, #252] ; (0x8000dc8 <XMC_SCU_CLOCK_StartSystemPll+400>)
08000cca: ldr r3, [pc, #252] ; (0x8000dc8 <XMC_SCU_CLOCK_StartSystemPll+400>)
08000ccc: ldr r2, [r3, #8]
08000cce: ldr r3, [pc, #252] ; (0x8000dcc <XMC_SCU_CLOCK_StartSystemPll+404>)Andrey