/* Unlock the protected registers */
UNLOCKREG();
/* Enable the 12MHz oscillator oscillation */
DrvSYS_SetOscCtrl(E_SYS_XTL12M, 1);
DrvSYS_SelectPLLSource(E_SYS_EXTERNAL_12M);
DrvSYS_Open(50000000);
/* HCLK clock source. 0: external 12MHz; 4:internal 22MHz RC oscillator */
DrvSYS_SelectHCLKSource(2);//(0);
LOCKREG();
DrvSYS_SetClockDivider(E_SYS_HCLK_DIV, 0);
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