25 lines
627 B
C
25 lines
627 B
C
/* (C) András Wiesner */
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#include "osc.h"
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#include "driverlib/sysctl.h"
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#include <stdint.h>
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uint32_t g_ui32SysClock;
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uint32_t SystemCoreClock;
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void SystemCoreClockUpdate() {
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SystemCoreClock = g_ui32SysClock;
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}
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void OSC_init() {
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SysCtlMOSCConfigSet(SYSCTL_MOSC_HIGHFREQ);
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#ifdef PART_TM4C123GE6PM
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SysCtlClockSet(SYSCTL_SYSDIV_2_5 | SYSCTL_XTAL_16MHZ | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN); // 80 MHz
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g_ui32SysClock = SysCtlClockGet();
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#elif PART_TM4C1294NCPDT
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g_ui32SysClock = SysCtlClockFreqSet(SYSCTL_XTAL_25MHZ | SYSCTL_OSC_MAIN |
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SYSCTL_USE_PLL | SYSCTL_CFG_VCO_480, 120000000); // 120 MHz
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#endif
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}
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