67 lines
3.1 KiB
C
67 lines
3.1 KiB
C
//-------------------------------------------------------------------
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// Filename: hal_clock.h
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// Description: This file defines interface for clock related functions
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//-------------------------------------------------------------------
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//-------------------------------------------------------------------
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// CONSTANTS
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//-------------------------------------------------------------------
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// SEE DATA SHEET FOR DETAILS ABOUT THE FOLLOWING BIT MASKS
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// Parameters for cc2530ClockSetMainSrc
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#define CLOCK_SRC_XOSC 0 // High speed Crystal Oscillator Control
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#define CLOCK_SRC_HFRC 1 // Low power RC Oscillator
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// Parameters for cc2530ClockSelect32k
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#define CLOCK_32K_XTAL 0 // 32.768 Hz crystal oscillator
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#define CLOCK_32K_RCOSC 1 // 32 kHz RC oscillator
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// Bit masks to check CLKCON register
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#define CLKCON_OSC32K_BM 0x80 // bit mask, for the slow 32k clock oscillator
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#define CLKCON_OSC_BM 0x40 // bit mask, for the system clock oscillator
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#define CLKCON_TICKSPD_BM 0x38 // bit mask, for timer ticks output setting
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#define CLKCON_CLKSPD_BM 0x01 // bit maks, for the clock speed
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#define TICKSPD_DIV_1 (0x00 << 3)
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#define TICKSPD_DIV_2 (0x01 << 3)
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#define TICKSPD_DIV_4 (0x02 << 3)
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#define TICKSPD_DIV_8 (0x03 << 3)
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#define TICKSPD_DIV_16 (0x04 << 3)
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#define TICKSPD_DIV_32 (0x05 << 3)
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#define TICKSPD_DIV_64 (0x06 << 3)
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#define TICKSPD_DIV_128 (0x07 << 3)
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// Bit masks to check SLEEPSTA register
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#define SLEEP_XOSC_STB_BM 0x40 // bit mask, check the stability of XOSC
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#define SLEEP_HFRC_STB_BM 0x20 // bit maks, check the stability of the High-frequency RC oscillator
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#define SLEEP_OSC_PD_BM 0x04 // bit mask, power down system clock oscillator(s)
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//-------------------------------------------------------------------
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// MACROS
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//-------------------------------------------------------------------
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// Macro for checking status of the high frequency RC oscillator.
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#define CC2530_IS_HFRC_STABLE(x) (SLEEPSTA & SLEEP_HFRC_STB_BM)
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// Macro for checking status of the crystal oscillator
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#define CC2530_IS_XOSC_STABLE(x) (SLEEPSTA & SLEEP_XOSC_STB_BM)
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// Macro for getting the clock division factor
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#define CC2530_GET_CLKSPD(x) (CLKCONSTA & CLKCON_CLKSPD_BM)
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// Macro for getting the timer tick division factor.
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#define CC2530_GET_TICKSPD(x) ((CLKCONSTA & CLKCON_TICKSPD_BM) >> 3)
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// Macro for setting the clock division factor, x value from 0b000 to 0b111
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#define CC2530_SET_TICKSPD(x) st( CLKCONCMD = ((((x) << 3) & 0x38) | (CLKCONCMD & 0xC7)); )
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// Macro for setting the timer tick division factor, x value from 0b000 to 0b111
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#define CC2530_SET_CLKSPD(x) st( CLKCONCMD = (((x) & 0x07)| (CLKCONCMD & 0xF8)); )
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// Macro for waiting for clock updates
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#define CC2530_WAIT_CLK_UPDATE() st( uint8 ____clkcon; uint8 ____clkconsta; ____clkcon = CLKCONCMD; do { ____clkconsta = CLKCONSTA; } while (____clkconsta != ____clkcon); )
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//-------------------------------------------------------------------
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// FUNCTIONS
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//-------------------------------------------------------------------
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void clockSetMainSrc(uint8 source);
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uint8 clockSelect32k(uint8 source);
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