Digital to Analog Coversion (DAC) Peripheral API. More...
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Data Structures | |
struct | DAC_Init_TypeDef |
struct | DAC_InitChannel_TypeDef |
Defines | |
#define | DAC_INIT_DEFAULT |
#define | DAC_INITCHANNEL_DEFAULT |
Enumerations | |
enum | DAC_ConvMode_TypeDef { dacConvModeContinuous = _DAC_CTRL_CONVMODE_CONTINUOUS, dacConvModeSampleHold = _DAC_CTRL_CONVMODE_SAMPLEHOLD, dacConvModeSampleOff = _DAC_CTRL_CONVMODE_SAMPLEOFF } |
enum | DAC_Output_TypeDef { dacOutputDisable = _DAC_CTRL_OUTMODE_DISABLE, dacOutputPin = _DAC_CTRL_OUTMODE_PIN, dacOutputADC = _DAC_CTRL_OUTMODE_ADC, dacOutputPinADC = _DAC_CTRL_OUTMODE_PINADC } |
enum | DAC_PRSSEL_TypeDef { dacPRSSELCh0 = _DAC_CH0CTRL_PRSSEL_PRSCH0, dacPRSSELCh1 = _DAC_CH0CTRL_PRSSEL_PRSCH1, dacPRSSELCh2 = _DAC_CH0CTRL_PRSSEL_PRSCH2, dacPRSSELCh3 = _DAC_CH0CTRL_PRSSEL_PRSCH3 } |
enum | DAC_Ref_TypeDef { dacRef1V25 = _DAC_CTRL_REFSEL_1V25, dacRef2V5 = _DAC_CTRL_REFSEL_2V5, dacRefVDD = _DAC_CTRL_REFSEL_VDD } |
enum | DAC_Refresh_TypeDef { dacRefresh8 = _DAC_CTRL_REFRSEL_8CYCLES, dacRefresh16 = _DAC_CTRL_REFRSEL_16CYCLES, dacRefresh32 = _DAC_CTRL_REFRSEL_32CYCLES, dacRefresh64 = _DAC_CTRL_REFRSEL_64CYCLES } |
Functions | |
void | DAC_Enable (DAC_TypeDef *dac, unsigned int ch, bool enable) |
Enable/disable DAC channel. | |
void | DAC_Init (DAC_TypeDef *dac, const DAC_Init_TypeDef *init) |
Initialize DAC. | |
void | DAC_InitChannel (DAC_TypeDef *dac, const DAC_InitChannel_TypeDef *init, unsigned int ch) |
Initialize DAC channel. | |
void | DAC_ChannelOutputSet (DAC_TypeDef *dac, unsigned int channel, uint32_t value) |
Set the output signal of a DAC channel to a given value. | |
__STATIC_INLINE void | DAC_Channel0OutputSet (DAC_TypeDef *dac, uint32_t value) |
Set the output signal of DAC channel 0 to a given value. | |
__STATIC_INLINE void | DAC_Channel1OutputSet (DAC_TypeDef *dac, uint32_t value) |
Set the output signal of DAC channel 1 to a given value. | |
__STATIC_INLINE void | DAC_IntClear (DAC_TypeDef *dac, uint32_t flags) |
Clear one or more pending DAC interrupts. | |
__STATIC_INLINE void | DAC_IntDisable (DAC_TypeDef *dac, uint32_t flags) |
Disable one or more DAC interrupts. | |
__STATIC_INLINE void | DAC_IntEnable (DAC_TypeDef *dac, uint32_t flags) |
Enable one or more DAC interrupts. | |
__STATIC_INLINE uint32_t | DAC_IntGet (DAC_TypeDef *dac) |
Get pending DAC interrupt flags. | |
__STATIC_INLINE void | DAC_IntSet (DAC_TypeDef *dac, uint32_t flags) |
Set one or more pending DAC interrupts from SW. | |
uint8_t | DAC_PrescaleCalc (uint32_t dacFreq, uint32_t hfperFreq) |
Calculate prescaler value used to determine DAC clock. | |
void | DAC_Reset (DAC_TypeDef *dac) |
Reset DAC to same state as after a HW reset. |
Digital to Analog Coversion (DAC) Peripheral API.
#define DAC_INIT_DEFAULT |
{ dacRefresh8, /* Refresh every 8 prescaled cycles. */ \ dacRef1V25, /* 1.25V internal reference. */ \ dacOutputPin, /* Output to pin only. */ \ dacConvModeContinuous, /* Continuous mode. */ \ 0, /* No prescaling. */ \ false, /* Do not enable low pass filter. */ \ false, /* Do not reset prescaler on ch0 start. */ \ false, /* DAC output enable always on. */ \ false, /* Disable sine mode. */ \ false /* Single ended mode. */ \ }
Default config for DAC init structure.
#define DAC_INITCHANNEL_DEFAULT |
{ false, /* Leave channel disabled when init done. */ \ false, /* Disable PRS triggering. */ \ false, /* Channel not refreshed automatically. */ \ dacPRSSELCh0 /* Select PRS ch0 (if PRS triggering enabled). */ \ }
Default config for DAC channel init structure.
enum DAC_ConvMode_TypeDef |
enum DAC_Output_TypeDef |
enum DAC_PRSSEL_TypeDef |
enum DAC_Ref_TypeDef |
enum DAC_Refresh_TypeDef |
__STATIC_INLINE void DAC_Channel0OutputSet | ( | DAC_TypeDef * | dac, | |
uint32_t | value | |||
) |
Set the output signal of DAC channel 0 to a given value.
This function sets the output signal of DAC channel 0 by writing value
to the CH0DATA register.
[in] | dac | Pointer to DAC peripheral register block. |
[in] | value | Value to write to the channel 0 output register CH0DATA. |
Definition at line 258 of file em_dac.h.
Referenced by DAC_ChannelOutputSet().
__STATIC_INLINE void DAC_Channel1OutputSet | ( | DAC_TypeDef * | dac, | |
uint32_t | value | |||
) |
Set the output signal of DAC channel 1 to a given value.
This function sets the output signal of DAC channel 1 by writing value
to the CH1DATA register.
[in] | dac | Pointer to DAC peripheral register block. |
[in] | value | Value to write to the channel 1 output register CH1DATA. |
Definition at line 280 of file em_dac.h.
Referenced by DAC_ChannelOutputSet().
void DAC_ChannelOutputSet | ( | DAC_TypeDef * | dac, | |
unsigned int | channel, | |||
uint32_t | value | |||
) |
Set the output signal of a DAC channel to a given value.
This function sets the output signal of a DAC channel by writing value
to the corresponding CHnDATA register.
[in] | dac | Pointer to DAC peripheral register block. |
[in] | channel | Channel number to set output of. |
[in] | value | Value to write to the channel output register CHnDATA. |
Definition at line 242 of file em_dac.c.
References DAC_Channel0OutputSet(), and DAC_Channel1OutputSet().
void DAC_Enable | ( | DAC_TypeDef * | dac, | |
unsigned int | ch, | |||
bool | enable | |||
) |
Enable/disable DAC channel.
[in] | dac | Pointer to DAC peripheral register block. |
[in] | ch | Channel to enable/disable. |
[in] | enable | true to enable DAC channel, false to disable. |
Definition at line 82 of file em_dac.c.
References BITBAND_Peripheral().
void DAC_Init | ( | DAC_TypeDef * | dac, | |
const DAC_Init_TypeDef * | init | |||
) |
Initialize DAC.
Initializes common parts for both channels. In addition, channel control configuration must be done, please refer to DAC_InitChannel().
[in] | dac | Pointer to DAC peripheral register block. |
[in] | init | Pointer to DAC initialization structure. |
Definition at line 119 of file em_dac.c.
References BITBAND_Peripheral(), DAC_Init_TypeDef::ch0ResetPre, DAC_Init_TypeDef::convMode, dacRef2V5, dacRefVDD, DAC_Init_TypeDef::diff, DAC_Init_TypeDef::outEnablePRS, DAC_Init_TypeDef::outMode, DAC_Init_TypeDef::prescale, DAC_Init_TypeDef::reference, DAC_Init_TypeDef::refresh, and DAC_Init_TypeDef::sineEnable.
void DAC_InitChannel | ( | DAC_TypeDef * | dac, | |
const DAC_InitChannel_TypeDef * | init, | |||
unsigned int | ch | |||
) |
Initialize DAC channel.
[in] | dac | Pointer to DAC peripheral register block. |
[in] | init | Pointer to DAC initialization structure. |
[in] | ch | Channel number to initialize. |
Definition at line 188 of file em_dac.c.
References DAC_InitChannel_TypeDef::enable, DAC_InitChannel_TypeDef::prsEnable, DAC_InitChannel_TypeDef::prsSel, and DAC_InitChannel_TypeDef::refreshEnable.
__STATIC_INLINE void DAC_IntClear | ( | DAC_TypeDef * | dac, | |
uint32_t | flags | |||
) |
__STATIC_INLINE void DAC_IntDisable | ( | DAC_TypeDef * | dac, | |
uint32_t | flags | |||
) |
__STATIC_INLINE void DAC_IntEnable | ( | DAC_TypeDef * | dac, | |
uint32_t | flags | |||
) |
Enable one or more DAC interrupts.
[in] | dac | Pointer to DAC peripheral register block. |
[in] | flags | DAC interrupt sources to enable. Use a bitwise logic OR combination of valid interrupt flags for the DAC module (DAC_IF_nnn). |
__STATIC_INLINE uint32_t DAC_IntGet | ( | DAC_TypeDef * | dac | ) |
Get pending DAC interrupt flags.
[in] | dac | Pointer to DAC peripheral register block. |
__STATIC_INLINE void DAC_IntSet | ( | DAC_TypeDef * | dac, | |
uint32_t | flags | |||
) |
uint8_t DAC_PrescaleCalc | ( | uint32_t | dacFreq, | |
uint32_t | hfperFreq | |||
) |
Calculate prescaler value used to determine DAC clock.
The DAC clock is given by: HFPERCLK / (prescale ^ 2). If the requested DAC frequency is low and the max prescaler value can not adjust the actual DAC frequency lower than the requested DAC frequency, then the max prescaler value is returned, resulting in a higher DAC frequency than requested.
[in] | dacFreq | DAC frequency wanted. The frequency will automatically be adjusted to be below max allowed DAC clock. |
[in] | hfperFreq | Frequency in Hz of reference HFPER clock. Set to 0 to use currently defined HFPER clock setting. |
dacFreq
. Definition at line 282 of file em_dac.c.
References CMU_ClockFreqGet(), and cmuClock_HFPER.