SAM Analog Comparator Driver.
Copyright (c) 2012-2020 Microchip Technology Inc. and its subsidiaries.
Data Structures | |
| struct | ac_chan_config |
| Analog Comparator Comparator channel configuration structure. More... | |
| struct | ac_config |
| Analog Comparator module configuration structure. More... | |
| struct | ac_events |
| AC event enable/disable structure. More... | |
| struct | ac_module |
| AC software device instance structure. More... | |
| struct | ac_win_config |
| Analog Comparator Window configuration structure. More... | |
Macros | |
Driver Feature Definition | |
Define AC driver feature set according to different device family. | |
| #define | FEATURE_AC_RUN_IN_STANDY_PAIR_COMPARATOR |
| Run in standby feature for comparator pair. More... | |
AC Window Channel Status Flags | |
AC window channel status flags, returned by ac_win_get_status(). | |
| #define | AC_WIN_STATUS_UNKNOWN (1UL << 0) |
| Unknown output state; the comparator window channel was not ready. More... | |
| #define | AC_WIN_STATUS_ABOVE (1UL << 1) |
| Window Comparator's input voltage is above the window. More... | |
| #define | AC_WIN_STATUS_INSIDE (1UL << 2) |
| Window Comparator's input voltage is inside the window. More... | |
| #define | AC_WIN_STATUS_BELOW (1UL << 3) |
| Window Comparator's input voltage is below the window. More... | |
| #define | AC_WIN_STATUS_INTERRUPT_SET (1UL << 4) |
| This state reflects the window interrupt flag. More... | |
AC Channel Status Flags | |
AC channel status flags, returned by ac_chan_get_status(). | |
| #define | AC_CHAN_STATUS_UNKNOWN (1UL << 0) |
| Unknown output state; the comparator channel was not ready. More... | |
| #define | AC_CHAN_STATUS_NEG_ABOVE_POS (1UL << 1) |
| Comparator's negative input pin is higher in voltage than the positive input pin. More... | |
| #define | AC_CHAN_STATUS_POS_ABOVE_NEG (1UL << 2) |
| Comparator's positive input pin is higher in voltage than the negative input pin. More... | |
| #define | AC_CHAN_STATUS_INTERRUPT_SET (1UL << 3) |
| This state reflects the channel interrupt flag. More... | |
Typedefs | |
| typedef void(* | ac_callback_t )(struct ac_module *const module_inst) |
| Type definition for a AC module callback function. More... | |
Enumerations | |
| enum | ac_callback { AC_CALLBACK_COMPARATOR_0 = 0, AC_CALLBACK_COMPARATOR_1 = 1, AC_CALLBACK_WINDOW_0 = 4 } |
| Enum for possible callback types for the AC module. More... | |
| enum | ac_chan_channel { AC_CHAN_CHANNEL_0 = 0, AC_CHAN_CHANNEL_1 = 1, AC_CHAN_CHANNEL_2 = 2, AC_CHAN_CHANNEL_3 = 3 } |
| AC comparator channel selection enum. More... | |
| enum | ac_chan_filter { AC_CHAN_FILTER_NONE = AC_COMPCTRL_FLEN_OFF, AC_CHAN_FILTER_MAJORITY_3 = AC_COMPCTRL_FLEN_MAJ3, AC_CHAN_FILTER_MAJORITY_5 = AC_COMPCTRL_FLEN_MAJ5 } |
| AC channel output filtering configuration enum. More... | |
| enum | ac_chan_interrupt_selection { AC_CHAN_INTERRUPT_SELECTION_TOGGLE = AC_COMPCTRL_INTSEL_TOGGLE, AC_CHAN_INTERRUPT_SELECTION_RISING = AC_COMPCTRL_INTSEL_RISING, AC_CHAN_INTERRUPT_SELECTION_FALLING = AC_COMPCTRL_INTSEL_FALLING, AC_CHAN_INTERRUPT_SELECTION_END_OF_COMPARE = AC_COMPCTRL_INTSEL_EOC } |
| Channel interrupt selection enum. More... | |
| enum | ac_chan_neg_mux { AC_CHAN_NEG_MUX_PIN0 = AC_COMPCTRL_MUXNEG_PIN0, AC_CHAN_NEG_MUX_PIN1 = AC_COMPCTRL_MUXNEG_PIN1, AC_CHAN_NEG_MUX_PIN2 = AC_COMPCTRL_MUXNEG_PIN2, AC_CHAN_NEG_MUX_PIN3 = AC_COMPCTRL_MUXNEG_PIN3, AC_CHAN_NEG_MUX_GND = AC_COMPCTRL_MUXNEG_GND, AC_CHAN_NEG_MUX_SCALED_VCC = AC_COMPCTRL_MUXNEG_VSCALE, AC_CHAN_NEG_MUX_BANDGAP = AC_COMPCTRL_MUXNEG_BANDGAP, AC_CHAN_NEG_MUX_DAC0 = AC_COMPCTRL_MUXNEG_DAC } |
| AC channel negative comparator pin input configuration enum. More... | |
| enum | ac_chan_output { AC_CHAN_OUTPUT_INTERNAL = AC_COMPCTRL_OUT_OFF, AC_CHAN_OUTPUT_ASYNCRONOUS = AC_COMPCTRL_OUT_ASYNC, AC_CHAN_OUTPUT_SYNCHRONOUS = AC_COMPCTRL_OUT_SYNC } |
| AC channel GPIO output routing configuration enum. More... | |
| enum | ac_chan_pos_mux { AC_CHAN_POS_MUX_PIN0 = AC_COMPCTRL_MUXPOS_PIN0, AC_CHAN_POS_MUX_PIN1 = AC_COMPCTRL_MUXPOS_PIN1, AC_CHAN_POS_MUX_PIN2 = AC_COMPCTRL_MUXPOS_PIN2, AC_CHAN_POS_MUX_PIN3 = AC_COMPCTRL_MUXPOS_PIN3 } |
| AC channel positive comparator pin input configuration enum. More... | |
| enum | ac_chan_sample_mode { AC_CHAN_MODE_CONTINUOUS = 0, AC_CHAN_MODE_SINGLE_SHOT = AC_COMPCTRL_SINGLE } |
| AC channel input sampling mode configuration enum. More... | |
| enum | ac_win_channel { AC_WIN_CHANNEL_0 = 0, AC_WIN_CHANNEL_1 = 1 } |
| AC window channel selection enum. More... | |
| enum | ac_win_interrupt_selection { AC_WIN_INTERRUPT_SELECTION_ABOVE = AC_WINCTRL_WINTSEL0_ABOVE, AC_WIN_INTERRUPT_SELECTION_INSIDE = AC_WINCTRL_WINTSEL0_INSIDE, AC_WIN_INTERRUPT_SELECTION_BELOW = AC_WINCTRL_WINTSEL0_BELOW, AC_WIN_INTERRUPT_SELECTION_OUTSIDE = AC_WINCTRL_WINTSEL0_OUTSIDE } |
| Window interrupt selection enum. More... | |
Functions | |
Configuration and Initialization | |
| enum status_code | ac_reset (struct ac_module *const module_inst) |
| Resets and disables the Analog Comparator driver. More... | |
| enum status_code | ac_init (struct ac_module *const module_inst, Ac *const hw, struct ac_config *const config) |
| Initializes and configures the Analog Comparator driver. More... | |
| static bool | ac_is_syncing (struct ac_module *const module_inst) |
| Determines if the hardware module(s) are currently synchronizing to the bus. More... | |
| static void | ac_get_config_defaults (struct ac_config *const config) |
| Initializes all members of an Analog Comparator configuration structure to safe defaults. More... | |
| static void | ac_enable (struct ac_module *const module_inst) |
| Enables an Analog Comparator that was previously configured. More... | |
| static void | ac_disable (struct ac_module *const module_inst) |
| Disables an Analog Comparator that was previously enabled. More... | |
| static void | ac_enable_events (struct ac_module *const module_inst, struct ac_events *const events) |
| Enables an Analog Comparator event input or output. More... | |
| static void | ac_disable_events (struct ac_module *const module_inst, struct ac_events *const events) |
| Disables an Analog Comparator event input or output. More... | |
Channel Configuration and Initialization | |
| static void | ac_chan_get_config_defaults (struct ac_chan_config *const config) |
| Initializes all members of an Analog Comparator channel configuration structure to safe defaults. More... | |
| enum status_code | ac_chan_set_config (struct ac_module *const module_inst, const enum ac_chan_channel channel, struct ac_chan_config *const config) |
| Writes an Analog Comparator channel configuration to the hardware module. More... | |
| static void | ac_chan_enable (struct ac_module *const module_inst, const enum ac_chan_channel channel) |
| Enables an Analog Comparator channel that was previously configured. More... | |
| static void | ac_chan_disable (struct ac_module *const module_inst, const enum ac_chan_channel channel) |
| Disables an Analog Comparator channel that was previously enabled. More... | |
Channel Control | |
| static void | ac_chan_trigger_single_shot (struct ac_module *const module_inst, const enum ac_chan_channel channel) |
| Triggers a comparison on a comparator that is configured in single shot mode. More... | |
| static bool | ac_chan_is_ready (struct ac_module *const module_inst, const enum ac_chan_channel channel) |
| Determines if a given comparator channel is ready for comparisons. More... | |
| static uint8_t | ac_chan_get_status (struct ac_module *const module_inst, const enum ac_chan_channel channel) |
| Determines the output state of a comparator channel. More... | |
| static void | ac_chan_clear_status (struct ac_module *const module_inst, const enum ac_chan_channel channel) |
| Clears an interrupt status flag. More... | |
Window Mode Configuration and Initialization | |
| static void | ac_win_get_config_defaults (struct ac_win_config *const config) |
| Initializes an Analog Comparator window configuration structure to defaults. More... | |
| enum status_code | ac_win_set_config (struct ac_module *const module_inst, enum ac_win_channel const win_channel, struct ac_win_config *const config) |
| Function used to setup interrupt selection of a window. More... | |
| enum status_code | ac_win_enable (struct ac_module *const module_inst, const enum ac_win_channel win_channel) |
| Enables an Analog Comparator window channel that was previously configured. More... | |
| void | ac_win_disable (struct ac_module *const module_inst, const enum ac_win_channel win_channel) |
| Disables an Analog Comparator window channel that was previously enabled. More... | |
Window Mode Control | |
| static bool | ac_win_is_ready (struct ac_module *const module_inst, const enum ac_win_channel win_channel) |
| Determines if a given Window Comparator is ready for comparisons. More... | |
| uint8_t | ac_win_get_status (struct ac_module *const module_inst, const enum ac_win_channel win_channel) |
| Determines the state of a specified Window Comparator. More... | |
| static void | ac_win_clear_status (struct ac_module *const module_inst, const enum ac_win_channel win_channel) |
| Clears an interrupt status flag. More... | |
1.8.5