SAM TC - Timer Counter Driver.
Copyright (c) 2013-2020 Microchip Technology Inc. and its subsidiaries.
#include <compiler.h>#include <clock.h>#include <gclk.h>#include <pinmux.h>#include <system_interrupt.h>Data Structures | |
| struct | tc_16bit_config |
| Configuration struct for TC module in 16-bit size counter mode. More... | |
| struct | tc_32bit_config |
| Configuration struct for TC module in 32-bit size counter mode. More... | |
| struct | tc_8bit_config |
| Configuration struct for TC module in 8-bit size counter mode. More... | |
| struct | tc_config |
| TC configuration structure. More... | |
| struct | tc_events |
| TC event enable/disable structure. More... | |
| struct | tc_module |
| TC software device instance structure. More... | |
| struct | tc_pwm_channel |
| Configuration struct for TC module in 32-bit size counter mode. More... | |
Macros | |
| #define | FEATURE_TC_DOUBLE_BUFFERED |
| Define port features set according to different device family. More... | |
| #define | FEATURE_TC_SYNCBUSY_SCHEME_VERSION_2 |
| SYNCBUSY scheme version 2. More... | |
| #define | FEATURE_TC_STAMP_PW_CAPTURE |
| TC time stamp capture and pulse width capture. More... | |
| #define | FEATURE_TC_READ_SYNC |
| Read synchronization of COUNT. More... | |
| #define | FEATURE_TC_IO_CAPTURE |
| I/O pin edge capture. More... | |
| #define | FEATURE_TC_GENERATE_DMA_TRIGGER |
| Generate Direct Memory Access (DMA) triggers. More... | |
Module Status Flags | |
TC status flags, returned by tc_get_status() and cleared by tc_clear_status(). | |
| #define | TC_STATUS_CHANNEL_0_MATCH (1UL << 0) |
| Timer channel 0 has matched against its compare value, or has captured a new value. More... | |
| #define | TC_STATUS_CHANNEL_1_MATCH (1UL << 1) |
| Timer channel 1 has matched against its compare value, or has captured a new value. More... | |
| #define | TC_STATUS_SYNC_READY (1UL << 2) |
| Timer register synchronization has completed, and the synchronized count value may be read. More... | |
| #define | TC_STATUS_CAPTURE_OVERFLOW (1UL << 3) |
| A new value was captured before the previous value was read, resulting in lost data. More... | |
| #define | TC_STATUS_COUNT_OVERFLOW (1UL << 4) |
| The timer count value has overflowed from its maximum value to its minimum when counting upward, or from its minimum value to its maximum when counting downward. More... | |
| #define | TC_STATUS_CHN0_BUFFER_VALID (1UL << 5) |
| Channel 0 compare or capture buffer valid. More... | |
| #define | TC_STATUS_CHN1_BUFFER_VALID (1UL << 6) |
| Channel 1 compare or capture buffer valid. More... | |
| #define | TC_STATUS_PERIOD_BUFFER_VALID (1UL << 7) |
| Period buffer valid. More... | |
TC Wave Generation Mode | |
| #define | TC_WAVE_GENERATION_NORMAL_FREQ_MODE TC_CTRLA_WAVEGEN_NFRQ |
| TC wave generation mode: normal frequency. More... | |
| #define | TC_WAVE_GENERATION_MATCH_FREQ_MODE TC_CTRLA_WAVEGEN_MFRQ |
| TC wave generation mode: match frequency. More... | |
| #define | TC_WAVE_GENERATION_NORMAL_PWM_MODE TC_CTRLA_WAVEGEN_NPWM |
| TC wave generation mode: normal PWM. More... | |
| #define | TC_WAVE_GENERATION_MATCH_PWM_MODE TC_CTRLA_WAVEGEN_MPWM |
| TC wave generation mode: match PWM. More... | |
Enumerations | |
| enum | tc_callback { TC_CALLBACK_OVERFLOW, TC_CALLBACK_ERROR, TC_CALLBACK_CC_CHANNEL0, TC_CALLBACK_CC_CHANNEL1 } |
| Enum for the possible callback types for the TC module. More... | |
| enum | tc_clock_prescaler { TC_CLOCK_PRESCALER_DIV1 = TC_CTRLA_PRESCALER(0), TC_CLOCK_PRESCALER_DIV2 = TC_CTRLA_PRESCALER(1), TC_CLOCK_PRESCALER_DIV4 = TC_CTRLA_PRESCALER(2), TC_CLOCK_PRESCALER_DIV8 = TC_CTRLA_PRESCALER(3), TC_CLOCK_PRESCALER_DIV16 = TC_CTRLA_PRESCALER(4), TC_CLOCK_PRESCALER_DIV64 = TC_CTRLA_PRESCALER(5), TC_CLOCK_PRESCALER_DIV256 = TC_CTRLA_PRESCALER(6), TC_CLOCK_PRESCALER_DIV1024 = TC_CTRLA_PRESCALER(7) } |
| TC clock prescaler values. More... | |
| enum | tc_compare_capture_channel { TC_COMPARE_CAPTURE_CHANNEL_0, TC_COMPARE_CAPTURE_CHANNEL_1 } |
| Index of the compare capture channels. More... | |
| enum | tc_count_direction { TC_COUNT_DIRECTION_UP, TC_COUNT_DIRECTION_DOWN } |
| TC module count direction. More... | |
| enum | tc_counter_size { TC_COUNTER_SIZE_8BIT = TC_CTRLA_MODE_COUNT8, TC_COUNTER_SIZE_16BIT = TC_CTRLA_MODE_COUNT16, TC_COUNTER_SIZE_32BIT = TC_CTRLA_MODE_COUNT32 } |
| Specifies if the counter is 8-, 16-, or 32-bit. More... | |
| enum | tc_reload_action { TC_RELOAD_ACTION_GCLK = TC_CTRLA_PRESCSYNC_GCLK, TC_RELOAD_ACTION_PRESC = TC_CTRLA_PRESCSYNC_PRESC, TC_RELOAD_ACTION_RESYNC = TC_CTRLA_PRESCSYNC_RESYNC } |
| TC Counter reload action enum. More... | |
| enum | tc_wave_generation { TC_WAVE_GENERATION_NORMAL_FREQ = TC_WAVE_GENERATION_NORMAL_FREQ_MODE, TC_WAVE_GENERATION_MATCH_FREQ = TC_WAVE_GENERATION_MATCH_FREQ_MODE, TC_WAVE_GENERATION_NORMAL_PWM = TC_WAVE_GENERATION_NORMAL_PWM_MODE, TC_WAVE_GENERATION_MATCH_PWM = TC_WAVE_GENERATION_MATCH_PWM_MODE } |
| TC wave generation mode enum. More... | |
Functions | |
Driver Initialization and Configuration | |
| static bool | tc_is_syncing (const struct tc_module *const module_inst) |
| Determines if the hardware module(s) are currently synchronizing to the bus. More... | |
| static void | tc_get_config_defaults (struct tc_config *const config) |
| Initializes config with predefined default values. More... | |
| enum status_code | tc_init (struct tc_module *const module_inst, Tc *const hw, const struct tc_config *const config) |
Event Management | |
| static void | tc_enable_events (struct tc_module *const module_inst, struct tc_events *const events) |
| Enables a TC module event input or output. More... | |
| static void | tc_disable_events (struct tc_module *const module_inst, struct tc_events *const events) |
| Disables a TC module event input or output. More... | |
Enable/Disable/Reset | |
| enum status_code | tc_reset (const struct tc_module *const module_inst) |
| static void | tc_enable (const struct tc_module *const module_inst) |
| Enable the TC module. More... | |
| static void | tc_disable (const struct tc_module *const module_inst) |
| Disables the TC module. More... | |
Get/Set Count Value | |
| uint32_t | tc_get_count_value (const struct tc_module *const module_inst) |
| enum status_code | tc_set_count_value (const struct tc_module *const module_inst, const uint32_t count) |
Start/Stop Counter | |
| static void | tc_stop_counter (const struct tc_module *const module_inst) |
| Stops the counter. More... | |
| static void | tc_start_counter (const struct tc_module *const module_inst) |
| Starts the counter. More... | |
Double Buffering | |
| static void | tc_update_double_buffer (const struct tc_module *const module_inst) |
| Update double buffer. More... | |
Count Read Synchronization | |
| static void | tc_sync_read_count (const struct tc_module *const module_inst) |
| Read synchronization of COUNT. More... | |
Generate TC DMA Triggers Command | |
| static void | tc_dma_trigger_command (const struct tc_module *const module_inst) |
| TC DMA Trigger. More... | |
Get Capture Set Compare | |
| uint32_t | tc_get_capture_value (const struct tc_module *const module_inst, const enum tc_compare_capture_channel channel_index) |
| enum status_code | tc_set_compare_value (const struct tc_module *const module_inst, const enum tc_compare_capture_channel channel_index, const uint32_t compare_value) |
Set Top Value | |
| enum status_code | tc_set_top_value (const struct tc_module *const module_inst, const uint32_t top_value) |
Status Management | |
| static uint32_t | tc_get_status (struct tc_module *const module_inst) |
| Retrieves the current module status. More... | |
| static void | tc_clear_status (struct tc_module *const module_inst, const uint32_t status_flags) |
| Clears a module status flag. More... | |
Waveform Inversion Mode | |
| #define | TC_WAVEFORM_INVERT_CC0_MODE TC_CTRLC_INVEN(1) |
| Waveform inversion CC0 mode. More... | |
| #define | TC_WAVEFORM_INVERT_CC1_MODE TC_CTRLC_INVEN(2) |
| Waveform inversion CC1 mode. More... | |
| enum | tc_waveform_invert_output { TC_WAVEFORM_INVERT_OUTPUT_NONE = 0, TC_WAVEFORM_INVERT_OUTPUT_CHANNEL_0 = TC_WAVEFORM_INVERT_CC0_MODE, TC_WAVEFORM_INVERT_OUTPUT_CHANNEL_1 = TC_WAVEFORM_INVERT_CC1_MODE } |
| Waveform inversion mode. More... | |
| enum | tc_event_action { TC_EVENT_ACTION_OFF = TC_EVCTRL_EVACT_OFF, TC_EVENT_ACTION_RETRIGGER = TC_EVCTRL_EVACT_RETRIGGER, TC_EVENT_ACTION_INCREMENT_COUNTER = TC_EVCTRL_EVACT_COUNT, TC_EVENT_ACTION_START = TC_EVCTRL_EVACT_START, TC_EVENT_ACTION_PPW = TC_EVCTRL_EVACT_PPW, TC_EVENT_ACTION_PWP = TC_EVCTRL_EVACT_PWP, TC_EVENT_ACTION_STAMP = TC_EVCTRL_EVACT_STAMP, TC_EVENT_ACTION_PW = TC_EVCTRL_EVACT_PW } |
| Action to perform when the TC module is triggered by an event. More... | |
| typedef void(* | tc_callback_t )(struct tc_module *const module) |
| Type of the callback functions. More... | |
1.8.5