AVR XMEGA Quadrature Decoder Driver file.
Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.
Macros | |
| #define | EVSYS_PRESCFILT_CH04_gc (1<<4) |
| #define | EVSYS_PRESCFILT_CH15_gc (2<<4) |
| #define | EVSYS_PRESCFILT_CH26_gc (4<<4) |
| #define | EVSYS_PRESCFILT_CH37_gc (8<<4) |
| #define | QDEC_PIN_INDEX_MASK (1 << 2) |
| #define | QDEC_PIN_PH0_MASK (1 << 0) |
| #define | QDEC_PIN_PH90_MASK (1 << 1) |
| #define | QDEC_PIN_PHASES_MASK (QDEC_PIN_PH0_MASK | QDEC_PIN_PH90_MASK) |
| #define | TC_EVACT_FRQ_gc (0x05<<5) /* Frequency Capture */ |
Functions | |
| void | qdec_config_disable_index_pin (qdec_config_t *config) |
| Disables index line. More... | |
| void | qdec_config_enable_freq (qdec_config_t *config, uint32_t unit) |
| Defines frequency option. More... | |
| void | qdec_config_enable_index_pin (qdec_config_t *config, bool pin_invert, enum QDec_index_rec_state state) |
| Defines index line to enable the automaticaly position reset. More... | |
| void | qdec_config_event_channel (qdec_config_t *config, uint8_t event_channel) |
| Selects the event channel to use for quadrature decoder. More... | |
| void | qdec_config_freq_event_channel (qdec_config_t *config, uint8_t event_channel) |
| Selects the event channel to use for frequency quadrature decoder. More... | |
| void | qdec_config_freq_tc (qdec_config_t *config, volatile void *timer) |
| Selects the event channel to use for frequency quadrature decoder. More... | |
| void | qdec_config_phase_pins (qdec_config_t *config, PORT_t *port, uint8_t pin_base, bool pins_invert, uint16_t filter_us) |
| This function set up the needed configuration to the port, used for the quadrature decoding. More... | |
| void | qdec_config_revolution (qdec_config_t *config, uint16_t revolution) |
| Defines the revolution of quadrature decoder. More... | |
| void | qdec_config_tc (qdec_config_t *config, volatile void *timer) |
| Selects the event channel to use for quadrature decoder. More... | |
| void | qdec_enabled (qdec_config_t *config) |
| Loads and enables QDec system. More... | |
| static void | qdec_enabled_evsys (qdec_config_t *config) |
| static void | qdec_enabled_pins (qdec_config_t *config) |
| static void | qdec_enabled_tc (qdec_config_t *config) |
| static void | qdec_enabled_tc_freq (qdec_config_t *config) |
| static void | qdec_evsys_pin_2_chmux (PORT_t *port, uint8_t pins_base, uint8_t event_channel) |
| void | qdec_get_config_defaults (qdec_config_t *config) |
| This function initializes the configuration structure with the identified as commonly use case. More... | |
| bool | qdec_get_direction (qdec_config_t *config) |
| Returns the direction of the quadrature decoding counter. More... | |
| uint16_t | qdec_get_frequency (qdec_config_t *config) |
| Returns the frequency of quadrature encoder. More... | |
| uint16_t | qdec_get_position (qdec_config_t *config) |
| Returns the position of quadrature encoder. More... | |
| void | qdec_reset_position (qdec_config_t *config) |
| Returns the position of quadrature encoder. More... | |
| #define EVSYS_PRESCFILT_CH04_gc (1<<4) |
Referenced by qdec_enabled_evsys(), and qdec_enabled_tc_freq().
| #define EVSYS_PRESCFILT_CH15_gc (2<<4) |
Referenced by qdec_enabled_evsys(), and qdec_enabled_tc_freq().
| #define EVSYS_PRESCFILT_CH26_gc (4<<4) |
Referenced by qdec_enabled_tc_freq().
| #define EVSYS_PRESCFILT_CH37_gc (8<<4) |
Referenced by qdec_enabled_tc_freq().
| #define QDEC_PIN_INDEX_MASK (1 << 2) |
Referenced by qdec_enabled_pins().
| #define QDEC_PIN_PH0_MASK (1 << 0) |
| #define QDEC_PIN_PH90_MASK (1 << 1) |
| #define QDEC_PIN_PHASES_MASK (QDEC_PIN_PH0_MASK | QDEC_PIN_PH90_MASK) |
Referenced by qdec_enabled_pins().
| #define TC_EVACT_FRQ_gc (0x05<<5) /* Frequency Capture */ |
Referenced by main(), and qdec_enabled_tc_freq().
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References qdec_config::enabled, qdec_config::event_channel, EVSYS_PRESCFILT_CH04_gc, EVSYS_PRESCFILT_CH15_gc, qdec_config::index, qdec_config::pins_base, qdec_config::pins_filter_us, qdec_config::port, qdec_evsys_pin_2_chmux(), qdec_config::rec_state, qdec_config::rotary, sysclk_enable_module(), SYSCLK_EVSYS, sysclk_get_per_hz(), and SYSCLK_PORT_GEN.
Referenced by qdec_enabled().
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References qdec_config::event_channel, qdec_config::revolution, tc_enable(), tc_set_input_capture(), tc_write_clock_source(), tc_write_count(), tc_write_period(), and qdec_config::timer.
Referenced by qdec_enabled().
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References Assert, qdec_config::coef, qdec_config::enabled, qdec_config::event_channel, EVSYS_PRESCFILT_CH04_gc, EVSYS_PRESCFILT_CH15_gc, EVSYS_PRESCFILT_CH26_gc, EVSYS_PRESCFILT_CH37_gc, qdec_config::freq_opt, qdec_config::index, qdec_config::last_freq, qdec_config::pins_base, qdec_config::port, qdec_evsys_pin_2_chmux(), qdec_config::revolution, TC_CCAEN, tc_enable(), tc_enable_cc_channels(), TC_EVACT_FRQ_gc, tc_get_resolution(), tc_set_input_capture(), tc_set_resolution(), tc_write_count(), tc_write_period(), qdec_config::timer, and qdec_config::unit.
Referenced by qdec_enabled().
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Referenced by qdec_enabled_evsys(), and qdec_enabled_tc_freq().
1.8.5