Pulse Width Modulation (PWM) driver for SAM.
Copyright (c) 2011-2019 Microchip Technology Inc. and its subsidiaries.
#include "pwm.h"
Macros | |
#define | PWM_CLOCK_DIV_MAX 256 |
#define | PWM_CLOCK_PRE_MAX 11 |
#define | PWM_WPCR_WPCMD_DISABLE_SW_PROT (PWM_WPCR_WPCMD(0)) |
#define | PWM_WPCR_WPCMD_ENABLE_HW_PROT (PWM_WPCR_WPCMD(2)) |
#define | PWM_WPCR_WPCMD_ENABLE_SW_PROT (PWM_WPCR_WPCMD(1)) |
#define | PWM_WPCR_WPKEY_PASSWD 0x50574D00 |
Functions | |
void | pwm_channel_disable (Pwm *p_pwm, uint32_t ul_channel) |
Disable the PWM channel. More... | |
void | pwm_channel_disable_interrupt (Pwm *p_pwm, uint32_t ul_event, uint32_t ul_fault) |
Disable the interrupt of a channel counter event and fault protection. More... | |
void | pwm_channel_enable (Pwm *p_pwm, uint32_t ul_channel) |
Enable the PWM channel. More... | |
void | pwm_channel_enable_interrupt (Pwm *p_pwm, uint32_t ul_event, uint32_t ul_fault) |
Enable the interrupt of a channel counter event and fault protection. More... | |
uint32_t | pwm_channel_get_counter (Pwm *p_pwm, pwm_channel_t *p_channel) |
Return channel counter value. More... | |
uint32_t | pwm_channel_get_interrupt_mask (Pwm *p_pwm) |
Get channel counter event and fault protection trigger interrupt mask. More... | |
uint32_t | pwm_channel_get_interrupt_status (Pwm *p_pwm) |
Get channel counter event and fault protection trigger interrupt status. More... | |
uint32_t | pwm_channel_get_status (Pwm *p_pwm) |
Check which PWM channel is enabled. More... | |
uint32_t | pwm_channel_init (Pwm *p_pwm, pwm_channel_t *p_channel) |
Initialize one PWM channel. More... | |
void | pwm_channel_update_dead_time (Pwm *p_pwm, pwm_channel_t *p_channel, uint16_t us_deadtime_pwmh, uint16_t us_deadtime_pwml) |
Change dead-time value for PWM outputs. More... | |
uint32_t | pwm_channel_update_duty (Pwm *p_pwm, pwm_channel_t *p_channel, uint32_t ul_duty) |
Change the duty cycle of the PWM channel. More... | |
void | pwm_channel_update_output (Pwm *p_pwm, pwm_channel_t *p_channel, pwm_output_t *p_output, bool b_sync) |
Change output selection of the PWM channel. More... | |
uint32_t | pwm_channel_update_period (Pwm *p_pwm, pwm_channel_t *p_channel, uint32_t ul_period) |
Change the period of the PWM channel. More... | |
void | pwm_channel_update_polarity_mode (Pwm *p_pwm, pwm_channel_t *p_channel, bool polarity_inversion_flag, pwm_level_t polarity_value) |
Change polarity mode. More... | |
void | pwm_channel_update_spread (Pwm *p_pwm, pwm_channel_t *p_channel, uint32_t ul_spread) |
Change spread spectrum value. More... | |
static uint32_t | pwm_clocks_generate (uint32_t ul_frequency, uint32_t ul_mck) |
Find a prescaler/divisor couple to generate the desired ul_frequency from ul_mck. More... | |
uint32_t | pwm_cmp_change_setting (Pwm *p_pwm, pwm_cmp_t *p_cmp) |
Change the setting of PWM comparison. More... | |
void | pwm_cmp_disable_interrupt (Pwm *p_pwm, uint32_t ul_sources, pwm_cmp_interrupt_t type) |
Disable the interrupt of comparison. More... | |
void | pwm_cmp_enable_interrupt (Pwm *p_pwm, uint32_t ul_sources, pwm_cmp_interrupt_t type) |
Enable the interrupt of comparison. More... | |
uint32_t | pwm_cmp_get_period_counter (Pwm *p_pwm, uint32_t ul_cmp_unit) |
Report the value of the comparison period counter. More... | |
uint32_t | pwm_cmp_get_update_counter (Pwm *p_pwm, uint32_t ul_cmp_unit) |
Report the value of the comparison update period counter. More... | |
uint32_t | pwm_cmp_init (Pwm *p_pwm, pwm_cmp_t *p_cmp) |
Initialize PWM comparison unit. More... | |
void | pwm_disable_protect (Pwm *p_pwm, uint32_t ul_group) |
Disable PWM write protect. More... | |
void | pwm_enable_protect (Pwm *p_pwm, uint32_t ul_group, bool b_sw) |
Enable PWM write protect. More... | |
void | pwm_fault_clear_status (Pwm *p_pwm, pwm_fault_id_t id) |
Clear a fault input. More... | |
pwm_level_t | pwm_fault_get_input_level (Pwm *p_pwm, pwm_fault_id_t id) |
Get the level of a fault input. More... | |
uint32_t | pwm_fault_get_status (Pwm *p_pwm) |
Get fault status. More... | |
uint32_t | pwm_fault_init (Pwm *p_pwm, pwm_fault_t *p_fault) |
Initialize the behavior of a fault input. More... | |
uint32_t | pwm_get_interrupt_mask (Pwm *p_pwm) |
Get interrupt mask of PDC transfer, synchronous channels and comparison. More... | |
uint32_t | pwm_get_interrupt_status (Pwm *p_pwm) |
Get interrupt status of PDC transfer, synchronous channels and comparison. More... | |
bool | pwm_get_protect_status (Pwm *p_pwm, pwm_protect_t *p_protect) |
Get PWM write protect status. More... | |
uint32_t | pwm_init (Pwm *p_pwm, pwm_clock_t *clock_config) |
Initialize the PWM source clock (clock A and clock B). More... | |
void | pwm_pdc_disable_interrupt (Pwm *p_pwm, uint32_t ul_sources) |
Disable the interrupt of PDC transfer. More... | |
void | pwm_pdc_enable_interrupt (Pwm *p_pwm, uint32_t ul_sources) |
Enable the interrupt of PDC transfer. More... | |
void | pwm_pdc_set_request_mode (Pwm *p_pwm, pwm_pdc_request_mode_t request_mode, uint32_t ul_cmp_unit) |
Set PDC transfer request mode. More... | |
void | pwm_set_dma_duty (Pwm *p_pwm, uint32_t ul_dma_duty_value) |
Set dma duty. More... | |
void | pwm_set_ext_trigger_mode (Pwm *p_pwm, pwm_channel_t *p_channel, uint32_t ul_mode) |
set external trigger mode. More... | |
void | pwm_stepper_motor_init (Pwm *p_pwm, pwm_stepper_motor_pair_t pair, bool b_enable_gray, bool b_down) |
Initialize PWM stepper motor mode. More... | |
void | pwm_sync_change_period (Pwm *p_pwm, uint32_t ul_update_period) |
Change the wanted time between each update of the synchronous channels. More... | |
void | pwm_sync_disable_interrupt (Pwm *p_pwm, uint32_t ul_sources) |
Disable the interrupt of synchronous channels. More... | |
void | pwm_sync_enable_interrupt (Pwm *p_pwm, uint32_t ul_sources) |
Enable the interrupt of synchronous channel. More... | |
uint32_t | pwm_sync_get_period_counter (Pwm *p_pwm) |
Get the value of the synchronization update period counter. More... | |
uint32_t | pwm_sync_init (Pwm *p_pwm, pwm_sync_update_mode_t mode, uint32_t ul_update_period) |
Initialize synchronous channels update mode and period. More... | |
void | pwm_sync_unlock_update (Pwm *p_pwm) |
Unlock the update of synchronous channels. More... | |