sdadc.c File Reference

SAM Sigma-Delta Analog-to-Digital Converter (SDADC) Driver.

Copyright (c) 2015-2018 Microchip Technology Inc. and its subsidiaries.

#include "sdadc.h"

Functions
static void	_sdadc_configure_ain_pin (uint32_t pin)
static enum status_code	_sdadc_set_config (struct sdadc_module *const module_inst, struct sdadc_config *const config)
enum status_code	sdadc_init (struct sdadc_module *const module_inst, Sdadc *hw, struct sdadc_config *config)
	Initializes the SDADC. More...

static void _sdadc_configure_ain_pin ( uint32_t  pin )

inlinestatic

Configure MUX settings for the analog pins

This function will set the given SDADC input pins to the analog function in the pinmux, giving the SDADC access to the analog signal

Parameters

[in]

pin

AINxx pin to configure

References system_pinmux_config::input_pull, system_pinmux_config::mux_position, system_pinmux_get_config_defaults(), SYSTEM_PINMUX_PIN_PULL_NONE, and system_pinmux_pin_set_config().

Referenced by _sdadc_set_config().

static enum status_code _sdadc_set_config ( struct sdadc_module *const  module_inst, struct sdadc_config *const  config  )

static

Writes an SDADC configuration to the hardware module

Writes out a given SDADC module configuration to the hardware module.

Parameters

[out]	module_inst	Pointer to the SDADC software instance struct
[in]	config	Pointer to configuration struct

Returns

Status of the configuration procedure.

Return values

STATUS_OK	The configuration was successful
STATUS_ERR_INVALID_ARG	Invalid argument(s) were provided

References _sdadc_configure_ain_pin(), sdadc_config::clock_prescaler, sdadc_config::clock_source, sdadc_config::correction, sdadc_config::event_action, sdadc_config::freerunning, sdadc_correction_config::gain_correction, sdadc_config::mux_input, sdadc_correction_config::offset_correction, sdadc_config::on_command, sdadc_reference::on_ref_buffer, sdadc_config::osr, sdadc_reference::ref_range, sdadc_reference::ref_sel, sdadc_config::reference, sdadc_config::run_in_standby, sdadc_is_syncing(), SDADC_WINDOW_MODE_DISABLE, sdadc_config::seq_enable, sdadc_correction_config::shift_correction, sdadc_config::skip_count, system_gclk_chan_config::source_generator, STATUS_ERR_INVALID_ARG, STATUS_OK, system_gclk_chan_enable(), system_gclk_chan_get_config_defaults(), system_gclk_chan_set_config(), sdadc_config::window, sdadc_window_config::window_lower_value, sdadc_window_config::window_mode, and sdadc_window_config::window_upper_value.

Referenced by sdadc_init().