11#include "hardware/structs/adc.h"
58#ifndef PARAM_ASSERTIONS_ENABLED_HARDWARE_ADC
59#ifdef PARAM_ASSERTIONS_ENABLED_ADC
60#define PARAM_ASSERTIONS_ENABLED_HARDWARE_ADC PARAM_ASSERTIONS_ENABLED_ADC
62#define PARAM_ASSERTIONS_ENABLED_HARDWARE_ADC 0
69#ifndef ADC_TEMPERATURE_CHANNEL_NUM
70#define ADC_TEMPERATURE_CHANNEL_NUM (NUM_ADC_CHANNELS - 1)
74#ifndef PICO_ADC_CLKDIV_ROUND_NEAREST
75#define PICO_ADC_CLKDIV_ROUND_NEAREST PICO_CLKDIV_ROUND_NEAREST
96 invalid_params_if(HARDWARE_ADC, gpio < ADC_BASE_PIN || gpio >= ADC_BASE_PIN + NUM_ADC_CHANNELS - 1);
119 valid_params_if(HARDWARE_ADC, input < NUM_ADC_CHANNELS);
120 hw_write_masked(&adc_hw->cs, input << ADC_CS_AINSEL_LSB, ADC_CS_AINSEL_BITS);
138 return (adc_hw->cs & ADC_CS_AINSEL_BITS) >> ADC_CS_AINSEL_LSB;
151 valid_params_if(HARDWARE_ADC, input_mask < (1 << NUM_ADC_CHANNELS));
152 hw_write_masked(&adc_hw->cs, input_mask << ADC_CS_RROBIN_LSB, ADC_CS_RROBIN_BITS);
178 while (!(adc_hw->cs & ADC_CS_READY_BITS))
181 return (uint16_t) adc_hw->result;
205 invalid_params_if(HARDWARE_ADC, clkdiv >= 1 << REG_FIELD_WIDTH(ADC_DIV_INT));
206 const int frac_bit_count = REG_FIELD_WIDTH(ADC_DIV_FRAC);
207#if PICO_ADC_CLKDIV_ROUND_NEAREST
208 clkdiv += 0.5f / (1 << frac_bit_count);
210 adc_hw->div = (uint32_t)(clkdiv * (
float) (1 << frac_bit_count));
232 static inline void adc_fifo_setup(
bool en,
bool dreq_en, uint16_t dreq_thresh,
bool err_in_fifo,
bool byte_shift) {
234 (bool_to_bit(en) << ADC_FCS_EN_LSB) |
235 (bool_to_bit(dreq_en) << ADC_FCS_DREQ_EN_LSB) |
236 (((uint)dreq_thresh) << ADC_FCS_THRESH_LSB) |
237 (bool_to_bit(err_in_fifo) << ADC_FCS_ERR_LSB) |
238 (bool_to_bit(byte_shift) << ADC_FCS_SHIFT_LSB),
240 ADC_FCS_DREQ_EN_BITS |
241 ADC_FCS_THRESH_BITS |
253 return adc_hw->fcs & ADC_FCS_EMPTY_BITS;
269 return (adc_hw->fcs & ADC_FCS_LEVEL_BITS) >> ADC_FCS_LEVEL_LSB;
278 return (uint16_t)adc_hw->fifo;
289 return (uint16_t)adc_hw->fifo;
299 while (!(adc_hw->cs & ADC_CS_READY_BITS))
311 adc_hw->inte = !!enabled;
static void adc_set_round_robin(uint input_mask)
Round Robin sampling selector.
Definition adc.h:150
static void adc_fifo_setup(bool en, bool dreq_en, uint16_t dreq_thresh, bool err_in_fifo, bool byte_shift)
Setup the ADC FIFO.
Definition adc.h:232
void adc_init(void)
Initialise the ADC HW.
Definition adc.c:11
static void adc_set_clkdiv(float clkdiv)
Set the ADC Clock divisor.
Definition adc.h:204
static void adc_set_temp_sensor_enabled(bool enable)
Enable the onboard temperature sensor.
Definition adc.h:161
static void adc_select_input(uint input)
ADC input select.
Definition adc.h:118
static void adc_run(bool run)
Enable or disable free-running sampling mode.
Definition adc.h:189
static uint16_t adc_fifo_get_blocking(void)
Wait for the ADC FIFO to have data.
Definition adc.h:286
static uint16_t adc_fifo_get(void)
Get ADC result from FIFO.
Definition adc.h:277
static uint adc_get_selected_input(void)
Get the currently selected ADC input channel.
Definition adc.h:137
static void adc_gpio_init(uint gpio)
Initialise the gpio for use as an ADC pin.
Definition adc.h:95
static void adc_fifo_drain(void)
Drain the ADC FIFO.
Definition adc.h:297
static uint16_t adc_read(void)
Perform a single conversion.
Definition adc.h:175
static void adc_irq_set_enabled(bool enabled)
Enable/Disable ADC interrupts.
Definition adc.h:310
static uint8_t adc_fifo_get_level(void)
Get number of entries in the ADC FIFO.
Definition adc.h:268
static bool adc_fifo_is_empty(void)
Check FIFO empty state.
Definition adc.h:252
static __force_inline void hw_set_bits(io_rw_32 *addr, uint32_t mask)
Atomically set the specified bits to 1 in a HW register.
Definition address_mapped.h:135
static __force_inline void hw_write_masked(io_rw_32 *addr, uint32_t values, uint32_t write_mask)
Set new values for a sub-set of the bits in a HW register.
Definition address_mapped.h:171
static __force_inline void hw_clear_bits(io_rw_32 *addr, uint32_t mask)
Atomically clear the specified bits to 0 in a HW register.
Definition address_mapped.h:145
void gpio_set_function(uint gpio, gpio_function_t fn)
Select GPIO function.
Definition gpio.c:38
void gpio_set_input_enabled(uint gpio, bool enabled)
Enable GPIO input.
Definition gpio.c:270
static void gpio_disable_pulls(uint gpio)
Disable pulls on specified GPIO.
Definition gpio.h:337
@ GPIO_FUNC_NULL
Select NULL as GPIO pin function.
Definition io_bank0.h:41