src/rp2350/hardware_structs/include/hardware/structs/adc.h

// THIS HEADER FILE IS AUTOMATICALLY GENERATED -- DO NOT EDIT

/**
 * Copyright (c) 2024 Raspberry Pi Ltd.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */
#ifndef _HARDWARE_STRUCTS_ADC_H
#define _HARDWARE_STRUCTS_ADC_H

/**
 * \file rp2350/adc.h
 */

#include "hardware/address_mapped.h"
#include "hardware/regs/adc.h"

// Reference to datasheet: https://datasheets.raspberrypi.com/rp2350/rp2350-datasheet.pdf#tab-registerlist_adc
//
// The _REG_ macro is intended to help make the register navigable in your IDE (for example, using the "Go to Definition" feature)
// _REG_(x) will link to the corresponding register in hardware/regs/adc.h.
//
// Bit-field descriptions are of the form:
// BITMASK [BITRANGE] FIELDNAME (RESETVALUE) DESCRIPTION

typedef struct {
    _REG_(ADC_CS_OFFSET) // ADC_CS
    // ADC Control and Status
    // 0x01ff0000 [24:16] RROBIN       (0x000) Round-robin sampling
    // 0x0000f000 [15:12] AINSEL       (0x0) Select analog mux input
    // 0x00000400 [10]    ERR_STICKY   (0) Some past ADC conversion encountered an error
    // 0x00000200 [9]     ERR          (0) The most recent ADC conversion encountered an error;...
    // 0x00000100 [8]     READY        (0) 1 if the ADC is ready to start a new conversion
    // 0x00000008 [3]     START_MANY   (0) Continuously perform conversions whilst this bit is 1
    // 0x00000004 [2]     START_ONCE   (0) Start a single conversion
    // 0x00000002 [1]     TS_EN        (0) Power on temperature sensor
    // 0x00000001 [0]     EN           (0) Power on ADC and enable its clock
    io_rw_32 cs;
 
    _REG_(ADC_RESULT_OFFSET) // ADC_RESULT
    // Result of most recent ADC conversion
    // 0x00000fff [11:0]  RESULT       (0x000) 
    io_ro_32 result;
 
    _REG_(ADC_FCS_OFFSET) // ADC_FCS
    // FIFO control and status
    // 0x0f000000 [27:24] THRESH       (0x0) DREQ/IRQ asserted when level >= threshold
    // 0x000f0000 [19:16] LEVEL        (0x0) The number of conversion results currently waiting in the FIFO
    // 0x00000800 [11]    OVER         (0) 1 if the FIFO has been overflowed
    // 0x00000400 [10]    UNDER        (0) 1 if the FIFO has been underflowed
    // 0x00000200 [9]     FULL         (0) 
    // 0x00000100 [8]     EMPTY        (0) 
    // 0x00000008 [3]     DREQ_EN      (0) If 1: assert DMA requests when FIFO contains data
    // 0x00000004 [2]     ERR          (0) If 1: conversion error bit appears in the FIFO alongside...
    // 0x00000002 [1]     SHIFT        (0) If 1: FIFO results are right-shifted to be one byte in size
    // 0x00000001 [0]     EN           (0) If 1: write result to the FIFO after each conversion
    io_rw_32 fcs;
 
    _REG_(ADC_FIFO_OFFSET) // ADC_FIFO
    // Conversion result FIFO
    // 0x00008000 [15]    ERR          (-) 1 if this particular sample experienced a conversion error
    // 0x00000fff [11:0]  VAL          (-) 
    io_ro_32 fifo;
 
    _REG_(ADC_DIV_OFFSET) // ADC_DIV
    // Clock divider
    // 0x00ffff00 [23:8]  INT          (0x0000) Integer part of clock divisor
    // 0x000000ff [7:0]   FRAC         (0x00) Fractional part of clock divisor
    io_rw_32 div;
 
    _REG_(ADC_INTR_OFFSET) // ADC_INTR
    // Raw Interrupts
    // 0x00000001 [0]     FIFO         (0) Triggered when the sample FIFO reaches a certain level
    io_ro_32 intr;
 
    _REG_(ADC_INTE_OFFSET) // ADC_INTE
    // Interrupt Enable
    // 0x00000001 [0]     FIFO         (0) Triggered when the sample FIFO reaches a certain level
    io_rw_32 inte;
 
    _REG_(ADC_INTF_OFFSET) // ADC_INTF
    // Interrupt Force
    // 0x00000001 [0]     FIFO         (0) Triggered when the sample FIFO reaches a certain level
    io_rw_32 intf;
 
    _REG_(ADC_INTS_OFFSET) // ADC_INTS
    // Interrupt status after masking & forcing
    // 0x00000001 [0]     FIFO         (0) Triggered when the sample FIFO reaches a certain level
    io_ro_32 ints;
} adc_hw_t;

#define adc_hw ((adc_hw_t *)ADC_BASE)
static_assert(sizeof (adc_hw_t) == 0x0024, "");

#endif // _HARDWARE_STRUCTS_ADC_H