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v2.2.0 (RP2040)
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rosc.h
// THIS HEADER FILE IS AUTOMATICALLY GENERATED -- DO NOT EDIT
#ifndef _HARDWARE_STRUCTS_ROSC_H
#define _HARDWARE_STRUCTS_ROSC_H
#include "hardware/address_mapped.h"
#include "hardware/regs/rosc.h"
// Reference to datasheet: https://datasheets.raspberrypi.com/rp2040/rp2040-datasheet.pdf#tab-registerlist_rosc
//
// 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/rosc.h.
//
// Bit-field descriptions are of the form:
// BITMASK [BITRANGE] FIELDNAME (RESETVALUE) DESCRIPTION
typedef struct {
_REG_(ROSC_CTRL_OFFSET) // ROSC_CTRL
// Ring Oscillator control
// 0x00fff000 [23:12] ENABLE (-) On power-up this field is initialised to ENABLE +
// 0x00000fff [11:0] FREQ_RANGE (0xaa0) Controls the number of delay stages in the ROSC ring +
io_rw_32 ctrl;
_REG_(ROSC_FREQA_OFFSET) // ROSC_FREQA
// Ring Oscillator frequency control A
// 0xffff0000 [31:16] PASSWD (0x0000) Set to 0x9696 to apply the settings +
// 0x00007000 [14:12] DS3 (0x0) Stage 3 drive strength
// 0x00000700 [10:8] DS2 (0x0) Stage 2 drive strength
// 0x00000070 [6:4] DS1 (0x0) Stage 1 drive strength
// 0x00000007 [2:0] DS0 (0x0) Stage 0 drive strength
io_rw_32 freqa;
_REG_(ROSC_FREQB_OFFSET) // ROSC_FREQB
// Ring Oscillator frequency control B
// 0xffff0000 [31:16] PASSWD (0x0000) Set to 0x9696 to apply the settings +
// 0x00007000 [14:12] DS7 (0x0) Stage 7 drive strength
// 0x00000700 [10:8] DS6 (0x0) Stage 6 drive strength
// 0x00000070 [6:4] DS5 (0x0) Stage 5 drive strength
// 0x00000007 [2:0] DS4 (0x0) Stage 4 drive strength
io_rw_32 freqb;
_REG_(ROSC_DORMANT_OFFSET) // ROSC_DORMANT
// Ring Oscillator pause control
// 0xffffffff [31:0] DORMANT (-) This is used to save power by pausing the ROSC +
io_rw_32 dormant;
_REG_(ROSC_DIV_OFFSET) // ROSC_DIV
// Controls the output divider
// 0x00000fff [11:0] DIV (-) set to 0xaa0 + div where +
io_rw_32 div;
_REG_(ROSC_PHASE_OFFSET) // ROSC_PHASE
// Controls the phase shifted output
// 0x00000ff0 [11:4] PASSWD (0x00) set to 0xaa +
// 0x00000008 [3] ENABLE (1) enable the phase-shifted output +
// 0x00000004 [2] FLIP (0) invert the phase-shifted output +
// 0x00000003 [1:0] SHIFT (0x0) phase shift the phase-shifted output by SHIFT input clocks +
io_rw_32 phase;
_REG_(ROSC_STATUS_OFFSET) // ROSC_STATUS
// Ring Oscillator Status
// 0x80000000 [31] STABLE (0) Oscillator is running and stable
// 0x01000000 [24] BADWRITE (0) An invalid value has been written to CTRL_ENABLE or...
// 0x00010000 [16] DIV_RUNNING (-) post-divider is running +
// 0x00001000 [12] ENABLED (-) Oscillator is enabled but not necessarily running and stable +
io_rw_32 status;
_REG_(ROSC_RANDOMBIT_OFFSET) // ROSC_RANDOMBIT
// Returns a 1 bit random value
// 0x00000001 [0] RANDOMBIT (1)
io_ro_32 randombit;
_REG_(ROSC_COUNT_OFFSET) // ROSC_COUNT
// A down counter running at the ROSC frequency which counts to zero and stops.
// 0x000000ff [7:0] COUNT (0x00)
io_rw_32 count;
} rosc_hw_t;
#define rosc_hw ((rosc_hw_t *)ROSC_BASE)
static_assert(sizeof (rosc_hw_t) == 0x0024, "");
#endif // _HARDWARE_STRUCTS_ROSC_H
address_mapped.h
rosc_hw_t
Definition rosc.h:26