src/rp2350/hardware_structs/include/hardware/structs/spi.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_SPI_H
#define _HARDWARE_STRUCTS_SPI_H

/**
 * \file rp2350/spi.h
 */

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

// Reference to datasheet: https://datasheets.raspberrypi.com/rp2350/rp2350-datasheet.pdf#tab-registerlist_spi
//
// 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/spi.h.
//
// Bit-field descriptions are of the form:
// BITMASK [BITRANGE] FIELDNAME (RESETVALUE) DESCRIPTION

typedef struct {
    _REG_(SPI_SSPCR0_OFFSET) // SPI_SSPCR0
    // Control register 0, SSPCR0 on page 3-4
    // 0x0000ff00 [15:8]  SCR          (0x00) Serial clock rate
    // 0x00000080 [7]     SPH          (0) SSPCLKOUT phase, applicable to Motorola SPI frame format only
    // 0x00000040 [6]     SPO          (0) SSPCLKOUT polarity, applicable to Motorola SPI frame format only
    // 0x00000030 [5:4]   FRF          (0x0) Frame format: 00 Motorola SPI frame format
    // 0x0000000f [3:0]   DSS          (0x0) Data Size Select: 0000 Reserved, undefined operation
    io_rw_32 cr0;
 
    _REG_(SPI_SSPCR1_OFFSET) // SPI_SSPCR1
    // Control register 1, SSPCR1 on page 3-5
    // 0x00000008 [3]     SOD          (0) Slave-mode output disable
    // 0x00000004 [2]     MS           (0) Master or slave mode select
    // 0x00000002 [1]     SSE          (0) Synchronous serial port enable: 0 SSP operation disabled
    // 0x00000001 [0]     LBM          (0) Loop back mode: 0 Normal serial port operation enabled
    io_rw_32 cr1;
 
    _REG_(SPI_SSPDR_OFFSET) // SPI_SSPDR
    // Data register, SSPDR on page 3-6
    // 0x0000ffff [15:0]  DATA         (-) Transmit/Receive FIFO: Read Receive FIFO
    io_rw_32 dr;
 
    _REG_(SPI_SSPSR_OFFSET) // SPI_SSPSR
    // Status register, SSPSR on page 3-7
    // 0x00000010 [4]     BSY          (0) PrimeCell SSP busy flag, RO: 0 SSP is idle
    // 0x00000008 [3]     RFF          (0) Receive FIFO full, RO: 0 Receive FIFO is not full
    // 0x00000004 [2]     RNE          (0) Receive FIFO not empty, RO: 0 Receive FIFO is empty
    // 0x00000002 [1]     TNF          (1) Transmit FIFO not full, RO: 0 Transmit FIFO is full
    // 0x00000001 [0]     TFE          (1) Transmit FIFO empty, RO: 0 Transmit FIFO is not empty
    io_ro_32 sr;
 
    _REG_(SPI_SSPCPSR_OFFSET) // SPI_SSPCPSR
    // Clock prescale register, SSPCPSR on page 3-8
    // 0x000000ff [7:0]   CPSDVSR      (0x00) Clock prescale divisor
    io_rw_32 cpsr;
 
    _REG_(SPI_SSPIMSC_OFFSET) // SPI_SSPIMSC
    // Interrupt mask set or clear register, SSPIMSC on page 3-9
    // 0x00000008 [3]     TXIM         (0) Transmit FIFO interrupt mask: 0 Transmit FIFO half empty...
    // 0x00000004 [2]     RXIM         (0) Receive FIFO interrupt mask: 0 Receive FIFO half full or...
    // 0x00000002 [1]     RTIM         (0) Receive timeout interrupt mask: 0 Receive FIFO not empty...
    // 0x00000001 [0]     RORIM        (0) Receive overrun interrupt mask: 0 Receive FIFO written...
    io_rw_32 imsc;
 
    _REG_(SPI_SSPRIS_OFFSET) // SPI_SSPRIS
    // Raw interrupt status register, SSPRIS on page 3-10
    // 0x00000008 [3]     TXRIS        (1) Gives the raw interrupt state, prior to masking, of the...
    // 0x00000004 [2]     RXRIS        (0) Gives the raw interrupt state, prior to masking, of the...
    // 0x00000002 [1]     RTRIS        (0) Gives the raw interrupt state, prior to masking, of the...
    // 0x00000001 [0]     RORRIS       (0) Gives the raw interrupt state, prior to masking, of the...
    io_ro_32 ris;
 
    _REG_(SPI_SSPMIS_OFFSET) // SPI_SSPMIS
    // Masked interrupt status register, SSPMIS on page 3-11
    // 0x00000008 [3]     TXMIS        (0) Gives the transmit FIFO masked interrupt state, after...
    // 0x00000004 [2]     RXMIS        (0) Gives the receive FIFO masked interrupt state, after...
    // 0x00000002 [1]     RTMIS        (0) Gives the receive timeout masked interrupt state, after...
    // 0x00000001 [0]     RORMIS       (0) Gives the receive over run masked interrupt status,...
    io_ro_32 mis;
 
    _REG_(SPI_SSPICR_OFFSET) // SPI_SSPICR
    // Interrupt clear register, SSPICR on page 3-11
    // 0x00000002 [1]     RTIC         (0) Clears the SSPRTINTR interrupt
    // 0x00000001 [0]     RORIC        (0) Clears the SSPRORINTR interrupt
    io_rw_32 icr;
 
    _REG_(SPI_SSPDMACR_OFFSET) // SPI_SSPDMACR
    // DMA control register, SSPDMACR on page 3-12
    // 0x00000002 [1]     TXDMAE       (0) Transmit DMA Enable
    // 0x00000001 [0]     RXDMAE       (0) Receive DMA Enable
    io_rw_32 dmacr;
} spi_hw_t;

#define spi0_hw ((spi_hw_t *)SPI0_BASE)
#define spi1_hw ((spi_hw_t *)SPI1_BASE)
static_assert(sizeof (spi_hw_t) == 0x0028, "");

#endif // _HARDWARE_STRUCTS_SPI_H