periph_cpu.h

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/*
 * SPDX-FileCopyrightText: 2025 Tom Hert <git@annsann.eu>
 * SPDX-FileCopyrightText: 2025 HAW Hamburg
 * SPDX-License-Identifier: LGPL-2.1-only
 */
 
#pragma once
 
#include <inttypes.h>
 
#define HAVE_GPIO_T
typedef uint32_t gpio_t;
 
#define GPIO_PIN(port, pin)     (((port) & 0) | (pin))
 
#define _u(x) ((uint32_t)(x))
 
#ifdef RP2350_USE_RISCV
#  include "periph_cpu_common.h"
#  include "xh3irq.h"
#endif
#include "cpu.h"
#include "core_cm33.h" /* Trick RP2350 into believing the file exists on RISCV */
#include "RP2350.h"
#include "helpers.h"
#include "gpio_conf.h"
#include "clock_conf.h"
#include "uart_conf.h"
 
#if !(defined(RP2350_USE_ARM) || defined(RP2350_USE_RISCV))
#  error "Either RP2350_USE_ARM or RP2350_USE_RISCV must be defined"
#endif
 
#if (defined(RP2350_USE_ARM) && defined(RP2350_USE_RISCV))
#  error "Only one of RP2350_USE_ARM or RP2350_USE_RISCV can be defined"
#endif
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define OSC_DEBUG_PIN_ID 15u
 
#define RESET_PLL_SYS (1u << 14u)
 
#define RESET_PADS_BANK0 (1u << 9u)
 
#define RESET_UART0 (1u << 26u)
 
#define RESET_UART1 (1u << 27u)
 
#define RESET_IO_BANK0 (1u << 6u)
 
#define PADS_BANK0_GPIO0_IE_BITS (1u << 6u)
 
#define PADS_BANK0_ISO_BITS (1u << 8u)
 
void rp2350_init(void);
 
static inline uint32_t* calculate_gpio_pad_register_addr(gpio_t pin)
{
    /* Each pin has a 4 byte register, so we can calculate the address
     * by adding 4 bytes for each pin, starting at the base address of PADS_BANK0
     * and adding 4 bytes to skip VOLTAGE_SELECT */
    return (uint32_t*) (PADS_BANK0_BASE + (4 * (pin + 1)));
}
 
static uint32_t calculate_gpio_io_status_register_addr(gpio_t pin) {
    /* Each status register is followed by a ctrl register */
    return IO_BANK0_BASE + (8 * pin);
}
 
static inline uint32_t* calculate_gpio_io_ctrl_register_addr(gpio_t pin) {
    /* Each pin has a 8 byte register (4 Bytes of Status, 4 Bytes of CTRL),
     * so we can calculate the address by adding 8 bytes for each pin,
     * starting at the base address of IO_BANK0 */
    return (uint32_t*) (calculate_gpio_io_status_register_addr(pin) + 4);
}
 
#ifdef __cplusplus
}
#endif