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Merge pull request #17441 from aabadie/pr/cpu/stm32_periph_include_cleanup

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cpu/stm32: split periph_cpu.h in sub headers
This commit is contained in:
Alexandre Abadie 2022-01-03 14:32:15 +01:00 committed by GitHub
commit 7eef2bbd50
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14 changed files with 1602 additions and 1099 deletions
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170
cpu/stm32/include/periph/cpu_common.h Normal file
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/*
* Copyright (C) 2016 Freie Universität Berlin
* 2017 OTA keys S.A.
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_stm32
* @{
*
* @file
* @brief Common CPU definitions for the STM32 family
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @author Vincent Dupont <vincent@otakeys.com>
*/
#ifndef PERIPH_CPU_COMMON_H
#define PERIPH_CPU_COMMON_H
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifdef Doxygen
/**
* @brief Starting address of the ROM bootloader
* see application note AN2606
*/
#define STM32_BOOTLOADER_ADDR
#endif
/**
* @brief Length of the CPU_ID in octets
*
* This is the same for all members of the stm32 family
*/
#define CPUID_LEN (12U)
/**
* @brief Starting address of the CPU ID
*/
#ifndef CPUID_ADDR
#define CPUID_ADDR (UID_BASE)
#endif
/**
* @brief CPU specific LSI clock speed
*/
#if defined(CPU_FAM_STM32F0) || defined (CPU_FAM_STM32F1) || \
defined(CPU_FAM_STM32F3)
#define CLOCK_LSI (40000U)
#elif defined(CPU_FAM_STM32L0) || defined(CPU_FAM_STM32L1)
#define CLOCK_LSI (37000U)
#elif defined(CPU_FAM_STM32F2) || defined(CPU_FAM_STM32F4) || \
defined(CPU_FAM_STM32F7) || defined(CPU_FAM_STM32L4) || \
defined(CPU_FAM_STM32WB) || defined(CPU_FAM_STM32G4) || \
defined(CPU_FAM_STM32G0) || defined(CPU_FAM_STM32L5) || \
defined(CPU_FAM_STM32U5) || defined(CPU_FAM_STM32MP1) || \
defined(CPU_FAM_STM32WL)
#define CLOCK_LSI (32000U)
#else
#error "error: LSI clock speed not defined for your target CPU"
#endif
/**
* @brief Available peripheral buses
*/
typedef enum {
APB1, /**< APB1 bus */
APB2, /**< APB2 bus */
#if defined(CPU_FAM_STM32WL) || defined(CPU_FAM_STM32U5)
APB3,
#endif
#if defined(CPU_FAM_STM32L4) || defined(CPU_FAM_STM32WB) || \
defined(CPU_FAM_STM32G4) || defined(CPU_FAM_STM32G0) || \
defined(CPU_FAM_STM32L5) || defined(CPU_FAM_STM32U5) || \
defined(CPU_FAM_STM32WL)
APB12, /**< AHB1 bus, second register */
#endif
#if defined(CPU_FAM_STM32L0) || defined(CPU_FAM_STM32G0)
AHB, /**< AHB bus */
IOP, /**< IOP bus */
#elif defined(CPU_FAM_STM32L1) || defined(CPU_FAM_STM32F1) || \
defined(CPU_FAM_STM32F0) || defined(CPU_FAM_STM32F3)
AHB, /**< AHB bus */
#elif defined(CPU_FAM_STM32F2) || defined(CPU_FAM_STM32F4) || \
defined(CPU_FAM_STM32L4) || defined(CPU_FAM_STM32F7) || \
defined(CPU_FAM_STM32WB) || defined(CPU_FAM_STM32G4) || \
defined(CPU_FAM_STM32L5) || defined(CPU_FAM_STM32U5) || \
defined(CPU_FAM_STM32WL)
AHB1, /**< AHB1 bus */
AHB2, /**< AHB2 bus */
#if defined(CPU_FAM_STM32U5)
AHB22, /**< AHB2 bus, second register */
#endif
AHB3, /**< AHB3 bus */
#elif defined(CPU_FAM_STM32MP1)
AHB1, /**< AHB1 bus */
AHB2, /**< AHB2 bus */
AHB3, /**< AHB3 bus */
#else
#warning "unsupported stm32XX family"
#endif
#if defined(CPU_FAM_STM32WB) || defined(CPU_FAM_STM32MP1)
AHB4, /**< AHB4 bus */
#endif
} bus_t;
/**
* @brief Get the actual bus clock frequency for the APB buses
*
* @param[in] bus target APBx bus
*
* @return bus clock frequency in Hz
*/
uint32_t periph_apb_clk(uint8_t bus);
/**
* @brief Get the actual timer clock frequency
*
* @param[in] bus corresponding APBx bus
*
* @return timer clock frequency in Hz
*/
uint32_t periph_timer_clk(uint8_t bus);
/**
* @brief Enable the given peripheral clock
*
* @param[in] bus bus the peripheral is connected to
* @param[in] mask bit in the RCC enable register
*/
void periph_clk_en(bus_t bus, uint32_t mask);
/**
* @brief Disable the given peripheral clock
*
* @param[in] bus bus the peripheral is connected to
* @param[in] mask bit in the RCC enable register
*/
void periph_lpclk_dis(bus_t bus, uint32_t mask);
/**
* @brief Enable the given peripheral clock in low power mode
*
* @param[in] bus bus the peripheral is connected to
* @param[in] mask bit in the RCC enable register
*/
void periph_lpclk_en(bus_t bus, uint32_t mask);
/**
* @brief Disable the given peripheral clock in low power mode
*
* @param[in] bus bus the peripheral is connected to
* @param[in] mask bit in the RCC enable register
*/
void periph_clk_dis(bus_t bus, uint32_t mask);
#ifdef __cplusplus
}
#endif
#endif /* PERIPH_CPU_COMMON_H */
/** @} */

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cpu/stm32/include/periph/cpu_dma.h Normal file
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/*
* Copyright (C) 2016 Freie Universität Berlin
* 2017 OTA keys S.A.
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_stm32
* @{
*
* @file
* @brief DMA CPU specific definitions for the STM32 family
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @author Vincent Dupont <vincent@otakeys.com>
*/
#ifndef PERIPH_CPU_DMA_H
#define PERIPH_CPU_DMA_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief DMA configuration
*/
typedef struct {
/** DMA stream on stm32f2/4/7, channel on others
* STM32F2/4/7:
* - 0: DMA1 / Stream0
* - 1: DMA1 / Stream1
* - ...
* - 7: DMA1 / Stream7
* - 8: DAM2 / Stream0
* - ...
* - 15: DMA2 / Stream7
* STM32F0/1/L0/1/4:
* - 0: DMA1 / Channel1
* - ...
* - 4: DMA1 / Channel5
* - ...
* - 6: DMA1 / Channel7
* - 7: Reserved
* - 8: DMA2 / Channel1
* - ...
* - 12: DMA2 / Channel5
* - ...
* - 14: DMA2 / Channel7
*/
int stream;
} dma_conf_t;
/**
* @brief DMA type
*/
typedef unsigned dma_t;
/**
* @brief DMA modes
*/
typedef enum {
DMA_PERIPH_TO_MEM = 0, /**< Peripheral to memory */
DMA_MEM_TO_PERIPH = 1, /**< Memory to peripheral */
DMA_MEM_TO_MEM = 2, /**< Memory to memory */
} dma_mode_t;
/**
* @brief DMA channel/trigger configuration for DMA peripherals without
* channel/trigger filtering such as the stm32f1 and stm32f3.
*/
#define DMA_CHAN_CONFIG_UNSUPPORTED (UINT8_MAX)
/**
* @name DMA Increment modes
* @{
*/
#define DMA_INC_SRC_ADDR (0x04) /**< DMA increment source address */
#define DMA_INC_DST_ADDR (0x08) /**< DMA increment destination address */
#define DMA_INC_BOTH_ADDR (DMA_INC_SRC_ADDR | DMA_INC_DST_ADDR) /**< DMA increment source + destination address */
/** @} */
/**
* @name DMA data width
* @{
*/
#define DMA_DATA_WIDTH_BYTE (0x00) /**< Byte width */
#define DMA_DATA_WIDTH_HALF_WORD (0x01) /**< Half word width */
#define DMA_DATA_WIDTH_WORD (0x02) /**< Word width */
#define DMA_DATA_WIDTH_MASK (0x03) /**< Width mask */
#define DMA_DATA_WIDTH_SHIFT (0) /**< Width position */
/** @} */
#ifdef MODULE_PERIPH_DMA
/**
* @brief DMA stream not defined
*/
#define DMA_STREAM_UNDEF (UINT_MAX)
/**
* @brief Initialize DMA
*/
void dma_init(void);
/**
* @brief Execute a DMA transfer
*
* This function blocks until the transfer is completed. This is a convenience
* function which configure, start, wait and stop a DMA transfer.
*
* @param[in] dma logical DMA stream
* @param[in] chan DMA channel (on stm32f2/4/7, CxS or unused on others)
* @param[in] src source buffer
* @param[out] dst destination buffer
* @param[in] len length to transfer
* @param[in] mode DMA mode
* @param[in] flags DMA configuration
*
* @return < 0 on error, the number of transferred bytes otherwise
*/
int dma_transfer(dma_t dma, int chan, const volatile void *src, volatile void *dst, size_t len,
dma_mode_t mode, uint8_t flags);
/**
* @brief Acquire a DMA stream
*
* @param[in] dma logical DMA stream
*/
void dma_acquire(dma_t dma);
/**
* @brief Release a DMA stream
*
* @param[in] dma logical DMA stream
*/
void dma_release(dma_t dma);
/**
* @brief Start a DMA transfer on a stream
*
* Start a DMA transfer on a given stream. The stream must be configured first
* by a @p dma_configure call.
*
* @param[in] dma logical DMA stream
*/
void dma_start(dma_t dma);
/**
* @brief Suspend a DMA transfer on a stream
*
* @param[in] dma logical DMA stream
*
* @return the remaining number of bytes to transfer
*/
uint16_t dma_suspend(dma_t dma);
/**
* @brief Resume a suspended DMA transfer on a stream
*
* @param[in] dma logical DMA stream
* @param[in] reamaining the remaining number of bytes to transfer
*/
void dma_resume(dma_t dma, uint16_t remaining);
/**
* @brief Stop a DMA transfer on a stream
*
* @param[in] dma logical DMA stream
*/
void dma_stop(dma_t dma);
/**
* @brief Wait for the end of a transfer
*
* @param[in] dma logical DMA stream
*/
void dma_wait(dma_t dma);
/**
* @brief Configure a DMA stream for a new transfer
*
* @param[in] dma logical DMA stream
* @param[in] chan DMA channel (on stm32f2/4/7, CxS or unused on others)
* @param[in] src source buffer
* @param[out] dst destination buffer
* @param[in] len length to transfer
* @param[in] mode DMA mode
* @param[in] flags DMA configuration
*
* @return < 0 on error, 0 on success
*/
int dma_configure(dma_t dma, int chan, const volatile void *src, volatile void *dst, size_t len,
dma_mode_t mode, uint8_t flags);
/**
* @brief Low level initial DMA stream configuration
*
* This function is supposed to be used together with @ref dma_prepare. This
* function sets up the one-time configuration of a stream and @ref dma_prepare
* configures the per-transfer registers.
*
* @param[in] dma Logical DMA stream
* @param[in] chan DMA channel (on stm32f2/4/7, CxS or unused on others)
* @param[in] periph_addr Peripheral register address
* @param[in] mode DMA direction mode
* @param[in] width DMA transfer width
* @param[in] inc_periph Increment peripheral address after read/write
*/
void dma_setup(dma_t dma, int chan, void *periph_addr, dma_mode_t mode,
uint8_t width, bool inc_periph);
/**
* @brief Low level DMA transfer configuration
*
* @param[in] dma Logical DMA stream
* @param[in] mem Memory address
* @param[in] len Transfer length
* @param[in] inc_mem Increment the memory address after read/write
*/
void dma_prepare(dma_t dma, void *mem, size_t len, bool incr_mem);
#endif /* MODULE_PERIPH_DMA */
#ifdef __cplusplus
}
#endif
#endif /* PERIPH_CPU_DMA_H */
/** @} */

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cpu/stm32/include/periph/cpu_eth.h Normal file
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/*
* Copyright (C) 2016 Freie Universität Berlin
* 2017 OTA keys S.A.
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_stm32
* @{
*
* @file
* @brief Ethernet CPU specific definitions for the STM32 family
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @author Vincent Dupont <vincent@otakeys.com>
*/
#ifndef PERIPH_CPU_ETH_H
#define PERIPH_CPU_ETH_H
#include <stdint.h>
#include "periph/cpu_gpio.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief STM32 Ethernet configuration mode
*/
typedef enum {
MII = 18, /**< Configuration for MII */
RMII = 9, /**< Configuration for RMII */
SMI = 2, /**< Configuration for SMI */
} eth_mode_t;
/**
* @brief Ethernet Peripheral configuration
*/
typedef struct {
eth_mode_t mode; /**< Select configuration mode */
uint16_t speed; /**< Speed selection */
uint8_t dma; /**< Locical CMA Descriptor used for TX */
uint8_t dma_chan; /**< DMA channel used for TX */
uint8_t phy_addr; /**< PHY address */
gpio_t pins[]; /**< Pins to use. MII requires 18 pins,
RMII 9 and SMI 9. Not all speeds are
supported by all modes. */
} eth_conf_t;
/**
* @brief Layout of enhanced RX/TX DMA descriptor
*
* @note Don't confuse this with the normal RX/TX descriptor format.
* @warning The content of the status and control bits is different for RX and
* TX DMA descriptors
*/
typedef struct eth_dma_desc {
volatile uint32_t status; /**< Mostly status bits, some control bits */
volatile uint32_t control; /**< Control bits */
char * volatile buffer_addr; /**< RX/TX buffer */
struct eth_dma_desc * volatile desc_next; /**< Address of next DMA descriptor */
volatile uint32_t reserved1_ext; /**< RX: Extended status, TX: reserved */
volatile uint32_t reserved2; /**< Reserved for future use */
/**
* @brief Sub-second part of PTP timestamp of transmitted / sent frame
*
* For TX: If PTP timestamping is enabled and the TTSE bit in the
* transmit descriptor word 0 (struct eth_dma_desc::status) is set, the
* MAC will store the PTP timestamp of when the Start of Frame Delimiter
* was sent. The TTSS bit is send by the hardware if the timestamp was
* correctly set.
*
* For RX: If PTP timestamping is enabled, the timestamp of all received
* frames is captured.
*/
volatile uint32_t ts_low;
volatile uint32_t ts_high; /**< Second part of PTP timestamp */
} edma_desc_t;
/**
* @name Flags in the status word of the Ethernet enhanced RX DMA descriptor
* @{
*/
#define RX_DESC_STAT_LS (BIT8) /**< If set, descriptor is the last of a frame */
#define RX_DESC_STAT_FS (BIT9) /**< If set, descriptor is the first of a frame */
/**
* @brief Frame length
*
* The length of the frame in host memory order including CRC. Only valid if
* @ref RX_DESC_STAT_LS is set and @ref RX_DESC_STAT_DE is not set.
*/
#define RX_DESC_STAT_FL (0x3FFF0000) /* bits 16-29 */
#define RX_DESC_STAT_DE (BIT14) /**< If set, a frame too large to fit buffers given by descriptors was received */
#define RX_DESC_STAT_ES (BIT14) /**< If set, an error occurred during RX */
#define RX_DESC_STAT_OWN (BIT31) /**< If set, descriptor is owned by DMA, otherwise by CPU */
/** @} */
/**
* @name Flags in the control word of the Ethernet enhanced RX DMA descriptor
* @{
*/
/**
* @brief Indicates if RDES3 points to the next DMA descriptor (1), or to a second buffer (0)
*
* If the bit is set, RDES3 (@ref edma_desc_t::desc_next) will point to the
* next DMA descriptor rather than to a second frame-segment buffer. This is
* always set by the driver
*/
#define RX_DESC_CTRL_RCH (BIT14)
/** @} */
/**
* @name Flags in the status word of the Ethernet enhanced TX DMA descriptor
* @{
*/
#define TX_DESC_STAT_UF (BIT1) /**< If set, an underflow occurred while sending */
#define TX_DESC_STAT_EC (BIT8) /**< If set, TX was aborted due to excessive collisions (half-duplex only) */
#define TX_DESC_STAT_NC (BIT10) /**< If set, no carrier was detected (TX aborted) */
#define TX_DESC_STAT_ES (BIT15) /**< If set, one or more error occurred */
#define TX_DESC_STAT_TTSS (BIT17) /**< If set, the descriptor contains a valid PTP timestamp */
/**
* @brief Indicates if TDES3 points to the next DMA descriptor (1), or to a second buffer (0)
*
* If the bit is set, TDES3 (@ref edma_desc_t::desc_next) will point to the
* next DMA descriptor rather than to a second frame-segment buffer. This is
* always set by the driver
*/
#define TX_DESC_STAT_TCH (BIT20)
#define TX_DESC_STAT_TER (BIT21) /**< If set, DMA will return to first descriptor in ring afterwards */
/**
* @brief Checksum insertion control
*
* | Value | Meaning |
* |:------ |:----------------------------------------------------------------------------- |
* | `0b00` | Checksum insertion disabled |
* | `0b01` | Calculate and insert checksum in IPv4 header |
* | `0b10` | Calculate and insert IPv4 checksum, insert pre-calculated payload checksum |
* | `0b11 | Calculated and insert both IPv4 and payload checksum |
*/
#define TX_DESC_STAT_CIC (BIT22 | BIT23)
#define TX_DESC_STAT_TTSE (BIT25) /**< If set, an PTP timestamp is added to the descriptor after TX completed */
#define TX_DESC_STAT_FS (BIT28) /**< If set, buffer contains first segment of frame to transmit */
#define TX_DESC_STAT_LS (BIT29) /**< If set, buffer contains last segment of frame to transmit */
#define TX_DESC_STAT_IC (BIT30) /**< If set, trigger IRQ on completion */
#define TX_DESC_STAT_OWN (BIT31) /**< If set, descriptor is owned by DMA, otherwise by CPU */
/** @} */
#ifdef MODULE_PERIPH_ETH_COMMON
/**
* @brief Perform ETH initialization common to periph_stm32_eth and
* periph_ptp_clock
*/
void stm32_eth_common_init(void);
#endif /* MODULE_PERIPH_ETH_COMMON */
#ifdef __cplusplus
}
#endif
#endif /* PERIPH_CPU_ETH_H */
/** @} */

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cpu/stm32/include/periph/cpu_gpio.h Normal file
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/*
* Copyright (C) 2016 Freie Universität Berlin
* 2017 OTA keys S.A.
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_stm32
* @{
*
* @file
* @brief GPIO CPU definitions for the STM32 family
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @author Vincent Dupont <vincent@otakeys.com>
*/
#ifndef PERIPH_CPU_GPIO_H
#define PERIPH_CPU_GPIO_H
#include <stdint.h>
#include "cpu.h"
#ifdef __cplusplus
extern "C" {
#endif
#ifndef DOXYGEN
/**
* @brief Overwrite the default gpio_t type definition
* @{
*/
#define HAVE_GPIO_T
typedef uint32_t gpio_t;
/** @} */
#endif
/**
* @brief Definition of a fitting UNDEF value
*/
#define GPIO_UNDEF (0xffffffff)
/**
* @brief Define a CPU specific GPIO pin generator macro
*/
#if defined(CPU_FAM_STM32MP1)
#define GPIO_PIN(x, y) ((GPIOA_BASE + (x << 12)) | y)
#else
#define GPIO_PIN(x, y) ((GPIOA_BASE + (x << 10)) | y)
#endif
/**
* @brief Available GPIO ports
*/
enum {
#ifdef GPIOA
PORT_A = 0, /**< port A */
#endif
#ifdef GPIOB
PORT_B = 1, /**< port B */
#endif
#ifdef GPIOC
PORT_C = 2, /**< port C */
#endif
#ifdef GPIOD
PORT_D = 3, /**< port D */
#endif
#ifdef GPIOE
PORT_E = 4, /**< port E */
#endif
#ifdef GPIOF
PORT_F = 5, /**< port F */
#endif
#ifdef GPIOG
PORT_G = 6, /**< port G */
#endif
#ifdef GPIOH
PORT_H = 7, /**< port H */
#endif
#ifdef GPIOI
PORT_I = 8, /**< port I */
#endif
#ifdef GPIOJ
PORT_J = 9, /**< port J */
#endif
#ifdef GPIOK
PORT_K = 10, /**< port K */
#endif
};
/**
* @brief Available MUX values for configuring a pin's alternate function
*/
typedef enum {
#ifdef CPU_FAM_STM32F1
GPIO_AF_OUT_PP = 0xb, /**< alternate function output - push-pull */
GPIO_AF_OUT_OD = 0xf, /**< alternate function output - open-drain */
#else
GPIO_AF0 = 0, /**< use alternate function 0 */
GPIO_AF1, /**< use alternate function 1 */
GPIO_AF2, /**< use alternate function 2 */
GPIO_AF3, /**< use alternate function 3 */
GPIO_AF4, /**< use alternate function 4 */
GPIO_AF5, /**< use alternate function 5 */
GPIO_AF6, /**< use alternate function 6 */
GPIO_AF7, /**< use alternate function 7 */
#ifndef CPU_FAM_STM32F0
GPIO_AF8, /**< use alternate function 8 */
GPIO_AF9, /**< use alternate function 9 */
GPIO_AF10, /**< use alternate function 10 */
GPIO_AF11, /**< use alternate function 11 */
GPIO_AF12, /**< use alternate function 12 */
GPIO_AF13, /**< use alternate function 13 */
GPIO_AF14, /**< use alternate function 14 */
GPIO_AF15, /**< use alternate function 15 */
#endif
GPIO_AF_UNDEF /** an UNDEF value definition, e.g. for register
based spi */
#endif
} gpio_af_t;
#ifdef CPU_FAM_STM32F1
#ifndef DOXYGEN
/**
* @brief Generate GPIO mode bitfields
*
* We use 4 bit to determine the pin functions:
* - bit 4: ODR value
* - bit 2+3: in/out
* - bit 1: PU enable
* - bit 2: OD enable
*/
#define GPIO_MODE(mode, cnf, odr) (mode | (cnf << 2) | (odr << 4))
/**
* @brief Override GPIO mode options
*
* We use 4 bit to encode CNF and MODE.
* @{
*/
#define HAVE_GPIO_MODE_T
typedef enum {
GPIO_IN = GPIO_MODE(0, 1, 0), /**< input w/o pull R */
GPIO_IN_PD = GPIO_MODE(0, 2, 0), /**< input with pull-down */
GPIO_IN_PU = GPIO_MODE(0, 2, 1), /**< input with pull-up */
GPIO_OUT = GPIO_MODE(3, 0, 0), /**< push-pull output */
GPIO_OD = GPIO_MODE(3, 1, 0), /**< open-drain w/o pull R */
GPIO_OD_PU = (0xff) /**< not supported by HW */
} gpio_mode_t;
/** @} */
#endif /* ndef DOXYGEN */
/**
* @brief Override values for pull register configuration
* @{
*/
#define HAVE_GPIO_PP_T
typedef enum {
GPIO_NOPULL = 4, /**< do not use internal pull resistors */
GPIO_PULLUP = 9, /**< enable internal pull-up resistor */
GPIO_PULLDOWN = 8 /**< enable internal pull-down resistor */
} gpio_pp_t;
/** @} */
#else /* CPU_FAM_STM32F1 */
/**
* @brief Generate GPIO mode bitfields
*
* We use 5 bit to encode the mode:
* - bit 0+1: pin mode (input / output)
* - bit 2+3: pull resistor configuration
* - bit 4: output type (0: push-pull, 1: open-drain)
*/
#define GPIO_MODE(io, pr, ot) ((io << 0) | (pr << 2) | (ot << 4))
#ifndef DOXYGEN
/**
* @brief Override GPIO mode options
* @{
*/
#define HAVE_GPIO_MODE_T
typedef enum {
GPIO_IN = GPIO_MODE(0, 0, 0), /**< input w/o pull R */
GPIO_IN_PD = GPIO_MODE(0, 2, 0), /**< input with pull-down */
GPIO_IN_PU = GPIO_MODE(0, 1, 0), /**< input with pull-up */
GPIO_OUT = GPIO_MODE(1, 0, 0), /**< push-pull output */
GPIO_OD = GPIO_MODE(1, 0, 1), /**< open-drain w/o pull R */
GPIO_OD_PU = GPIO_MODE(1, 1, 1) /**< open-drain with pull-up */
} gpio_mode_t;
/** @} */
#endif /* ndef DOXYGEN */
#endif /* ndef CPU_FAM_STM32F1 */
#ifndef DOXYGEN
/**
* @brief Override flank configuration values
* @{
*/
#define HAVE_GPIO_FLANK_T
typedef enum {
GPIO_RISING = 1, /**< emit interrupt on rising flank */
GPIO_FALLING = 2, /**< emit interrupt on falling flank */
GPIO_BOTH = 3 /**< emit interrupt on both flanks */
} gpio_flank_t;
/** @} */
#endif /* ndef DOXYGEN */
/**
* @brief Configure the alternate function for the given pin
*
* @param[in] pin pin to configure
* @param[in] af alternate function to use
*/
void gpio_init_af(gpio_t pin, gpio_af_t af);
/**
* @brief Configure the given pin to be used as ADC input
*
* @param[in] pin pin to configure
*/
void gpio_init_analog(gpio_t pin);
#ifdef __cplusplus
}
#endif
#endif /* PERIPH_CPU_GPIO_H */
/** @} */

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/*
* Copyright (C) 2016 Freie Universität Berlin
* 2017 OTA keys S.A.
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_stm32
* @{
*
* @file
* @brief I2C CPU specific definitions for the STM32 family
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @author Vincent Dupont <vincent@otakeys.com>
*/
#ifndef PERIPH_CPU_I2C_H
#define PERIPH_CPU_I2C_H
#include <stdint.h>
#include "cpu.h"
#include "periph/cpu_gpio.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @name Use the shared I2C functions
* @{
*/
/** Use read reg function from periph common */
#define PERIPH_I2C_NEED_READ_REG
/** Use write reg function from periph common */
#define PERIPH_I2C_NEED_WRITE_REG
/** Use read regs function from periph common */
#define PERIPH_I2C_NEED_READ_REGS
#if defined(CPU_FAM_STM32F1) || defined(CPU_FAM_STM32F2) || \
defined(CPU_FAM_STM32L1) || defined(CPU_FAM_STM32F4) || \
defined(CPU_FAM_STM32MP1)
/** Use write regs function from periph common */
#define PERIPH_I2C_NEED_WRITE_REGS
#endif
/** @} */
#ifndef DOXYGEN
/**
* @brief Default mapping of I2C bus speed values
* @{
*/
#define HAVE_I2C_SPEED_T
typedef enum {
#if defined(CPU_FAM_STM32F1) || defined(CPU_FAM_STM32F2) || \
defined(CPU_FAM_STM32F4) || defined(CPU_FAM_STM32L1) || \
defined(CPU_FAM_STM32MP1)
I2C_SPEED_LOW, /**< low speed mode: ~10kit/s */
#endif
I2C_SPEED_NORMAL, /**< normal mode: ~100kbit/s */
I2C_SPEED_FAST, /**< fast mode: ~400kbit/s */
#if defined(CPU_FAM_STM32F0) || defined(CPU_FAM_STM32F3) || \
defined(CPU_FAM_STM32F7) || defined(CPU_FAM_STM32L0) || \
defined(CPU_FAM_STM32L4) || defined(CPU_FAM_STM32WB) || \
defined(CPU_FAM_STM32G4) || defined(CPU_FAM_STM32G0) || \
defined(CPU_FAM_STM32L5) || defined(CPU_FAM_STM32U5) || \
defined(CPU_FAM_STM32WL)
I2C_SPEED_FAST_PLUS, /**< fast plus mode: ~1Mbit/s */
#endif
} i2c_speed_t;
/** @} */
#endif /* ndef DOXYGEN */
/**
* @brief Structure for I2C configuration data
*/
typedef struct {
I2C_TypeDef *dev; /**< i2c device */
i2c_speed_t speed; /**< i2c bus speed */
gpio_t scl_pin; /**< scl pin number */
gpio_t sda_pin; /**< sda pin number */
#ifndef CPU_FAM_STM32F1
gpio_af_t scl_af; /**< scl pin alternate function value */
gpio_af_t sda_af; /**< sda pin alternate function value */
#endif
uint8_t bus; /**< APB bus */
uint32_t rcc_mask; /**< bit in clock enable register */
#if defined(CPU_FAM_STM32F0) || defined(CPU_FAM_STM32F3)
uint32_t rcc_sw_mask; /**< bit to switch I2C clock */
#endif
#if defined(CPU_FAM_STM32F1) || defined(CPU_FAM_STM32F2) || \
defined(CPU_FAM_STM32F4) || defined(CPU_FAM_STM32L1) || \
defined(CPU_FAM_STM32MP1)
uint32_t clk; /**< bus frequency as defined in board config */
#endif
uint8_t irqn; /**< I2C event interrupt number */
} i2c_conf_t;
#if defined(CPU_FAM_STM32F0) || defined(CPU_FAM_STM32F3) || \
defined(CPU_FAM_STM32F7) || defined(CPU_FAM_STM32L0) || \
defined(CPU_FAM_STM32L4) || defined(CPU_FAM_STM32WB) || \
defined(CPU_FAM_STM32G4) || defined(CPU_FAM_STM32G0) || \
defined(CPU_FAM_STM32L5) || defined(CPU_FAM_STM32U5) || \
defined(CPU_FAM_STM32WL)
/**
* @brief Structure for I2C timing register settings
*
* These parameters are valid for 48MHz (16MHz for L0) input clock.
* See reference manual of supported CPU for example of timing settings:
* - STM32F030/F070: see RM0360, section 22.4.10, p.560, table 76
* - STM32F303: see RM0316, section 28.4.9, p.849, table 148
* - STM32F72X: see RM0431, section 26.4.9, p.851, table 149
* - STM32L0x2: see RM0376, section 27.4.10, p.686, table 117
* - STM32L4X5/6: see RM0351, section 39.4.9, p.1297, table 234
*/
typedef struct {
uint8_t presc; /**< Timing prescaler value */
uint8_t scll; /**< SCL Low period */
uint8_t sclh; /**< SCL High period */
uint8_t sdadel; /**< Data hold time */
uint8_t scldel; /**< Data setup time */
} i2c_timing_param_t;
#endif
#ifdef __cplusplus
}
#endif
#endif /* PERIPH_CPU_I2C_H */
/** @} */

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/*
* Copyright (C) 2016 Freie Universität Berlin
* 2017 OTA keys S.A.
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_stm32
* @{
*
* @file
* @brief Power Management (PM) CPU specific definitions for the STM32 family
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @author Vincent Dupont <vincent@otakeys.com>
*/
#ifndef PERIPH_CPU_PM_H
#define PERIPH_CPU_PM_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* @name PM definitions
* @{
*/
/**
* @brief Number of usable low power modes
*/
#define PM_NUM_MODES (2U)
/**
* @name Power modes
* @{
*/
#define STM32_PM_STOP (1U) /**< Index of STOP mode */
#define STM32_PM_STANDBY (0U) /**< Index of STANDBY mode */
/** @} */
#ifndef PM_EWUP_CONFIG
/**
* @brief Wake-up pins configuration (CSR register)
*/
#define PM_EWUP_CONFIG (0U)
#endif
/** @} */
#ifdef __cplusplus
}
#endif
#endif /* PERIPH_CPU_PM_H */
/** @} */

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/*
* Copyright (C) 2016 Freie Universität Berlin
* 2017 OTA keys S.A.
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_stm32
* @{
*
* @file
* @brief PWM CPU specific definitions for the STM32 family
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @author Vincent Dupont <vincent@otakeys.com>
*/
#ifndef PERIPH_CPU_PWM_H
#define PERIPH_CPU_PWM_H
#include <stdint.h>
#include "cpu.h"
#include "periph/cpu_gpio.h"
#include "periph/cpu_timer.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief PWM channel
*/
typedef struct {
gpio_t pin; /**< GPIO pin mapped to this channel */
uint8_t cc_chan; /**< capture compare channel used */
} pwm_chan_t;
/**
* @brief PWM configuration
*/
typedef struct {
TIM_TypeDef *dev; /**< Timer used */
uint32_t rcc_mask; /**< bit in clock enable register */
pwm_chan_t chan[TIMER_CHANNEL_NUMOF]; /**< channel mapping
* set to {GPIO_UNDEF, 0}
* if not used */
gpio_af_t af; /**< alternate function used */
uint8_t bus; /**< APB bus */
} pwm_conf_t;
#ifdef __cplusplus
}
#endif
#endif /* PERIPH_CPU_PWM_H */
/** @} */

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/*
* Copyright (C) 2016 Freie Universität Berlin
* 2017 OTA keys S.A.
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_stm32
* @{
*
* @file
* @brief QDEC CPU specific definitions for the STM32 family
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @author Vincent Dupont <vincent@otakeys.com>
*/
#ifndef PERIPH_CPU_QDEC_H
#define PERIPH_CPU_QDEC_H
#include <stdint.h>
#include "cpu.h"
#include "periph/cpu_gpio.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief All STM QDEC timers have 2 capture channels
*/
#define QDEC_CHAN (2U)
/**
* @brief QDEC channel
*/
typedef struct {
gpio_t pin; /**< GPIO pin mapped to this channel */
uint8_t cc_chan; /**< capture compare channel used */
} qdec_chan_t;
/**
* @brief QDEC configuration
*/
typedef struct {
TIM_TypeDef *dev; /**< Timer used */
uint32_t max; /**< Maximum counter value */
uint32_t rcc_mask; /**< bit in clock enable register */
qdec_chan_t chan[QDEC_CHAN]; /**< channel mapping, set to {GPIO_UNDEF, 0}
* if not used */
#ifndef CPU_FAM_STM32F1
gpio_af_t af; /**< alternate function used */
#endif
uint8_t bus; /**< APB bus */
uint8_t irqn; /**< global IRQ channel */
} qdec_conf_t;
#ifdef __cplusplus
}
#endif
#endif /* PERIPH_CPU_QDEC_H */
/** @} */

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/*
* Copyright (C) 2016 Freie Universität Berlin
* 2017 OTA keys S.A.
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_stm32
* @{
*
* @file
* @brief SPI CPU specific definitions for the STM32 family
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @author Vincent Dupont <vincent@otakeys.com>
*/
#ifndef PERIPH_CPU_SPI_H
#define PERIPH_CPU_SPI_H
#include <stdint.h>
#include "cpu.h"
#include "macros/units.h"
#include "periph/cpu_dma.h"
#include "periph/cpu_gpio.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Define a magic number that tells us to use hardware chip select
*
* We use a random value here, that does clearly differentiate from any possible
* GPIO_PIN(x) value.
*/
#define SPI_HWCS_MASK (0xffffff00)
/**
* @brief Override the default SPI hardware chip select access macro
*
* Since the CPU does only support one single hardware chip select line, we can
* detect the usage of non-valid lines by comparing to SPI_HWCS_VALID.
*/
#define SPI_HWCS(x) (SPI_HWCS_MASK | x)
/**
* @brief Use the shared SPI functions
* @{
*/
/** Use transfer byte function from periph common */
#define PERIPH_SPI_NEEDS_TRANSFER_BYTE
/** Use transfer reg function from periph common */
#define PERIPH_SPI_NEEDS_TRANSFER_REG
/** Use transfer regs function from periph common */
#define PERIPH_SPI_NEEDS_TRANSFER_REGS
/** @} */
/**
* @brief Override SPI clock speed values
* @{
*/
#define HAVE_SPI_CLK_T
enum {
SPI_CLK_100KHZ = KHZ(100), /**< drive the SPI bus with 100KHz */
SPI_CLK_400KHZ = KHZ(400), /**< drive the SPI bus with 400KHz */
SPI_CLK_1MHZ = MHZ(1), /**< drive the SPI bus with 1MHz */
SPI_CLK_5MHZ = MHZ(5), /**< drive the SPI bus with 5MHz */
SPI_CLK_10MHZ = MHZ(10), /**< drive the SPI bus with 10MHz */
};
/**
* @brief SPI clock type
*/
typedef uint32_t spi_clk_t;
/** @} */
/**
* @brief Structure for SPI configuration data
*/
typedef struct {
SPI_TypeDef *dev; /**< SPI device base register address */
gpio_t mosi_pin; /**< MOSI pin */
gpio_t miso_pin; /**< MISO pin */
gpio_t sclk_pin; /**< SCLK pin */
gpio_t cs_pin; /**< HWCS pin, set to GPIO_UNDEF if not mapped */
#ifndef CPU_FAM_STM32F1
gpio_af_t mosi_af; /**< MOSI pin alternate function */
gpio_af_t miso_af; /**< MISO pin alternate function */
gpio_af_t sclk_af; /**< SCLK pin alternate function */
gpio_af_t cs_af; /**< HWCS pin alternate function */
#endif
uint32_t rccmask; /**< bit in the RCC peripheral enable register */
uint8_t apbbus; /**< APBx bus the device is connected to */
#ifdef MODULE_PERIPH_DMA
dma_t tx_dma; /**< Logical DMA stream used for TX */
uint8_t tx_dma_chan; /**< DMA channel used for TX */
dma_t rx_dma; /**< Logical DMA stream used for RX */
uint8_t rx_dma_chan; /**< DMA channel used for RX */
#endif
} spi_conf_t;
#ifdef __cplusplus
}
#endif
#endif /* PERIPH_CPU_SPI_H */
/** @} */

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/*
* Copyright (C) 2016 Freie Universität Berlin
* 2017 OTA keys S.A.
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_stm32
* @{
*
* @file
* @brief Timer CPU specific definitions for the STM32 family
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @author Vincent Dupont <vincent@otakeys.com>
*/
#ifndef PERIPH_CPU_TIMER_H
#define PERIPH_CPU_TIMER_H
#include <stdint.h>
#include "cpu.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief All STM timers have 4 capture-compare channels
*/
#define TIMER_CHANNEL_NUMOF (4U)
/**
* @brief Define a macro for accessing a timer channel
*/
#define TIM_CHAN(tim, chan) *(&dev(tim)->CCR1 + chan)
/**
* @brief Timer configuration
*/
typedef struct {
TIM_TypeDef *dev; /**< timer device */
uint32_t max; /**< maximum value to count to (16/32 bit) */
uint32_t rcc_mask; /**< corresponding bit in the RCC register */
uint8_t bus; /**< APBx bus the timer is clock from */
uint8_t irqn; /**< global IRQ channel */
} timer_conf_t;
#ifdef __cplusplus
}
#endif
#endif /* PERIPH_CPU_TIMER_H */
/** @} */

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/*
* Copyright (C) 2016 Freie Universität Berlin
* 2017 OTA keys S.A.
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_stm32
* @{
*
* @file
* @brief UART CPU specific definitions for the STM32 family
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @author Vincent Dupont <vincent@otakeys.com>
*/
#ifndef PERIPH_CPU_UART_H
#define PERIPH_CPU_UART_H
#include <stdint.h>
#include "cpu.h"
#include "periph/cpu_dma.h"
#include "periph/cpu_gpio.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief UART hardware module types
*/
typedef enum {
STM32_USART, /**< STM32 USART module type */
STM32_LPUART, /**< STM32 Low-power UART (LPUART) module type */
} uart_type_t;
/**
* @brief Size of the UART TX buffer for non-blocking mode.
*/
#ifndef UART_TXBUF_SIZE
#define UART_TXBUF_SIZE (64)
#endif
#ifndef DOXYGEN
/**
* @brief Invalid UART mode mask
*
* This mask is also used to force data_bits_t to be uint32_t type
* since it may be assigned a uint32_t variable in uart_mode
*/
#define UART_INVALID_MODE (0x8000000)
/**
* @brief Override parity values
* @{
*/
#define HAVE_UART_PARITY_T
typedef enum {
UART_PARITY_NONE = 0, /**< no parity */
UART_PARITY_EVEN = USART_CR1_PCE, /**< even parity */
UART_PARITY_ODD = (USART_CR1_PCE | USART_CR1_PS), /**< odd parity */
UART_PARITY_MARK = UART_INVALID_MODE | 4, /**< not supported */
UART_PARITY_SPACE = UART_INVALID_MODE | 5 /**< not supported */
} uart_parity_t;
/** @} */
/**
* @brief Override data bits length values
* @{
*/
#define HAVE_UART_DATA_BITS_T
typedef enum {
UART_DATA_BITS_5 = UART_INVALID_MODE | 1, /**< not supported */
UART_DATA_BITS_6 = UART_INVALID_MODE | 2, /**< not supported unless parity is set */
#if defined(USART_CR1_M1)
UART_DATA_BITS_7 = USART_CR1_M1, /**< 7 data bits */
#else
UART_DATA_BITS_7 = UART_INVALID_MODE | 3, /**< not supported unless parity is set */
#endif
UART_DATA_BITS_8 = 0, /**< 8 data bits */
} uart_data_bits_t;
/** @} */
/**
* @brief Override stop bits length values
* @{
*/
#define HAVE_UART_STOP_BITS_T
typedef enum {
UART_STOP_BITS_1 = 0, /**< 1 stop bit */
UART_STOP_BITS_2 = USART_CR2_STOP_1, /**< 2 stop bits */
} uart_stop_bits_t;
/** @} */
#endif /* ndef DOXYGEN */
/**
* @brief Structure for UART configuration data
*/
typedef struct {
USART_TypeDef *dev; /**< UART device base register address */
uint32_t rcc_mask; /**< bit in clock enable register */
gpio_t rx_pin; /**< RX pin */
gpio_t tx_pin; /**< TX pin */
#ifndef CPU_FAM_STM32F1
gpio_af_t rx_af; /**< alternate function for RX pin */
gpio_af_t tx_af; /**< alternate function for TX pin */
#endif
uint8_t bus; /**< APB bus */
uint8_t irqn; /**< IRQ channel */
#ifdef MODULE_PERIPH_UART_HW_FC
gpio_t cts_pin; /**< CTS pin - set to GPIO_UNDEF when not using HW flow control */
gpio_t rts_pin; /**< RTS pin */
#ifndef CPU_FAM_STM32F1
gpio_af_t cts_af; /**< alternate function for CTS pin */
gpio_af_t rts_af; /**< alternate function for RTS pin */
#endif
#endif
#if defined(CPU_FAM_STM32L0) || defined(CPU_FAM_STM32L4) || \
defined(CPU_FAM_STM32WB) || defined(CPU_FAM_STM32G4) || \
defined(CPU_FAM_STM32L5) || defined(CPU_FAM_STM32U5) || \
defined(CPU_FAM_STM32MP1) || defined(CPU_FAM_STM32WL)
uart_type_t type; /**< hardware module type (USART or LPUART) */
uint32_t clk_src; /**< clock source used for UART */
#endif
#ifdef MODULE_PERIPH_DMA
dma_t dma; /**< Logical DMA stream used for TX */
uint8_t dma_chan; /**< DMA channel used for TX */
#endif
} uart_conf_t;
#ifdef __cplusplus
}
#endif
#endif /* PERIPH_CPU_UART_H */
/** @} */

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/*
* Copyright (C) 2016 Freie Universität Berlin
* 2017 OTA keys S.A.
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_stm32
* @{
*
* @file
* @brief USB CPU specific definitions for the STM32 family
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @author Vincent Dupont <vincent@otakeys.com>
*/
#ifndef PERIPH_CPU_USBDEV_H
#define PERIPH_CPU_USBDEV_H
#include <stdint.h>
#include "periph/cpu_gpio.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief USBDEV buffers must be word aligned because of DMA restrictions
*/
#define USBDEV_CPU_DMA_ALIGNMENT (4)
/**
* @brief USBDEV buffer instantiation requirement
*/
#define USBDEV_CPU_DMA_REQUIREMENTS __attribute__((aligned(USBDEV_CPU_DMA_ALIGNMENT)))
/**
* @brief USB OTG peripheral type.
*
* High speed peripheral is assumed to have DMA support available.
*
* @warning Only one of each type is supported at the moment, it is not
* supported to have two FS type or two HS type peripherals enabled on a
* single MCU.
*/
typedef enum {
STM32_USB_OTG_FS = 0, /**< Full speed peripheral */
STM32_USB_OTG_HS = 1, /**< High speed peripheral */
} stm32_usb_otg_fshs_type_t;
/**
* @brief Type of USB OTG peripheral phy.
*
* The FS type only supports the built-in type, the HS phy can have either the
* FS built-in phy enabled or the HS ULPI interface enabled.
*/
typedef enum {
STM32_USB_OTG_PHY_BUILTIN,
STM32_USB_OTG_PHY_ULPI,
} stm32_usb_otg_fshs_phy_t;
/**
* @brief stm32 USB OTG configuration
*/
typedef struct {
uintptr_t periph; /**< USB peripheral base address */
uint32_t rcc_mask; /**< bit in clock enable register */
stm32_usb_otg_fshs_phy_t phy; /**< Built-in or ULPI phy */
stm32_usb_otg_fshs_type_t type; /**< FS or HS type */
uint8_t irqn; /**< IRQ channel */
uint8_t ahb; /**< AHB bus */
gpio_t dm; /**< Data- gpio */
gpio_t dp; /**< Data+ gpio */
gpio_af_t af; /**< Alternative function */
} stm32_usb_otg_fshs_config_t;
/**
* @brief stm32 USB device FS configuration
*/
typedef struct {
uintptr_t base_addr; /**< USB peripheral base address */
uint32_t rcc_mask; /**< bit in clock enable register */
uint8_t irqn; /**< IRQ channel */
uint8_t apb; /**< APB bus */
gpio_t dm; /**< Data- gpio */
gpio_t dp; /**< Data+ gpio */
gpio_af_t af; /**< Alternative function */
} stm32_usbdev_fs_config_t;
#ifdef __cplusplus
}
#endif
#endif /* PERIPH_CPU_USBDEV_H */
/** @} */

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/*
* Copyright (C) 2016 Freie Universität Berlin
* 2017 OTA keys S.A.
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_stm32
* @{
*
* @file
* @brief Watchdog CPU definitions for the STM32 family
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @author Vincent Dupont <vincent@otakeys.com>
*/
#ifndef PERIPH_CPU_WDT_H
#define PERIPH_CPU_WDT_H
#include "timex.h"
#include "periph/cpu_common.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @name WDT upper and lower bound times in ms
* @{
*/
/** @brief Lower bound time
*
* Actual Lower Limit is ~100us so round up
*/
#define NWDT_TIME_LOWER_LIMIT (1U)
/** Upper bound time */
#define NWDT_TIME_UPPER_LIMIT (4U * US_PER_MS * 4096U * (1 << 6U) \
/ CLOCK_LSI)
#define WDT_HAS_STOP (0U) /**< Watchdog can't be stopped once enabled */
/** Whether Watchdog has an init function (only on STM32L4) */
#if defined(CPU_FAM_STM32L4)
#define WDT_HAS_INIT (1U)
#else
#define WDT_HAS_INIT (0U)
#endif
/** @} */
#ifdef __cplusplus
}
#endif
#endif /* PERIPH_CPU_WDT_H */
/** @} */

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cpu/stm32/include/periph_cpu.h
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