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.
 */
 
#pragma once

 
#include <stdint.h>
 
#include "cpu.h"
#include "periph/cpu_dma.h"
#include "periph/cpu_gpio.h"
 
#ifdef __cplusplus
extern "C" {
#endif

typedef enum {
    STM32_USART,            
    STM32_LPUART,           
} uart_type_t;

#ifndef UART_TXBUF_SIZE
#define UART_TXBUF_SIZE    (64)
#endif
 
#ifndef DOXYGEN
#define UART_INVALID_MODE   (0x8000000)

#define HAVE_UART_PARITY_T
typedef enum {
   UART_PARITY_NONE = 0,                               
   UART_PARITY_EVEN = USART_CR1_PCE,                   
   UART_PARITY_ODD = (USART_CR1_PCE | USART_CR1_PS),   
   UART_PARITY_MARK = UART_INVALID_MODE | 4,           
   UART_PARITY_SPACE = UART_INVALID_MODE  | 5          
} uart_parity_t;

#define HAVE_UART_DATA_BITS_T
typedef enum {
    UART_DATA_BITS_5 = UART_INVALID_MODE | 1,   
    UART_DATA_BITS_6 = UART_INVALID_MODE | 2,   
#if defined(USART_CR1_M1)
    UART_DATA_BITS_7 = USART_CR1_M1,            
#else
    UART_DATA_BITS_7 = UART_INVALID_MODE | 3,   
#endif
    UART_DATA_BITS_8 = 0,                       
} uart_data_bits_t;

#define HAVE_UART_STOP_BITS_T
typedef enum {
   UART_STOP_BITS_1 = 0,                  
   UART_STOP_BITS_2 = USART_CR2_STOP_1,   
} uart_stop_bits_t;
#endif /* ndef DOXYGEN */

typedef struct {
    USART_TypeDef *dev;     
    uint32_t rcc_mask;      
    gpio_t rx_pin;          
    gpio_t tx_pin;          
#ifndef CPU_FAM_STM32F1
    gpio_af_t rx_af;        
    gpio_af_t tx_af;        
#endif
    uint8_t bus;            
    uint8_t irqn;           
#ifdef MODULE_PERIPH_UART_HW_FC
    gpio_t cts_pin;         
    gpio_t rts_pin;         
#ifndef CPU_FAM_STM32F1
    gpio_af_t cts_af;       
    gpio_af_t rts_af;       
#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;       
    uint32_t clk_src;       
#endif
#ifdef MODULE_PERIPH_DMA
    dma_t dma;              
    uint8_t dma_chan;       
#endif
} uart_conf_t;
 
#ifdef __cplusplus
}
#endif