115 lines
4.5 KiB
C
115 lines
4.5 KiB
C
/*
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2013, 2014 Damien P. George
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
#ifndef MICROPY_INCLUDED_STM32_UART_H
|
|
#define MICROPY_INCLUDED_STM32_UART_H
|
|
|
|
#include "shared/runtime/mpirq.h"
|
|
|
|
typedef enum {
|
|
PYB_UART_NONE = 0,
|
|
PYB_UART_1 = 1,
|
|
PYB_UART_2 = 2,
|
|
PYB_UART_3 = 3,
|
|
PYB_UART_4 = 4,
|
|
PYB_UART_5 = 5,
|
|
PYB_UART_6 = 6,
|
|
PYB_UART_7 = 7,
|
|
PYB_UART_8 = 8,
|
|
PYB_UART_9 = 9,
|
|
PYB_UART_10 = 10,
|
|
#ifdef LPUART1
|
|
PYB_LPUART_1 = MICROPY_HW_MAX_UART + 1,
|
|
#endif
|
|
#ifdef LPUART2
|
|
PYB_LPUART_2 = MICROPY_HW_MAX_UART + 2,
|
|
#endif
|
|
} pyb_uart_t;
|
|
|
|
#define CHAR_WIDTH_8BIT (0)
|
|
#define CHAR_WIDTH_9BIT (1)
|
|
|
|
// OR-ed IRQ flags which are allowed to be used by the user
|
|
#define MP_UART_ALLOWED_FLAGS UART_FLAG_IDLE
|
|
|
|
// OR-ed IRQ flags which should not be touched by the user
|
|
#define MP_UART_RESERVED_FLAGS UART_FLAG_RXNE
|
|
|
|
typedef struct _machine_uart_obj_t {
|
|
mp_obj_base_t base;
|
|
USART_TypeDef *uartx;
|
|
pyb_uart_t uart_id : 8;
|
|
bool is_static : 1;
|
|
bool is_enabled : 1;
|
|
bool attached_to_repl; // whether the UART is attached to REPL
|
|
byte char_width; // 0 for 7,8 bit chars, 1 for 9 bit chars
|
|
uint16_t char_mask; // 0x7f for 7 bit, 0xff for 8 bit, 0x1ff for 9 bit
|
|
uint16_t timeout; // timeout waiting for first char
|
|
uint16_t timeout_char; // timeout waiting between chars
|
|
uint16_t read_buf_len; // len in chars; buf can hold len-1 chars
|
|
volatile uint16_t read_buf_head; // indexes first empty slot
|
|
uint16_t read_buf_tail; // indexes first full slot (not full if equals head)
|
|
byte *read_buf; // byte or uint16_t, depending on char size
|
|
uint16_t mp_irq_trigger; // user IRQ trigger mask
|
|
uint16_t mp_irq_flags; // user IRQ active IRQ flags
|
|
mp_irq_obj_t *mp_irq_obj; // user IRQ object
|
|
} machine_uart_obj_t;
|
|
|
|
extern const mp_irq_methods_t uart_irq_methods;
|
|
|
|
void uart_init0(void);
|
|
void uart_deinit_all(void);
|
|
bool uart_exists(int uart_id);
|
|
bool uart_init(machine_uart_obj_t *uart_obj,
|
|
uint32_t baudrate, uint32_t bits, uint32_t parity, uint32_t stop, uint32_t flow);
|
|
void uart_irq_config(machine_uart_obj_t *self, bool enable);
|
|
void uart_set_rxbuf(machine_uart_obj_t *self, size_t len, void *buf);
|
|
void uart_deinit(machine_uart_obj_t *uart_obj);
|
|
void uart_irq_handler(mp_uint_t uart_id);
|
|
|
|
void uart_attach_to_repl(machine_uart_obj_t *self, bool attached);
|
|
uint32_t uart_get_source_freq(machine_uart_obj_t *self);
|
|
uint32_t uart_get_baudrate(machine_uart_obj_t *self);
|
|
void uart_set_baudrate(machine_uart_obj_t *self, uint32_t baudrate);
|
|
|
|
mp_uint_t uart_rx_any(machine_uart_obj_t *uart_obj);
|
|
bool uart_rx_wait(machine_uart_obj_t *self, uint32_t timeout);
|
|
int uart_rx_char(machine_uart_obj_t *uart_obj);
|
|
bool uart_tx_wait(machine_uart_obj_t *self, uint32_t timeout);
|
|
size_t uart_tx_data(machine_uart_obj_t *self, const void *src_in, size_t num_chars, int *errcode);
|
|
void uart_tx_strn(machine_uart_obj_t *uart_obj, const char *str, uint len);
|
|
|
|
static inline bool uart_tx_avail(machine_uart_obj_t *self) {
|
|
#if defined(STM32F4) || defined(STM32L1)
|
|
return self->uartx->SR & USART_SR_TXE;
|
|
#elif defined(STM32G0) || defined(STM32H7) || defined(STM32WL)
|
|
return self->uartx->ISR & USART_ISR_TXE_TXFNF;
|
|
#else
|
|
return self->uartx->ISR & USART_ISR_TXE;
|
|
#endif
|
|
}
|
|
|
|
#endif // MICROPY_INCLUDED_STM32_UART_H
|