reflow-oven-control-sw/stm-firmware/include/stm-periph/uart.h

/* Reflow Oven Controller
 *
 * Copyright (C) 2020  Mario Hüttel <mario.huettel@gmx.net>
 *
 * This file is part of the Reflow Oven Controller Project.
 *
 * The reflow oven controller is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * GDSII-Converter is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with the reflow oven controller project.
 * If not, see <http://www.gnu.org/licenses/>.
 */

#include <stdint.h>
#include <stddef.h>

#ifndef UART_UART_H_
#define UART_UART_H_

#define UART_RECEIVE_DMA_STREAM DMA2_Stream5

#define UART_SEND_DMA_STREAM DMA2_Stream7

#define UART_PERIPH USART1
#define UART_RCC_MASK RCC_APB2ENR_USART1EN

#ifdef DEBUGBUILD

#define UART_PORT GPIOA
#define UART_PORT_RCC_MASK RCC_AHB1ENR_GPIOAEN
#define UART_RX_PIN 10
#define UART_TX_PIN 9
#define UART_RX_PIN_ALTFUNC 7
#define UART_TX_PIN_ALTFUNC 7
#else

#endif

/* UART_DIV is 45.5625 => 115200 @ 84 MHz */
#define UART_DIV_FRACTION 9U /* Equals 9/16 = 0.5625 */
#define UART_DIV_MANTISSA 45U /* Equals 45 */

#define UART_BRR_REG_VALUE ((UART_DIV_MANTISSA<<4) | UART_DIV_FRACTION);

void initUART();
void sendChar(char c);
void sendString(char* s, int count);


void uart_init_with_dma();

void uart_disable();

void uart_send_char(char c);

void uart_send_array(const char *data, uint32_t len);

void uart_send_string(const char *string);

void uart_send_array_with_dma(const char *data, uint32_t len);

void uart_send_string_with_dma(const char *string);

int uart_receive_data_with_dma(const char **data, size_t *len);


#endif /* UART_UART_H_ */