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/**
* Marlin 3D Printer Firmware
* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
#if defined(ARDUINO_ARCH_STM32) && !defined(STM32GENERIC)
#include "../../inc/MarlinConfig.h"
#include "MarlinSerial.h"
#if ENABLED(EMERGENCY_PARSER)
#include "../../feature/e_parser.h"
#endif
#ifndef USART4
#define USART4 UART4
#endif
#ifndef USART5
#define USART5 UART5
#endif
#define DECLARE_SERIAL_PORT(ser_num) \
void _rx_complete_irq_ ## ser_num (serial_t * obj); \
MSerialT MSerial ## ser_num (true, USART ## ser_num, &_rx_complete_irq_ ## ser_num); \
void _rx_complete_irq_ ## ser_num (serial_t * obj) { MSerial ## ser_num ._rx_complete_irq(obj); }
#define DECLARE_SERIAL_PORT_EXP(ser_num) DECLARE_SERIAL_PORT(ser_num)
#if defined(SERIAL_PORT) && SERIAL_PORT >= 0
DECLARE_SERIAL_PORT_EXP(SERIAL_PORT)
#endif
#if defined(SERIAL_PORT_2) && SERIAL_PORT_2 >= 0
DECLARE_SERIAL_PORT_EXP(SERIAL_PORT_2)
#endif
#if defined(MMU2_SERIAL_PORT) && MMU2_SERIAL_PORT >= 0
DECLARE_SERIAL_PORT_EXP(MMU2_SERIAL_PORT)
#endif
#if defined(LCD_SERIAL_PORT) && LCD_SERIAL_PORT >= 0
DECLARE_SERIAL_PORT_EXP(LCD_SERIAL_PORT)
#endif
void MarlinSerial::begin(unsigned long baud, uint8_t config) {
HardwareSerial::begin(baud, config);
// Replace the IRQ callback with the one we have defined
TERN_(EMERGENCY_PARSER, _serial.rx_callback = _rx_callback);
}
// This function is Copyright (c) 2006 Nicholas Zambetti.
void MarlinSerial::_rx_complete_irq(serial_t *obj) {
// No Parity error, read byte and store it in the buffer if there is room
unsigned char c;
if (uart_getc(obj, &c) == 0) {
rx_buffer_index_t i = (unsigned int)(obj->rx_head + 1) % SERIAL_RX_BUFFER_SIZE;
// if we should be storing the received character into the location
// just before the tail (meaning that the head would advance to the
// current location of the tail), we're about to overflow the buffer
// and so we don't write the character or advance the head.
if (i != obj->rx_tail) {
obj->rx_buff[obj->rx_head] = c;
obj->rx_head = i;
}
#if ENABLED(EMERGENCY_PARSER)
emergency_parser.update(static_cast<MSerialT*>(this)->emergency_state, c);
#endif
}
}
#endif // ARDUINO_ARCH_STM32 && !STM32GENERIC
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