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/**
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* Marlin 3D Printer Firmware
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* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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#if defined(ARDUINO_ARCH_STM32) && !defined(STM32GENERIC)
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#include "../../inc/MarlinConfig.h"
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#include "MarlinSerial.h"
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#if ENABLED(EMERGENCY_PARSER)
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#include "../../feature/e_parser.h"
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#endif
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#ifndef USART4
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#define USART4 UART4
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#endif
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#ifndef USART5
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#define USART5 UART5
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#endif
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#define DECLARE_SERIAL_PORT(ser_num) \
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void _rx_complete_irq_ ## ser_num (serial_t * obj); \
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MarlinSerial MSerial ## ser_num (USART ## ser_num, &_rx_complete_irq_ ## ser_num); \
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void _rx_complete_irq_ ## ser_num (serial_t * obj) { MSerial ## ser_num ._rx_complete_irq(obj); }
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#define DECLARE_SERIAL_PORT_EXP(ser_num) DECLARE_SERIAL_PORT(ser_num)
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#if defined(SERIAL_PORT) && SERIAL_PORT >= 0
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DECLARE_SERIAL_PORT_EXP(SERIAL_PORT)
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#endif
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#if defined(SERIAL_PORT_2) && SERIAL_PORT_2 >= 0
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DECLARE_SERIAL_PORT_EXP(SERIAL_PORT_2)
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#endif
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#if defined(LCD_SERIAL_PORT) && LCD_SERIAL_PORT >= 0
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DECLARE_SERIAL_PORT_EXP(LCD_SERIAL_PORT)
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#endif
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void MarlinSerial::begin(unsigned long baud, uint8_t config) {
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HardwareSerial::begin(baud, config);
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// Replace the IRQ callback with the one we have defined
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TERN_(EMERGENCY_PARSER, _serial.rx_callback = _rx_callback);
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}
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// This function is Copyright (c) 2006 Nicholas Zambetti.
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void MarlinSerial::_rx_complete_irq(serial_t *obj) {
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// No Parity error, read byte and store it in the buffer if there is room
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unsigned char c;
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if (uart_getc(obj, &c) == 0) {
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rx_buffer_index_t i = (unsigned int)(obj->rx_head + 1) % SERIAL_RX_BUFFER_SIZE;
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// if we should be storing the received character into the location
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// just before the tail (meaning that the head would advance to the
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// current location of the tail), we're about to overflow the buffer
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// and so we don't write the character or advance the head.
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if (i != obj->rx_tail) {
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obj->rx_buff[obj->rx_head] = c;
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obj->rx_head = i;
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}
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#if ENABLED(EMERGENCY_PARSER)
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emergency_parser.update(emergency_state, c);
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#endif
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}
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}
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#endif // ARDUINO_ARCH_STM32 && !STM32GENERIC
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