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- /**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- *
- * Based on Sprinter and grbl.
- * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
- *
- * 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/>.
- *
- */
- #pragma once
-
- #include "../../core/serial.h"
- #include <stdint.h>
-
- // Serial stuff here
- // Inside an exception handler, the CPU state is not safe, we can't expect the handler to resume
- // and the software to continue. UART communication can't rely on later callback/interrupt as it might never happen.
- // So, you need to provide some method to send one byte to the usual UART with the interrupts disabled
- // By default, the method uses SERIAL_CHAR but it's 100% guaranteed to break (couldn't be worse than nothing...)7
- extern void (*HAL_min_serial_init)();
- extern void (*HAL_min_serial_out)(char ch);
-
- struct MinSerial {
- static bool force_using_default_output;
- // Serial output
- static void TX(char ch) {
- if (force_using_default_output)
- SERIAL_CHAR(ch);
- else
- HAL_min_serial_out(ch);
- }
- // Send String through UART
- static void TX(const char *s) { while (*s) TX(*s++); }
- // Send a digit through UART
- static void TXDigit(uint32_t d) {
- if (d < 10) TX((char)(d+'0'));
- else if (d < 16) TX((char)(d+'A'-10));
- else TX('?');
- }
-
- // Send Hex number through UART
- static void TXHex(uint32_t v) {
- TX("0x");
- for (uint8_t i = 0; i < 8; i++, v <<= 4)
- TXDigit((v >> 28) & 0xF);
- }
-
- // Send Decimal number through UART
- static void TXDec(uint32_t v) {
- if (!v) {
- TX('0');
- return;
- }
-
- char nbrs[14];
- char *p = &nbrs[0];
- while (v != 0) {
- *p++ = '0' + (v % 10);
- v /= 10;
- }
- do {
- p--;
- TX(*p);
- } while (p != &nbrs[0]);
- }
- static void init() { if (!force_using_default_output) HAL_min_serial_init(); }
- };
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