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