69 lines
2.3 KiB
C
69 lines
2.3 KiB
C
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/*
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Copyright 2018 Massdrop Inc.
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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 2 of the License, or
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(at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef CONSOLE_ENABLE
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# include "samd51j18a.h"
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# include "arm_atsam_protocol.h"
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# include "printf.h"
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# include <string.h>
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# include <stdarg.h>
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void console_printf(char *fmt, ...) {
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while (udi_hid_con_b_report_trans_ongoing) {
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} // Wait for any previous transfers to complete
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static char console_printbuf[CONSOLE_PRINTBUF_SIZE]; // Print and send buffer
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va_list va;
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int result;
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va_start(va, fmt);
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result = vsnprintf(console_printbuf, CONSOLE_PRINTBUF_SIZE, fmt, va);
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va_end(va);
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uint32_t irqflags;
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char * pconbuf = console_printbuf; // Pointer to start send from
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int send_out = CONSOLE_EPSIZE; // Bytes to send per transfer
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while (result > 0) { // While not error and bytes remain
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while (udi_hid_con_b_report_trans_ongoing) {
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} // Wait for any previous transfers to complete
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irqflags = __get_PRIMASK();
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__disable_irq();
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__DMB();
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if (result < CONSOLE_EPSIZE) { // If remaining bytes are less than console epsize
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memset(udi_hid_con_report, 0, CONSOLE_EPSIZE); // Clear the buffer
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send_out = result; // Send remaining size
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}
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memcpy(udi_hid_con_report, pconbuf, send_out); // Copy data into the send buffer
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udi_hid_con_b_report_valid = 1; // Set report valid
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udi_hid_con_send_report(); // Send report
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__DMB();
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__set_PRIMASK(irqflags);
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result -= send_out; // Decrement result by bytes sent
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pconbuf += send_out; // Increment buffer point by bytes sent
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}
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}
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#endif // CONSOLE_ENABLE
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