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