+/*
+ * TeensyTAS, TAS input player for MegaDrive
+ * Copyright (c) 2014 notaz
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
#include <stdint.h>
#include <stdio.h>
#include <string.h>
int main(void)
{
+ uint32_t led_time = 0;
+ uint32_t scheck_time = 0;
uint32_t edge_cnt_last;
uint32_t edge_cnt;
uint8_t buf[64];
- int timeout;
int ret;
delay(1000); // wait for usb..
asm("mrs %0, BASEPRI" : "=r"(ret));
printf("BASEPRI: %d\n", ret);
- timeout = 1000;
edge_cnt_last = g.edge_cnt;
while (1) {
struct tas_pkt pkt;
+ uint32_t now;
while (g.stream_enable_to && !g.stream_ended
&& get_space_to() > sizeof(pkt.data) / STREAM_EL_SZ)
{
+ if (g.t_i == g.t_o && g.frame_cnt != 0) {
+ printf("underflow detected\n");
+ g.stream_enable_to = 0;
+ break;
+ }
+
pkt.type = PKT_STREAM_REQ;
pkt.req.frame = g.frame_cnt;
}
}
- if (timeout == 1000) {
+ now = millis();
+
+ // start condition check
+ if (now - scheck_time > 1000) {
edge_cnt = g.edge_cnt;
//printf("e: %d th: %d\n", edge_cnt - edge_cnt_last,
// (GPIOB_PDIR >> CORE_PIN0_BIT) & 1);
- if (edge_cnt - edge_cnt_last > 10000) {
+ if ((g.stream_enable_to || g.stream_enable_from)
+ && !g.stream_started
+ && edge_cnt - edge_cnt_last > 10000)
+ {
do_start_seq();
edge_cnt = g.edge_cnt;
}
edge_cnt_last = edge_cnt;
+ scheck_time = now;
}
- ret = usb_rawhid_recv(buf, timeout);
- if (ret == 64) {
- CORE_PIN13_PORTSET = CORE_PIN13_BITMASK;
-
- do_usb(buf);
- timeout = 20;
- }
- else if (ret == 0) {
- CORE_PIN13_PORTCLEAR = CORE_PIN13_BITMASK;
- timeout = 1000;
+ // led?
+ if (CORE_PIN13_PORTREG & CORE_PIN13_BITMASK) {
+ if ((int)(now - led_time) > 10)
+ CORE_PIN13_PORTCLEAR = CORE_PIN13_BITMASK;
}
- else {
- printf("usb_rawhid_recv: %d\n", ret);
- timeout = 1000;
+
+ // something on rawhid?
+ if (usb_rawhid_available() > 0)
+ {
+ ret = usb_rawhid_recv(buf, 20);
+ if (ret == 64) {
+ led_time = millis();
+ CORE_PIN13_PORTSET = CORE_PIN13_BITMASK;
+
+ do_usb(buf);
+ }
+ else {
+ printf("usb_rawhid_recv: %d\n", ret);
+ }
}
}