+/*
+ * 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>
g.edge_cnt++;
}
+static noinline void do_to_step(void)
+{
+ g.frame_cnt++;
+
+ g.t_o = (g.t_o + 1) & STREAM_BUF_MASK;
+ if (g.t_o == g.t_i)
+ // done
+ attachInterruptVector(IRQ_PORTB, portb_isr_fixed);
+}
+
static void portb_isr_do_to_inc(void)
{
uint32_t isfr, th;
th = (GPIOB_PDIR >> CORE_PIN0_BIT) & 1;
GPIOD_PDOR = g.stream_to[g.t_o][th];
- if (th) {
- g.t_o = (g.t_o + 1) & STREAM_BUF_MASK;
- if (g.t_o == g.t_i)
- // done
- attachInterruptVector(IRQ_PORTB, portb_isr_fixed);
- g.frame_cnt++;
- }
- g.edge_cnt++;
+ if (th)
+ do_to_step();
}
static void portb_isr_do_to(void)
g.frame_cnt++;
}
+static void choose_isrs(void)
+{
+ if (g.stream_enable_to) {
+ if (g.use_readinc) {
+ attachInterruptVector(IRQ_PORTB, portb_isr_do_to_inc);
+ attachInterruptVector(IRQ_PORTC, portc_isr_nop);
+ }
+ else {
+ attachInterruptVector(IRQ_PORTB, portb_isr_do_to);
+ attachInterruptVector(IRQ_PORTC, portc_isr_frameinc);
+ }
+ }
+ else if (g.stream_enable_from) {
+ g.use_pending = 1;
+ if (g.use_readinc) {
+ attachInterruptVector(IRQ_PORTB,
+ portb_isr_fixed_do_from);
+ attachInterruptVector(IRQ_PORTC, portc_isr_nop);
+ }
+ else {
+ attachInterruptVector(IRQ_PORTB, portb_isr_fixed);
+ attachInterruptVector(IRQ_PORTC,
+ portc_isr_frameinc_do_from);
+ }
+ }
+}
+
static void udelay(uint32_t us)
{
uint32_t start = micros();
}
__disable_irq();
+ choose_isrs();
g.stream_started = 1;
- if (g.stream_enable_to) {
- if (g.use_readinc) {
- attachInterruptVector(IRQ_PORTB, portb_isr_do_to_inc);
- attachInterruptVector(IRQ_PORTC, portc_isr_nop);
- }
- else {
- attachInterruptVector(IRQ_PORTB, portb_isr_do_to);
- attachInterruptVector(IRQ_PORTC, portc_isr_frameinc);
- }
- }
- else if (g.stream_enable_from) {
- g.use_pending = 1;
- if (g.use_readinc) {
- attachInterruptVector(IRQ_PORTB,
- portb_isr_fixed_do_from);
- attachInterruptVector(IRQ_PORTC, portc_isr_nop);
- }
- else {
- attachInterruptVector(IRQ_PORTB, portb_isr_fixed);
- attachInterruptVector(IRQ_PORTC,
- portc_isr_frameinc_do_from);
- }
- }
__enable_irq();
}
g.stream_enable_to = pkt->enable.stream_to;
g.stream_enable_from = pkt->enable.stream_from;
g.use_readinc = pkt->enable.use_readinc;
+ if (pkt->enable.no_start_seq) {
+ GPIOD_PDOR = 0x3f;
+ choose_isrs();
+ g.stream_started = 1;
+ }
__enable_irq();
break;
case PKT_STREAM_ABORT:
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..
NVIC_SET_PRIORITY(IRQ_PORTB, 0);
NVIC_SET_PRIORITY(IRQ_PORTC, 16);
+ SCB_SHPR1 = SCB_SHPR2 = SCB_SHPR3 = 0x10101010;
pinMode( 2, OUTPUT);
pinMode(14, OUTPUT);
printf("GPIOD PDDR, PDIR: %08x %08x\n", GPIOD_PDIR, GPIOD_PDDR);
printf("PORTB_PCR16: %08x\n", PORTB_PCR16);
printf("PORTC_PCR6: %08x\n", PORTC_PCR6);
+ printf("PORTD_PCR0: %08x\n", PORTD_PCR0);
asm("mrs %0, BASEPRI" : "=r"(ret));
- printf("BASEPRI: %d\n", ret);
+ printf("BASEPRI: %d, SHPR: %08x %08x %08x\n",
+ ret, SCB_SHPR1, SCB_SHPR2, SCB_SHPR3);
- 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);
+ }
}
}
notaz.gp2x.de / teensytas.git / blobdiff