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#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <ucontext.h>
#include <chopstx.h>
#include "usb_lld.h"
#include "tty.h"
#include <unistd.h>
#include <stdio.h>
static void
set_led (int on)
{
#if 0
/* For debugging, no output of LED. */
#if 1
if (on)
write (1, "********\x08\x08\x08\x08\x08\x08\x08\x08", 16);
else
write (1, " \x08\x08\x08\x08\x08\x08\x08\x08", 16);
#else
if (on)
puts ("!");
else
puts ("");
#endif
#else
(void)on;
#endif
}
static chopstx_mutex_t mtx;
static chopstx_cond_t cnd0;
static chopstx_cond_t cnd1;
static uint8_t u, v;
static uint8_t m; /* 0..100 */
static void *
pwm (void *arg)
{
(void)arg;
chopstx_mutex_lock (&mtx);
chopstx_cond_wait (&cnd0, &mtx);
chopstx_mutex_unlock (&mtx);
while (1)
{
set_led (u&v);
chopstx_usec_wait (m);
set_led (0);
chopstx_usec_wait (100-m);
}
return NULL;
}
static void *
blk (void *arg)
{
(void)arg;
chopstx_mutex_lock (&mtx);
chopstx_cond_wait (&cnd1, &mtx);
chopstx_mutex_unlock (&mtx);
while (1)
{
v = 0;
chopstx_usec_wait (200*1000);
v = 1;
chopstx_usec_wait (200*1000);
}
return NULL;
}
#define PRIO_PWM 3
#define PRIO_BLK 2
static char __process1_stack_base__[4096];
static char __process2_stack_base__[4096];
#define STACK_ADDR_PWM ((uintptr_t)__process1_stack_base__)
#define STACK_SIZE_PWM (sizeof __process1_stack_base__)
#define STACK_ADDR_BLK ((uintptr_t)__process2_stack_base__)
#define STACK_SIZE_BLK (sizeof __process2_stack_base__)
static char hexchar (uint8_t x)
{
x &= 0x0f;
if (x <= 0x09)
return '0' + x;
else if (x <= 0x0f)
return 'a' + x - 10;
else
return '?';
}
#ifdef GNU_LINUX_EMULATION
#define main emulated_main
#endif
int
main (int argc, const char *argv[])
{
struct tty *tty;
uint8_t count;
(void)argc;
(void)argv;
chopstx_mutex_init (&mtx);
chopstx_cond_init (&cnd0);
chopstx_cond_init (&cnd1);
m = 10;
chopstx_create (PRIO_PWM, STACK_ADDR_PWM, STACK_SIZE_PWM, pwm, NULL);
chopstx_create (PRIO_BLK, STACK_ADDR_BLK, STACK_SIZE_BLK, blk, NULL);
chopstx_usec_wait (200*1000);
chopstx_mutex_lock (&mtx);
chopstx_cond_signal (&cnd0);
chopstx_cond_signal (&cnd1);
chopstx_mutex_unlock (&mtx);
u = 1;
tty = tty_open ();
tty_wait_configured (tty);
count = 0;
m = 50;
while (1)
{
char s[LINEBUFSIZE];
u = 1;
tty_wait_connection (tty);
chopstx_usec_wait (50*1000);
puts("send ZLP");
/* Send ZLP at the beginning. */
tty_send (tty, s, 0);
memcpy (s, "xx: Hello, World with Chopstx!\r\n", 32);
s[0] = hexchar (count >> 4);
s[1] = hexchar (count & 0x0f);
count++;
puts("send hello");
if (tty_send (tty, s, 32) < 0)
continue;
while (1)
{
int size;
uint32_t usec;
puts("recv msg");
usec = 3000000; /* 3.0 seconds */
size = tty_recv (tty, s + 4, &usec);
if (size < 0)
break;
if (size)
{
size--;
puts("send msg");
s[0] = hexchar (size >> 4);
s[1] = hexchar (size & 0x0f);
s[2] = ':';
s[3] = ' ';
s[size + 4] = '\r';
s[size + 5] = '\n';
if (tty_send (tty, s, size + 6) < 0)
break;
}
u ^= 1;
}
}
return 0;
}
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