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#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <chopstx.h>
#include "usb_lld.h"
#include "tty.h"
#include "board.h"
#include "command.h"
#include <sys.h>
static chopstx_mutex_t mtx;
static chopstx_cond_t cnd0;
static chopstx_cond_t cnd1;
uint8_t u;
static uint8_t v;
static uint8_t m; /* 0..100 */
static void
wait_for (uint32_t usec)
{
#if defined(BUSY_LOOP)
uint32_t count = usec * 6;
uint32_t i;
for (i = 0; i < count; i++)
asm volatile ("" : : "r" (i) : "memory");
#else
chopstx_usec_wait (usec);
#endif
}
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);
wait_for (m);
set_led (0);
wait_for (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;
wait_for (200*1000);
v = 1;
wait_for (200*1000);
}
return NULL;
}
#define PRIO_PWM 3
#define PRIO_BLK 2
extern uint8_t __process1_stack_base__[], __process1_stack_size__[];
extern uint8_t __process2_stack_base__[], __process2_stack_size__[];
#define STACK_ADDR_PWM ((uint32_t)__process1_stack_base__)
#define STACK_SIZE_PWM ((uint32_t)__process1_stack_size__)
#define STACK_ADDR_BLK ((uint32_t)__process2_stack_base__)
#define STACK_SIZE_BLK ((uint32_t)__process2_stack_size__)
static char hexchar (uint8_t x)
{
x &= 0x0f;
if (x <= 0x09)
return '0' + x;
else if (x <= 0x0f)
return 'a' + x - 10;
else
return '?';
}
extern void touch_init (void);
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;
touch_init ();
tty = tty_open ();
tty_wait_configured (tty);
count = 0;
m = 50;
while (1)
{
char s[LINEBUFSIZE];
connection_loop:
u = 1;
tty_wait_connection (tty);
chopstx_usec_wait (50*1000);
/* 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++;
if (tty_send (tty, s, 32) < 0)
continue;
while (1)
{
uint32_t usec;
/* Prompt */
if (tty_send (tty, "> ", 2) < 0)
break;
usec = 3000000; /* 3.0 seconds */
while (1)
{
int size = tty_recv (tty, s, &usec);
u ^= 1;
if (size < 0)
goto connection_loop;
if (size == 1)
/* Do nothing but prompt again. */
break;
else if (size)
{
/* Newline into NUL */
s[size - 1] = 0;
cmd_dispatch (tty, (char *)s);
break;
}
}
}
}
return 0;
}
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