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#include "project.h"
static struct gpio
{
int id;
uint32_t pin;
uint32_t func;
uint32_t bit;
} gpios[] =
{
{
0, PERIPHS_IO_MUX_GPIO0_U, FUNC_GPIO0, BIT0},
{
2, PERIPHS_IO_MUX_GPIO2_U, FUNC_GPIO2, BIT2},
{
12, PERIPHS_IO_MUX_MTDI_U, FUNC_GPIO12, BIT12},
{
13, PERIPHS_IO_MUX_MTCK_U, FUNC_GPIO13, BIT13},
{
14, PERIPHS_IO_MUX_MTMS_U, FUNC_GPIO14, BIT14},
{
15, PERIPHS_IO_MUX_MTDO_U, FUNC_GPIO15, BIT15}
};
#define N_GPIOS (sizeof(gpios)/sizeof(gpios[0]))
static os_timer_t gpio_timer;
static os_timer_t gpio_intr_timer;
void ICACHE_FLASH_ATTR
gpio_dispatch (void)
{
uint32_t v = gpio_input_get ();
msg_send (v);
}
static void ICACHE_FLASH_ATTR
gpio_intr_timer_cb (void *arg)
{
gpio_dispatch ();
}
static void ICACHE_FLASH_ATTR
gpio_timer_cb (void *arg)
{
gpio_dispatch ();
}
/* Docs say you can't call os_timer_arm in an interrupt, yet the examples do */
static void
gpio_intr_handler (void *arg)
{
int i;
uint32 status = GPIO_REG_READ (GPIO_STATUS_ADDRESS);
/* Clear any interrupts */
for (i = 0; i < N_GPIOS; ++i)
if (status & gpios[i].bit)
GPIO_REG_WRITE (GPIO_STATUS_W1TC_ADDRESS, status & gpios[i].bit);
/*Arm the timer*/
os_timer_disarm (&gpio_intr_timer);
os_timer_setfn (&gpio_intr_timer, gpio_intr_timer_cb, NULL);
os_timer_arm (&gpio_intr_timer, 5, 0);
}
void ICACHE_FLASH_ATTR
gpio_page (struct espconn *conn)
{
char *page = os_zalloc (1024);
char *ptr = page;
int i;
uint32_t j, v;
if (!page)
{
webserver_send_reply (conn, 400, "text/html",
"<html><head></head><body>Out of memory</body></html>",
0);
return;
}
ptr += os_sprintf (ptr, "<html><head>");
ptr += os_sprintf (ptr, "<style>\n"
"table {\n"
"border-collapse: collapse;\n"
"}\n"
"table, th, td {\n"
"border: 1px solid black;\n" "}\n" "</style>");
ptr += os_sprintf (ptr, "</head><body>");
v = gpio_input_get ();
ptr += os_sprintf (ptr, "<h2>GPIO: 0x%04x</h2><br/>", v);
ptr += os_sprintf (ptr, "<table>");
for (i = 0; i < 16; ++i)
{
j = 1 << i;
ptr +=
os_sprintf (ptr,
"<tr><td>%d</td><td>0x%04x</td><td>%s</td></tr>",
i, j, (j & v) ? "High" : "Low");
}
ptr += os_sprintf (ptr, "</table></body></html>");
webserver_send_reply (conn, 200, "text/html", page, ptr - page);
os_free (page);
}
void ICACHE_FLASH_ATTR
gpio_init (void)
{
int i;
ETS_GPIO_INTR_DISABLE ();
ETS_GPIO_INTR_ATTACH (gpio_intr_handler, NULL);
for (i = 0; i < N_GPIOS; ++i)
{
PIN_FUNC_SELECT (gpios[i].pin, gpios[i].func);
PIN_PULLUP_EN (gpios[i].pin);
/* disable drivers */
gpio_output_set (0, 0, 0, gpios[i].bit);
gpio_register_set (GPIO_PIN_ADDR (gpios[i].id),
GPIO_PIN_INT_TYPE_SET (GPIO_PIN_INTR_DISABLE) |
GPIO_PIN_PAD_DRIVER_SET (GPIO_PAD_DRIVER_DISABLE) |
GPIO_PIN_SOURCE_SET (GPIO_AS_PIN_SOURCE));
GPIO_REG_WRITE (GPIO_STATUS_W1TC_ADDRESS, gpios[i].bit);
gpio_pin_intr_state_set (GPIO_ID_PIN (gpios[i].id),
GPIO_PIN_INTR_ANYEDGE);
}
ETS_GPIO_INTR_ENABLE ();
os_timer_disarm (&gpio_timer);
os_timer_setfn (&gpio_timer, (os_timer_func_t *) gpio_timer_cb, NULL);
os_timer_arm (&gpio_timer, 10000, 1);
}
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