/* use gpio 19, 20, 21 */
static int led_init(void *unused)
{
gpio_init();
gpio_dir_af(19, 1, 0, 0);
gpio_dir_af(20, 1, 0, 0);
gpio_dir_af(21, 1, 0, 0);
return 0;
}
/* Public methods follow */
static int w1_gpio_reset(struct w1_bus *bus)
{
int ret;
gpio_dir_af(bus->detail, GPIO_DIR_IN, 0, GPIO_AF_GPIO);
gpio_dir(bus->detail, GPIO_DIR_OUT, 0);
udelay(480); /* low pulse */
gpio_dir(bus->detail, GPIO_DIR_IN, 0);
udelay(100);
ret = !gpio_get(bus->detail); /* 0 == present */
udelay(480);
if (!gpio_get(bus->detail))
return 0; /* stuck low: not present */
return ret;
}
/* Public methods follow */
static int w1_gpio_reset(struct w1_bus *bus)
{
int ret;
gpio_dir_af(bus->detail, 0, 0, 0); /* input, novalue, af = 0 */
gpio_dir(bus->detail, 1, 0); /* low pulse */
udelay(480);
gpio_dir(bus->detail, 0, 0); /* input */
udelay(100);
ret = !gpio_get(bus->detail); /* 0 == present */
udelay(480);
if (!gpio_get(bus->detail))
return 0; /* stuck low: not present */
return ret;
}
/* Handshake */
int spidy_main(void *unused)
{
int found=0, i=0;
/* Gpio initialization */
gpio_init();
/* MOD GPIO DIR AF */
for (i=0; i<18; i++)
gpio_dir_af(used_gpio[i], 1, 0, 0);
i=0;
puts("Your friendly neighborhood Spider-Man\n");
/* FIXME: spidy_reset(); */
/* Handshake */
while (!found) {
putc(CHAR_MSTART);
/* read from RBR start character */
if ( getCommand() == CHAR_SSTART)
found=1;
}
putc(CHAR_MREADY);
/* Take at least 18 commands --> BLOCKING */
while (i<18) {
/* ready to get buffer */
while (!getBuffer())
;
/* if a buffer has been caught send a ready */
i += saveBuffer();
putc(CHAR_MREADY);
}
frameIndex=0;
portNow=0;
portLast=-1;
return 0;
}
static int lcd_cmd(struct spi_dev *dev, int cmd)
{
uint8_t buf[1] = {cmd};
struct spi_obuf sob = {.len = 1, .buf = buf};
int ret;
gpio_set(GPIODC, 0);
ret = spi_write(dev, SPI_F_DEFAULT, &sob);
return ret;
}
static int lcd_data(struct spi_dev *dev, int cmd)
{
uint8_t buf[1] = {cmd};
struct spi_obuf sob = {.len = 1, .buf = buf};
int ret;
gpio_set(GPIODC, 1);
ret = spi_write(dev, SPI_F_DEFAULT, &sob);
return ret;
}
static int lcd_task_init(void *arg)
{
struct spi_dev *dev = arg;
printf("%s: %i\n", __func__, __LINE__);
/* My board other devices on SPI: disable their CS */
gpio_dir_af(GPIOCS_NO0, 1, 1, 0);
gpio_set(GPIOCS_NO0, 1);
gpio_dir_af(GPIOCS_NO1, 1, 1, 0);
gpio_set(GPIOCS_NO1, 1);
/* This is our gpio and the reset */
gpio_dir_af(GPIOCS, 1, 1, 0);
gpio_set(GPIOCS, 1);
gpio_dir_af(13, 1, 1, 0);
gpio_set(13, 1);
/* d/c */
gpio_dir_af(GPIODC, 1, 1, 0);
gpio_set(GPIODC, 1);
spi_create(&spi_dev);
lcd_cmd(dev, 0x21);
lcd_cmd(dev, 0x90);
lcd_cmd(dev, 0x20);
lcd_cmd(dev, 0x0c);
return 0;
}
/* The task sends out one packet and reads pending ones */
static void *lcd_task_run(void *arg)
{
struct spi_dev *dev = arg;
static u8 inpacket[50];
int i, j;
printf("%s: %i\n", __func__, __LINE__);
printf("cmd: %i\n", i);
for (j = 0; j < 0x20; j++)
i = lcd_data(dev, j);
return dev;
}
static struct bathos_task __task t_lcd = {
.name = "n5110", .period = HZ,
.arg = &spi_dev,
.init = lcd_task_init, .job = lcd_task_run,
.release = 15
};
