inline void threewire_clk_high(t_hydra_console *con)
{
mode_config_proto_t* proto = &con->mode->proto;
while (!(TIM4->SR & TIM_SR_UIF)) {
}
bsp_gpio_set(BSP_GPIO_PORTB, proto->config.rawwire.clk_pin);
TIM4->SR &= ~TIM_SR_UIF; //clear overflow flag
}
inline void threewire_sdo_high(t_hydra_console *con)
{
mode_config_proto_t* proto = &con->mode->proto;
bsp_gpio_set(BSP_GPIO_PORTB, proto->config.rawwire.sdo_pin);
}
int cmd_gpio(t_hydra_console *con, t_tokenline_parsed *p)
{
uint16_t gpio[3] = { 0 };
int mode, pull, state, port, pin, read, period, continuous, t, max;
bool mode_changed, pull_changed;
char *str, *s;
mode_changed = false;
pull_changed = false;
t = 1;
mode = MODE_CONFIG_DEV_GPIO_IN;
pull = MODE_CONFIG_DEV_GPIO_NOPULL;
state = 0;
period = 100;
read = FALSE;
continuous = FALSE;
while (p->tokens[t]) {
switch (p->tokens[t]) {
case T_MODE:
switch (p->tokens[++t]) {
case T_IN:
mode = MODE_CONFIG_DEV_GPIO_IN;
break;
case T_OUT:
mode = MODE_CONFIG_DEV_GPIO_OUT_PUSHPULL;
break;
case T_OPEN_DRAIN:
mode = MODE_CONFIG_DEV_GPIO_OUT_OPENDRAIN;
break;
}
mode_changed = true;
break;
case T_PULL:
switch (p->tokens[++t]) {
case T_UP:
pull = MODE_CONFIG_DEV_GPIO_PULLUP;
break;
case T_DOWN:
pull = MODE_CONFIG_DEV_GPIO_PULLDOWN;
break;
case T_FLOATING:
pull = MODE_CONFIG_DEV_GPIO_NOPULL;
break;
}
pull_changed = true;
break;
case T_ON:
case T_OFF:
if (state) {
cprintf(con, "Please choose one of 'on' or 'off'.\r\n");
return FALSE;
}
state = p->tokens[t];
break;
case T_READ:
read = TRUE;
break;
case T_PERIOD:
t += 2;
memcpy(&period, p->buf + p->tokens[t], sizeof(int));
break;
case T_CONTINUOUS:
continuous = TRUE;
break;
case T_ARG_STRING:
str = p->buf + p->tokens[++t];
if (strlen(str) < 3) {
cprintf(con, str_pin_error, str);
return FALSE;
}
/* Allow case-insensitive pin names. */
if (str[0] > 0x60)
str[0] -= 0x20;
if (str[1] > 0x60)
str[1] -= 0x20;
if (str[0] != 'P') {
cprintf(con, str_pin_error, str);
return FALSE;
}
if (str[1] < 'A' || str[1] > 'C') {
cprintf(con, str_pin_error, str);
return FALSE;
}
port = str[1] - 'A';
if (str[2] == '*') {
if (port == 1)
/* 0 to 11 for port B */
gpio[port] = 0x0FFF;
else
/* 0 to 15 */
gpio[port] = 0xFFFF;
} else {
pin = strtoul(str + 2, &s, 10);
if ((*s != 0 && *s != '-') || pin < 0 || pin > 15
|| (port == 1 && pin > 11)) {
cprintf(con, str_pin_error, str);
return FALSE;
}
gpio[port] |= 1 << pin;
if (*s == '-') {
/* Range */
max = strtoul(s + 1, &s, 10);
if (max <= pin || max > 15 ||
(port == 1 && max > 11)) {
cprintf(con, str_pin_error, str);
return FALSE;
}
while (pin <= max)
gpio[port] |= 1 << pin++;
}
}
break;
}
t++;
}
if (!gpio[0] && !gpio[1] && !gpio[2]) {
cprintf(con, "Please select at least one GPIO pin.\r\n");
return FALSE;
}
if (!state && !read) {
cprintf(con, "Please select either 'read' or on/off.\r\n");
return FALSE;
}
if((mode_changed == true) || (pull_changed == true)) {
for (port = 0; port < 3; port++) {
for (pin = 0; pin < 16; pin++) {
if (!(gpio[port] & (1 << pin)))
continue;
bsp_gpio_init(ports[port], pin, mode, pull);
}
}
}
if (!state) {
if (continuous)
read_continuous(con, gpio, period);
else
read_once(con, gpio);
} else {
if (state == T_ON)
cprintf(con, "Setting ");
else
cprintf(con, "Clearing ");
for (port = 0; port < 3; port++) {
if (!gpio[port])
continue;
for (pin = 0; pin < 16; pin++) {
if (!(gpio[port] & (1 << pin)))
continue;
if (state == T_ON)
bsp_gpio_set(ports[port], pin);
else
bsp_gpio_clr(ports[port], pin);
cprintf(con, "P%c%d ", port + 'A', pin);
}
}
cprint(con, "\r\n", 2);
}
return TRUE;
}