void am_pin_mode(rt_device_t dev, rt_base_t pin, rt_base_t mode)
{
if (mode == PIN_MODE_OUTPUT)
{
/* output setting */
am_hal_gpio_pin_config(pin, AM_HAL_GPIO_OUTPUT);
}
else if (mode == PIN_MODE_INPUT)
{
/* input setting: not pull. */
am_hal_gpio_pin_config(pin, AM_HAL_GPIO_INPUT);
}
else if (mode == PIN_MODE_INPUT_PULLUP)
{
/* input setting: pull up. */
am_hal_gpio_pin_config(pin, AM_HAL_GPIO_OPENDRAIN);
}
else
{
/* input setting:default. */
am_hal_gpio_pin_config(pin, AM_HAL_GPIO_INPUT);
}
}
int
hal_uart_init(int port, void *arg)
{
struct apollo2_uart_cfg *cfg;
uint32_t pincfg;
cfg = arg;
if (port >= UART_CNT) {
return SYS_EINVAL;
}
switch (cfg->suc_pin_tx) {
case 1:
pincfg = AM_HAL_GPIO_FUNC(2);
break;
case 7:
pincfg = AM_HAL_GPIO_FUNC(5);
break;
case 16:
pincfg = AM_HAL_GPIO_FUNC(6);
break;
case 20:
case 30:
pincfg = AM_HAL_GPIO_FUNC(4);
break;
case 22:
case 39:
pincfg = AM_HAL_GPIO_FUNC(0);
break;
default:
return SYS_EINVAL;
}
am_hal_gpio_pin_config(cfg->suc_pin_tx, pincfg);
switch (cfg->suc_pin_rx) {
case 2:
pincfg = AM_HAL_GPIO_FUNC(2);
break;
case 11:
case 17:
pincfg = AM_HAL_GPIO_FUNC(6);
break;
case 21:
case 31:
pincfg = AM_HAL_GPIO_FUNC(4);
break;
case 23:
case 40:
pincfg = AM_HAL_GPIO_FUNC(0);
break;
default:
return SYS_EINVAL;
}
pincfg |= AM_HAL_PIN_DIR_INPUT;
am_hal_gpio_pin_config(cfg->suc_pin_rx, pincfg);
/* RTS pin is optional. */
if (cfg->suc_pin_rts != 0) {
switch (cfg->suc_pin_rts) {
case 3:
pincfg = AM_HAL_GPIO_FUNC(0);
break;
case 5:
case 37:
pincfg = AM_HAL_GPIO_FUNC(2);
break;
case 13:
case 35:
pincfg = AM_HAL_GPIO_FUNC(6);
break;
case 41:
pincfg = AM_HAL_GPIO_FUNC(7);
break;
default:
return SYS_EINVAL;
}
am_hal_gpio_pin_config(cfg->suc_pin_rts, pincfg);
}
/* CTS pin is optional. */
if (cfg->suc_pin_cts != 0) {
switch (cfg->suc_pin_cts) {
case 4:
pincfg = AM_HAL_GPIO_FUNC(0);
break;
case 6:
case 38:
pincfg = AM_HAL_GPIO_FUNC(2);
break;
case 12:
case 36:
pincfg = AM_HAL_GPIO_FUNC(6);
break;
case 29:
pincfg = AM_HAL_GPIO_FUNC(4);
break;
default:
return SYS_EINVAL;
}
pincfg |= AM_HAL_PIN_DIR_INPUT;
am_hal_gpio_pin_config(cfg->suc_pin_cts, pincfg);
}
apollo2_uart_set_nvic(port);
return 0;
}
