void gpio_set_output_options(u32 gpioport, u8 otype, u8 speed, u16 gpios)
{
u16 i;
u32 ospeedr;
if (otype == 0x1)
GPIO_OTYPER(gpioport) |= gpios;
else
GPIO_OTYPER(gpioport) &= ~gpios;
ospeedr = GPIO_OSPEEDR(gpioport);
for (i = 0; i < 16; i++) {
if (!((1 << i) & gpios))
continue;
ospeedr &= ~GPIO_OSPEED_MASK(i);
ospeedr |= GPIO_OSPEED(i, speed);
}
GPIO_OSPEEDR(gpioport) = ospeedr;
}
/** @brief Set GPIO Output Options
When the pin is set to output mode, this sets the configuration (analog/digital
and open drain/push pull) and speed, for a set of GPIO pins on a given GPIO
port.
@param[in] gpioport Unsigned int32. Port identifier @ref gpio_port_id
@param[in] otype Unsigned int8. Pin output type @ref gpio_output_type
@param[in] speed Unsigned int8. Pin speed @ref gpio_speed
@param[in] gpios Unsigned int16. Pin identifiers @ref gpio_pin_id
If multiple pins are to be set, use bitwise OR '|' to separate
them.
*/
void gpio_set_output_options(uint32_t gpioport, uint8_t otype, uint8_t speed,
uint16_t gpios)
{
uint16_t i;
uint32_t ospeedr;
if (otype == 0x1) {
GPIO_OTYPER(gpioport) |= gpios;
} else {
GPIO_OTYPER(gpioport) &= ~gpios;
}
ospeedr = GPIO_OSPEEDR(gpioport);
for (i = 0; i < 16; i++) {
if (!((1 << i) & gpios)) {
continue;
}
ospeedr &= ~GPIO_OSPEED_MASK(i);
ospeedr |= GPIO_OSPEED(i, speed);
}
GPIO_OSPEEDR(gpioport) = ospeedr;
}