/*!
\brief set GPIO output type and speed
\param[in] port
\arg GPIOx(x = A,B,C,D,F)
\param[in] mode
\arg GPIO_OTYPE_PP: push pull mode
\arg GPIO_OTYPE_OD: open drain mode
\param[in] speed
\arg GPIO_OSPEED_2MHZ: output max speed 2M
\arg GPIO_OSPEED_10MHZ: output max speed 10M
\arg GPIO_OSPEED_50MHZ: output max speed 50M
\param[in] pin
\arg GPIO_PIN_x(x=0..15), GPIO_PIN_ALL
\param[out] none
\retval none
*/
void gpio_output_options_set(uint32_t port, uint8_t otype, uint8_t speed,uint16_t pin)
{
uint16_t i;
uint32_t ospeedr;
if(0x1 == otype){
GPIO_OMODE(port) |= pin;
}else{
GPIO_OMODE(port) &= ~pin;
}
/* get the specified pin output speed bits value */
ospeedr = GPIO_OSPD(port);
for (i = 0; i < 16; i++){
if (!((1 << i) & pin)){
continue;
}
/* clear the specified pin output speed bits */
ospeedr &= ~GPIO_OSPEED_MASK(i);
ospeedr |= GPIO_OSPEED_SET(i, speed);
}
GPIO_OSPD(port) = ospeedr;
}
/*!
\brief set GPIO output type and speed
\param[in] gpio_periph: GPIOx(x = A,B,C,F)
only one parameter can be selected which is shown as below:
\arg GPIOx(x = A,B,C,F)
\param[in] otype: gpio pin output mode
\arg GPIO_OTYPE_PP: push pull mode
\arg GPIO_OTYPE_OD: open drain mode
\param[in] speed: gpio pin output max speed
\arg GPIO_OSPEED_2MHZ: output max speed 2MHz
\arg GPIO_OSPEED_10MHZ: output max speed 10MHz
\arg GPIO_OSPEED_50MHZ: output max speed 50MHz
\param[in] pin: GPIO pin
one or more parameters can be selected which are shown as below:
\arg GPIO_PIN_x(x=0..15), GPIO_PIN_ALL
\param[out] none
\retval none
*/
void gpio_output_options_set(uint32_t gpio_periph, uint8_t otype, uint32_t speed, uint32_t pin)
{
uint16_t i;
uint32_t ospeed;
if(GPIO_OTYPE_OD == otype){
GPIO_OMODE(gpio_periph) |= (uint32_t)pin;
}else{
GPIO_OMODE(gpio_periph) &= (uint32_t)(~pin);
}
/* get the specified pin output speed bits value */
ospeed = GPIO_OSPD(gpio_periph);
for(i = 0U;i < 16U;i++){
if((1U << i) & pin){
/* clear the specified pin output speed bits */
ospeed &= ~GPIO_OSPEED_MASK(i);
/* set the specified pin output speed bits */
ospeed |= GPIO_OSPEED_SET(i,speed);
}
}
GPIO_OSPD(gpio_periph) = ospeed;
}