library problem

Posted on May 04, 2017 at 09:30

Hi.

I can't find  GPIO_PinAFConfig(). when i write it function, i don't find GPIO_AF parameter.

void GPIO_PinAFConfig(GPIO_TypeDef* GPIOx, uint16_t GPIO_PinSource, uint8_t GPIO_AF)

{

uint32_t temp = 0x00;

uint32_t temp_2 = 0x00;

/* Check the parameters */

assert_param(IS_GPIO_ALL_PERIPH(GPIOx));

assert_param(IS_GPIO_PIN_SOURCE(GPIO_PinSource));

assert_param(IS_GPIO_AF(GPIO_AF));

temp = ((uint32_t)(GPIO_AF) << ((uint32_t)((uint32_t)GPIO_PinSource & (uint32_t)0x07) * 4));

GPIOx->AFR[GPIO_PinSource >> 0x03] &= ~((uint32_t)0xF << ((uint32_t)((uint32_t)GPIO_PinSource & (uint32_t)0x07) * 4));

temp_2 = GPIOx->AFR[GPIO_PinSource >> 0x03] | temp;

GPIOx->AFR[GPIO_PinSource >> 0x03] = temp_2;

}