I am trying to figure out some online resource to figure out how to configure the GPIO Registers on an STM32F4 Cortex M4 board. I only have examples for the Cortex M4
typedef struct
{
__IO uint32_t MODER; /*!< GPIO port mode register, Address offset: 0x00 */
__IO uint32_t OTYPER; /*!< GPIO port output type register, Address offset: 0x04 */
__IO uint32_t OSPEEDR; /*!< GPIO port output speed register, Address offset: 0x08 */
__IO uint32_t PUPDR; /*!< GPIO port pull-up/pull-down register, Address offset: 0x0C */
__IO uint32_t IDR; /*!< GPIO port input data register, Address offset: 0x10 */
__IO uint32_t ODR; /*!< GPIO port output data register, Address offset: 0x14 */
__IO uint16_t BSRRL; /*!< GPIO port bit set/reset low register, Address offset: 0x18 */
__IO uint16_t BSRRH; /*!< GPIO port bit set/reset high register, Address offset: 0x1A */
__IO uint32_t LCKR; /*!< GPIO port configuration lock register, Address offset: 0x1C */
__IO uint32_t AFR[2]; /*!< GPIO alternate function registers, Address offset: 0x24-0x28 */
} GPIO_TypeDef;
Here are the registers. But there is nothing online that shows me how to actually configure a pin to say output/input etc. Can someone point me a resource?