stm32f769i-disc_led.c

[詳解]

/** @file
    @brief      STM32F769I-Discovery LED ドライバ

    @date       2017.01.07
    @authoer    Takashi SHUDO
*/

#include "device.h"

#include "stm32f7xx_hal.h"
#include "stm32f7xx_hal_gpio.h"

/* Legacy GPIO Type Definition */
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 BSRR;     /*!< GPIO port bit set/reset register,      Address offset: 0x18      */
        __IO uint16_t BRR;      /*!< GPIO port bit set/reset 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: 0x20-0x24 */
} GPIO_LegacyTypeDef;

/* LED1 */ 
#define GPIO_LED1               (GPIOJ)
#define GPIO_LED                (GPIOJ)
#define RCC_AHBPeriph_GPIO_LED1 (RCC_AHB1ENR_GPIOJEN)
#define RCC_AHBPeriph_GPIO_LED  (RCC_AHB1ENR_GPIOJEN)
#define LED_D1                  (GPIO_PIN_13)
#define LED1_IO_HI(x)           (((GPIO_LegacyTypeDef *)GPIO_LED1)->BSRR = x)
#define LED1_IO_LO(x)           (((GPIO_LegacyTypeDef *)GPIO_LED1)->BRR = x)
#define LED_D1_OFF()            LED1_IO_LO(LED_D1)              /* Active High */
#define LED_D1_ON()             LED1_IO_HI(LED_D1)              /* Active High */
#define LED_OFF(x)              LED1_IO_LO(LED_D1)              /* Active High */
#define LED_ON(x)               LED1_IO_HI(LED_D1)              /* Active High */
/* LED2 */
#define GPIO_LED2               (GPIOJ)
#define RCC_AHBPeriph_GPIO_LED2 (RCC_AHB1ENR_GPIOJEN)
#define LED_D2                  (GPIO_PIN_5)
#define LED2_IO_HI(x)           (((GPIO_LegacyTypeDef *)GPIO_LED2)->BSRR = x)
#define LED2_IO_LO(x)           (((GPIO_LegacyTypeDef *)GPIO_LED2)->BRR = x)
#define LED_D2_OFF()            LED2_IO_LO(LED_D2)              /* Active High */
#define LED_D2_ON()             LED2_IO_HI(LED_D2)              /* Active High */
/* LED3 (ArduinoUNO Style SCK/LED Pin) */
#define GPIO_LED3               (GPIOA)
#define RCC_AHBPeriph_GPIO_LED3 (RCC_AHB1ENR_GPIOAEN)
#define LED_D3                  (GPIO_PIN_12)
#define LED3_IO_HI(x)           (((GPIO_LegacyTypeDef *)GPIO_LED3)->BSRR = x)
#define LED3_IO_LO(x)           (((GPIO_LegacyTypeDef *)GPIO_LED3)->BRR = x)
#define LED_D3_OFF()            LED3_IO_LO(LED_D3)              /* Active High */
#define LED_D3_ON()             LED3_IO_HI(LED_D3)              /* Active High */

static unsigned char led_stat;

static void LED_Configuration(void)
{
        GPIO_InitTypeDef GPIO_InitStructure;

        /* Enable GPIO_LED clock */
        RCC->AHB1ENR |= (RCC_AHBPeriph_GPIO_LED | RCC_AHBPeriph_GPIO_LED3);

        /* Configure GPIO for LEDs as Output push-pull */
        GPIO_InitStructure.Pin                  = LED_D1 | LED_D2;
        GPIO_InitStructure.Mode                 = GPIO_MODE_OUTPUT_PP;
        GPIO_InitStructure.Pull                 = GPIO_NOPULL;
        GPIO_InitStructure.Speed                = GPIO_SPEED_HIGH;
        GPIO_InitStructure.Alternate    = 0;
        HAL_GPIO_Init(GPIO_LED, &GPIO_InitStructure);

        GPIO_InitStructure.Pin                  = LED_D3;
        HAL_GPIO_Init(GPIO_LED3, &GPIO_InitStructure);

        LED_D1_OFF();
        LED_D2_OFF();
        LED_D3_OFF();
}

/**
   @brief       LEDドライバの登録

   @param[in]   param   未使用

   @return      !=0:エラー
*/
static int led_register(struct st_device *dev, char *param)
{
        LED_Configuration();

        led_stat = 0;

        return 0;
}

/**
   @brief       LEDの状態を取得する

   @param[out]  rd      LEDデータポインタ

   @return      !=0:データあり 0:データ無し
*/
static int led_getc(struct st_device *dev, unsigned char *rd)
{
        *rd = led_stat;

        return 1;
}

/**
   @brief       LEDの状態を設定する

   @param[out]  ch      LEDデータポインタ

   @return      1:正常終了,!=0:エラー
*/
static int led_putc(struct st_device *dev, unsigned char ch)
{
        if(ch & 0x01) {
                LED_D1_ON();
        } else {
                LED_D1_OFF();
        }

        if(ch & 0x02) {
                LED_D2_ON();
        } else {
                LED_D2_OFF();
        }

        if(ch & 0x04) {
                LED_D3_ON();
        } else {
                LED_D3_OFF();
        }

        led_stat = (ch & 0x07);

        return 1;
}

static int led_suspend(struct st_device *dev)
{
        return 0;
}

static int led_resume(struct st_device *dev)
{
        return 0;
}

const struct st_device led_device = {
        .name           = DEF_DEV_NAME_LED,
        .explan         = "STM32F769I-Discovery LED",
        .register_dev   = led_register,
        .getc           = led_getc,
        .putc           = led_putc,
        .suspend        = led_suspend,
        .resume         = led_resume,
}; //!< LEDドライバ