STM32G031とDS1307で時間合わせ(HAL)

x 過去ログを見よ
x PA_0をOBでGPIOに出来る人むけ
x STM32G031は、秋月で売っているSTM32G031J6M6の事

目的
秋月のDS1307ZN+T&R I-06950

//HAL_oled16x24_64_ds1307_set_031_1

#include "mbed.h"


#define HH  19
#define MM  28


int main()
{

    __HAL_RCC_GPIOA_CLK_ENABLE();

    GPIO_InitTypeDef GPIO_InitStruct = {0};

    GPIO_InitStruct.Pin = GPIO_PIN_11|GPIO_PIN_12;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
    GPIO_InitStruct.Pull = GPIO_PULLUP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct.Alternate = GPIO_AF6_I2C2;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_0;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);


    __HAL_RCC_I2C2_CLK_ENABLE();

    I2C_HandleTypeDef hi2c2;

    hi2c2.Instance = I2C2;
    hi2c2.Init.Timing = 0x10707DBC;
    hi2c2.Init.OwnAddress1 = 0;
    hi2c2.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
    hi2c2.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
    hi2c2.Init.OwnAddress2 = 0;
    hi2c2.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
    hi2c2.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
    hi2c2.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
    HAL_I2C_Init(&hi2c2);

    HAL_I2CEx_ConfigAnalogFilter(&hi2c2, I2C_ANALOGFILTER_ENABLE);

    HAL_I2CEx_ConfigDigitalFilter(&hi2c2, 0);


    HAL_Delay(200);

    uint8_t data_read[8];  //i2cバッファー
    data_read[0]=0;
    data_read[1]=0;
    data_read[2]= ( MM /10)*16+( MM %10);
    data_read[3]= ( HH /10)*16+( HH %10);
    data_read[4]=3;
    data_read[5]=1;
    data_read[6]=1;
    data_read[7]=0x20;

    HAL_I2C_Master_Transmit(&hi2c2, (0xD0),
                            data_read, 8, 3000);

    while(1) {

        // 1秒待つ
        HAL_GPIO_WritePin(GPIOA, GPIO_PIN_0, GPIO_PIN_SET);
        HAL_Delay(500);
        HAL_GPIO_WritePin(GPIOA, GPIO_PIN_0, GPIO_PIN_RESET);
        HAL_Delay(500);

    }//while

}//main