STM32L010とGPIOで約800khz(1.25us)を作る(節電4MHz内部電圧1.5V) HAL

x Mbedのリビジョン143

目的
GPIOのテスト

いろいろ
ごめん、当然、速度が上がらなかった。
667kHzで妥協
たぶん、秋月で買ったWS2812Bは、光るはず。
俺に続け!!
LED1個分(約5mA)を努力の結果、節電ボタ電駆動できるかも?
VSCのcubeideに移植できるかも?



/* STM32L010F6P6  -> Mbed NUCLEO-L011K4 program by caa45040 */

//IO Sppd is The 667.53kHz (1.499us)

# include "mbed.h"

# define on1   0b0000000000010000
# define off1  0b0000000000000000

//DigitalOut myled(PA_4);

int main() {

    //クロックの初期化
    HAL_RCC_DeInit();

    //電圧を下げる
    __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);//4Mhz 1.5 560uA

    /* 4MHz */
    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
    RCC_OscInitStruct.HSIState = RCC_HSI_DIV4;
    RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
    HAL_RCC_OscConfig(&RCC_OscInitStruct);
    RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                                  |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
    HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0);

    /* PA4 OUTPUT MODE */
    __HAL_RCC_GPIOA_CLK_ENABLE();
    GPIO_InitTypeDef GPIO_InitStruct = {0};
    GPIO_InitStruct.Pin = GPIO_PIN_4;
    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);

    __disable_irq(); // disable interrupt
    //__enable_irq(); // enable interrupt

   //1:1
    while(1) {

        //1
        GPIOA->ODR = on1;
        GPIOA->ODR = on1;
        GPIOA->ODR = on1;

        GPIOA->ODR = off1;
        GPIOA->ODR = off1;


        //2
        GPIOA->ODR = on1;
        GPIOA->ODR = on1;

        GPIOA->ODR = off1;
        GPIOA->ODR = off1;
        GPIOA->ODR = off1;



    }//while

}//main