CH32V307 IO翻转速度测试

记录RISC-V MCU CH32V307 IO极限翻转速度。

测试代码如下：

/*********************************************************************
 * @fn      GPIO_Toggle_INIT
 *
 * @brief   Initializes GPIOA.0
 *
 * @return  none
 */
void GPIO_Toggle_INIT(void)
{
    GPIO_InitTypeDef GPIO_InitStructure = {0};

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
}

/*********************************************************************
 * @fn      main
 *
 * @brief   Main program.
 *
 * @return  none
 */
int main(void)
{
    USART_Printf_Init(115200);
    printf("SystemClk:%d\r\n", SystemCoreClock);

    printf("GPIO Toggle TEST\r\n");
    GPIO_Toggle_INIT();

    asm("li t0,1");
    asm("li t2,1");
    asm("li t1,0x4001080c");

    while(1)
    {

//        asm("sw t0,(t1)");
//        asm("sw zero,(t1)");

//        asm("sw t0,(t1)");
//        asm("xori t0,t0,1");
//        asm("xor t0,t0,t2");

//        GPIOA->OUTDR ^= GPIO_Pin_0;
        GPIOA->OUTDR = 1;
        GPIOA->OUTDR = 0;

    }
}