CodeMark跑分测试STM32G070
系统时钟配置64M，MDK优化选择了 -O3 -Otime，跑分结果是102，百度官方是142，差挺多，不知道是不是哪里没弄对，求指点。工程使用 Projects\NUCLEO-G070RB\Examples_LL\USART\USART_Communication_Tx_Init
栈设置4K
Stack_Size EQU 0x00001000
以下是一些函数接口代码
[*]void SystemClock_Config(void)
[*]{
[*]LL_FLASH_SetLatency(LL_FLASH_LATENCY_2);
[*]
[*]/* HSI configuration and activation */
[*]LL_RCC_HSI_Enable();
[*]while(LL_RCC_HSI_IsReady() != 1)
[*]{
[*]};
[*]
[*]/* Main PLL configuration and activation */
[*]LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_HSI, LL_RCC_PLLM_DIV_4, 80, LL_RCC_PLLR_DIV_5);
[*]LL_RCC_PLL_Enable();
[*]LL_RCC_PLL_EnableDomain_SYS();
[*]while(LL_RCC_PLL_IsReady() != 1)
[*]{
[*]};
[*]
[*]/* Set AHB prescaler*/
[*]LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
[*]
[*]/* Sysclk activation on the main PLL */
[*]LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_PLL);
[*]while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL)
[*]{
[*]};
[*]
[*]/* Set APB1 prescaler*/
[*]LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
[*]
[*]//LL_Init1msTick(56000000);
[*]
[*]/* Update CMSIS variable (which can be updated also through SystemCoreClockUpdate function) */
[*]LL_SetSystemCoreClock(64000000);
[*]
[*] NVIC_SetPriority(SysTick_IRQn, 0);
[*]NVIC_EnableIRQ(SysTick_IRQn);
[*]}
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[*]void start_time(void)
[*]{
[*] //GETMYTIME(&start_time_val);
[*] Tick = 0; //每次初始化时让tick数从0开始
[*] start_time_val = Tick;//当前tick数保存到全局变量start_time_val
[*] SysTick_Config(SystemCoreClock/1000); //配置并启动SysTick，这里配置Systick每隔1ms中断一次
[*]}
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[*]void stop_time(void)
[*]{
[*] // GETMYTIME(&stop_time_val);
[*] SysTick->CTRL = 0; //停止SysTick
[*] stop_time_val = Tick; //当前tick数保存到全局变量stop_time_val
[*]}
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[*]void SysTick_Handler(void)
[*]{
[*]Tick++;
[*]}
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[*]volatile ee_s32 seed4_volatile = 2000;
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说不定官方超频了，你没超。
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