增加协议 发送队列 50ms发送数据

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BSP/Src/Timer.c

@@ -0,0 +1,58 @@
+#include "Timer.h"
+
+#include "Include.h"
+
+#include "Usart.h"
+
+uint8_t usart_test_dat[5] = {0x11,0x22,0x33,0x44,0x55};
+uint8_t usart_test_len = 5;
+
+uint8_t tim_cnt = 0;
+uint8_t tim_flag = 0;
+
+
+void Tim2Init(void)
+{
+	TIM_TimeBaseInitTypeDef   TIM_TimeBaseInitStruct;
+	NVIC_InitTypeDef          NVIC_InitStruct;
+	
+	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
+	
+	TIM_DeInit(TIM2);
+	TIM_TimeBaseInitStruct.TIM_ClockDivision = TIM_CKD_DIV1;
+	TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up;
+	TIM_TimeBaseInitStruct.TIM_Period = 249;
+	TIM_TimeBaseInitStruct.TIM_Prescaler = 8399;
+	TIM_TimeBaseInit(TIM2, &TIM_TimeBaseInitStruct);
+	
+	NVIC_InitStruct.NVIC_IRQChannel = TIM2_IRQn;
+	NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
+	NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 5;
+	NVIC_InitStruct.NVIC_IRQChannelSubPriority = 0;
+	NVIC_Init(&NVIC_InitStruct);
+	
+
+	TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
+	TIM_Cmd(TIM2, ENABLE);//¿ªÆô¶¨Ê±50ms
+}
+
+void TIM2_IRQHandler(void)
+{
+	if(RESET != TIM_GetITStatus(TIM2, TIM_IT_Update))
+  {
+		TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
+	
+		tim_flag = 1;
+		
+		tim_cnt++;
+		
+		if(tim_cnt == 10)
+		{
+			GPIO_ToggleBits(GPIOE, GPIO_Pin_2);
+		}
+		
+		//TIM_Cmd(TIM2, DISABLE);
+	}		
+}
+
+