通过步长方式解决频率过高时,因为驱动能力影响导致高电平翻转较慢导致占空比异常的问题

PLSR/PLSR/Core/Inc/tim.h

@@ -210,6 +210,7 @@ void PLSR_Section_PWM_Stop(void);
 void PLSR_Route_PWM_Stop();
 void PLSR_PWM_SetFrequency(uint32_t frequency);
 void PLSR_CalculateTimerParams(uint32_t frequency, uint16_t* prescaler, uint32_t* period);
+void PLSR_Fix_Compensated(uint32_t frequency, uint32_t* ccr);
 
 // ==================== PLSR路径控制函数 ====================
 void PLSR_Route_Init(PLSR_RouteConfig_t* route);      //<路径初始化

PLSR/PLSR/Core/Src/tim.c

@@ -141,7 +141,7 @@ void MX_TIM10_Init(void)
   htim10.Init.Prescaler = 83; // 预分频器设置为83，计数频率为1MHz
   htim10.Init.CounterMode = TIM_COUNTERMODE_UP;
   htim10.Init.Period = 9999;
-  htim10.Init.ClockDivision = TIM_CLOCKDIVISION_DIV2;
+  htim10.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
   htim10.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
   if (HAL_TIM_Base_Init(&htim10) != HAL_OK)
   {
@@ -403,7 +403,7 @@ void HAL_TIM_MspPostInit(TIM_HandleTypeDef* timHandle)
     GPIO_InitStruct.Pin = GPIO_PIN_6;
     GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
     GPIO_InitStruct.Pull = GPIO_NOPULL;
-    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
     GPIO_InitStruct.Alternate = GPIO_AF3_TIM10;
     HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);
 
@@ -597,28 +597,30 @@ void PLSR_PWM_Start(void)
 {
     if (PlsrRoute.route_state == PLSR_ROUTE_RUNNING)   //<只有在路径运行状态下才可以进行pwm输出
     {
+        uint32_t ccr = (htim10.Init.Period + 1) / 2;
+        PLSR_Fix_Compensated(PlsrRoute.current_freq,&ccr);
         StopFlag = 0;
         // 根据output_port选择目标定时器并启动PWM输出
         switch(PlsrRoute.output_port)
         {
             case 0: // TIM10
-                __HAL_TIM_SET_COMPARE(&htim10, TIM_CHANNEL_1, htim10.Init.Period / 2); // 设置占空比为50%
+                __HAL_TIM_SET_COMPARE(&htim10, TIM_CHANNEL_1, ccr); // 设置占空比为50%
                 break;
                 
             case 1: // TIM11
-                __HAL_TIM_SET_COMPARE(&htim11, TIM_CHANNEL_1, htim11.Init.Period / 2); // 设置占空比为50%
+                __HAL_TIM_SET_COMPARE(&htim11, TIM_CHANNEL_1, ccr); // 设置占空比为50%
                 break;
                 
             case 2: // TIM13
-                __HAL_TIM_SET_COMPARE(&htim13, TIM_CHANNEL_1, htim13.Init.Period / 2); // 设置占空比为50%
+                __HAL_TIM_SET_COMPARE(&htim13, TIM_CHANNEL_1, ccr); // 设置占空比为50%
                 break;
                 
             case 3: // TIM14
-                __HAL_TIM_SET_COMPARE(&htim14, TIM_CHANNEL_1, htim14.Init.Period / 2); // 设置占空比为50%
+                __HAL_TIM_SET_COMPARE(&htim14, TIM_CHANNEL_1, ccr); // 设置占空比为50%
                 break;
                 
             default: // 默认使用TIM10
-                __HAL_TIM_SET_COMPARE(&htim10, TIM_CHANNEL_1, htim10.Init.Period / 2); // 设置占空比为50%
+                __HAL_TIM_SET_COMPARE(&htim10, TIM_CHANNEL_1, ccr); // 设置占空比为50%
                 break;
         }
     }
@@ -709,6 +711,7 @@ void PLSR_PWM_SetFrequency(uint32_t frequency)
 {
     uint16_t prescaler = 0;     // 预分频器值
     uint32_t period = 0;        // 自动重载值(周期)
+    uint32_t ccr = 0;
     
     // 频率范围检查 - 确保频率在1hz到100khz范围内
     if(frequency < PLSR_PWM_FREQ_MIN || frequency > PLSR_PWM_FREQ_MAX)
@@ -718,7 +721,8 @@ void PLSR_PWM_SetFrequency(uint32_t frequency)
     
     // 计算最佳定时器参数 - 根据目标频率计算预分频器和周期值
     PLSR_CalculateTimerParams(frequency, &prescaler, &period);
-    
+    ccr = (period + 1) / 2;
+    PLSR_Fix_Compensated(frequency,&ccr);
     // 参数有效性检查 - 防止period为0导致除零错误
     if(period == 0)
     {
@@ -731,35 +735,35 @@ void PLSR_PWM_SetFrequency(uint32_t frequency)
             __HAL_TIM_SET_PRESCALER(&htim10, prescaler);
             __HAL_TIM_SET_AUTORELOAD(&htim10, period);
             if(StopFlag == 0)
-            __HAL_TIM_SET_COMPARE(&htim10, TIM_CHANNEL_1, period / 2);
+            __HAL_TIM_SET_COMPARE(&htim10, TIM_CHANNEL_1, ccr);
             break;
             
         case 1: // TIM11
             __HAL_TIM_SET_PRESCALER(&htim11, prescaler);
             __HAL_TIM_SET_AUTORELOAD(&htim11, period);
             if(StopFlag == 0)
-            __HAL_TIM_SET_COMPARE(&htim11, TIM_CHANNEL_1, period / 2);
+            __HAL_TIM_SET_COMPARE(&htim11, TIM_CHANNEL_1, ccr);
             break;
             
         case 2: // TIM13
             __HAL_TIM_SET_PRESCALER(&htim13, prescaler);
             __HAL_TIM_SET_AUTORELOAD(&htim13, period);
             if(StopFlag == 0)
-            __HAL_TIM_SET_COMPARE(&htim13, TIM_CHANNEL_1, period / 2);
+            __HAL_TIM_SET_COMPARE(&htim13, TIM_CHANNEL_1, ccr);
             break;
             
         case 3: // TIM14
             __HAL_TIM_SET_PRESCALER(&htim14, prescaler);
             __HAL_TIM_SET_AUTORELOAD(&htim14, period);
             if(StopFlag == 0)
-            __HAL_TIM_SET_COMPARE(&htim14, TIM_CHANNEL_1, period / 2);
+            __HAL_TIM_SET_COMPARE(&htim14, TIM_CHANNEL_1, ccr);
             break;
             
         default: // 默认使用TIM10
             __HAL_TIM_SET_PRESCALER(&htim10, prescaler);
             __HAL_TIM_SET_AUTORELOAD(&htim10, period);
             if(StopFlag == 0)
-            __HAL_TIM_SET_COMPARE(&htim10, TIM_CHANNEL_1, period / 2);
+            __HAL_TIM_SET_COMPARE(&htim10, TIM_CHANNEL_1, ccr);
             break;
     }
 

PLSR/PLSR/EWARM/settings/test.1.dnx

@@ -12,12 +12,12 @@
         <ByteLimit>50</ByteLimit>
     </Stack>
     <StLinkDriver>
+        <stlinkserialNo>46232557</stlinkserialNo>
+        <stlinkfoundProbes />
         <CStepIntDis>_ 0</CStepIntDis>
         <LeaveTargetRunning>_ 0</LeaveTargetRunning>
         <stlinkResetStyle>0</stlinkResetStyle>
         <stlinkResetStrategy>2</stlinkResetStrategy>
-        <stlinkserialNo>46232557</stlinkserialNo>
-        <stlinkfoundProbes />
     </StLinkDriver>
     <DebugChecksum>
         <Checksum>630028761</Checksum>