使用cube開發工具進行開發,使用HAL庫,有一個問題就是當我們在cube界面配置完成後“以爲完全配置好了”,結果在實際代碼編寫的時候回發現常見以下問題:
1:中斷沒配置
2:優先級沒配置
這裏簡單分析以下手動開啓中斷的配置 取兩個例子
example1:如何在無法改動cube工程的情況下 使能外部中斷
step1
gpio.c 中
GPIO_InitStruct.Pin = MotoFG_Pin;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(MotoFG_GPIO_Port, &GPIO_InitStruct);
HAL_NVIC_SetPriority(EXTI3_IRQn, 5, 0); //改爲外部中斷9
HAL_NVIC_EnableIRQ(EXTI3_IRQn); //手動修改外部中斷設置
step2
it.c中
{
{
switch(GPIO_Pin)
{
case GPIO_PIN_3:
{
PulseCome++;
}
break;
default:
break;
}
void MX_TIM2_Init(void)//117
{
TIM_ClockConfigTypeDef sClockSourceConfig;
TIM_MasterConfigTypeDef sMasterConfig;
TIM_OC_InitTypeDef sConfigOC;
htim2.Init.Prescaler = 71;
htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
htim2.Init.Period = 3600;
htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim2.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
if (HAL_TIM_Base_Init(&htim2) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
if (HAL_TIM_ConfigClockSource(&htim2, &sClockSourceConfig) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
{
_Error_Handler(__FILE__, __LINE__);
}
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
sConfigOC.Pulse = 1234;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCFastMode = TIM_OCFAST_ENABLE;
if (HAL_TIM_PWM_ConfigChannel(&htim2, &sConfigOC, TIM_CHANNEL_4) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
}
{
{
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(timerpwm_GPIO_Port, &GPIO_InitStruct);
__HAL_AFIO_REMAP_TIM2_PARTIAL_2(); // 開AFIO時鐘
{
/* USER CODE BEGIN TIM4_IRQn 0 */
HAL_TIM_IRQHandler(&htim2);
/* USER CODE BEGIN TIM4_IRQn 1 */
}