Posted on November 21, 2012 at 15:37
I'm using the following code to update an output device, in this case the LCD, but when I enable TIM 2 the microcontroller stops working! what is wrong?
void Tim2_LCD_IT(void){
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
//Configure TIM2
TIM_TimeBaseStructure.TIM_Period =((SystemCoreClock / 10000) / 2) - 1;
TIM_TimeBaseStructure.TIM_Prescaler = 10000 - 1;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
TIM_Cmd(TIM2, ENABLE);
/* Enable TIM2 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 3;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void TIM2_IRQHandler(void){
TIM_ClearITPendingBit(TIM2,TIM_IT_Update);
LCD_command(Seconda_Riga); //Seconda riga
LCD_PrintData(Sprint,lenght(Sprint));
LCD_PrintData('' % '',13);
}
I also enabled another TIM to transmit data over the CAN, maybe there is some conflict?
void TIM4_IRQHandler(void)
{ //CAN TEST
TIM_ClearITPendingBit(TIM4,TIM_IT_Update);
TxMessage.Data[0] = 0x0F;
CAN_Transmit(CANx, &TxMessage);
}
void NVIC_Can_Config(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = CAN2_RX0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
