Posted on June 16, 2014 at 11:28Hello!
I'm actually trying to use TIM2 interrupt and use SPI in the same time. But when I initialise the SPI peripheral, it doesn't work : there is no timer interrupt any more.
You can see above the main function and the useful interrupt functions
int main(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |
RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD |
RCC_APB2Periph_GPIOE, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_Init(GPIOE, &GPIO_InitStructure);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |
RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD |
RCC_APB2Periph_GPIOE, DISABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitTypeDef gpioinit;
gpioinit.GPIO_Mode=GPIO_Mode_IPD;
gpioinit.GPIO_Speed=GPIO_Speed_50MHz;
gpioinit.GPIO_Pin=GPIO_Pin_12;
GPIO_Init(GPIOA, &gpioinit);
if (GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_12) != 0)
{
while (1)
{
}
}
/*power on RFM12 module*/ //The SPI peripheral
RFM12_poweron();
/*initialize SPI1 peripheral to communicate with RFM12*/
hlperiph_SPI1master_init();
/*initializes RFM12 with correct configuration*/
RFM12_init();
hlperiph_led_init();
hlperiph_EXTI_PA0_init();
uint8_t tx_start[] = ''\r\nStarting main''; //Send a message throught the SPI peripheral
RFM12_TxData(tx_start, 15);
// SysTick end of count event each 1ms
RCC_GetClocksFreq(&RCC_Clocks);
SysTick_Config(RCC_Clocks.HCLK_Frequency / 1000);
hlperiph_timer2_init();
// RFM12_init();
transmit();
RFM12_poweroff();
/* Infinite loop */
while (1)
{ }
}
void TIM2_IRQHandler(void)
{
if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET)
{
TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
RFM12_init();
uint8_t tx_TIM3[] = ''TIM2'';
RFM12_TxData(tx_TIM3, 4);
}
}
Thank you very much,
H�lo�se
#stm32
