Visitor II
December 11, 2015
Question
PROBLEM WITH FFT ON STM32F4
- December 11, 2015
- 2 replies
- 1148 views
Posted on December 11, 2015 at 08:54
I'm going to apply FFT on 512 sized array captured from ADC
BUT as soon as i add libraries like ''arm_math.h''or ''ARMCM4.h'' i get bunch of errors here is my code please someone kindly help me im running out of time I attached files ////////////////////////////////////////////////////////////////////#include ''stm32f4xx.h''
#include ''system_stm32f4xx.h''
#include ''tm_stm32f4_hd447h''
#include ''stm32f4xx_tim.h''
#include ''stm32f4xx_rcc.h''
#include ''stdlib.h''
#include ''stm32f4xx_gpio.h''
#include ''defines.h''
#include ''arm_math.h''
#include ''arm_const_structs.h''
#include ''math_helper.h''
#include ''system_ARMCM4.h''
#include ''stm32f4xx_adc.h''
#include ''stm32f4xx_dma.h''
#include ''tm_stm32f4_adc.h''
#include ''tm_stm32f4_delay.h''
#include ''tm_stm32f4_gpio.h''
#include ''stdio.h''
#define rezabuffer0 [1024]
uint16_t rezareadadc(ADC_TypeDef* ADCx, uint8_t channel) {
int i1;
ADC_RegularChannelConfig(ADCx, channel, 0, ADC_SampleTime_15Cycles);
ADC_RegularChannelConfig(ADCx, channel, 1, ADC_SampleTime_15Cycles);
ADC_SoftwareStartConv(ADCx);
/* Wait till done */
while (ADC_GetFlagStatus(ADCx, ADC_FLAG_EOC) == RESET);
/* Return result */
return ADC_GetConversionValue(ADCx);
}
int rezafft(){
}
void rezapinsled()
{
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitTypeDef gpioStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
gpioStructure.GPIO_Pin = GPIO_Pin_12 | GPIO_Pin_13;
gpioStructure.GPIO_Mode = GPIO_Mode_OUT;
gpioStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOD, &gpioStructure);
// GPIO_WriteBit(GPIOD, GPIO_Pin_12 | GPIO_Pin_13, Bit_RESET);
}
void rezapinsadc(){
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitTypeDef gpioStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1/* |GPIO_Pin_2 | GPIO_Pin_3
| GPIO_Pin_5 | GPIO_Pin_6*/;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
void rezatimer()
{
TIM_TimeBaseInitTypeDef timerInitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM7, ENABLE);
timerInitStructure.TIM_Prescaler = 4200;
timerInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
timerInitStructure.TIM_Period = 5;
timerInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
timerInitStructure.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM7, &timerInitStructure);
TIM_Cmd(TIM7, ENABLE);
TIM_ITConfig(TIM7, TIM_IT_Update, ENABLE);
}
int rezaintrrupt(){
NVIC_InitTypeDef nvicStructure;
nvicStructure.NVIC_IRQChannel = TIM7_IRQn;
nvicStructure.NVIC_IRQChannelPreemptionPriority = 0;
nvicStructure.NVIC_IRQChannelSubPriority = 0;
nvicStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&nvicStructure);
}
void rezaadcconfg(void)
{
ADC_InitTypeDef ADC_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
ADC_CommonInit(&ADC_CommonInitStructure);
/* ADC1 Init ****************************************************************/
ADC_InitStructure.ADC_Resolution = ADC_Resolution_6b;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 1;
}
int main()
{
int j=0,i=0;
int VA[1024];
int IA[1024];
rezapinsled();
rezapinsadc();
rezatimer();
rezaintrrupt();
rezaadcconfg();
while (1){
if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET)
{
TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
if (i<1025){
VA[i]=rezareadadc(ADC1,0);
IA[i]=rezareadadc(ADC1,1);
i++;
}
}
}
}