Posted on May 11, 2015 at 22:03
Hello everyone
I am new to this forum, so hello. I am alsonew to STM en C. I am trying to learn everything step by step but get the stuck on the adc.
I am trying to get the adc working on stm8s003f3 with the following code in STVD with Cosmic, and send the result to the pc using UART. Can anybode tell my what i am doing wrong? adc_value is 1010 from ADXL Same setup on arduino gives a reading somewhere around
Any suggestion is welkom... Already thanks
/* Includes ------------------------------------------------------------------*/
#include ''stm8s.h''
#include ''stdio.h''
#ifdef _RAISONANCE_
#define PUTCHAR_PROTOTYPE int putchar (char c)
#define GETCHAR_PROTOTYPE int getchar (void)
#elif defined (_COSMIC_)
#define PUTCHAR_PROTOTYPE char putchar (char c)
#define GETCHAR_PROTOTYPE char getchar (void)
#else /* _IAR_ */
#define PUTCHAR_PROTOTYPE int putchar (int c)
#define GETCHAR_PROTOTYPE int getchar (void)
#endif /* _RAISONANCE_ */
int i;
int nCount = 0;
int adc_value = 0;
int adc_h = 0;
int adc_l = 0;
int nAdc_Buffer[10] = {0,0,0,0,0,0,0,0,0,0};
int nAdc_Hold = 0;
void main(void)
{
char ans;
CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1);
UART1_DeInit();
UART1_Init((uint32_t)115200, UART1_WORDLENGTH_8D, UART1_STOPBITS_1, UART1_PARITY_NO,
UART1_SYNCMODE_CLOCK_DISABLE, UART1_MODE_TXRX_ENABLE);
/* ADC 1 Configuration ----------------------------------------*/
GPIO_Init(GPIOD, GPIO_PIN_2, GPIO_MODE_IN_FL_NO_IT );
ADC1_DeInit();
ADC1_Init(ADC1_CONVERSIONMODE_CONTINUOUS, ADC1_CHANNEL_0, ADC1_PRESSEL_FCPU_D2, ADC1_EXTTRIG_TIM,DISABLE, ADC1_ALIGN_RIGHT, ADC1_SCHMITTTRIG_CHANNEL0, DISABLE );
ADC1_StartConversion();
while (1)
{
for(i=0;i<20000;i++) // A delay loop
{
nop();
}
for ( nCount = 0; nCount< 10; nCount++){
nAdc_Buffer[nCount] = ADC1_GetConversionValue();
nAdc_Hold += nAdc_Buffer[nCount];
}
nAdc_Buffer[0] = nAdc_Hold / 10;
adc_value = nAdc_Buffer[0];
for ( nCount = 0; nCount< 10; nCount++){
nAdc_Buffer[nCount] = 0;
}
nAdc_Hold = 0;
printf('' %d\n'',adc_value);
printf(''adc value\n\r'');
}
}
PUTCHAR_PROTOTYPE
{
/* Write a character to the UART1 */
UART1_SendData8(c);
/* Loop until the end of transmission */
while (UART1_GetFlagStatus(UART1_FLAG_TXE) == RESET);
return (c);
}
GETCHAR_PROTOTYPE
{
#ifdef _COSMIC_
char c = 0;
#else
int c = 0;
#endif
/* Loop until the Read data register flag is SET */
while (UART1_GetFlagStatus(UART1_FLAG_RXNE) == RESET);
c = UART1_ReceiveData8();
return (c);
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf(''Wrong parameters value: file %s on line %d\r\n'', file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
#stm8 #adc
