关于STM8L的ADC和串口通信的问题

只看该作者 · 2012-6-27 10:06

如何将STM8L151C6T6的ADC采集的电压数据用串口通信发挥到PC上，能不能给段程序实例，求高人帮忙指点

1万 · 2012-6-27 13:45

这不难。
只需要把STM8L151C6T6的ADC例子，和串口通信例子拼起来，就行了。

只看该作者 · 2012-6-27 15:15

纯拼接工作了，库函数和编程实例就能解决问题

只看该作者 · 2012-6-27 15:27

应该还需要在这基础上加点代码吧，我是初学着能不能详细一点，万分感谢

只看该作者 · 2012-6-28 10:40

ADC采样的值传递给串口当作发送数据就可以

只看该作者 · 2012-7-2 21:38

我写的程序在调试时，串口调试软件只有在按复位键时才有数据显示，且串口调试软件的收帧数一直在增加，而且当把ADC的输入去掉是按复位键仍有数据传输，哪位高手帮忙解答一些是为什么

只看该作者 · 2012-7-2 21:40

附上程序：
#include "stm8l15x.h"
#include "stm8_eval.h"

/** @addtogroup STM8L15x_StdPeriph_Examples
  * @{
  */

/** @addtogroup ADC_AnalogWatchdog
  * @{
  */

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define ADC_RATIO             ((uint16_t) 806) /*ADC_RATIO = ( 3.3 * 1000 * 1000)/4095 */

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
uint16_t ADCdata = 0;
uint16_t PotVoltage = 0;

/* Private function prototypes -----------------------------------------------*/
static void ADC_Config(void);
static void USART_Config(void);
void SendVoltage(uint16_t Voltage);

/* Private functions ---------------------------------------------------------*/

/**
  * @brief  Main program.
  * @param  None
  * @retval None
  */
void main(void)
{
  uint16_t i;
/* ADC configuration -------------------------------------------*/
  ADC_Config();
/* USART configuration -------------------------------------------*/
USART_Config();
while (1)
{
   /* Calculate voltage value*/
   PotVoltage = (uint16_t)((uint32_t)((uint32_t)ADCdata * (uint32_t)ADC_RATIO) / (uint32_t)1000);

   /* Display voltage value on LCD*/
   SendVoltage((uint16_t)PotVoltage);
   for(i=0;i<30000;i++)
   {
   ;
   }
}

}
static void ADC_Config(void)
{
  /* Enable ADC1 clock */
  CLK_PeripheralClockConfig(CLK_Peripheral_ADC1, ENABLE);

  /* Initialise and configure ADC1 */
  ADC_Init(ADC1, ADC_ConversionMode_Continuous, ADC_Resolution_12Bit, ADC_Prescaler_2);
  ADC_SamplingTimeConfig(ADC1, ADC_Group_SlowChannels, ADC_SamplingTime_384Cycles);

  /* Enable ADC1 */
  ADC_Cmd(ADC1, ENABLE);

  /* Enable ADC1 Channel 2 */
  ADC_ChannelCmd(ADC1, ADC_Channel_2, ENABLE);

  /* Enable Analog watchdog ADC1 Interrupt */
  ADC_ITConfig(ADC1, ADC_IT_EOC, ENABLE);

  /* Enable Interrupts */
  enableInterrupts();

  /* Start ADC1 Conversion using Software trigger*/
  ADC_SoftwareStartConv(ADC1);
}
/**
* @brief  Configure USART peripheral
* @param  None
* @retval None
*/
static void USART_Config(void)
{
/* USART configured as follow:
      - BaudRate = 115200 baud
      - Word Length = 8 Bits
      - One Stop Bit
      - Odd parity
      - Receive and transmit enabled
      - USART Clock disabled
*/
  STM_EVAL_COMInit(COM1, (uint32_t)115200, USART_WordLength_8b, USART_StopBits_1,
                  USART_Parity_No, (USART_Mode_TypeDef)(USART_Mode_Tx | USART_Mode_Rx));
  /* Enable general interrupts */
enableInterrupts();

/* Enable the USART Transmit complete interrupt: this interrupt is generated when the USART
transmit Shift Register is empty */
USART_ITConfig(EVAL_COM1, USART_IT_RXNE, ENABLE);
USART_ITConfig(EVAL_COM1, USART_IT_TC, ENABLE);
  /* Enable USART */
USART_Cmd(EVAL_COM1, ENABLE);
  }

/**
  * @brief  Display the current RV voltage on the LCD.
  * @param  voltage: specifies the voltage to display.
  * @retval None
  */
void SendVoltage(uint16_t Voltage)
{
  uint8_t i,tmp[3];
  if(i>10) return;
  for(i=0; i<4; i++)
{
      tmp[i] = PotVoltage%10;    //tmp[0]为个位, tmp[1]为十位, 依次类推
PotVoltage = PotVoltage/10;
}

//先发高位,再位低位,最后是个位
for(i=0; i<4; i++)
      USART_SendData8(EVAL_COM1, (tmp[3-i]+0x30));

USART_SendData8(EVAL_COM1, '\n');

}

只看该作者 · 2012-7-2 21:43

还有相关的中断：
INTERRUPT_HANDLER(ADC1_COMP_IRQHandler, 18)
{
  /* In order to detect unexpected events during development,
   it is recommended to set a breakpoint on the following instruction.
  */
  /* Get ADC convertion value */
  ADCdata = ADC_GetConversionValue(ADC1);
}
INTERRUPT_HANDLER(USART1_TX_TIM5_UPD_OVF_TRG_BRK_IRQHandler, 27)
{
  #ifdef USE_STM8L1526_EVAL
/* Write one byte to the transmit data register */
USART_SendData8(EVAL_COM1, TxBuffer[TxCounter++]);
USART_ClearITPendingBit(EVAL_COM1, USART_IT_TC);

if (TxCounter == TX_BUFFER_SIZE)
{
   /* Disable the USART Transmit Complete interrupt */
   USART_ITConfig(EVAL_COM1, USART_IT_TC, DISABLE);
}
#endif /* USE_STM8L1526_EVAL */

}